[dpdk-dev] [PATCH v7 1/2] Simplify the ifdefs in rte.app.mk

[dpdk-dev] [PATCH v7 1/2] Simplify the ifdefs in rte.app.mk

[Keith Wiles]

    Trying to simplify the ifdefs in rte.app.mk to make the code
    more readable and maintainable by moving LDLIBS variable to use
    the same style as LDLIBS-y being used in the rest of the code.

    Added a new variable called EXTRA_LDLIBS to be used by example apps
    instead of using LDLIBS directly. The new internal variable _LDLIBS
    should not be used outside of the rte.app.mk file.

Signed-off-by: Keith Wiles <keith.wiles@intel.com>
---
 mk/rte.app.mk | 242 +++++++++++++++-------------------------------------------
 1 file changed, 60 insertions(+), 182 deletions(-)

diff --git a/mk/rte.app.mk b/mk/rte.app.mk
index 62a76ae..b8030d2 100644
--- a/mk/rte.app.mk
+++ b/mk/rte.app.mk
@@ -1,7 +1,7 @@
 #   BSD LICENSE
 #
-#   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
-#   Copyright(c) 2014 6WIND S.A.
+#   Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
+#   Copyright(c) 2014-2015 6WIND S.A.
 #   All rights reserved.
 #
 #   Redistribution and use in source and binary forms, with or without
@@ -51,7 +51,7 @@ LDSCRIPT = $(RTE_LDSCRIPT)
 endif
 
 # default path for libs
-LDLIBS += -L$(RTE_SDK_BIN)/lib
+_LDLIBS-y += -L$(RTE_SDK_BIN)/lib
 
 #
 # Include libraries depending on config if NO_AUTOLIBS is not set
@@ -59,215 +59,93 @@ LDLIBS += -L$(RTE_SDK_BIN)/lib
 #
 ifeq ($(NO_AUTOLIBS),)
 
-LDLIBS += --whole-archive
+_LDLIBS-y += --whole-archive
 
-ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS),y)
-LDLIBS += -l$(RTE_LIBNAME)
-endif
+_LDLIBS-$(CONFIG_RTE_BUILD_COMBINE_LIBS)    += -l$(RTE_LIBNAME)
 
 ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS),n)
 
-ifeq ($(CONFIG_RTE_LIBRTE_DISTRIBUTOR),y)
-LDLIBS += -lrte_distributor
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_REORDER),y)
-LDLIBS += -lrte_reorder
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_DISTRIBUTOR)    += -lrte_distributor
+_LDLIBS-$(CONFIG_RTE_LIBRTE_REORDER)        += -lrte_reorder
 
-ifeq ($(CONFIG_RTE_LIBRTE_KNI),y)
 ifeq ($(CONFIG_RTE_EXEC_ENV_LINUXAPP),y)
-LDLIBS += -lrte_kni
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_KNI)            += -lrte_kni
+_LDLIBS-$(CONFIG_RTE_LIBRTE_IVSHMEM)        += -lrte_ivshmem
 endif
 
-ifeq ($(CONFIG_RTE_LIBRTE_IVSHMEM),y)
-ifeq ($(CONFIG_RTE_EXEC_ENV_LINUXAPP),y)
-LDLIBS += -lrte_ivshmem
-endif
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PIPELINE)       += -lrte_pipeline
+_LDLIBS-$(CONFIG_RTE_LIBRTE_TABLE)          += -lrte_table
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PORT)           += -lrte_port
+_LDLIBS-$(CONFIG_RTE_LIBRTE_TIMER)          += -lrte_timer
+_LDLIBS-$(CONFIG_RTE_LIBRTE_HASH)           += -lrte_hash
+_LDLIBS-$(CONFIG_RTE_LIBRTE_JOBSTATS)       += -lrte_jobstats
+_LDLIBS-$(CONFIG_RTE_LIBRTE_LPM)            += -lrte_lpm
+_LDLIBS-$(CONFIG_RTE_LIBRTE_POWER)          += -lrte_power
+_LDLIBS-$(CONFIG_RTE_LIBRTE_ACL)            += -lrte_acl
+_LDLIBS-$(CONFIG_RTE_LIBRTE_METER)          += -lrte_meter
 
-ifeq ($(CONFIG_RTE_LIBRTE_PIPELINE),y)
-LDLIBS += -lrte_pipeline
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_SCHED)          += -lrte_sched
+_LDLIBS-$(CONFIG_RTE_LIBRTE_SCHED)          += -lm
+_LDLIBS-$(CONFIG_RTE_LIBRTE_SCHED)          += -lrt
 
-ifeq ($(CONFIG_RTE_LIBRTE_TABLE),y)
-LDLIBS += -lrte_table
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PORT),y)
-LDLIBS += -lrte_port
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_TIMER),y)
-LDLIBS += -lrte_timer
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_HASH),y)
-LDLIBS += -lrte_hash
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_JOBSTATS),y)
-LDLIBS += -lrte_jobstats
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_LPM),y)
-LDLIBS += -lrte_lpm
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_POWER),y)
-LDLIBS += -lrte_power
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_ACL),y)
-LDLIBS += -lrte_acl
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_METER),y)
-LDLIBS += -lrte_meter
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_SCHED),y)
-LDLIBS += -lrte_sched
-LDLIBS += -lm
-LDLIBS += -lrt
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_VHOST), y)
-LDLIBS += -lrte_vhost
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_VHOST)          += -lrte_vhost
 
 endif # ! CONFIG_RTE_BUILD_COMBINE_LIBS
 
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_PCAP),y)
-LDLIBS += -lpcap
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_PCAP)       += -lpcap
 
-ifeq ($(CONFIG_RTE_LIBRTE_VHOST)$(CONFIG_RTE_LIBRTE_VHOST_USER),yn)
-LDLIBS += -lfuse
+ifeq ($(CONFIG_RTE_LIBRTE_VHOST_USER),n)
+_LDLIBS-$(CONFIG_RTE_LIBRTE_VHOST)          += -lfuse
 endif
 
-ifeq ($(CONFIG_RTE_LIBRTE_MLX4_PMD),y)
-LDLIBS += -libverbs
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_MLX4_PMD)       += -libverbs
 
-LDLIBS += --start-group
+_LDLIBS-y += --start-group
 
 ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS),n)
 
-ifeq ($(CONFIG_RTE_LIBRTE_KVARGS),y)
-LDLIBS += -lrte_kvargs
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_MBUF),y)
-LDLIBS += -lrte_mbuf
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_IP_FRAG),y)
-LDLIBS += -lrte_ip_frag
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_ETHER),y)
-LDLIBS += -lethdev
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_MALLOC),y)
-LDLIBS += -lrte_malloc
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_MEMPOOL),y)
-LDLIBS += -lrte_mempool
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_RING),y)
-LDLIBS += -lrte_ring
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_EAL),y)
-LDLIBS += -lrte_eal
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_CMDLINE),y)
-LDLIBS += -lrte_cmdline
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_CFGFILE),y)
-LDLIBS += -lrte_cfgfile
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_BOND),y)
-LDLIBS += -lrte_pmd_bond
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_XENVIRT),y)
-LDLIBS += -lrte_pmd_xenvirt
-LDLIBS += -lxenstore
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_KVARGS)         += -lrte_kvargs
+_LDLIBS-$(CONFIG_RTE_LIBRTE_MBUF)           += -lrte_mbuf
+_LDLIBS-$(CONFIG_RTE_LIBRTE_IP_FRAG)        += -lrte_ip_frag
+_LDLIBS-$(CONFIG_RTE_LIBRTE_ETHER)          += -lethdev
+_LDLIBS-$(CONFIG_RTE_LIBRTE_MALLOC)         += -lrte_malloc
+_LDLIBS-$(CONFIG_RTE_LIBRTE_MEMPOOL)        += -lrte_mempool
+_LDLIBS-$(CONFIG_RTE_LIBRTE_RING)           += -lrte_ring
+_LDLIBS-$(CONFIG_RTE_LIBRTE_EAL)            += -lrte_eal
+_LDLIBS-$(CONFIG_RTE_LIBRTE_CMDLINE)        += -lrte_cmdline
+_LDLIBS-$(CONFIG_RTE_LIBRTE_CFGFILE)        += -lrte_cfgfile
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_BOND)       += -lrte_pmd_bond
+
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_XENVIRT)    += -lrte_pmd_xenvirt
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_XENVIRT)    += -lxenstore
 
 ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),n)
 # plugins (link only if static libraries)
 
-ifeq ($(CONFIG_RTE_LIBRTE_VMXNET3_PMD),y)
-LDLIBS += -lrte_pmd_vmxnet3_uio
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_VIRTIO_PMD),y)
-LDLIBS += -lrte_pmd_virtio
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_ENIC_PMD),y)
-LDLIBS += -lrte_pmd_enic
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_I40E_PMD),y)
-LDLIBS += -lrte_pmd_i40e
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_FM10K_PMD),y)
-LDLIBS += -lrte_pmd_fm10k
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_IXGBE_PMD),y)
-LDLIBS += -lrte_pmd_ixgbe
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_E1000_PMD),y)
-LDLIBS += -lrte_pmd_e1000
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_MLX4_PMD),y)
-LDLIBS += -lrte_pmd_mlx4
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_RING),y)
-LDLIBS += -lrte_pmd_ring
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_PCAP),y)
-LDLIBS += -lrte_pmd_pcap
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_AF_PACKET),y)
-LDLIBS += -lrte_pmd_af_packet
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_NULL),y)
-LDLIBS += -lrte_pmd_null
-endif
-
-endif # plugins
+_LDLIBS-$(CONFIG_RTE_LIBRTE_VMXNET3_PMD)    += -lrte_pmd_vmxnet3_uio
+_LDLIBS-$(CONFIG_RTE_LIBRTE_VIRTIO_PMD)     += -lrte_pmd_virtio
+_LDLIBS-$(CONFIG_RTE_LIBRTE_ENIC_PMD)       += -lrte_pmd_enic
+_LDLIBS-$(CONFIG_RTE_LIBRTE_I40E_PMD)       += -lrte_pmd_i40e
+_LDLIBS-$(CONFIG_RTE_LIBRTE_FM10K_PMD)      += -lrte_pmd_fm10k
+_LDLIBS-$(CONFIG_RTE_LIBRTE_IXGBE_PMD)      += -lrte_pmd_ixgbe
+_LDLIBS-$(CONFIG_RTE_LIBRTE_E1000_PMD)      += -lrte_pmd_e1000
+_LDLIBS-$(CONFIG_RTE_LIBRTE_MLX4_PMD)       += -lrte_pmd_mlx4
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_RING)       += -lrte_pmd_ring
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_PCAP)       += -lrte_pmd_pcap
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_AF_PACKET)  += -lrte_pmd_af_packet
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_NULL)       += -lrte_pmd_null
+
+endif # ! $(CONFIG_RTE_BUILD_SHARED_LIB)
 
 endif # ! CONFIG_RTE_BUILD_COMBINE_LIBS
 
-LDLIBS += $(EXECENV_LDLIBS)
-
-LDLIBS += --end-group
-
-LDLIBS += --no-whole-archive
+_LDLIBS-y += $(EXECENV_LDLIBS)
+_LDLIBS-y += --end-group
+_LDLIBS-y += --no-whole-archive
 
 endif # ifeq ($(NO_AUTOLIBS),)
 
-LDLIBS += $(CPU_LDLIBS)
+LDLIBS += $(_LDLIBS-y) $(EXTRA_LDLIBS)
 
 .PHONY: all
 all: install
-- 
2.3.0

[dpdk-dev] [PATCH v7 2/2] Update Docs for new EXTRA_LDLIBS variable

[Keith Wiles]

Signed-off-by: Keith Wiles <keith.wiles@intel.com>
---
 doc/build-sdk-quick.txt                          | 1 +
 doc/guides/prog_guide/dev_kit_build_system.rst   | 2 ++
 doc/guides/prog_guide/dev_kit_root_make_help.rst | 2 +-
 3 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/doc/build-sdk-quick.txt b/doc/build-sdk-quick.txt
index 041a40e..26d5442 100644
--- a/doc/build-sdk-quick.txt
+++ b/doc/build-sdk-quick.txt
@@ -13,6 +13,7 @@ Build variables
 	EXTRA_CPPFLAGS   preprocessor options
 	EXTRA_CFLAGS     compiler options
 	EXTRA_LDFLAGS    linker options
+	EXTRA_LDLIBS     linker libary options
 	RTE_KERNELDIR    linux headers path
 	CROSS     toolchain prefix
 	V         verbose
diff --git a/doc/guides/prog_guide/dev_kit_build_system.rst b/doc/guides/prog_guide/dev_kit_build_system.rst
index 5bfef58..50bfe34 100644
--- a/doc/guides/prog_guide/dev_kit_build_system.rst
+++ b/doc/guides/prog_guide/dev_kit_build_system.rst
@@ -413,6 +413,8 @@ Variables that Can be Set/Overridden by the User in a Makefile or Command Line
 
 *   EXTRA_LDFLAGS: The content of this variable is appended after LDFLAGS when linking.
 
+*   EXTRA_LDLIBS: The content of this variable is appended after LDLIBS when linking.
+
 *   EXTRA_ASFLAGS: The content of this variable is appended after ASFLAGS when assembling.
 
 *   EXTRA_CPPFLAGS: The content of this variable is appended after CPPFLAGS when using a C preprocessor on assembly files.
diff --git a/doc/guides/prog_guide/dev_kit_root_make_help.rst b/doc/guides/prog_guide/dev_kit_root_make_help.rst
index 333b007..e522c12 100644
--- a/doc/guides/prog_guide/dev_kit_root_make_help.rst
+++ b/doc/guides/prog_guide/dev_kit_root_make_help.rst
@@ -218,7 +218,7 @@ The following variables can be specified on the command line:
 
     Enable dependency debugging. This provides some useful information about why a target is built or not.
 
-*   EXTRA_CFLAGS=, EXTRA_LDFLAGS=, EXTRA_ASFLAGS=, EXTRA_CPPFLAGS=
+*   EXTRA_CFLAGS=, EXTRA_LDFLAGS=, EXTRA_LDLIBS=, EXTRA_ASFLAGS=, EXTRA_CPPFLAGS=
 
     Append specific compilation, link or asm flags.
 
-- 
2.3.0

Re: [dpdk-dev] [PATCH v7 1/2] Simplify the ifdefs in rte.app.mk

[Olivier MATZ]

Hi Keith,

On 05/12/2015 01:14 AM, Keith Wiles wrote:
>      Trying to simplify the ifdefs in rte.app.mk to make the code
>      more readable and maintainable by moving LDLIBS variable to use
>      the same style as LDLIBS-y being used in the rest of the code.
>
>      Added a new variable called EXTRA_LDLIBS to be used by example apps
>      instead of using LDLIBS directly. The new internal variable _LDLIBS
>      should not be used outside of the rte.app.mk file.
>
> Signed-off-by: Keith Wiles <keith.wiles@intel.com>

Sorry to comment again :)

I think it should be split differently, by topic/feature and not
by location (mk vs doc)

The first commit should only do what the title says, which is
"simplify the makefile", and not add the EXTRA_LIBS variable.

The second commit should add the EXTRA_LIBS + the associated doc.

