[dpdk-dev] [PACTH v2 1/2] mk: use LDLIBS variable when building the shared object file

Nelio Laranjeiro nelio.laranjeiro at 6wind.com
Thu Jul 30 16:48:23 CEST 2015

Some .so libraries needs to be linked with external libraries.  For that the
LDLIBS variable should be present on the link line when those .so files are
created.  PMD Makefile is responsible for filling the LDLIBS variable with
the link to the external library it needs.

Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro at 6wind.com>
Acked-by: Olivier Matz <olivier.matz at 6wind.com>
Changelog: add missing EXTRA_LDFLAGS variable necessary to link with an
external library when it is not installed on the system or located somewhere

 mk/rte.lib.mk | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mk/rte.lib.mk b/mk/rte.lib.mk
index 9ff5cce..fcc8e20 100644
--- a/mk/rte.lib.mk
+++ b/mk/rte.lib.mk
@@ -81,7 +81,8 @@ O_TO_A_DO = @set -e; \
 	$(O_TO_A) && \
 	echo $(O_TO_A_CMD) > $(call exe2cmd,$(@))
-O_TO_S = $(LD) $(_CPU_LDFLAGS) -shared $(OBJS-y) -Wl,-soname,$(LIB) -o $(LIB)
+O_TO_S = $(LD) $(_CPU_LDFLAGS) $(EXTRA_LDFLAGS) $(LDLIBS) -shared $(OBJS-y) \
+	 -Wl,-soname,$(LIB) -o $(LIB)
 O_TO_S_STR = $(subst ','\'',$(O_TO_S)) #'# fix syntax highlight
 O_TO_S_DISP = $(if $(V),"$(O_TO_S_STR)","  LD $(@)")
 O_TO_S_DO = @set -e; \

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