configure: Fix ld flags when rpath is enabled.

Provide correct rpath flags to ld when --enable-rpath is provided.

diff --git a/configure b/configure
index ddd0eeb..413cf9a 100755 (executable)
--- a/configure
+++ b/configure
@@ -4823,7 +4823,7 @@ check_disable_warning -Wno-pointer-sign
 # add some linker flags
 check_ldflags -Wl,--warn-common
 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
-enabled rpath && add_ldflags -Wl,-rpath=$libdir
+enabled rpath && add_ldflags -Wl,-rpath,$libdir
 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
 
 # add some strip flags