Few nits:
- the commit log is right-shifted
- the titles could be prefixed by "mk:"
- don't forget the "--in-reply-to" :)

Regards,
Olivier

[dpdk-dev] [PATCH v8 1/2] mk:Simplify the ifdefs in rte.app.mk

[Keith Wiles]

Simplify the ifdefs in rte.app.mk to make the code more
readable and maintainable by moving LDLIBS variable to
use the same style as LDLIBS-y being used in the rest
of the code. The new internal variable _LDLIBS should
not be used outside of the rte.app.mk file.

Signed-off-by: Keith Wiles <keith.wiles@intel.com>
---
 mk/rte.app.mk | 242 +++++++++++++++-------------------------------------------
 1 file changed, 60 insertions(+), 182 deletions(-)

diff --git a/mk/rte.app.mk b/mk/rte.app.mk
index 62a76ae..b8030d2 100644
--- a/mk/rte.app.mk
+++ b/mk/rte.app.mk
@@ -1,7 +1,7 @@
 #   BSD LICENSE
 #
-#   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
-#   Copyright(c) 2014 6WIND S.A.
+#   Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
+#   Copyright(c) 2014-2015 6WIND S.A.
 #   All rights reserved.
 #
 #   Redistribution and use in source and binary forms, with or without
@@ -51,7 +51,7 @@ LDSCRIPT = $(RTE_LDSCRIPT)
 endif
 
 # default path for libs
-LDLIBS += -L$(RTE_SDK_BIN)/lib
+_LDLIBS-y += -L$(RTE_SDK_BIN)/lib
 
 #
 # Include libraries depending on config if NO_AUTOLIBS is not set
@@ -59,215 +59,93 @@ LDLIBS += -L$(RTE_SDK_BIN)/lib
 #
 ifeq ($(NO_AUTOLIBS),)
 
-LDLIBS += --whole-archive
+_LDLIBS-y += --whole-archive
 
-ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS),y)
-LDLIBS += -l$(RTE_LIBNAME)
-endif
+_LDLIBS-$(CONFIG_RTE_BUILD_COMBINE_LIBS)    += -l$(RTE_LIBNAME)
 
 ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS),n)
 
-ifeq ($(CONFIG_RTE_LIBRTE_DISTRIBUTOR),y)
-LDLIBS += -lrte_distributor
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_REORDER),y)
-LDLIBS += -lrte_reorder
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_DISTRIBUTOR)    += -lrte_distributor
+_LDLIBS-$(CONFIG_RTE_LIBRTE_REORDER)        += -lrte_reorder
 
-ifeq ($(CONFIG_RTE_LIBRTE_KNI),y)
 ifeq ($(CONFIG_RTE_EXEC_ENV_LINUXAPP),y)
-LDLIBS += -lrte_kni
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_KNI)            += -lrte_kni
+_LDLIBS-$(CONFIG_RTE_LIBRTE_IVSHMEM)        += -lrte_ivshmem
 endif
 
-ifeq ($(CONFIG_RTE_LIBRTE_IVSHMEM),y)
-ifeq ($(CONFIG_RTE_EXEC_ENV_LINUXAPP),y)
-LDLIBS += -lrte_ivshmem
-endif
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PIPELINE)       += -lrte_pipeline
+_LDLIBS-$(CONFIG_RTE_LIBRTE_TABLE)          += -lrte_table
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PORT)           += -lrte_port
+_LDLIBS-$(CONFIG_RTE_LIBRTE_TIMER)          += -lrte_timer
+_LDLIBS-$(CONFIG_RTE_LIBRTE_HASH)           += -lrte_hash
+_LDLIBS-$(CONFIG_RTE_LIBRTE_JOBSTATS)       += -lrte_jobstats
+_LDLIBS-$(CONFIG_RTE_LIBRTE_LPM)            += -lrte_lpm
+_LDLIBS-$(CONFIG_RTE_LIBRTE_POWER)          += -lrte_power
+_LDLIBS-$(CONFIG_RTE_LIBRTE_ACL)            += -lrte_acl
+_LDLIBS-$(CONFIG_RTE_LIBRTE_METER)          += -lrte_meter
 
-ifeq ($(CONFIG_RTE_LIBRTE_PIPELINE),y)
-LDLIBS += -lrte_pipeline
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_SCHED)          += -lrte_sched
+_LDLIBS-$(CONFIG_RTE_LIBRTE_SCHED)          += -lm
+_LDLIBS-$(CONFIG_RTE_LIBRTE_SCHED)          += -lrt
 
-ifeq ($(CONFIG_RTE_LIBRTE_TABLE),y)
-LDLIBS += -lrte_table
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PORT),y)
-LDLIBS += -lrte_port
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_TIMER),y)
-LDLIBS += -lrte_timer
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_HASH),y)
-LDLIBS += -lrte_hash
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_JOBSTATS),y)
-LDLIBS += -lrte_jobstats
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_LPM),y)
-LDLIBS += -lrte_lpm
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_POWER),y)
-LDLIBS += -lrte_power
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_ACL),y)
-LDLIBS += -lrte_acl
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_METER),y)
-LDLIBS += -lrte_meter
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_SCHED),y)
-LDLIBS += -lrte_sched
-LDLIBS += -lm
-LDLIBS += -lrt
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_VHOST), y)
-LDLIBS += -lrte_vhost
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_VHOST)          += -lrte_vhost
 
 endif # ! CONFIG_RTE_BUILD_COMBINE_LIBS
 
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_PCAP),y)
-LDLIBS += -lpcap
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_PCAP)       += -lpcap
 
-ifeq ($(CONFIG_RTE_LIBRTE_VHOST)$(CONFIG_RTE_LIBRTE_VHOST_USER),yn)
-LDLIBS += -lfuse
+ifeq ($(CONFIG_RTE_LIBRTE_VHOST_USER),n)
+_LDLIBS-$(CONFIG_RTE_LIBRTE_VHOST)          += -lfuse
 endif
 
-ifeq ($(CONFIG_RTE_LIBRTE_MLX4_PMD),y)
-LDLIBS += -libverbs
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_MLX4_PMD)       += -libverbs
 
-LDLIBS += --start-group
+_LDLIBS-y += --start-group
 
 ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS),n)
 
-ifeq ($(CONFIG_RTE_LIBRTE_KVARGS),y)
-LDLIBS += -lrte_kvargs
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_MBUF),y)
-LDLIBS += -lrte_mbuf
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_IP_FRAG),y)
-LDLIBS += -lrte_ip_frag
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_ETHER),y)
-LDLIBS += -lethdev
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_MALLOC),y)
-LDLIBS += -lrte_malloc
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_MEMPOOL),y)
-LDLIBS += -lrte_mempool
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_RING),y)
-LDLIBS += -lrte_ring
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_EAL),y)
-LDLIBS += -lrte_eal
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_CMDLINE),y)
-LDLIBS += -lrte_cmdline
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_CFGFILE),y)
-LDLIBS += -lrte_cfgfile
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_BOND),y)
-LDLIBS += -lrte_pmd_bond
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_XENVIRT),y)
-LDLIBS += -lrte_pmd_xenvirt
-LDLIBS += -lxenstore
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_KVARGS)         += -lrte_kvargs
+_LDLIBS-$(CONFIG_RTE_LIBRTE_MBUF)           += -lrte_mbuf
+_LDLIBS-$(CONFIG_RTE_LIBRTE_IP_FRAG)        += -lrte_ip_frag
+_LDLIBS-$(CONFIG_RTE_LIBRTE_ETHER)          += -lethdev
+_LDLIBS-$(CONFIG_RTE_LIBRTE_MALLOC)         += -lrte_malloc
+_LDLIBS-$(CONFIG_RTE_LIBRTE_MEMPOOL)        += -lrte_mempool
+_LDLIBS-$(CONFIG_RTE_LIBRTE_RING)           += -lrte_ring
+_LDLIBS-$(CONFIG_RTE_LIBRTE_EAL)            += -lrte_eal
+_LDLIBS-$(CONFIG_RTE_LIBRTE_CMDLINE)        += -lrte_cmdline
+_LDLIBS-$(CONFIG_RTE_LIBRTE_CFGFILE)        += -lrte_cfgfile
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_BOND)       += -lrte_pmd_bond
+
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_XENVIRT)    += -lrte_pmd_xenvirt
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_XENVIRT)    += -lxenstore
 
 ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),n)
 # plugins (link only if static libraries)
 
-ifeq ($(CONFIG_RTE_LIBRTE_VMXNET3_PMD),y)
-LDLIBS += -lrte_pmd_vmxnet3_uio
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_VIRTIO_PMD),y)
-LDLIBS += -lrte_pmd_virtio
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_ENIC_PMD),y)
-LDLIBS += -lrte_pmd_enic
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_I40E_PMD),y)
-LDLIBS += -lrte_pmd_i40e
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_FM10K_PMD),y)
-LDLIBS += -lrte_pmd_fm10k
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_IXGBE_PMD),y)
-LDLIBS += -lrte_pmd_ixgbe
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_E1000_PMD),y)
-LDLIBS += -lrte_pmd_e1000
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_MLX4_PMD),y)
-LDLIBS += -lrte_pmd_mlx4
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_RING),y)
-LDLIBS += -lrte_pmd_ring
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_PCAP),y)
-LDLIBS += -lrte_pmd_pcap
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_AF_PACKET),y)
-LDLIBS += -lrte_pmd_af_packet
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_NULL),y)
-LDLIBS += -lrte_pmd_null
-endif
-
-endif # plugins
+_LDLIBS-$(CONFIG_RTE_LIBRTE_VMXNET3_PMD)    += -lrte_pmd_vmxnet3_uio
+_LDLIBS-$(CONFIG_RTE_LIBRTE_VIRTIO_PMD)     += -lrte_pmd_virtio
+_LDLIBS-$(CONFIG_RTE_LIBRTE_ENIC_PMD)       += -lrte_pmd_enic
+_LDLIBS-$(CONFIG_RTE_LIBRTE_I40E_PMD)       += -lrte_pmd_i40e
+_LDLIBS-$(CONFIG_RTE_LIBRTE_FM10K_PMD)      += -lrte_pmd_fm10k
+_LDLIBS-$(CONFIG_RTE_LIBRTE_IXGBE_PMD)      += -lrte_pmd_ixgbe
+_LDLIBS-$(CONFIG_RTE_LIBRTE_E1000_PMD)      += -lrte_pmd_e1000
+_LDLIBS-$(CONFIG_RTE_LIBRTE_MLX4_PMD)       += -lrte_pmd_mlx4
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_RING)       += -lrte_pmd_ring
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_PCAP)       += -lrte_pmd_pcap
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_AF_PACKET)  += -lrte_pmd_af_packet
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_NULL)       += -lrte_pmd_null
+
+endif # ! $(CONFIG_RTE_BUILD_SHARED_LIB)
 
 endif # ! CONFIG_RTE_BUILD_COMBINE_LIBS
 
-LDLIBS += $(EXECENV_LDLIBS)
-
-LDLIBS += --end-group
-
-LDLIBS += --no-whole-archive
+_LDLIBS-y += $(EXECENV_LDLIBS)
+_LDLIBS-y += --end-group
+_LDLIBS-y += --no-whole-archive
 
 endif # ifeq ($(NO_AUTOLIBS),)
 
-LDLIBS += $(CPU_LDLIBS)
+LDLIBS += $(_LDLIBS-y) $(EXTRA_LDLIBS)
 
 .PHONY: all
 all: install
-- 
2.3.0

[dpdk-dev] [PATCH v8 2/2] mk:Update Docs for new EXTRA_LDLIBS variable

[Keith Wiles]

Signed-off-by: Keith Wiles <keith.wiles@intel.com>
---
 doc/build-sdk-quick.txt                          | 1 +
 doc/guides/prog_guide/dev_kit_build_system.rst   | 2 ++
 doc/guides/prog_guide/dev_kit_root_make_help.rst | 2 +-
 3 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/doc/build-sdk-quick.txt b/doc/build-sdk-quick.txt
index 041a40e..26d5442 100644
--- a/doc/build-sdk-quick.txt
+++ b/doc/build-sdk-quick.txt
@@ -13,6 +13,7 @@ Build variables
 	EXTRA_CPPFLAGS   preprocessor options
 	EXTRA_CFLAGS     compiler options
 	EXTRA_LDFLAGS    linker options
+	EXTRA_LDLIBS     linker libary options
 	RTE_KERNELDIR    linux headers path
 	CROSS     toolchain prefix
 	V         verbose
diff --git a/doc/guides/prog_guide/dev_kit_build_system.rst b/doc/guides/prog_guide/dev_kit_build_system.rst
index 5bfef58..50bfe34 100644
--- a/doc/guides/prog_guide/dev_kit_build_system.rst
+++ b/doc/guides/prog_guide/dev_kit_build_system.rst
@@ -413,6 +413,8 @@ Variables that Can be Set/Overridden by the User in a Makefile or Command Line
 
 *   EXTRA_LDFLAGS: The content of this variable is appended after LDFLAGS when linking.
 
+*   EXTRA_LDLIBS: The content of this variable is appended after LDLIBS when linking.
+
 *   EXTRA_ASFLAGS: The content of this variable is appended after ASFLAGS when assembling.
 
 *   EXTRA_CPPFLAGS: The content of this variable is appended after CPPFLAGS when using a C preprocessor on assembly files.
diff --git a/doc/guides/prog_guide/dev_kit_root_make_help.rst b/doc/guides/prog_guide/dev_kit_root_make_help.rst
index 333b007..e522c12 100644
--- a/doc/guides/prog_guide/dev_kit_root_make_help.rst
+++ b/doc/guides/prog_guide/dev_kit_root_make_help.rst
@@ -218,7 +218,7 @@ The following variables can be specified on the command line:
 
     Enable dependency debugging. This provides some useful information about why a target is built or not.
 
-*   EXTRA_CFLAGS=, EXTRA_LDFLAGS=, EXTRA_ASFLAGS=, EXTRA_CPPFLAGS=
+*   EXTRA_CFLAGS=, EXTRA_LDFLAGS=, EXTRA_LDLIBS=, EXTRA_ASFLAGS=, EXTRA_CPPFLAGS=
 
     Append specific compilation, link or asm flags.
 
