net/mlx: fix warnings for unused compiler arguments

When linking the mlx glue code libraries using CC, the linker arguments in
LDFLAGS are not prefixed with -Wl. [The EXTRA_LDFLAGS are though.] This
leads to warning messages on build:

clang-5.0: warning: argument unused during compilation: '-e xport-dynamic'

Fix this by checking for $LINK_USING_CC in the Makefiles and prefixing the
LDFLAGS appropriately if set.

Fixes: 27cea11686ff ("net/mlx4: spawn rdma-core dependency plug-in")
Fixes: 59b91bec12c6 ("net/mlx5: spawn rdma-core dependency plug-in")
Cc: stable@dpdk.org
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Yongseok Koh <yskoh@mellanox.com>

diff --git a/drivers/net/mlx4/Makefile b/drivers/net/mlx4/Makefile
index 8a6287f..ac5b67f 100644 (file)
--- a/drivers/net/mlx4/Makefile
+++ b/drivers/net/mlx4/Makefile
@@ -106,8 +106,13 @@ ifeq ($(CONFIG_RTE_LIBRTE_MLX4_DLOPEN_DEPS),y)
 
 $(LIB): $(LIB_GLUE)
 
+ifeq ($(LINK_USING_CC),1)
+GLUE_LDFLAGS := $(call linkerprefix,$(LDFLAGS))
+else
+GLUE_LDFLAGS := $(LDFLAGS)
+endif
 $(LIB_GLUE): mlx4_glue.o
-       $Q $(LD) $(LDFLAGS) $(EXTRA_LDFLAGS) \
+       $Q $(LD) $(GLUE_LDFLAGS) $(EXTRA_LDFLAGS) \
                -Wl,-h,$(LIB_GLUE) \
                -s -shared -o $@ $< -libverbs -lmlx4
 

diff --git a/drivers/net/mlx5/Makefile b/drivers/net/mlx5/Makefile
index 6c506a4..86d3afe 100644 (file)
--- a/drivers/net/mlx5/Makefile
+++ b/drivers/net/mlx5/Makefile
@@ -157,8 +157,13 @@ ifeq ($(CONFIG_RTE_LIBRTE_MLX5_DLOPEN_DEPS),y)
 
 $(LIB): $(LIB_GLUE)
 
+ifeq ($(LINK_USING_CC),1)
+GLUE_LDFLAGS := $(call linkerprefix,$(LDFLAGS))
+else
+GLUE_LDFLAGS := $(LDFLAGS)
+endif
 $(LIB_GLUE): mlx5_glue.o
-       $Q $(LD) $(LDFLAGS) $(EXTRA_LDFLAGS) \
+       $Q $(LD) $(GLUE_LDFLAGS) $(EXTRA_LDFLAGS) \
                -Wl,-h,$(LIB_GLUE) \
                -s -shared -o $@ $< -libverbs -lmlx5