From 97a0bad87c8d05a3b428e33289efdb18757c47ce Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Reimar=20D=C3=B6ffinger?= <Reimar.Doeffinger@gmx.de>
Date: Sun, 10 Nov 2013 09:02:51 +0100
Subject: [PATCH] Add --enable-rpath option to add -Wl,-rpath to pkg-config
 files.
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This allows installing into e.g. /usr/lib/ffmpeg and binaries linked
against ffmpeg will pick these .so file while binaries linked against
some fork or different version will pick the libraries in /usr/lib.
There will be still some issues for binaries that (indirectly) end up
depending on multiple variants, but for the simpler cases it should allow
different applications to use different (compatible) variants that
are installed at the same time.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
---
 configure | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/configure b/configure
index b2161e1a56..e4eb01cc32 100755
--- a/configure
+++ b/configure
@@ -87,6 +87,8 @@ Standard options:
   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
   --incdir=DIR             install includes in DIR [PREFIX/include]
   --mandir=DIR             install man page in DIR [PREFIX/share/man]
+  --enable-rpath           use rpath to allow installing libraries in paths
+                           not part of the dynamic linker search path
 
 Licensing options:
   --enable-gpl             allow use of GPL code, the resulting libs
@@ -1612,6 +1614,7 @@ CMDLINE_SELECT="
     logging
     lto
     optimizations
+    rpath
     stripping
 "
 
@@ -4468,6 +4471,7 @@ 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
 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
 
 enabled xmm_clobber_test &&
@@ -4980,7 +4984,7 @@ Version: $version
 Requires: $(enabled shared || echo $requires)
 Requires.private: $(enabled shared && echo $requires)
 Conflicts:
-Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
+Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
 Libs.private: $(enabled shared && echo $libs)
 Cflags: -I\${includedir}
 EOF