-- 
2.3.0

Re: [dpdk-dev] [PATCH v8 1/2] mk:Simplify the ifdefs in rte.app.mk

[Olivier MATZ]

Hi,

On 05/12/2015 09:11 PM, Keith Wiles wrote:
> Simplify the ifdefs in rte.app.mk to make the code more
> readable and maintainable by moving LDLIBS variable to
> use the same style as LDLIBS-y being used in the rest
> of the code. The new internal variable _LDLIBS should
> not be used outside of the rte.app.mk file.
>
> Signed-off-by: Keith Wiles <keith.wiles@intel.com>
> ---
>   mk/rte.app.mk | 242 +++++++++++++++-------------------------------------------
>   1 file changed, 60 insertions(+), 182 deletions(-)
>
> diff --git a/mk/rte.app.mk b/mk/rte.app.mk
> index 62a76ae..b8030d2 100644
> --- a/mk/rte.app.mk
> +++ b/mk/rte.app.mk
> @@ -1,7 +1,7 @@
>   #   BSD LICENSE
>   #
> -#   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
> -#   Copyright(c) 2014 6WIND S.A.
> +#   Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
> +#   Copyright(c) 2014-2015 6WIND S.A.
>   #   All rights reserved.
>   #
>   #   Redistribution and use in source and binary forms, with or without
> @@ -51,7 +51,7 @@ LDSCRIPT = $(RTE_LDSCRIPT)
>   endif
>
>   # default path for libs
> -LDLIBS += -L$(RTE_SDK_BIN)/lib
> +_LDLIBS-y += -L$(RTE_SDK_BIN)/lib
>
>   #
>   # Include libraries depending on config if NO_AUTOLIBS is not set
> @@ -59,215 +59,93 @@ LDLIBS += -L$(RTE_SDK_BIN)/lib
>   #
>   ifeq ($(NO_AUTOLIBS),)
>
> -LDLIBS += --whole-archive
> +_LDLIBS-y += --whole-archive
>
> -ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS),y)
> -LDLIBS += -l$(RTE_LIBNAME)
> -endif
> +_LDLIBS-$(CONFIG_RTE_BUILD_COMBINE_LIBS)    += -l$(RTE_LIBNAME)
>
>   ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS),n)
>
> -ifeq ($(CONFIG_RTE_LIBRTE_DISTRIBUTOR),y)
> -LDLIBS += -lrte_distributor
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_REORDER),y)
> -LDLIBS += -lrte_reorder
> -endif
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_DISTRIBUTOR)    += -lrte_distributor
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_REORDER)        += -lrte_reorder
>
> -ifeq ($(CONFIG_RTE_LIBRTE_KNI),y)
>   ifeq ($(CONFIG_RTE_EXEC_ENV_LINUXAPP),y)
> -LDLIBS += -lrte_kni
> -endif
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_KNI)            += -lrte_kni
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_IVSHMEM)        += -lrte_ivshmem
>   endif
>
> -ifeq ($(CONFIG_RTE_LIBRTE_IVSHMEM),y)
> -ifeq ($(CONFIG_RTE_EXEC_ENV_LINUXAPP),y)
> -LDLIBS += -lrte_ivshmem
> -endif
> -endif
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_PIPELINE)       += -lrte_pipeline
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_TABLE)          += -lrte_table
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_PORT)           += -lrte_port
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_TIMER)          += -lrte_timer
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_HASH)           += -lrte_hash
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_JOBSTATS)       += -lrte_jobstats
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_LPM)            += -lrte_lpm
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_POWER)          += -lrte_power
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_ACL)            += -lrte_acl
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_METER)          += -lrte_meter
>
> -ifeq ($(CONFIG_RTE_LIBRTE_PIPELINE),y)
> -LDLIBS += -lrte_pipeline
> -endif
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_SCHED)          += -lrte_sched
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_SCHED)          += -lm
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_SCHED)          += -lrt
>
> -ifeq ($(CONFIG_RTE_LIBRTE_TABLE),y)
> -LDLIBS += -lrte_table
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_PORT),y)
> -LDLIBS += -lrte_port
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_TIMER),y)
> -LDLIBS += -lrte_timer
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_HASH),y)
> -LDLIBS += -lrte_hash
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_JOBSTATS),y)
> -LDLIBS += -lrte_jobstats
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_LPM),y)
> -LDLIBS += -lrte_lpm
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_POWER),y)
> -LDLIBS += -lrte_power
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_ACL),y)
> -LDLIBS += -lrte_acl
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_METER),y)
> -LDLIBS += -lrte_meter
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_SCHED),y)
> -LDLIBS += -lrte_sched
> -LDLIBS += -lm
> -LDLIBS += -lrt
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_VHOST), y)
> -LDLIBS += -lrte_vhost
> -endif
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_VHOST)          += -lrte_vhost
>
>   endif # ! CONFIG_RTE_BUILD_COMBINE_LIBS
>
> -ifeq ($(CONFIG_RTE_LIBRTE_PMD_PCAP),y)
> -LDLIBS += -lpcap
> -endif
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_PCAP)       += -lpcap
>
> -ifeq ($(CONFIG_RTE_LIBRTE_VHOST)$(CONFIG_RTE_LIBRTE_VHOST_USER),yn)
> -LDLIBS += -lfuse
> +ifeq ($(CONFIG_RTE_LIBRTE_VHOST_USER),n)
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_VHOST)          += -lfuse
>   endif
>
> -ifeq ($(CONFIG_RTE_LIBRTE_MLX4_PMD),y)
> -LDLIBS += -libverbs
> -endif
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_MLX4_PMD)       += -libverbs
>
> -LDLIBS += --start-group
> +_LDLIBS-y += --start-group
>
>   ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS),n)
>
> -ifeq ($(CONFIG_RTE_LIBRTE_KVARGS),y)
> -LDLIBS += -lrte_kvargs
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_MBUF),y)
> -LDLIBS += -lrte_mbuf
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_IP_FRAG),y)
> -LDLIBS += -lrte_ip_frag
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_ETHER),y)
> -LDLIBS += -lethdev
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_MALLOC),y)
> -LDLIBS += -lrte_malloc
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_MEMPOOL),y)
> -LDLIBS += -lrte_mempool
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_RING),y)
> -LDLIBS += -lrte_ring
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_EAL),y)
> -LDLIBS += -lrte_eal
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_CMDLINE),y)
> -LDLIBS += -lrte_cmdline
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_CFGFILE),y)
> -LDLIBS += -lrte_cfgfile
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_PMD_BOND),y)
> -LDLIBS += -lrte_pmd_bond
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_PMD_XENVIRT),y)
> -LDLIBS += -lrte_pmd_xenvirt
> -LDLIBS += -lxenstore
> -endif
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_KVARGS)         += -lrte_kvargs
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_MBUF)           += -lrte_mbuf
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_IP_FRAG)        += -lrte_ip_frag
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_ETHER)          += -lethdev
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_MALLOC)         += -lrte_malloc
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_MEMPOOL)        += -lrte_mempool
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_RING)           += -lrte_ring
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_EAL)            += -lrte_eal
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_CMDLINE)        += -lrte_cmdline
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_CFGFILE)        += -lrte_cfgfile
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_BOND)       += -lrte_pmd_bond
> +
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_XENVIRT)    += -lrte_pmd_xenvirt
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_XENVIRT)    += -lxenstore
>
>   ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),n)
>   # plugins (link only if static libraries)
>
> -ifeq ($(CONFIG_RTE_LIBRTE_VMXNET3_PMD),y)
> -LDLIBS += -lrte_pmd_vmxnet3_uio
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_VIRTIO_PMD),y)
> -LDLIBS += -lrte_pmd_virtio
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_ENIC_PMD),y)
> -LDLIBS += -lrte_pmd_enic
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_I40E_PMD),y)
> -LDLIBS += -lrte_pmd_i40e
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_FM10K_PMD),y)
> -LDLIBS += -lrte_pmd_fm10k
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_IXGBE_PMD),y)
> -LDLIBS += -lrte_pmd_ixgbe
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_E1000_PMD),y)
> -LDLIBS += -lrte_pmd_e1000
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_MLX4_PMD),y)
> -LDLIBS += -lrte_pmd_mlx4
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_PMD_RING),y)
> -LDLIBS += -lrte_pmd_ring
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_PMD_PCAP),y)
> -LDLIBS += -lrte_pmd_pcap
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_PMD_AF_PACKET),y)
> -LDLIBS += -lrte_pmd_af_packet
> -endif
> -
> -ifeq ($(CONFIG_RTE_LIBRTE_PMD_NULL),y)
> -LDLIBS += -lrte_pmd_null
> -endif
> -
> -endif # plugins
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_VMXNET3_PMD)    += -lrte_pmd_vmxnet3_uio
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_VIRTIO_PMD)     += -lrte_pmd_virtio
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_ENIC_PMD)       += -lrte_pmd_enic
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_I40E_PMD)       += -lrte_pmd_i40e
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_FM10K_PMD)      += -lrte_pmd_fm10k
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_IXGBE_PMD)      += -lrte_pmd_ixgbe
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_E1000_PMD)      += -lrte_pmd_e1000
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_MLX4_PMD)       += -lrte_pmd_mlx4
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_RING)       += -lrte_pmd_ring
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_PCAP)       += -lrte_pmd_pcap
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_AF_PACKET)  += -lrte_pmd_af_packet
> +_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_NULL)       += -lrte_pmd_null
> +
> +endif # ! $(CONFIG_RTE_BUILD_SHARED_LIB)
>
>   endif # ! CONFIG_RTE_BUILD_COMBINE_LIBS
>
> -LDLIBS += $(EXECENV_LDLIBS)
> -
> -LDLIBS += --end-group
> -
> -LDLIBS += --no-whole-archive
> +_LDLIBS-y += $(EXECENV_LDLIBS)
> +_LDLIBS-y += --end-group
> +_LDLIBS-y += --no-whole-archive
>
>   endif # ifeq ($(NO_AUTOLIBS),)
>
> -LDLIBS += $(CPU_LDLIBS)
> +LDLIBS += $(_LDLIBS-y) $(EXTRA_LDLIBS)
>

As discussed in the previous mail, all things that are about
EXTRA_LDLIBS should be moved in the second patch. Therefore,
the title of the second patch should not be "update doc...", but
something like "mk: introduce EXTRA_LDLIBS...".

By the way, I missed that before, but it seems that your
patch removes CPU_LDLIBS, I don't think it's correct.


Regards,
Olivier


>   .PHONY: all
>   all: install
>

Re: [dpdk-dev] [PATCH v8 1/2] mk:Simplify the ifdefs in rte.app.mk

[Wiles, Keith]

On 5/13/15, 2:41 AM, "Olivier MATZ" <olivier.matz@6wind.com> wrote:

>Hi,
>
>On 05/12/2015 09:11 PM, Keith Wiles wrote:
>> Simplify the ifdefs in rte.app.mk to make the code more
>> readable and maintainable by moving LDLIBS variable to
>> use the same style as LDLIBS-y being used in the rest
>> of the code. The new internal variable _LDLIBS should
>> not be used outside of the rte.app.mk file.
>>
>> Signed-off-by: Keith Wiles <keith.wiles@intel.com>
>> ---
>>   mk/rte.app.mk | 242
>>+++++++++++++++-------------------------------------------
>>   1 file changed, 60 insertions(+), 182 deletions(-)
>>
>> diff --git a/mk/rte.app.mk b/mk/rte.app.mk
>> index 62a76ae..b8030d2 100644
>> --- a/mk/rte.app.mk
>> +++ b/mk/rte.app.mk
>> @@ -1,7 +1,7 @@
>>   #   BSD LICENSE
>>   #
>> -#   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
>> -#   Copyright(c) 2014 6WIND S.A.
>> +#   Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
>> +#   Copyright(c) 2014-2015 6WIND S.A.
>>   #   All rights reserved.
>>   #
>>   #   Redistribution and use in source and binary forms, with or without
>> @@ -51,7 +51,7 @@ LDSCRIPT = $(RTE_LDSCRIPT)
>>   endif
>>
>>   # default path for libs
>> -LDLIBS += -L$(RTE_SDK_BIN)/lib
>> +_LDLIBS-y += -L$(RTE_SDK_BIN)/lib
>>
>>   #
>>   # Include libraries depending on config if NO_AUTOLIBS is not set
>> @@ -59,215 +59,93 @@ LDLIBS += -L$(RTE_SDK_BIN)/lib
>>   #
>>   ifeq ($(NO_AUTOLIBS),)
>>
>> -LDLIBS += --whole-archive
>> +_LDLIBS-y += --whole-archive
>>
>> -ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS),y)
>> -LDLIBS += -l$(RTE_LIBNAME)
>> -endif
>> +_LDLIBS-$(CONFIG_RTE_BUILD_COMBINE_LIBS)    += -l$(RTE_LIBNAME)
>>
>>   ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS),n)
>>
>> -ifeq ($(CONFIG_RTE_LIBRTE_DISTRIBUTOR),y)
>> -LDLIBS += -lrte_distributor
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_REORDER),y)
>> -LDLIBS += -lrte_reorder
>> -endif
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_DISTRIBUTOR)    += -lrte_distributor
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_REORDER)        += -lrte_reorder
>>
>> -ifeq ($(CONFIG_RTE_LIBRTE_KNI),y)
>>   ifeq ($(CONFIG_RTE_EXEC_ENV_LINUXAPP),y)
>> -LDLIBS += -lrte_kni
>> -endif
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_KNI)            += -lrte_kni
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_IVSHMEM)        += -lrte_ivshmem
>>   endif
>>
>> -ifeq ($(CONFIG_RTE_LIBRTE_IVSHMEM),y)
>> -ifeq ($(CONFIG_RTE_EXEC_ENV_LINUXAPP),y)
>> -LDLIBS += -lrte_ivshmem
>> -endif
>> -endif
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_PIPELINE)       += -lrte_pipeline
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_TABLE)          += -lrte_table
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_PORT)           += -lrte_port
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_TIMER)          += -lrte_timer
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_HASH)           += -lrte_hash
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_JOBSTATS)       += -lrte_jobstats
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_LPM)            += -lrte_lpm
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_POWER)          += -lrte_power
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_ACL)            += -lrte_acl
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_METER)          += -lrte_meter
>>
>> -ifeq ($(CONFIG_RTE_LIBRTE_PIPELINE),y)
>> -LDLIBS += -lrte_pipeline
>> -endif
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_SCHED)          += -lrte_sched
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_SCHED)          += -lm
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_SCHED)          += -lrt
>>
>> -ifeq ($(CONFIG_RTE_LIBRTE_TABLE),y)
>> -LDLIBS += -lrte_table
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_PORT),y)
>> -LDLIBS += -lrte_port
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_TIMER),y)
>> -LDLIBS += -lrte_timer
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_HASH),y)
>> -LDLIBS += -lrte_hash
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_JOBSTATS),y)
>> -LDLIBS += -lrte_jobstats
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_LPM),y)
>> -LDLIBS += -lrte_lpm
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_POWER),y)
>> -LDLIBS += -lrte_power
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_ACL),y)
>> -LDLIBS += -lrte_acl
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_METER),y)
>> -LDLIBS += -lrte_meter
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_SCHED),y)
>> -LDLIBS += -lrte_sched
>> -LDLIBS += -lm
>> -LDLIBS += -lrt
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_VHOST), y)
>> -LDLIBS += -lrte_vhost
>> -endif
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_VHOST)          += -lrte_vhost
>>
>>   endif # ! CONFIG_RTE_BUILD_COMBINE_LIBS
>>
>> -ifeq ($(CONFIG_RTE_LIBRTE_PMD_PCAP),y)
>> -LDLIBS += -lpcap
>> -endif
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_PCAP)       += -lpcap
>>
>> -ifeq ($(CONFIG_RTE_LIBRTE_VHOST)$(CONFIG_RTE_LIBRTE_VHOST_USER),yn)
>> -LDLIBS += -lfuse
>> +ifeq ($(CONFIG_RTE_LIBRTE_VHOST_USER),n)
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_VHOST)          += -lfuse
>>   endif
>>
>> -ifeq ($(CONFIG_RTE_LIBRTE_MLX4_PMD),y)
>> -LDLIBS += -libverbs
>> -endif
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_MLX4_PMD)       += -libverbs
>>
>> -LDLIBS += --start-group
>> +_LDLIBS-y += --start-group
>>
>>   ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS),n)
>>
>> -ifeq ($(CONFIG_RTE_LIBRTE_KVARGS),y)
>> -LDLIBS += -lrte_kvargs
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_MBUF),y)
>> -LDLIBS += -lrte_mbuf
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_IP_FRAG),y)
>> -LDLIBS += -lrte_ip_frag
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_ETHER),y)
>> -LDLIBS += -lethdev
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_MALLOC),y)
>> -LDLIBS += -lrte_malloc
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_MEMPOOL),y)
>> -LDLIBS += -lrte_mempool
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_RING),y)
>> -LDLIBS += -lrte_ring
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_EAL),y)
>> -LDLIBS += -lrte_eal
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_CMDLINE),y)
>> -LDLIBS += -lrte_cmdline
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_CFGFILE),y)
>> -LDLIBS += -lrte_cfgfile
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_PMD_BOND),y)
>> -LDLIBS += -lrte_pmd_bond
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_PMD_XENVIRT),y)
>> -LDLIBS += -lrte_pmd_xenvirt
>> -LDLIBS += -lxenstore
>> -endif
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_KVARGS)         += -lrte_kvargs
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_MBUF)           += -lrte_mbuf
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_IP_FRAG)        += -lrte_ip_frag
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_ETHER)          += -lethdev
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_MALLOC)         += -lrte_malloc
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_MEMPOOL)        += -lrte_mempool
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_RING)           += -lrte_ring
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_EAL)            += -lrte_eal
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_CMDLINE)        += -lrte_cmdline
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_CFGFILE)        += -lrte_cfgfile
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_BOND)       += -lrte_pmd_bond
>> +
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_XENVIRT)    += -lrte_pmd_xenvirt
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_XENVIRT)    += -lxenstore
>>
>>   ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),n)
>>   # plugins (link only if static libraries)
>>
>> -ifeq ($(CONFIG_RTE_LIBRTE_VMXNET3_PMD),y)
>> -LDLIBS += -lrte_pmd_vmxnet3_uio
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_VIRTIO_PMD),y)
>> -LDLIBS += -lrte_pmd_virtio
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_ENIC_PMD),y)
>> -LDLIBS += -lrte_pmd_enic
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_I40E_PMD),y)
>> -LDLIBS += -lrte_pmd_i40e
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_FM10K_PMD),y)
>> -LDLIBS += -lrte_pmd_fm10k
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_IXGBE_PMD),y)
>> -LDLIBS += -lrte_pmd_ixgbe
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_E1000_PMD),y)
>> -LDLIBS += -lrte_pmd_e1000
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_MLX4_PMD),y)
>> -LDLIBS += -lrte_pmd_mlx4
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_PMD_RING),y)
>> -LDLIBS += -lrte_pmd_ring
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_PMD_PCAP),y)
>> -LDLIBS += -lrte_pmd_pcap
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_PMD_AF_PACKET),y)
>> -LDLIBS += -lrte_pmd_af_packet
>> -endif
>> -
>> -ifeq ($(CONFIG_RTE_LIBRTE_PMD_NULL),y)
>> -LDLIBS += -lrte_pmd_null
>> -endif
>> -
>> -endif # plugins
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_VMXNET3_PMD)    += -lrte_pmd_vmxnet3_uio
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_VIRTIO_PMD)     += -lrte_pmd_virtio
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_ENIC_PMD)       += -lrte_pmd_enic
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_I40E_PMD)       += -lrte_pmd_i40e
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_FM10K_PMD)      += -lrte_pmd_fm10k
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_IXGBE_PMD)      += -lrte_pmd_ixgbe
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_E1000_PMD)      += -lrte_pmd_e1000
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_MLX4_PMD)       += -lrte_pmd_mlx4
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_RING)       += -lrte_pmd_ring
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_PCAP)       += -lrte_pmd_pcap
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_AF_PACKET)  += -lrte_pmd_af_packet
>> +_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_NULL)       += -lrte_pmd_null
>> +
>> +endif # ! $(CONFIG_RTE_BUILD_SHARED_LIB)
>>
>>   endif # ! CONFIG_RTE_BUILD_COMBINE_LIBS
>>
>> -LDLIBS += $(EXECENV_LDLIBS)
>> -
>> -LDLIBS += --end-group
>> -
>> -LDLIBS += --no-whole-archive
>> +_LDLIBS-y += $(EXECENV_LDLIBS)
>> +_LDLIBS-y += --end-group
>> +_LDLIBS-y += --no-whole-archive
>>
>>   endif # ifeq ($(NO_AUTOLIBS),)
>>
>> -LDLIBS += $(CPU_LDLIBS)
>> +LDLIBS += $(_LDLIBS-y) $(EXTRA_LDLIBS)
>>
>
>As discussed in the previous mail, all things that are about
>EXTRA_LDLIBS should be moved in the second patch. Therefore,
>the title of the second patch should not be "update doc...", but
>something like "mk: introduce EXTRA_LDLIBS...".
>
>By the way, I missed that before, but it seems that your
>patch removes CPU_LDLIBS, I don't think it's correct.

