[dpdk-dev] [PATCH v3 01/33] meson: add libatomic as a global dependency for i686 clang

[<jerinj@marvell.com>]

From: Pavan Nikhilesh <pbhagavatula@marvell.com>

Add libatomic as a global dependency when compiling for 32-bit using
clang. As we need libatomic for 64-bit atomic ops.

Cc: bruce.richardson@intel.com
Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
---
 config/meson.build                  | 10 ++++++++++
 drivers/event/octeontx/meson.build  |  5 -----
 drivers/event/octeontx2/meson.build |  5 -----
 drivers/event/opdl/meson.build      |  5 -----
 examples/l2fwd-event/meson.build    |  5 -----
 lib/librte_distributor/meson.build  |  5 -----
 lib/librte_rcu/meson.build          |  5 -----
 7 files changed, 10 insertions(+), 30 deletions(-)

diff --git a/config/meson.build b/config/meson.build
index abedd76f2..6e5530110 100644
--- a/config/meson.build
+++ b/config/meson.build
@@ -173,6 +173,16 @@ if pcap_dep.found() and cc.has_header('pcap.h', dependencies: pcap_dep)
 	dpdk_extra_ldflags += '-lpcap'
 endif
 
+
+# for clang 32-bit compiles we need libatomic for 64-bit atomic ops
+if cc.get_id() == 'clang' and dpdk_conf.get('RTE_ARCH_64') == false
+	atomic_dep = cc.find_library('atomic', required: true)
+	if atomic_dep.found()
+		add_project_link_arguments('-latomic', language: 'c')
+		dpdk_extra_ldflags += '-latomic'
+	endif
+endif
+
 # add -include rte_config to cflags
 add_project_arguments('-include', 'rte_config.h', language: 'c')
 
diff --git a/drivers/event/octeontx/meson.build b/drivers/event/octeontx/meson.build
index 73118a485..2b74bb62d 100644
--- a/drivers/event/octeontx/meson.build
+++ b/drivers/event/octeontx/meson.build
@@ -11,8 +11,3 @@ sources = files('ssovf_worker.c',
 )
 
 deps += ['common_octeontx', 'mempool_octeontx', 'bus_vdev', 'pmd_octeontx']
-
-# for clang 32-bit compiles we need libatomic for 64-bit atomic ops
-if cc.get_id() == 'clang' and dpdk_conf.get('RTE_ARCH_64') == false
-	ext_deps += cc.find_library('atomic')
-endif
diff --git a/drivers/event/octeontx2/meson.build b/drivers/event/octeontx2/meson.build
index 56febb8d8..dfe8fc4b2 100644
--- a/drivers/event/octeontx2/meson.build
+++ b/drivers/event/octeontx2/meson.build
@@ -20,11 +20,6 @@ if not dpdk_conf.get('RTE_ARCH_64')
 	extra_flags += ['-Wno-int-to-pointer-cast', '-Wno-pointer-to-int-cast']
 endif
 
-# for clang 32-bit compiles we need libatomic for 64-bit atomic ops
-if cc.get_id() == 'clang' and dpdk_conf.get('RTE_ARCH_64') == false
-	ext_deps += cc.find_library('atomic')
-endif
-
 foreach flag: extra_flags
 	if cc.has_argument(flag)
 		cflags += flag
diff --git a/drivers/event/opdl/meson.build b/drivers/event/opdl/meson.build
index e67b164e3..566462f4c 100644
--- a/drivers/event/opdl/meson.build
+++ b/drivers/event/opdl/meson.build
@@ -10,8 +10,3 @@ sources = files(
 	'opdl_test.c',
 )
 deps += ['bus_vdev']
-
-# for clang 32-bit compiles we need libatomic for 64-bit atomic ops
-if cc.get_id() == 'clang' and dpdk_conf.get('RTE_ARCH_64') == false
-	ext_deps += cc.find_library('atomic')
-endif
diff --git a/examples/l2fwd-event/meson.build b/examples/l2fwd-event/meson.build
index c4664c3a3..4e9a069d6 100644
--- a/examples/l2fwd-event/meson.build
+++ b/examples/l2fwd-event/meson.build
@@ -16,8 +16,3 @@ sources = files(
 	'l2fwd_event_internal_port.c',
 	'l2fwd_event_generic.c'
 )
-
-# for clang 32-bit compiles we need libatomic for 64-bit atomic ops
-if cc.get_id() == 'clang' and dpdk_conf.get('RTE_ARCH_64') == false
-	ext_deps += cc.find_library('atomic')
-endif
diff --git a/lib/librte_distributor/meson.build b/lib/librte_distributor/meson.build
index 266af6434..bd12ddb2f 100644
--- a/lib/librte_distributor/meson.build
+++ b/lib/librte_distributor/meson.build
@@ -9,8 +9,3 @@ else
 endif
 headers = files('rte_distributor.h')
 deps += ['mbuf']
-
-# for clang 32-bit compiles we need libatomic for 64-bit atomic ops
-if cc.get_id() == 'clang' and dpdk_conf.get('RTE_ARCH_64') == false
-	ext_deps += cc.find_library('atomic')
-endif
diff --git a/lib/librte_rcu/meson.build b/lib/librte_rcu/meson.build
index 62920ba02..0c2d5a2e0 100644
--- a/lib/librte_rcu/meson.build
+++ b/lib/librte_rcu/meson.build
@@ -5,8 +5,3 @@ allow_experimental_apis = true
 
 sources = files('rte_rcu_qsbr.c')
 headers = files('rte_rcu_qsbr.h')
-
-# for clang 32-bit compiles we need libatomic for 64-bit atomic ops
-if cc.get_id() == 'clang' and dpdk_conf.get('RTE_ARCH_64') == false
-	ext_deps += cc.find_library('atomic')
-endif
-- 
2.25.1