In the pkg-config file generation, derive the short name from the library

name instead of passing it as a parameter.

Originally committed as revision 13063 to svn://svn.ffmpeg.org/ffmpeg/trunk

configure

@@ -2129,6 +2129,7 @@ fi
 
 pkgconfig_generate(){
 name=$1
+shortname=${name#lib}
 comment=$2
 version=$3
 libs=$4
@@ -2144,7 +2145,7 @@ Description: $comment
 Version: $version
 Requires: $requires
 Conflicts:
-Libs: -L\${libdir} $libs
+Libs: -L\${libdir} -l${shortname} $libs
 Cflags: -I\${includedir}
 EOF
 }
@@ -2172,24 +2173,24 @@ Cflags: -I\${includedir}
 EOF
 }
 
-pkgconfig_generate libavutil "FFmpeg utility library" "$LIBAVUTIL_VERSION" -lavutil ""
+pkgconfig_generate libavutil "FFmpeg utility library" "$LIBAVUTIL_VERSION"
 pkgconfig_generate_uninstalled libavutil "FFmpeg utility library" "$LIBAVUTIL_VERSION"
 
-pkgconfig_generate libavcodec "FFmpeg codec library" "$LIBAVCODEC_VERSION" "-lavcodec $extralibs" "$pkg_requires libavutil = $LIBAVUTIL_VERSION"
+pkgconfig_generate libavcodec "FFmpeg codec library" "$LIBAVCODEC_VERSION" "$extralibs" "$pkg_requires libavutil = $LIBAVUTIL_VERSION"
 pkgconfig_generate_uninstalled libavcodec "FFmpeg codec library" "$LIBAVCODEC_VERSION" "$extralibs" "$pkg_requires libavutil = $LIBAVUTIL_VERSION"
 
-pkgconfig_generate libavformat "FFmpeg container format library" "$LIBAVFORMAT_VERSION" "-lavformat $extralibs" "$pkg_requires libavcodec = $LIBAVCODEC_VERSION"
+pkgconfig_generate libavformat "FFmpeg container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "$pkg_requires libavcodec = $LIBAVCODEC_VERSION"
 pkgconfig_generate_uninstalled libavformat "FFmpeg container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "$pkg_requires libavcodec = $LIBAVCODEC_VERSION"
 
-pkgconfig_generate libavdevice "FFmpeg device handling library" "$LIBAVDEVICE_VERSION" "-lavdevice $extralibs" "$pkg_requires libavformat = $LIBAVFORMAT_VERSION"
+pkgconfig_generate libavdevice "FFmpeg device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "$pkg_requires libavformat = $LIBAVFORMAT_VERSION"
 pkgconfig_generate_uninstalled libavdevice "FFmpeg device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "$pkg_requires libavformat = $LIBAVFORMAT_VERSION"
 if enabled postproc; then
-    pkgconfig_generate libpostproc "FFmpeg post processing library" "$LIBPOSTPROC_VERSION" -lpostproc ""
+    pkgconfig_generate libpostproc "FFmpeg post processing library" "$LIBPOSTPROC_VERSION"
     pkgconfig_generate_uninstalled libpostproc "FFmpeg post processing library" "$LIBPOSTPROC_VERSION"
 fi
 
 if enabled swscale; then
-    pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" -lswscale "libavutil = $LIBAVUTIL_VERSION"
+    pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"
     pkgconfig_generate_uninstalled libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"
 else
     pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "" "$pkg_requires libavcodec = $LIBAVCODEC_VERSION"
@@ -2199,6 +2200,6 @@ else
 fi
 
 if enabled avfilter; then
-  pkgconfig_generate libavfilter "FFmpeg video filtering library" "$LIBAVFILTER_VERSION" "-lavfilter $extralibs" "$pkg_requires libavutil = $LIBAVUTIL_VERSION"
+  pkgconfig_generate libavfilter "FFmpeg video filtering library" "$LIBAVFILTER_VERSION" "$extralibs" "$pkg_requires libavutil = $LIBAVUTIL_VERSION"
   pkgconfig_generate_uninstalled libavfilter "FFmpeg video filtering library" "$LIBAVFILTER_VERSION" "$extralibs" "$pkg_requires libavutil = $LIBAVUTIL_VERSION"
 fi