I found no reference to CPU_LDLIBS in the docs or code other then then one
line. We now have EXTRA_LDLIBS for the command line, right?
>
>
>Regards,
>Olivier
>
>
>>   .PHONY: all
>>   all: install
>>
>

Re: [dpdk-dev] [PATCH v8 1/2] mk:Simplify the ifdefs in rte.app.mk

[Olivier MATZ]

Hi Keith,

On 05/13/2015 03:17 PM, Wiles, Keith wrote:
>>>
>>>    endif # ifeq ($(NO_AUTOLIBS),)
>>>
>>> -LDLIBS += $(CPU_LDLIBS)
>>> +LDLIBS += $(_LDLIBS-y) $(EXTRA_LDLIBS)
>>>
>>
>> As discussed in the previous mail, all things that are about
>> EXTRA_LDLIBS should be moved in the second patch. Therefore,
>> the title of the second patch should not be "update doc...", but
>> something like "mk: introduce EXTRA_LDLIBS...".
>>
>> By the way, I missed that before, but it seems that your
>> patch removes CPU_LDLIBS, I don't think it's correct.
>
> I found no reference to CPU_LDLIBS in the docs or code other then then one
> line. We now have EXTRA_LDLIBS for the command line, right?

Yes, but your patch says "simplify the ifdef". Removing
a variable (even if it is not used) in this patch is not
a good idea.

Now, the CPU_CFLAGS, CPU_LDFLAGS, CPU_LDLIBS can be defined internally
by the rte.vars.mk in mk/arch/ or mk/machine/ directories.

Regards,
Olivier

Re: [dpdk-dev] [PATCH v8 1/2] mk:Simplify the ifdefs in rte.app.mk

[Wiles, Keith]

On 5/13/15, 8:56 AM, "Olivier MATZ" <olivier.matz@6wind.com> wrote:

>Hi Keith,
>
>On 05/13/2015 03:17 PM, Wiles, Keith wrote:
>>>>
>>>>    endif # ifeq ($(NO_AUTOLIBS),)
>>>>
>>>> -LDLIBS += $(CPU_LDLIBS)
>>>> +LDLIBS += $(_LDLIBS-y) $(EXTRA_LDLIBS)
>>>>
>>>
>>> As discussed in the previous mail, all things that are about
>>> EXTRA_LDLIBS should be moved in the second patch. Therefore,
>>> the title of the second patch should not be "update doc...", but
>>> something like "mk: introduce EXTRA_LDLIBS...".
>>>
>>> By the way, I missed that before, but it seems that your
>>> patch removes CPU_LDLIBS, I don't think it's correct.
>>
>> I found no reference to CPU_LDLIBS in the docs or code other then then
>>one
>> line. We now have EXTRA_LDLIBS for the command line, right?
>
>Yes, but your patch says "simplify the ifdef". Removing
>a variable (even if it is not used) in this patch is not
>a good idea.
>
>Now, the CPU_CFLAGS, CPU_LDFLAGS, CPU_LDLIBS can be defined internally
>by the rte.vars.mk in mk/arch/ or mk/machine/ directories.

No docs for CPU_LDLIBS or reference to that variable, which means it does
not exist, right?
If it was used or documented then I would agree. Having magic variables is
not a good idea. I will add the CPU_LDLIBS in to the line, but someone
will have to document that variable.
>
>Regards,
>Olivier
>

Re: [dpdk-dev] [PATCH v8 1/2] mk:Simplify the ifdefs in rte.app.mk

[Olivier MATZ]

On 05/13/2015 04:04 PM, Wiles, Keith wrote:
>
>
> On 5/13/15, 8:56 AM, "Olivier MATZ" <olivier.matz@6wind.com> wrote:
>
>> Hi Keith,
>>
>> On 05/13/2015 03:17 PM, Wiles, Keith wrote:
>>>>>
>>>>>     endif # ifeq ($(NO_AUTOLIBS),)
>>>>>
>>>>> -LDLIBS += $(CPU_LDLIBS)
>>>>> +LDLIBS += $(_LDLIBS-y) $(EXTRA_LDLIBS)
>>>>>
>>>>
>>>> As discussed in the previous mail, all things that are about
>>>> EXTRA_LDLIBS should be moved in the second patch. Therefore,
>>>> the title of the second patch should not be "update doc...", but
>>>> something like "mk: introduce EXTRA_LDLIBS...".
>>>>
>>>> By the way, I missed that before, but it seems that your
>>>> patch removes CPU_LDLIBS, I don't think it's correct.
>>>
>>> I found no reference to CPU_LDLIBS in the docs or code other then then
>>> one
>>> line. We now have EXTRA_LDLIBS for the command line, right?
>>
>> Yes, but your patch says "simplify the ifdef". Removing
>> a variable (even if it is not used) in this patch is not
>> a good idea.
>>
>> Now, the CPU_CFLAGS, CPU_LDFLAGS, CPU_LDLIBS can be defined internally
>> by the rte.vars.mk in mk/arch/ or mk/machine/ directories.
>
> No docs for CPU_LDLIBS or reference to that variable, which means it does
> not exist, right?
> If it was used or documented then I would agree. Having magic variables is
> not a good idea. I will add the CPU_LDLIBS in to the line, but someone
> will have to document that variable.

First, this variable is internal to DPDK framework. It is not
documented, because the goal of the documentation is not to
document all internal variables. In one word, it's not a magic
variable at all, it is simply a variable.

Now, the heart of the matter is that your patch silently remove
this line. This is not acceptable and that's why I'm commenting
on it. The goal of patch splitting and proper title is to separate
features, and win time when searching in the git log for the cause
of a problem.

This is the same problem with EXTRA_LDLIBS. How can you justify
having 2 patches:
- "simplify the ifdef" that also adds the EXTRA_LDLIBS
  then
- "update the documentation for EXTRA_LDLIBS"

Regards,
Olivier



>>
>> Regards,
>> Olivier
>>
>

Re: [dpdk-dev] [PATCH v8 1/2] mk:Simplify the ifdefs in rte.app.mk

[Wiles, Keith]

On 5/13/15, 9:28 AM, "Olivier MATZ" <olivier.matz@6wind.com> wrote:

>
>On 05/13/2015 04:04 PM, Wiles, Keith wrote:
>>
>>
>> On 5/13/15, 8:56 AM, "Olivier MATZ" <olivier.matz@6wind.com> wrote:
>>
>>> Hi Keith,
>>>
>>> On 05/13/2015 03:17 PM, Wiles, Keith wrote:
>>>>>>
>>>>>>     endif # ifeq ($(NO_AUTOLIBS),)
>>>>>>
>>>>>> -LDLIBS += $(CPU_LDLIBS)
>>>>>> +LDLIBS += $(_LDLIBS-y) $(EXTRA_LDLIBS)
>>>>>>
>>>>>
>>>>> As discussed in the previous mail, all things that are about
>>>>> EXTRA_LDLIBS should be moved in the second patch. Therefore,
>>>>> the title of the second patch should not be "update doc...", but
>>>>> something like "mk: introduce EXTRA_LDLIBS...".
>>>>>
>>>>> By the way, I missed that before, but it seems that your
>>>>> patch removes CPU_LDLIBS, I don't think it's correct.
>>>>
>>>> I found no reference to CPU_LDLIBS in the docs or code other then then
>>>> one
>>>> line. We now have EXTRA_LDLIBS for the command line, right?
>>>
>>> Yes, but your patch says "simplify the ifdef". Removing
>>> a variable (even if it is not used) in this patch is not
>>> a good idea.
>>>
>>> Now, the CPU_CFLAGS, CPU_LDFLAGS, CPU_LDLIBS can be defined internally
>>> by the rte.vars.mk in mk/arch/ or mk/machine/ directories.
>>
>> No docs for CPU_LDLIBS or reference to that variable, which means it
>>does
>> not exist, right?
>> If it was used or documented then I would agree. Having magic variables
>>is
>> not a good idea. I will add the CPU_LDLIBS in to the line, but someone
>> will have to document that variable.
>
>First, this variable is internal to DPDK framework. It is not

Not referenced in the code any place except the one line and not
referenced in the docs, which means no one used that variable. By
definition this is some magic variable that someone could use only because
he knew about that variable.

As I stated before, I will add that variable back, but it must be
documented, correct?

>documented, because the goal of the documentation is not to
>document all internal variables. In one word, it's not a magic
>variable at all, it is simply a variable.
>
>Now, the heart of the matter is that your patch silently remove
>this line. This is not acceptable and that's why I'm commenting
>on it. The goal of patch splitting and proper title is to separate
>features, and win time when searching in the git log for the cause
>of a problem.
>
>This is the same problem with EXTRA_LDLIBS. How can you justify
>having 2 patches:
>- "simplify the ifdef" that also adds the EXTRA_LDLIBS
>  then
>- "update the documentation for EXTRA_LDLIBS"
>
>Regards,
>Olivier
>
>
>
>>>
>>> Regards,
>>> Olivier
>>>
>>
>

[dpdk-dev] [PATCH v9 1/2] mk:Simplify the ifdefs in the makefile

[Keith Wiles]

Simplify the ifdefs in rte.app.mk to make the code more
readable and maintainable by introducing a internal
_LDLIBS-y variable to build up the LDLIBS variable.

The new internal variable _LDLIBS-y should not be
used outside of the rte.app.mk file.

