[dpdk-dev] mlx: fix warnings for unused compiler arguments
Checks
Commit Message
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")
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
---
drivers/net/mlx4/Makefile | 7 ++++++-
drivers/net/mlx5/Makefile | 7 ++++++-
2 files changed, 12 insertions(+), 2 deletions(-)
Comments
> On Mar 29, 2018, at 6:36 AM, Bruce Richardson <bruce.richardson@intel.com> wrote:
>
> 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")
>
> Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
> ---
Acked-by: Yongseok Koh <yskoh@mellanox.com>
Thanks
Thursday, March 29, 2018 11:54 PM, Yongseok Koh:
>
> > On Mar 29, 2018, at 6:36 AM, Bruce Richardson
> <bruce.richardson@intel.com> wrote:
> >
> > 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 $LINK_USING_CC in the Makefiles and prefixing
> > the LDFLAGS appropriately if set.
> >
> > Fixes: 27cea11686ff ("net/mlx4: spawn rdma-core dependency plug-in")
> > Fixes: 59b91bec12c6 ("net/mlx5: spawn rdma-core dependency plug-in")
> >
> > Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
> > ---
> Acked-by: Yongseok Koh <yskoh@mellanox.com>
Applied to next-net-mlx, thanks.
>
> Thanks
@@ -132,8 +132,13 @@ ifeq ($(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 $@ $< -libverbs -lmlx4
@@ -181,8 +181,13 @@ ifeq ($(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