[libav-devel] [PATCH] build: Add an option for passing linker flags to the shared library build

[Diego Biurrun]

From: Janne Grunau <janne-li...@jannau.net>

Also employ this mechanism to pass $libdir to the runtime library search
path if rpath is enabled. This fixes underlinking of some test binaries
on some systems.
---
 avbuild/library.mak |  2 +-
 configure           | 11 ++++++++++-
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/avbuild/library.mak b/avbuild/library.mak
index 2095f61..3075754 100644
--- a/avbuild/library.mak
+++ b/avbuild/library.mak
@@ -48,7 +48,7 @@ $(SUBDIR)$(SLIBNAME): $(SUBDIR)$(SLIBNAME_WITH_MAJOR)
 
 $(SUBDIR)$(SLIBNAME_WITH_MAJOR): $(OBJS) $(SUBDIR)lib$(NAME).ver $(DEP_LIBS)
        $(SLIB_CREATE_DEF_CMD)
-       $$(LD) $(SHFLAGS) $(LDFLAGS) $$(LD_O) $$(filter %.o,$$^) $(FFEXTRALIBS)
+       $$(LD) $(SHFLAGS) $(LDFLAGS) $(LDSOFLAGS) $$(LD_O) $$(filter %.o,$$^) 
$(FFEXTRALIBS)
        $(SLIB_EXTRA_CMD)
 
 clean::
diff --git a/configure b/configure
index 22de1b3..e213cb3 100755
--- a/configure
+++ b/configure
@@ -283,6 +283,7 @@ Toolchain options:
   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
+  --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
   --extra-libs=ELIBS       add ELIBS [$ELIBS]
   --extra-version=STRING   version string suffix []
   --optflags=OPTFLAGS      override optimization-related compiler flags
@@ -740,6 +741,10 @@ add_ldexeflags(){
     append LDEXEFLAGS $($ldflags_filter "$@")
 }
 
+add_ldsoflags(){
+    append LDSOFLAGS $($ldflags_filter "$@")
+}
+
 add_stripflags(){
     append STRIPFLAGS "$@"
 }
@@ -2802,6 +2807,9 @@ for opt do
         --extra-ldexeflags=*)
             add_ldexeflags $optval
         ;;
+        --extra-ldsoflags=*)
+            add_ldsoflags $optval
+        ;;
         --extra-libs=*)
             add_extralibs $optval
         ;;
@@ -4946,7 +4954,7 @@ EOF
 # add some linker flags
 check_ldflags -Wl,--warn-common
 check_ldflags 
-Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
-enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
+enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags 
-Wl,-rpath,$libdir
 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
 
 # add some strip flags
@@ -5406,6 +5414,7 @@ LD_PATH=$LD_PATH
 DLLTOOL=$dlltool
 LDFLAGS=$LDFLAGS
 LDEXEFLAGS=$LDEXEFLAGS
+LDSOFLAGS=$LDSOFLAGS
 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
 STRIPFLAGS=$STRIPFLAGS
 X86ASMFLAGS=$X86ASMFLAGS
-- 
2.1.4

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