Signed-off-by: Keith Wiles <keith.wiles@intel.com>
---
 mk/rte.app.mk | 243 +++++++++++++++-------------------------------------------
 1 file changed, 61 insertions(+), 182 deletions(-)

diff --git a/mk/rte.app.mk b/mk/rte.app.mk
index af8a1b0..1a2043a 100644
--- a/mk/rte.app.mk
+++ b/mk/rte.app.mk
@@ -1,7 +1,7 @@
 #   BSD LICENSE
 #
-#   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
-#   Copyright(c) 2014 6WIND S.A.
+#   Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
+#   Copyright(c) 2014-2015 6WIND S.A.
 #   All rights reserved.
 #
 #   Redistribution and use in source and binary forms, with or without
@@ -51,218 +51,97 @@ LDSCRIPT = $(RTE_LDSCRIPT)
 endif
 
 # default path for libs
-LDLIBS += -L$(RTE_SDK_BIN)/lib
+_LDLIBS-y += -L$(RTE_SDK_BIN)/lib
 
 #
 # Order is important: from higher level to lower level
 #
-LDLIBS += --whole-archive
 
-ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS),y)
-LDLIBS += -l$(RTE_LIBNAME)
-endif
+_LDLIBS-y += --whole-archive
 
-ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS),n)
+_LDLIBS-$(CONFIG_RTE_BUILD_COMBINE_LIBS)    += -l$(RTE_LIBNAME)
 
-ifeq ($(CONFIG_RTE_LIBRTE_DISTRIBUTOR),y)
-LDLIBS += -lrte_distributor
-endif
+ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS),n)
 
-ifeq ($(CONFIG_RTE_LIBRTE_REORDER),y)
-LDLIBS += -lrte_reorder
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_DISTRIBUTOR)    += -lrte_distributor
+_LDLIBS-$(CONFIG_RTE_LIBRTE_REORDER)        += -lrte_reorder
 
-ifeq ($(CONFIG_RTE_LIBRTE_KNI),y)
 ifeq ($(CONFIG_RTE_EXEC_ENV_LINUXAPP),y)
-LDLIBS += -lrte_kni
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_KNI)            += -lrte_kni
+_LDLIBS-$(CONFIG_RTE_LIBRTE_IVSHMEM)        += -lrte_ivshmem
 endif
 
-ifeq ($(CONFIG_RTE_LIBRTE_IVSHMEM),y)
-ifeq ($(CONFIG_RTE_EXEC_ENV_LINUXAPP),y)
-LDLIBS += -lrte_ivshmem
-endif
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PIPELINE)       += -lrte_pipeline
+_LDLIBS-$(CONFIG_RTE_LIBRTE_TABLE)          += -lrte_table
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PORT)           += -lrte_port
+_LDLIBS-$(CONFIG_RTE_LIBRTE_TIMER)          += -lrte_timer
+_LDLIBS-$(CONFIG_RTE_LIBRTE_HASH)           += -lrte_hash
+_LDLIBS-$(CONFIG_RTE_LIBRTE_JOBSTATS)       += -lrte_jobstats
+_LDLIBS-$(CONFIG_RTE_LIBRTE_LPM)            += -lrte_lpm
+_LDLIBS-$(CONFIG_RTE_LIBRTE_POWER)          += -lrte_power
+_LDLIBS-$(CONFIG_RTE_LIBRTE_ACL)            += -lrte_acl
+_LDLIBS-$(CONFIG_RTE_LIBRTE_METER)          += -lrte_meter
 
-ifeq ($(CONFIG_RTE_LIBRTE_PIPELINE),y)
-LDLIBS += -lrte_pipeline
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_SCHED)          += -lrte_sched
+_LDLIBS-$(CONFIG_RTE_LIBRTE_SCHED)          += -lm
+_LDLIBS-$(CONFIG_RTE_LIBRTE_SCHED)          += -lrt
 
-ifeq ($(CONFIG_RTE_LIBRTE_TABLE),y)
-LDLIBS += -lrte_table
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PORT),y)
-LDLIBS += -lrte_port
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_TIMER),y)
-LDLIBS += -lrte_timer
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_HASH),y)
-LDLIBS += -lrte_hash
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_JOBSTATS),y)
-LDLIBS += -lrte_jobstats
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_LPM),y)
-LDLIBS += -lrte_lpm
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_POWER),y)
-LDLIBS += -lrte_power
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_ACL),y)
-LDLIBS += -lrte_acl
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_METER),y)
-LDLIBS += -lrte_meter
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_SCHED),y)
-LDLIBS += -lrte_sched
-LDLIBS += -lm
-LDLIBS += -lrt
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_VHOST), y)
-LDLIBS += -lrte_vhost
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_VHOST)          += -lrte_vhost
 
 endif # ! CONFIG_RTE_BUILD_COMBINE_LIBS
 
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_PCAP),y)
-LDLIBS += -lpcap
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_PCAP)       += -lpcap
 
-ifeq ($(CONFIG_RTE_LIBRTE_VHOST)$(CONFIG_RTE_LIBRTE_VHOST_USER),yn)
-LDLIBS += -lfuse
+ifeq ($(CONFIG_RTE_LIBRTE_VHOST_USER),n)
+_LDLIBS-$(CONFIG_RTE_LIBRTE_VHOST)          += -lfuse
 endif
 
-ifeq ($(CONFIG_RTE_LIBRTE_MLX4_PMD),y)
-LDLIBS += -libverbs
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_MLX4_PMD)       += -libverbs
 
-LDLIBS += --start-group
+_LDLIBS-y += --start-group
 
 ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS),n)
 
-ifeq ($(CONFIG_RTE_LIBRTE_KVARGS),y)
-LDLIBS += -lrte_kvargs
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_MBUF),y)
-LDLIBS += -lrte_mbuf
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_IP_FRAG),y)
-LDLIBS += -lrte_ip_frag
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_ETHER),y)
-LDLIBS += -lethdev
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_MALLOC),y)
-LDLIBS += -lrte_malloc
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_MEMPOOL),y)
-LDLIBS += -lrte_mempool
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_RING),y)
-LDLIBS += -lrte_ring
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_EAL),y)
-LDLIBS += -lrte_eal
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_CMDLINE),y)
-LDLIBS += -lrte_cmdline
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_CFGFILE),y)
-LDLIBS += -lrte_cfgfile
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_BOND),y)
-LDLIBS += -lrte_pmd_bond
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_XENVIRT),y)
-LDLIBS += -lrte_pmd_xenvirt
-LDLIBS += -lxenstore
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_KVARGS)         += -lrte_kvargs
+_LDLIBS-$(CONFIG_RTE_LIBRTE_MBUF)           += -lrte_mbuf
+_LDLIBS-$(CONFIG_RTE_LIBRTE_IP_FRAG)        += -lrte_ip_frag
+_LDLIBS-$(CONFIG_RTE_LIBRTE_ETHER)          += -lethdev
+_LDLIBS-$(CONFIG_RTE_LIBRTE_MALLOC)         += -lrte_malloc
+_LDLIBS-$(CONFIG_RTE_LIBRTE_MEMPOOL)        += -lrte_mempool
+_LDLIBS-$(CONFIG_RTE_LIBRTE_RING)           += -lrte_ring
+_LDLIBS-$(CONFIG_RTE_LIBRTE_EAL)            += -lrte_eal
+_LDLIBS-$(CONFIG_RTE_LIBRTE_CMDLINE)        += -lrte_cmdline
+_LDLIBS-$(CONFIG_RTE_LIBRTE_CFGFILE)        += -lrte_cfgfile
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_BOND)       += -lrte_pmd_bond
+
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_XENVIRT)    += -lrte_pmd_xenvirt
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_XENVIRT)    += -lxenstore
 
 ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),n)
 # plugins (link only if static libraries)
 
-ifeq ($(CONFIG_RTE_LIBRTE_VMXNET3_PMD),y)
-LDLIBS += -lrte_pmd_vmxnet3_uio
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_VIRTIO_PMD),y)
-LDLIBS += -lrte_pmd_virtio
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_ENIC_PMD),y)
-LDLIBS += -lrte_pmd_enic
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_I40E_PMD),y)
-LDLIBS += -lrte_pmd_i40e
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_FM10K_PMD),y)
-LDLIBS += -lrte_pmd_fm10k
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_IXGBE_PMD),y)
-LDLIBS += -lrte_pmd_ixgbe
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_E1000_PMD),y)
-LDLIBS += -lrte_pmd_e1000
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_MLX4_PMD),y)
-LDLIBS += -lrte_pmd_mlx4
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_RING),y)
-LDLIBS += -lrte_pmd_ring
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_PCAP),y)
-LDLIBS += -lrte_pmd_pcap
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_AF_PACKET),y)
-LDLIBS += -lrte_pmd_af_packet
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_NULL),y)
-LDLIBS += -lrte_pmd_null
-endif
-
-endif # plugins
+_LDLIBS-$(CONFIG_RTE_LIBRTE_VMXNET3_PMD)    += -lrte_pmd_vmxnet3_uio
+_LDLIBS-$(CONFIG_RTE_LIBRTE_VIRTIO_PMD)     += -lrte_pmd_virtio
+_LDLIBS-$(CONFIG_RTE_LIBRTE_ENIC_PMD)       += -lrte_pmd_enic
+_LDLIBS-$(CONFIG_RTE_LIBRTE_I40E_PMD)       += -lrte_pmd_i40e
+_LDLIBS-$(CONFIG_RTE_LIBRTE_FM10K_PMD)      += -lrte_pmd_fm10k
+_LDLIBS-$(CONFIG_RTE_LIBRTE_IXGBE_PMD)      += -lrte_pmd_ixgbe
+_LDLIBS-$(CONFIG_RTE_LIBRTE_E1000_PMD)      += -lrte_pmd_e1000
+_LDLIBS-$(CONFIG_RTE_LIBRTE_MLX4_PMD)       += -lrte_pmd_mlx4
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_RING)       += -lrte_pmd_ring
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_PCAP)       += -lrte_pmd_pcap
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_AF_PACKET)  += -lrte_pmd_af_packet
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_NULL)       += -lrte_pmd_null
+
+endif # ! $(CONFIG_RTE_BUILD_SHARED_LIB)
 
 endif # ! CONFIG_RTE_BUILD_COMBINE_LIBS
 
-LDLIBS += $(EXECENV_LDLIBS)
-
-LDLIBS += --end-group
-
-LDLIBS += --no-whole-archive
+_LDLIBS-y += $(EXECENV_LDLIBS)
+_LDLIBS-y += --end-group
+_LDLIBS-y += --no-whole-archive
 
-LDLIBS += $(CPU_LDLIBS)
+LDLIBS += $(_LDLIBS-y) $(CPU_LDLIBS) $(EXTRA_LDLIBS)
 
 .PHONY: all
 all: install
-- 
2.3.0

[dpdk-dev] [PATCH v9 2/2] mk:Introduce the EXTRA_LDLIBS variable

[Keith Wiles]

Signed-off-by: Keith Wiles <keith.wiles@intel.com>
---
 doc/build-sdk-quick.txt                          | 1 +
 doc/guides/prog_guide/dev_kit_build_system.rst   | 2 ++
 doc/guides/prog_guide/dev_kit_root_make_help.rst | 2 +-
 3 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/doc/build-sdk-quick.txt b/doc/build-sdk-quick.txt
index 041a40e..bf18b48 100644
--- a/doc/build-sdk-quick.txt
+++ b/doc/build-sdk-quick.txt
@@ -13,6 +13,7 @@ Build variables
 	EXTRA_CPPFLAGS   preprocessor options
 	EXTRA_CFLAGS     compiler options
 	EXTRA_LDFLAGS    linker options
+	EXTRA_LDLIBS     linker library options
 	RTE_KERNELDIR    linux headers path
 	CROSS     toolchain prefix
 	V         verbose
diff --git a/doc/guides/prog_guide/dev_kit_build_system.rst b/doc/guides/prog_guide/dev_kit_build_system.rst
index 04f1d4e..7dc2de6 100644
--- a/doc/guides/prog_guide/dev_kit_build_system.rst
+++ b/doc/guides/prog_guide/dev_kit_build_system.rst
@@ -411,6 +411,8 @@ Variables that Can be Set/Overridden by the User in a Makefile or Command Line
 
 *   EXTRA_LDFLAGS: The content of this variable is appended after LDFLAGS when linking.
 
+*   EXTRA_LDLIBS: The content of this variable is appended after LDLIBS when linking.
+
 *   EXTRA_ASFLAGS: The content of this variable is appended after ASFLAGS when assembling.
 
 *   EXTRA_CPPFLAGS: The content of this variable is appended after CPPFLAGS when using a C preprocessor on assembly files.
diff --git a/doc/guides/prog_guide/dev_kit_root_make_help.rst b/doc/guides/prog_guide/dev_kit_root_make_help.rst
index 333b007..e522c12 100644
--- a/doc/guides/prog_guide/dev_kit_root_make_help.rst
+++ b/doc/guides/prog_guide/dev_kit_root_make_help.rst
@@ -218,7 +218,7 @@ The following variables can be specified on the command line:
 
     Enable dependency debugging. This provides some useful information about why a target is built or not.
 
-*   EXTRA_CFLAGS=, EXTRA_LDFLAGS=, EXTRA_ASFLAGS=, EXTRA_CPPFLAGS=
+*   EXTRA_CFLAGS=, EXTRA_LDFLAGS=, EXTRA_LDLIBS=, EXTRA_ASFLAGS=, EXTRA_CPPFLAGS=
 
     Append specific compilation, link or asm flags.
 
-- 
2.3.0

Re: [dpdk-dev] [PATCH v9 1/2] mk:Simplify the ifdefs in the makefile

[Olivier MATZ]

Hi,

On 05/13/2015 06:35 PM, Keith Wiles wrote:
> Simplify the ifdefs in rte.app.mk to make the code more
> readable and maintainable by introducing a internal
> _LDLIBS-y variable to build up the LDLIBS variable.
> 
> The new internal variable _LDLIBS-y should not be
> used outside of the rte.app.mk file.
> 
> Signed-off-by: Keith Wiles <keith.wiles@intel.com>
> ---
>  mk/rte.app.mk | 243 +++++++++++++++-------------------------------------------
>  1 file changed, 61 insertions(+), 182 deletions(-)
> 
> diff --git a/mk/rte.app.mk b/mk/rte.app.mk
> index af8a1b0..1a2043a 100644
> --- a/mk/rte.app.mk
> +++ b/mk/rte.app.mk
> [...]
>  
> -LDLIBS += $(CPU_LDLIBS)
> +LDLIBS += $(_LDLIBS-y) $(CPU_LDLIBS) $(EXTRA_LDLIBS)
>  
>  .PHONY: all
>  all: install


You are still adding EXTRA_LDLIBS in a patch called "simplify the
ifdefs".

A good idea before sending a new version of a patch on the mailing
list is to check the list of the modifications that were discussed.
Then this list can be added in the cover letter or after the "---"
marker of your patch, allowing the reviewers to better understand
what changed in this version.

Regards,
Olivier

[dpdk-dev] [PATCH v10 1/2] mk:Simplify the ifdefs in the makefile

[Keith Wiles]

Simplify the ifdefs in rte.app.mk to make the code more
readable and maintainable by introducing a internal
_LDLIBS-y variable to build up the LDLIBS variable.

The new internal variable _LDLIBS-y should not be
used outside of the rte.app.mk file.

