[dpdk-dev] [PATCH 2/6] fix fm10k driver build error when gcc version elder than 4.4

[Yong Liu <yong.liu@intel.com>]

From: Marvin Liu <yong.liu@intel.com>

Build fm10k driver in Suse11 SP3 will be failed for unrecognized flag.
cc1: error: unrecognized command line option "-Wno-unused-but-set-variable"

This flag is supported from gcc 4.4, so add gcc version check in fm10k.
In the same time, make option check more clear in ixgbe driver.

Signed-off-by: Marvin Liu <yong.liu@intel.com>

diff --git a/lib/librte_pmd_fm10k/Makefile b/lib/librte_pmd_fm10k/Makefile
index 998bf23..7516d37 100644
--- a/lib/librte_pmd_fm10k/Makefile
+++ b/lib/librte_pmd_fm10k/Makefile
@@ -62,13 +62,15 @@ else
 #
 # CFLAGS for gcc
 #
-ifeq ($(shell test $(GCC_VERSION) -ge 44 && echo 1), 1)
-CFLAGS     += -Wno-deprecated
-endif
 CFLAGS_BASE_DRIVER = -Wno-unused-parameter -Wno-unused-value
 CFLAGS_BASE_DRIVER += -Wno-strict-aliasing -Wno-format-extra-args
-CFLAGS_BASE_DRIVER += -Wno-unused-variable -Wno-unused-but-set-variable
+CFLAGS_BASE_DRIVER += -Wno-unused-variable
 CFLAGS_BASE_DRIVER += -Wno-missing-field-initializers
+
+ifeq ($(shell test $(GCC_VERSION) -ge 44 && echo 1), 1)
+CFLAGS     += -Wno-deprecated
+CFLAGS_BASE_DRIVER += -Wno-unused-but-set-variable
+endif
 endif
 
 #
diff --git a/lib/librte_pmd_ixgbe/Makefile b/lib/librte_pmd_ixgbe/Makefile
index 9a5cd33..ae36202 100644
--- a/lib/librte_pmd_ixgbe/Makefile
+++ b/lib/librte_pmd_ixgbe/Makefile
@@ -62,13 +62,14 @@ else
 #
 ifeq ($(shell test $(GCC_VERSION) -ge 44 && echo 1), 1)
 CFLAGS     += -Wno-deprecated
+CFLAGS_ixgbe_common.o += -Wno-unused-but-set-variable
+CFLAGS_ixgbe_x550.o += -Wno-unused-but-set-variable
 endif
 CFLAGS_BASE_DRIVER = -Wno-unused-parameter -Wno-unused-value
 CFLAGS_BASE_DRIVER += -Wno-strict-aliasing -Wno-format-extra-args
 
 ifeq ($(shell test $(GCC_VERSION) -ge 46 && echo 1), 1)
-CFLAGS_ixgbe_common.o += -Wno-unused-but-set-variable
-CFLAGS_ixgbe_x550.o += -Wno-unused-but-set-variable -Wno-maybe-uninitialized
+CFLAGS_ixgbe_x550.o += -Wno-maybe-uninitialized
 endif
 
 ifeq ($(shell test $(GCC_VERSION) -ge 50 && echo 1), 1)
-- 
1.9.3