Signed-off-by: Keith Wiles <keith.wiles@intel.com>
---
 mk/rte.app.mk | 243 +++++++++++++++-------------------------------------------
 1 file changed, 61 insertions(+), 182 deletions(-)

diff --git a/mk/rte.app.mk b/mk/rte.app.mk
index af8a1b0..4fc582a 100644
--- a/mk/rte.app.mk
+++ b/mk/rte.app.mk
@@ -1,7 +1,7 @@
 #   BSD LICENSE
 #
-#   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
-#   Copyright(c) 2014 6WIND S.A.
+#   Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
+#   Copyright(c) 2014-2015 6WIND S.A.
 #   All rights reserved.
 #
 #   Redistribution and use in source and binary forms, with or without
@@ -51,218 +51,97 @@ LDSCRIPT = $(RTE_LDSCRIPT)
 endif
 
 # default path for libs
-LDLIBS += -L$(RTE_SDK_BIN)/lib
+_LDLIBS-y += -L$(RTE_SDK_BIN)/lib
 
 #
 # Order is important: from higher level to lower level
 #
-LDLIBS += --whole-archive
 
-ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS),y)
-LDLIBS += -l$(RTE_LIBNAME)
-endif
+_LDLIBS-y += --whole-archive
 
-ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS),n)
+_LDLIBS-$(CONFIG_RTE_BUILD_COMBINE_LIBS)    += -l$(RTE_LIBNAME)
 
-ifeq ($(CONFIG_RTE_LIBRTE_DISTRIBUTOR),y)
-LDLIBS += -lrte_distributor
-endif
+ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS),n)
 
-ifeq ($(CONFIG_RTE_LIBRTE_REORDER),y)
-LDLIBS += -lrte_reorder
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_DISTRIBUTOR)    += -lrte_distributor
+_LDLIBS-$(CONFIG_RTE_LIBRTE_REORDER)        += -lrte_reorder
 
-ifeq ($(CONFIG_RTE_LIBRTE_KNI),y)
 ifeq ($(CONFIG_RTE_EXEC_ENV_LINUXAPP),y)
-LDLIBS += -lrte_kni
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_KNI)            += -lrte_kni
+_LDLIBS-$(CONFIG_RTE_LIBRTE_IVSHMEM)        += -lrte_ivshmem
 endif
 
-ifeq ($(CONFIG_RTE_LIBRTE_IVSHMEM),y)
-ifeq ($(CONFIG_RTE_EXEC_ENV_LINUXAPP),y)
-LDLIBS += -lrte_ivshmem
-endif
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PIPELINE)       += -lrte_pipeline
+_LDLIBS-$(CONFIG_RTE_LIBRTE_TABLE)          += -lrte_table
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PORT)           += -lrte_port
+_LDLIBS-$(CONFIG_RTE_LIBRTE_TIMER)          += -lrte_timer
+_LDLIBS-$(CONFIG_RTE_LIBRTE_HASH)           += -lrte_hash
+_LDLIBS-$(CONFIG_RTE_LIBRTE_JOBSTATS)       += -lrte_jobstats
+_LDLIBS-$(CONFIG_RTE_LIBRTE_LPM)            += -lrte_lpm
+_LDLIBS-$(CONFIG_RTE_LIBRTE_POWER)          += -lrte_power
+_LDLIBS-$(CONFIG_RTE_LIBRTE_ACL)            += -lrte_acl
+_LDLIBS-$(CONFIG_RTE_LIBRTE_METER)          += -lrte_meter
 
-ifeq ($(CONFIG_RTE_LIBRTE_PIPELINE),y)
-LDLIBS += -lrte_pipeline
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_SCHED)          += -lrte_sched
+_LDLIBS-$(CONFIG_RTE_LIBRTE_SCHED)          += -lm
+_LDLIBS-$(CONFIG_RTE_LIBRTE_SCHED)          += -lrt
 
-ifeq ($(CONFIG_RTE_LIBRTE_TABLE),y)
-LDLIBS += -lrte_table
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PORT),y)
-LDLIBS += -lrte_port
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_TIMER),y)
-LDLIBS += -lrte_timer
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_HASH),y)
-LDLIBS += -lrte_hash
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_JOBSTATS),y)
-LDLIBS += -lrte_jobstats
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_LPM),y)
-LDLIBS += -lrte_lpm
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_POWER),y)
-LDLIBS += -lrte_power
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_ACL),y)
-LDLIBS += -lrte_acl
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_METER),y)
-LDLIBS += -lrte_meter
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_SCHED),y)
-LDLIBS += -lrte_sched
-LDLIBS += -lm
-LDLIBS += -lrt
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_VHOST), y)
-LDLIBS += -lrte_vhost
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_VHOST)          += -lrte_vhost
 
 endif # ! CONFIG_RTE_BUILD_COMBINE_LIBS
 
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_PCAP),y)
-LDLIBS += -lpcap
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_PCAP)       += -lpcap
 
-ifeq ($(CONFIG_RTE_LIBRTE_VHOST)$(CONFIG_RTE_LIBRTE_VHOST_USER),yn)
-LDLIBS += -lfuse
+ifeq ($(CONFIG_RTE_LIBRTE_VHOST_USER),n)
+_LDLIBS-$(CONFIG_RTE_LIBRTE_VHOST)          += -lfuse
 endif
 
-ifeq ($(CONFIG_RTE_LIBRTE_MLX4_PMD),y)
-LDLIBS += -libverbs
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_MLX4_PMD)       += -libverbs
 
-LDLIBS += --start-group
+_LDLIBS-y += --start-group
 
 ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS),n)
 
-ifeq ($(CONFIG_RTE_LIBRTE_KVARGS),y)
-LDLIBS += -lrte_kvargs
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_MBUF),y)
-LDLIBS += -lrte_mbuf
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_IP_FRAG),y)
-LDLIBS += -lrte_ip_frag
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_ETHER),y)
-LDLIBS += -lethdev
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_MALLOC),y)
-LDLIBS += -lrte_malloc
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_MEMPOOL),y)
-LDLIBS += -lrte_mempool
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_RING),y)
-LDLIBS += -lrte_ring
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_EAL),y)
-LDLIBS += -lrte_eal
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_CMDLINE),y)
-LDLIBS += -lrte_cmdline
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_CFGFILE),y)
-LDLIBS += -lrte_cfgfile
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_BOND),y)
-LDLIBS += -lrte_pmd_bond
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_XENVIRT),y)
-LDLIBS += -lrte_pmd_xenvirt
-LDLIBS += -lxenstore
-endif
+_LDLIBS-$(CONFIG_RTE_LIBRTE_KVARGS)         += -lrte_kvargs
+_LDLIBS-$(CONFIG_RTE_LIBRTE_MBUF)           += -lrte_mbuf
+_LDLIBS-$(CONFIG_RTE_LIBRTE_IP_FRAG)        += -lrte_ip_frag
+_LDLIBS-$(CONFIG_RTE_LIBRTE_ETHER)          += -lethdev
+_LDLIBS-$(CONFIG_RTE_LIBRTE_MALLOC)         += -lrte_malloc
+_LDLIBS-$(CONFIG_RTE_LIBRTE_MEMPOOL)        += -lrte_mempool
+_LDLIBS-$(CONFIG_RTE_LIBRTE_RING)           += -lrte_ring
+_LDLIBS-$(CONFIG_RTE_LIBRTE_EAL)            += -lrte_eal
+_LDLIBS-$(CONFIG_RTE_LIBRTE_CMDLINE)        += -lrte_cmdline
+_LDLIBS-$(CONFIG_RTE_LIBRTE_CFGFILE)        += -lrte_cfgfile
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_BOND)       += -lrte_pmd_bond
+
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_XENVIRT)    += -lrte_pmd_xenvirt
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_XENVIRT)    += -lxenstore
 
 ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),n)
 # plugins (link only if static libraries)
 
-ifeq ($(CONFIG_RTE_LIBRTE_VMXNET3_PMD),y)
-LDLIBS += -lrte_pmd_vmxnet3_uio
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_VIRTIO_PMD),y)
-LDLIBS += -lrte_pmd_virtio
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_ENIC_PMD),y)
-LDLIBS += -lrte_pmd_enic
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_I40E_PMD),y)
-LDLIBS += -lrte_pmd_i40e
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_FM10K_PMD),y)
-LDLIBS += -lrte_pmd_fm10k
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_IXGBE_PMD),y)
-LDLIBS += -lrte_pmd_ixgbe
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_E1000_PMD),y)
-LDLIBS += -lrte_pmd_e1000
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_MLX4_PMD),y)
-LDLIBS += -lrte_pmd_mlx4
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_RING),y)
-LDLIBS += -lrte_pmd_ring
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_PCAP),y)
-LDLIBS += -lrte_pmd_pcap
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_AF_PACKET),y)
-LDLIBS += -lrte_pmd_af_packet
-endif
-
-ifeq ($(CONFIG_RTE_LIBRTE_PMD_NULL),y)
-LDLIBS += -lrte_pmd_null
-endif
-
-endif # plugins
+_LDLIBS-$(CONFIG_RTE_LIBRTE_VMXNET3_PMD)    += -lrte_pmd_vmxnet3_uio
+_LDLIBS-$(CONFIG_RTE_LIBRTE_VIRTIO_PMD)     += -lrte_pmd_virtio
+_LDLIBS-$(CONFIG_RTE_LIBRTE_ENIC_PMD)       += -lrte_pmd_enic
+_LDLIBS-$(CONFIG_RTE_LIBRTE_I40E_PMD)       += -lrte_pmd_i40e
+_LDLIBS-$(CONFIG_RTE_LIBRTE_FM10K_PMD)      += -lrte_pmd_fm10k
+_LDLIBS-$(CONFIG_RTE_LIBRTE_IXGBE_PMD)      += -lrte_pmd_ixgbe
+_LDLIBS-$(CONFIG_RTE_LIBRTE_E1000_PMD)      += -lrte_pmd_e1000
+_LDLIBS-$(CONFIG_RTE_LIBRTE_MLX4_PMD)       += -lrte_pmd_mlx4
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_RING)       += -lrte_pmd_ring
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_PCAP)       += -lrte_pmd_pcap
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_AF_PACKET)  += -lrte_pmd_af_packet
+_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_NULL)       += -lrte_pmd_null
+
+endif # ! $(CONFIG_RTE_BUILD_SHARED_LIB)
 
 endif # ! CONFIG_RTE_BUILD_COMBINE_LIBS
 
-LDLIBS += $(EXECENV_LDLIBS)
-
-LDLIBS += --end-group
-
-LDLIBS += --no-whole-archive
+_LDLIBS-y += $(EXECENV_LDLIBS)
+_LDLIBS-y += --end-group
+_LDLIBS-y += --no-whole-archive
 
-LDLIBS += $(CPU_LDLIBS)
+LDLIBS += $(_LDLIBS-y) $(CPU_LDLIBS)
 
 .PHONY: all
 all: install
-- 
2.3.0

[dpdk-dev] [PATCH v10 2/2] mk:Introduce the EXTRA_LDLIBS variable

[Keith Wiles]

Signed-off-by: Keith Wiles <keith.wiles@intel.com>
---
 doc/build-sdk-quick.txt                          | 1 +
 doc/guides/prog_guide/dev_kit_build_system.rst   | 2 ++
 doc/guides/prog_guide/dev_kit_root_make_help.rst | 2 +-
 mk/rte.app.mk                                    | 2 +-
 4 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/doc/build-sdk-quick.txt b/doc/build-sdk-quick.txt
index 041a40e..bf18b48 100644
--- a/doc/build-sdk-quick.txt
+++ b/doc/build-sdk-quick.txt
@@ -13,6 +13,7 @@ Build variables
 	EXTRA_CPPFLAGS   preprocessor options
 	EXTRA_CFLAGS     compiler options
 	EXTRA_LDFLAGS    linker options
+	EXTRA_LDLIBS     linker library options
 	RTE_KERNELDIR    linux headers path
 	CROSS     toolchain prefix
 	V         verbose
diff --git a/doc/guides/prog_guide/dev_kit_build_system.rst b/doc/guides/prog_guide/dev_kit_build_system.rst
index 04f1d4e..7dc2de6 100644
--- a/doc/guides/prog_guide/dev_kit_build_system.rst
+++ b/doc/guides/prog_guide/dev_kit_build_system.rst
@@ -411,6 +411,8 @@ Variables that Can be Set/Overridden by the User in a Makefile or Command Line
 
 *   EXTRA_LDFLAGS: The content of this variable is appended after LDFLAGS when linking.
 
+*   EXTRA_LDLIBS: The content of this variable is appended after LDLIBS when linking.
+
 *   EXTRA_ASFLAGS: The content of this variable is appended after ASFLAGS when assembling.
 
 *   EXTRA_CPPFLAGS: The content of this variable is appended after CPPFLAGS when using a C preprocessor on assembly files.
diff --git a/doc/guides/prog_guide/dev_kit_root_make_help.rst b/doc/guides/prog_guide/dev_kit_root_make_help.rst
index 333b007..e522c12 100644
--- a/doc/guides/prog_guide/dev_kit_root_make_help.rst
+++ b/doc/guides/prog_guide/dev_kit_root_make_help.rst
@@ -218,7 +218,7 @@ The following variables can be specified on the command line:
 
     Enable dependency debugging. This provides some useful information about why a target is built or not.
 
-*   EXTRA_CFLAGS=, EXTRA_LDFLAGS=, EXTRA_ASFLAGS=, EXTRA_CPPFLAGS=
+*   EXTRA_CFLAGS=, EXTRA_LDFLAGS=, EXTRA_LDLIBS=, EXTRA_ASFLAGS=, EXTRA_CPPFLAGS=
 
     Append specific compilation, link or asm flags.
 
diff --git a/mk/rte.app.mk b/mk/rte.app.mk
index 4fc582a..1a2043a 100644
--- a/mk/rte.app.mk
+++ b/mk/rte.app.mk
@@ -141,7 +141,7 @@ _LDLIBS-y += $(EXECENV_LDLIBS)
 _LDLIBS-y += --end-group
 _LDLIBS-y += --no-whole-archive
 
-LDLIBS += $(_LDLIBS-y) $(CPU_LDLIBS)
+LDLIBS += $(_LDLIBS-y) $(CPU_LDLIBS) $(EXTRA_LDLIBS)
 
 .PHONY: all
 all: install
-- 
2.3.0

Re: [dpdk-dev] [PATCH v9 1/2] mk:Simplify the ifdefs in the makefile

[Wiles, Keith]

On 5/14/15, 7:30 AM, "Olivier MATZ" <olivier.matz@6wind.com> wrote:

>Hi,
>
>On 05/13/2015 06:35 PM, Keith Wiles wrote:
>> Simplify the ifdefs in rte.app.mk to make the code more
>> readable and maintainable by introducing a internal
>> _LDLIBS-y variable to build up the LDLIBS variable.
>> 
>> The new internal variable _LDLIBS-y should not be
>> used outside of the rte.app.mk file.
>> 
>> Signed-off-by: Keith Wiles <keith.wiles@intel.com>
>> ---
>>  mk/rte.app.mk | 243
>>+++++++++++++++-------------------------------------------
>>  1 file changed, 61 insertions(+), 182 deletions(-)
>> 
>> diff --git a/mk/rte.app.mk b/mk/rte.app.mk
>> index af8a1b0..1a2043a 100644
>> --- a/mk/rte.app.mk
>> +++ b/mk/rte.app.mk
>> [...]
>>  
>> -LDLIBS += $(CPU_LDLIBS)
>> +LDLIBS += $(_LDLIBS-y) $(CPU_LDLIBS) $(EXTRA_LDLIBS)
>>  
>>  .PHONY: all
>>  all: install
>
>
>You are still adding EXTRA_LDLIBS in a patch called "simplify the
>ifdefs".

I did have them split correctly and its my bad I somehow did not get then
committed correctly.

>
>A good idea before sending a new version of a patch on the mailing
>list is to check the list of the modifications that were discussed.
>Then this list can be added in the cover letter or after the "---"
>marker of your patch, allowing the reviewers to better understand
>what changed in this version.
>
>Regards,
>Olivier

Re: [dpdk-dev] [PATCH v10 1/2] mk:Simplify the ifdefs in the makefile

[Olivier MATZ]

Hi Keith,

On 05/14/2015 04:21 PM, Keith Wiles wrote:
> Simplify the ifdefs in rte.app.mk to make the code more
> readable and maintainable by introducing a internal
> _LDLIBS-y variable to build up the LDLIBS variable.
> 
> The new internal variable _LDLIBS-y should not be
> used outside of the rte.app.mk file.
> 
> Signed-off-by: Keith Wiles <keith.wiles@intel.com>

Series
Acked-by: Olivier Matz <olivier.matz@6wind.com>

Thanks,
Olivier

Re: [dpdk-dev] [PATCH v10 1/2] mk:Simplify the ifdefs in the makefile

[Thomas Monjalon]

2015-05-14 17:42, Olivier MATZ:
> Hi Keith,
> 
> On 05/14/2015 04:21 PM, Keith Wiles wrote:
> > Simplify the ifdefs in rte.app.mk to make the code more
> > readable and maintainable by introducing a internal
> > _LDLIBS-y variable to build up the LDLIBS variable.
> > 
> > The new internal variable _LDLIBS-y should not be
> > used outside of the rte.app.mk file.
> > 
> > Signed-off-by: Keith Wiles <keith.wiles@intel.com>
> 
> Series
> Acked-by: Olivier Matz <olivier.matz@6wind.com>

Applied, thanks

Re: [dpdk-dev] [PATCH v8 1/2] mk:Simplify the ifdefs in rte.app.mk

[Olivier MATZ]

Hi Keith,

On 05/13/2015 04:43 PM, Wiles, Keith wrote:
> 
> 
> On 5/13/15, 9:28 AM, "Olivier MATZ" <olivier.matz@6wind.com> wrote:
> 
>>
>> On 05/13/2015 04:04 PM, Wiles, Keith wrote:
>>>
>>>
>>> On 5/13/15, 8:56 AM, "Olivier MATZ" <olivier.matz@6wind.com> wrote:
>>>
>>>> Hi Keith,
>>>>
>>>> On 05/13/2015 03:17 PM, Wiles, Keith wrote:
>>>>>>>
>>>>>>>     endif # ifeq ($(NO_AUTOLIBS),)
>>>>>>>
>>>>>>> -LDLIBS += $(CPU_LDLIBS)
>>>>>>> +LDLIBS += $(_LDLIBS-y) $(EXTRA_LDLIBS)
>>>>>>>
>>>>>>
>>>>>> As discussed in the previous mail, all things that are about
>>>>>> EXTRA_LDLIBS should be moved in the second patch. Therefore,
>>>>>> the title of the second patch should not be "update doc...", but
>>>>>> something like "mk: introduce EXTRA_LDLIBS...".
>>>>>>
>>>>>> By the way, I missed that before, but it seems that your
>>>>>> patch removes CPU_LDLIBS, I don't think it's correct.
>>>>>
>>>>> I found no reference to CPU_LDLIBS in the docs or code other then then
>>>>> one
>>>>> line. We now have EXTRA_LDLIBS for the command line, right?
>>>>
>>>> Yes, but your patch says "simplify the ifdef". Removing
>>>> a variable (even if it is not used) in this patch is not
>>>> a good idea.
>>>>
>>>> Now, the CPU_CFLAGS, CPU_LDFLAGS, CPU_LDLIBS can be defined internally
>>>> by the rte.vars.mk in mk/arch/ or mk/machine/ directories.
>>>
>>> No docs for CPU_LDLIBS or reference to that variable, which means it
>>> does
>>> not exist, right?
>>> If it was used or documented then I would agree. Having magic variables
>>> is
>>> not a good idea. I will add the CPU_LDLIBS in to the line, but someone
>>> will have to document that variable.
>>
>> First, this variable is internal to DPDK framework. It is not
> 
> Not referenced in the code any place except the one line and not
> referenced in the docs, which means no one used that variable. By
> definition this is some magic variable that someone could use only because
> he knew about that variable.
> 
> As I stated before, I will add that variable back, but it must be
> documented, correct?
> 
> Look at the code a number of CPU_XXXX flags are commented about in the
> code.

It could be added at the same place than other CPU_* variables,
in another patch.


Olivier



> 
> machine/power8/rte.vars.mk:39:#   - can define CPU_CFLAGS variable
> (overridden by cmdline value) that
> machine/power8/rte.vars.mk:41:#   - can define CPU_LDFLAGS variable
> (overridden by cmdline value) that
> machine/power8/rte.vars.mk:43:#   - can define CPU_ASFLAGS variable
> (overridden by cmdline value) that
> machine/power8/rte.vars.mk:53:# CPU_CFLAGS =
> machine/power8/rte.vars.mk:54:# CPU_LDFLAGS =
> machine/power8/rte.vars.mk:55:# CPU_ASFLAGS =
> machine/wsm/rte.vars.mk:40:#   - can define CPU_CFLAGS variable (overriden
> by cmdline value) that
> machine/wsm/rte.vars.mk:42:#   - can define CPU_LDFLAGS variable
> (overriden by cmdline value) that
> machine/wsm/rte.vars.mk:44:#   - can define CPU_ASFLAGS variable
> (overriden by cmdline value) that
> machine/wsm/rte.vars.mk:54:# CPU_CFLAGS =
> machine/wsm/rte.vars.mk:55:# CPU_LDFLAGS =
> machine/wsm/rte.vars.mk:56:# CPU_ASFLAGS =
> machine/native/rte.vars.mk:40:#   - can define CPU_CFLAGS variable
> (overriden by cmdline value) that
> machine/native/rte.vars.mk:42:#   - can define CPU_LDFLAGS variable
> (overriden by cmdline value) that
> machine/native/rte.vars.mk:44:#   - can define CPU_ASFLAGS variable
> (overriden by cmdline value) that
> machine/native/rte.vars.mk:54:# CPU_CFLAGS =
> machine/native/rte.vars.mk:55:# CPU_LDFLAGS =
> machine/native/rte.vars.mk:56:# CPU_ASFLAGS =
> machine/native/rte.vars.mk:66:  CPU_SSE42_SUPPORT = $(shell grep SSE4\.2
> /var/run/dmesg.boot 2>/dev/null)
> machine/native/rte.vars.mk:67:  ifneq ($(CPU_SSE42_SUPPORT),)
> machine/atm/rte.vars.mk:40:#   - can define CPU_CFLAGS variable (overriden
> by cmdline value) that
> machine/atm/rte.vars.mk:42:#   - can define CPU_LDFLAGS variable
> (overriden by cmdline value) that
> machine/atm/rte.vars.mk:44:#   - can define CPU_ASFLAGS variable
> (overriden by cmdline value) that
> machine/atm/rte.vars.mk:54:# CPU_CFLAGS =
> machine/atm/rte.vars.mk:55:# CPU_LDFLAGS =
> machine/atm/rte.vars.mk:56:# CPU_ASFLAGS =
> machine/hsw/rte.vars.mk:40:#   - can define CPU_CFLAGS variable (overriden
> by cmdline value) that
> machine/hsw/rte.vars.mk:42:#   - can define CPU_LDFLAGS variable
> (overriden by cmdline value) that
> machine/hsw/rte.vars.mk:44:#   - can define CPU_ASFLAGS variable
> (overriden by cmdline value) that
> machine/hsw/rte.vars.mk:54:# CPU_CFLAGS =
> machine/hsw/rte.vars.mk:55:# CPU_LDFLAGS =
> machine/hsw/rte.vars.mk:56:# CPU_ASFLAGS =
> machine/ivb/rte.vars.mk:40:#   - can define CPU_CFLAGS variable (overriden
> by cmdline value) that
> machine/ivb/rte.vars.mk:42:#   - can define CPU_LDFLAGS variable
> (overriden by cmdline value) that
> machine/ivb/rte.vars.mk:44:#   - can define CPU_ASFLAGS variable
> (overriden by cmdline value) that
> machine/ivb/rte.vars.mk:54:# CPU_CFLAGS =
> machine/ivb/rte.vars.mk:55:# CPU_LDFLAGS =
> machine/ivb/rte.vars.mk:56:# CPU_ASFLAGS =
> machine/snb/rte.vars.mk:40:#   - can define CPU_CFLAGS variable (overriden
> by cmdline value) that
> machine/snb/rte.vars.mk:42:#   - can define CPU_LDFLAGS variable
> (overriden by cmdline value) that
> machine/snb/rte.vars.mk:44:#   - can define CPU_ASFLAGS variable
> (overriden by cmdline value) that
> machine/snb/rte.vars.mk:54:# CPU_CFLAGS =
> machine/snb/rte.vars.mk:55:# CPU_LDFLAGS =
> machine/snb/rte.vars.mk:56:# CPU_ASFLAGS =
> machine/nhm/rte.vars.mk:40:#   - can define CPU_CFLAGS variable (overriden
> by cmdline value) that
> machine/nhm/rte.vars.mk:42:#   - can define CPU_LDFLAGS variable
> (overriden by cmdline value) that
> machine/nhm/rte.vars.mk:44:#   - can define CPU_ASFLAGS variable
> (overriden by cmdline value) that
> machine/nhm/rte.vars.mk:54:# CPU_CFLAGS =
> machine/nhm/rte.vars.mk:55:# CPU_LDFLAGS =
> machine/nhm/rte.vars.mk:56:# CPU_ASFLAGS =
> machine/default/rte.vars.mk:40:#   - can define CPU_CFLAGS variable
> (overriden by cmdline value) that
> machine/default/rte.vars.mk:42:#   - can define CPU_LDFLAGS variable
> (overriden by cmdline value) that
> machine/default/rte.vars.mk:44:#   - can define CPU_ASFLAGS variable
> (overriden by cmdline value) that
> machine/default/rte.vars.mk:54:# CPU_CFLAGS =
> machine/default/rte.vars.mk:55:# CPU_LDFLAGS =
> machine/default/rte.vars.mk:56:# CPU_ASFLAGS =
> rte.lib.mk:43:CPU_LDFLAGS += --version-script=$(SRCDIR)/$(EXPORT_MAP)
> rte.lib.mk:67:LD := $(CC) $(CPU_CFLAGS)
> rte.lib.mk:68:_CPU_LDFLAGS := $(call linkerprefix,$(CPU_LDFLAGS))
> rte.lib.mk:70:_CPU_LDFLAGS := $(CPU_LDFLAGS)
> rte.lib.mk:82:O_TO_S = $(LD) $(_CPU_LDFLAGS) -shared $(OBJS-y)
> -Wl,-soname,$(LIB) -o $(LIB)
> rte.app.mk:144:LDLIBS += $(_LDLIBS-y) $(CPU_LDLIBS) $(EXTRA_LDLIBS)
> arch/x86_64/rte.vars.mk:39:#   - define CPU_CFLAGS variable (overriden by
> cmdline or previous
> arch/x86_64/rte.vars.mk:41:#   - define CPU_LDFLAGS variable (overriden by
> cmdline or previous
> arch/x86_64/rte.vars.mk:43:#   - define CPU_ASFLAGS variable (overriden by
> cmdline or previous
> arch/x86_64/rte.vars.mk:55:CPU_CFLAGS  ?= -m64
> arch/x86_64/rte.vars.mk:56:CPU_LDFLAGS ?=
> arch/x86_64/rte.vars.mk:57:CPU_ASFLAGS ?= -felf64
> arch/x86_64/rte.vars.mk:59:export ARCH CROSS CPU_CFLAGS CPU_LDFLAGS
> CPU_ASFLAGS
> arch/i686/rte.vars.mk:39:#   - define CPU_CFLAGS variable (overriden by
> cmdline or previous
> arch/i686/rte.vars.mk:41:#   - define CPU_LDFLAGS variable (overriden by
> cmdline or previous
> arch/i686/rte.vars.mk:43:#   - define CPU_ASFLAGS variable (overriden by
> cmdline or previous
> arch/i686/rte.vars.mk:55:CPU_CFLAGS  ?= -m32
> arch/i686/rte.vars.mk:56:CPU_LDFLAGS ?= -melf_i386
> arch/i686/rte.vars.mk:57:CPU_ASFLAGS ?= -felf
> arch/i686/rte.vars.mk:59:export ARCH CROSS CPU_CFLAGS CPU_LDFLAGS
> CPU_ASFLAGS
> arch/x86_x32/rte.vars.mk:39:#   - define CPU_CFLAGS variable (overridden
> by cmdline or previous
> arch/x86_x32/rte.vars.mk:41:#   - define CPU_LDFLAGS variable (overridden
> by cmdline or previous
> arch/x86_x32/rte.vars.mk:43:#   - define CPU_ASFLAGS variable (overridden
> by cmdline or previous
> arch/x86_x32/rte.vars.mk:54:CPU_CFLAGS  ?= -mx32
> arch/x86_x32/rte.vars.mk:55:CPU_LDFLAGS ?= -melf32_x86_64
> arch/x86_x32/rte.vars.mk:56:#CPU_ASFLAGS ?= -felf64
> arch/x86_x32/rte.vars.mk:59:ifneq ($(shell echo | $(CC) $(CPU_CFLAGS) -E -
> 2>/dev/null 1>/dev/null && echo 0), 0)
> arch/x86_x32/rte.vars.mk:63:export ARCH CROSS CPU_CFLAGS CPU_LDFLAGS
> CPU_ASFLAGS
> arch/ppc_64/rte.vars.mk:35:CPU_CFLAGS  ?= -m64 -DRTE_CACHE_LINE_SIZE=128
> arch/ppc_64/rte.vars.mk:36:CPU_LDFLAGS ?=
> arch/ppc_64/rte.vars.mk:37:CPU_ASFLAGS ?= -felf64
> arch/ppc_64/rte.vars.mk:39:export ARCH CROSS CPU_CFLAGS CPU_LDFLAGS
> CPU_ASFLAGS
> target/generic/rte.vars.mk:46:#   - can define CPU_CFLAGS variable
> (overriden by cmdline value) that
> target/generic/rte.vars.mk:48:#   - can define CPU_LDFLAGS variable
> (overriden by cmdline value) that
> target/generic/rte.vars.mk:50:#   - can define CPU_ASFLAGS variable
> (overriden by cmdline value) that
> target/generic/rte.vars.mk:64:#   - define CPU_CFLAGS variable (overriden
> by cmdline or previous
> target/generic/rte.vars.mk:66:#   - define CPU_LDFLAGS variable (overriden
> by cmdline or previous
> target/generic/rte.vars.mk:68:#   - define CPU_ASFLAGS variable (overriden
> by cmdline or previous
> target/generic/rte.vars.mk:110:CFLAGS := $(CPU_CFLAGS) $(EXECENV_CFLAGS)
> $(TOOLCHAIN_CFLAGS) $(MACHINE_CFLAGS)
> target/generic/rte.vars.mk:114:LDFLAGS := $(CPU_LDFLAGS)
> $(EXECENV_LDFLAGS) $(TOOLCHAIN_LDFLAGS) $(MACHINE_LDFLAGS)
> target/generic/rte.vars.mk:118:ASFLAGS := $(CPU_ASFLAGS)
> $(EXECENV_ASFLAGS) $(TOOLCHAIN_ASFLAGS) $(MACHINE_ASFLAGS)
> rte.sharelib.mk:52:LD := $(CC) $(CPU_CFLAGS)
> rte.sharelib.mk:53:O_TO_S = $(LD) $(call linkerprefix,$(CPU_LDFLAGS)) \
> rte.sharelib.mk:56:O_TO_S = $(LD) $(CPU_LDFLAGS) \
> 
> 
> 
>> documented, because the goal of the documentation is not to
>> document all internal variables. In one word, it's not a magic
>> variable at all, it is simply a variable.
>>
>> Now, the heart of the matter is that your patch silently remove
>> this line. This is not acceptable and that's why I'm commenting
>> on it. The goal of patch splitting and proper title is to separate
>> features, and win time when searching in the git log for the cause
>> of a problem.
>>
>> This is the same problem with EXTRA_LDLIBS. How can you justify
>> having 2 patches:
>> - "simplify the ifdef" that also adds the EXTRA_LDLIBS
>>  then
>> - "update the documentation for EXTRA_LDLIBS"
>>
>> Regards,
>> Olivier
>>
>>
>>
>>>>
>>>> Regards,
>>>> Olivier
>>>>
>>>
>>
> 
> 

Re: [dpdk-dev] [PATCH v8 1/2] mk:Simplify the ifdefs in rte.app.mk

[Wiles, Keith]

On 5/13/15, 9:28 AM, "Olivier MATZ" <olivier.matz@6wind.com> wrote:

>
>On 05/13/2015 04:04 PM, Wiles, Keith wrote:
>>
>>
>> On 5/13/15, 8:56 AM, "Olivier MATZ" <olivier.matz@6wind.com> wrote:
>>
>>> Hi Keith,
>>>
>>> On 05/13/2015 03:17 PM, Wiles, Keith wrote:
>>>>>>
>>>>>>     endif # ifeq ($(NO_AUTOLIBS),)
>>>>>>
>>>>>> -LDLIBS += $(CPU_LDLIBS)
>>>>>> +LDLIBS += $(_LDLIBS-y) $(EXTRA_LDLIBS)
>>>>>>
>>>>>
>>>>> As discussed in the previous mail, all things that are about
>>>>> EXTRA_LDLIBS should be moved in the second patch. Therefore,
>>>>> the title of the second patch should not be "update doc...", but
>>>>> something like "mk: introduce EXTRA_LDLIBS...".
>>>>>
>>>>> By the way, I missed that before, but it seems that your
>>>>> patch removes CPU_LDLIBS, I don't think it's correct.
>>>>
>>>> I found no reference to CPU_LDLIBS in the docs or code other then then
>>>> one
>>>> line. We now have EXTRA_LDLIBS for the command line, right?
>>>
>>> Yes, but your patch says "simplify the ifdef". Removing
>>> a variable (even if it is not used) in this patch is not
>>> a good idea.
>>>
>>> Now, the CPU_CFLAGS, CPU_LDFLAGS, CPU_LDLIBS can be defined internally
>>> by the rte.vars.mk in mk/arch/ or mk/machine/ directories.
>>
>> No docs for CPU_LDLIBS or reference to that variable, which means it
>>does
>> not exist, right?
>> If it was used or documented then I would agree. Having magic variables
>>is
>> not a good idea. I will add the CPU_LDLIBS in to the line, but someone
>> will have to document that variable.
>
>First, this variable is internal to DPDK framework. It is not

Not referenced in the code any place except the one line and not
referenced in the docs, which means no one used that variable. By
definition this is some magic variable that someone could use only because
he knew about that variable.

As I stated before, I will add that variable back, but it must be
documented, correct?

Look at the code a number of CPU_XXXX flags are commented about in the
code.

machine/power8/rte.vars.mk:39:#   - can define CPU_CFLAGS variable
(overridden by cmdline value) that
machine/power8/rte.vars.mk:41:#   - can define CPU_LDFLAGS variable
(overridden by cmdline value) that
machine/power8/rte.vars.mk:43:#   - can define CPU_ASFLAGS variable
(overridden by cmdline value) that
machine/power8/rte.vars.mk:53:# CPU_CFLAGS =
machine/power8/rte.vars.mk:54:# CPU_LDFLAGS =
machine/power8/rte.vars.mk:55:# CPU_ASFLAGS =
machine/wsm/rte.vars.mk:40:#   - can define CPU_CFLAGS variable (overriden
by cmdline value) that
machine/wsm/rte.vars.mk:42:#   - can define CPU_LDFLAGS variable
(overriden by cmdline value) that
machine/wsm/rte.vars.mk:44:#   - can define CPU_ASFLAGS variable
(overriden by cmdline value) that
machine/wsm/rte.vars.mk:54:# CPU_CFLAGS =
machine/wsm/rte.vars.mk:55:# CPU_LDFLAGS =
machine/wsm/rte.vars.mk:56:# CPU_ASFLAGS =
machine/native/rte.vars.mk:40:#   - can define CPU_CFLAGS variable
(overriden by cmdline value) that
machine/native/rte.vars.mk:42:#   - can define CPU_LDFLAGS variable
(overriden by cmdline value) that
machine/native/rte.vars.mk:44:#   - can define CPU_ASFLAGS variable
(overriden by cmdline value) that
machine/native/rte.vars.mk:54:# CPU_CFLAGS =
machine/native/rte.vars.mk:55:# CPU_LDFLAGS =
machine/native/rte.vars.mk:56:# CPU_ASFLAGS =
machine/native/rte.vars.mk:66:  CPU_SSE42_SUPPORT = $(shell grep SSE4\.2
/var/run/dmesg.boot 2>/dev/null)
machine/native/rte.vars.mk:67:  ifneq ($(CPU_SSE42_SUPPORT),)
machine/atm/rte.vars.mk:40:#   - can define CPU_CFLAGS variable (overriden
by cmdline value) that
machine/atm/rte.vars.mk:42:#   - can define CPU_LDFLAGS variable
(overriden by cmdline value) that
machine/atm/rte.vars.mk:44:#   - can define CPU_ASFLAGS variable
(overriden by cmdline value) that
machine/atm/rte.vars.mk:54:# CPU_CFLAGS =
machine/atm/rte.vars.mk:55:# CPU_LDFLAGS =
machine/atm/rte.vars.mk:56:# CPU_ASFLAGS =
machine/hsw/rte.vars.mk:40:#   - can define CPU_CFLAGS variable (overriden
by cmdline value) that
machine/hsw/rte.vars.mk:42:#   - can define CPU_LDFLAGS variable
(overriden by cmdline value) that
machine/hsw/rte.vars.mk:44:#   - can define CPU_ASFLAGS variable
(overriden by cmdline value) that
machine/hsw/rte.vars.mk:54:# CPU_CFLAGS =
machine/hsw/rte.vars.mk:55:# CPU_LDFLAGS =
machine/hsw/rte.vars.mk:56:# CPU_ASFLAGS =
machine/ivb/rte.vars.mk:40:#   - can define CPU_CFLAGS variable (overriden
by cmdline value) that
machine/ivb/rte.vars.mk:42:#   - can define CPU_LDFLAGS variable
(overriden by cmdline value) that
machine/ivb/rte.vars.mk:44:#   - can define CPU_ASFLAGS variable
(overriden by cmdline value) that
machine/ivb/rte.vars.mk:54:# CPU_CFLAGS =
machine/ivb/rte.vars.mk:55:# CPU_LDFLAGS =
machine/ivb/rte.vars.mk:56:# CPU_ASFLAGS =
machine/snb/rte.vars.mk:40:#   - can define CPU_CFLAGS variable (overriden
by cmdline value) that
machine/snb/rte.vars.mk:42:#   - can define CPU_LDFLAGS variable
(overriden by cmdline value) that
machine/snb/rte.vars.mk:44:#   - can define CPU_ASFLAGS variable
(overriden by cmdline value) that
machine/snb/rte.vars.mk:54:# CPU_CFLAGS =
machine/snb/rte.vars.mk:55:# CPU_LDFLAGS =
machine/snb/rte.vars.mk:56:# CPU_ASFLAGS =
machine/nhm/rte.vars.mk:40:#   - can define CPU_CFLAGS variable (overriden
by cmdline value) that
machine/nhm/rte.vars.mk:42:#   - can define CPU_LDFLAGS variable
(overriden by cmdline value) that
machine/nhm/rte.vars.mk:44:#   - can define CPU_ASFLAGS variable
(overriden by cmdline value) that
machine/nhm/rte.vars.mk:54:# CPU_CFLAGS =
machine/nhm/rte.vars.mk:55:# CPU_LDFLAGS =
machine/nhm/rte.vars.mk:56:# CPU_ASFLAGS =
machine/default/rte.vars.mk:40:#   - can define CPU_CFLAGS variable
(overriden by cmdline value) that
machine/default/rte.vars.mk:42:#   - can define CPU_LDFLAGS variable
(overriden by cmdline value) that
machine/default/rte.vars.mk:44:#   - can define CPU_ASFLAGS variable
(overriden by cmdline value) that
machine/default/rte.vars.mk:54:# CPU_CFLAGS =
machine/default/rte.vars.mk:55:# CPU_LDFLAGS =
machine/default/rte.vars.mk:56:# CPU_ASFLAGS =
rte.lib.mk:43:CPU_LDFLAGS += --version-script=$(SRCDIR)/$(EXPORT_MAP)
rte.lib.mk:67:LD := $(CC) $(CPU_CFLAGS)
rte.lib.mk:68:_CPU_LDFLAGS := $(call linkerprefix,$(CPU_LDFLAGS))
rte.lib.mk:70:_CPU_LDFLAGS := $(CPU_LDFLAGS)
rte.lib.mk:82:O_TO_S = $(LD) $(_CPU_LDFLAGS) -shared $(OBJS-y)
-Wl,-soname,$(LIB) -o $(LIB)
rte.app.mk:144:LDLIBS += $(_LDLIBS-y) $(CPU_LDLIBS) $(EXTRA_LDLIBS)
arch/x86_64/rte.vars.mk:39:#   - define CPU_CFLAGS variable (overriden by
cmdline or previous
arch/x86_64/rte.vars.mk:41:#   - define CPU_LDFLAGS variable (overriden by
cmdline or previous
arch/x86_64/rte.vars.mk:43:#   - define CPU_ASFLAGS variable (overriden by
cmdline or previous
arch/x86_64/rte.vars.mk:55:CPU_CFLAGS  ?= -m64
arch/x86_64/rte.vars.mk:56:CPU_LDFLAGS ?=
arch/x86_64/rte.vars.mk:57:CPU_ASFLAGS ?= -felf64
arch/x86_64/rte.vars.mk:59:export ARCH CROSS CPU_CFLAGS CPU_LDFLAGS
CPU_ASFLAGS
arch/i686/rte.vars.mk:39:#   - define CPU_CFLAGS variable (overriden by
cmdline or previous
arch/i686/rte.vars.mk:41:#   - define CPU_LDFLAGS variable (overriden by
cmdline or previous
arch/i686/rte.vars.mk:43:#   - define CPU_ASFLAGS variable (overriden by
cmdline or previous
arch/i686/rte.vars.mk:55:CPU_CFLAGS  ?= -m32
arch/i686/rte.vars.mk:56:CPU_LDFLAGS ?= -melf_i386
arch/i686/rte.vars.mk:57:CPU_ASFLAGS ?= -felf
arch/i686/rte.vars.mk:59:export ARCH CROSS CPU_CFLAGS CPU_LDFLAGS
CPU_ASFLAGS
arch/x86_x32/rte.vars.mk:39:#   - define CPU_CFLAGS variable (overridden
by cmdline or previous
arch/x86_x32/rte.vars.mk:41:#   - define CPU_LDFLAGS variable (overridden
by cmdline or previous
arch/x86_x32/rte.vars.mk:43:#   - define CPU_ASFLAGS variable (overridden
by cmdline or previous
arch/x86_x32/rte.vars.mk:54:CPU_CFLAGS  ?= -mx32
arch/x86_x32/rte.vars.mk:55:CPU_LDFLAGS ?= -melf32_x86_64
arch/x86_x32/rte.vars.mk:56:#CPU_ASFLAGS ?= -felf64
arch/x86_x32/rte.vars.mk:59:ifneq ($(shell echo | $(CC) $(CPU_CFLAGS) -E -
2>/dev/null 1>/dev/null && echo 0), 0)
arch/x86_x32/rte.vars.mk:63:export ARCH CROSS CPU_CFLAGS CPU_LDFLAGS
CPU_ASFLAGS
arch/ppc_64/rte.vars.mk:35:CPU_CFLAGS  ?= -m64 -DRTE_CACHE_LINE_SIZE=128
arch/ppc_64/rte.vars.mk:36:CPU_LDFLAGS ?=
arch/ppc_64/rte.vars.mk:37:CPU_ASFLAGS ?= -felf64
arch/ppc_64/rte.vars.mk:39:export ARCH CROSS CPU_CFLAGS CPU_LDFLAGS
CPU_ASFLAGS
target/generic/rte.vars.mk:46:#   - can define CPU_CFLAGS variable
(overriden by cmdline value) that
target/generic/rte.vars.mk:48:#   - can define CPU_LDFLAGS variable
(overriden by cmdline value) that
target/generic/rte.vars.mk:50:#   - can define CPU_ASFLAGS variable
(overriden by cmdline value) that
target/generic/rte.vars.mk:64:#   - define CPU_CFLAGS variable (overriden
by cmdline or previous
target/generic/rte.vars.mk:66:#   - define CPU_LDFLAGS variable (overriden
by cmdline or previous
target/generic/rte.vars.mk:68:#   - define CPU_ASFLAGS variable (overriden
by cmdline or previous
target/generic/rte.vars.mk:110:CFLAGS := $(CPU_CFLAGS) $(EXECENV_CFLAGS)
$(TOOLCHAIN_CFLAGS) $(MACHINE_CFLAGS)
target/generic/rte.vars.mk:114:LDFLAGS := $(CPU_LDFLAGS)
$(EXECENV_LDFLAGS) $(TOOLCHAIN_LDFLAGS) $(MACHINE_LDFLAGS)
target/generic/rte.vars.mk:118:ASFLAGS := $(CPU_ASFLAGS)
$(EXECENV_ASFLAGS) $(TOOLCHAIN_ASFLAGS) $(MACHINE_ASFLAGS)
rte.sharelib.mk:52:LD := $(CC) $(CPU_CFLAGS)
rte.sharelib.mk:53:O_TO_S = $(LD) $(call linkerprefix,$(CPU_LDFLAGS)) \
rte.sharelib.mk:56:O_TO_S = $(LD) $(CPU_LDFLAGS) \



>documented, because the goal of the documentation is not to
>document all internal variables. In one word, it's not a magic
>variable at all, it is simply a variable.
>
>Now, the heart of the matter is that your patch silently remove
>this line. This is not acceptable and that's why I'm commenting
>on it. The goal of patch splitting and proper title is to separate
>features, and win time when searching in the git log for the cause
>of a problem.
>
>This is the same problem with EXTRA_LDLIBS. How can you justify
>having 2 patches:
>- "simplify the ifdef" that also adds the EXTRA_LDLIBS
>  then
>- "update the documentation for EXTRA_LDLIBS"
>
>Regards,
>Olivier
>
>
>
>>>
>>> Regards,
>>> Olivier
>>>
>>
>