add libwebpdecoder.pc

Change-Id: Ifc47549a9fe206fa174236664345d3ee064849f5

configure.ac

@@ -285,7 +285,7 @@ AC_CONFIG_FILES([Makefile src/Makefile man/Makefile \
                  src/enc/Makefile src/dsp/Makefile \
                  src/demux/Makefile src/mux/Makefile \
                  src/utils/Makefile \
-                 src/libwebp.pc])
+                 src/libwebp.pc src/libwebpdecoder.pc])
 
 
 AC_OUTPUT

src/Makefile.am

@@ -33,6 +33,7 @@ libwebp_la_LIBADD += utils/libwebputils.la
 # symbols in shared libraries to be resolved at library creation.
 libwebp_la_LDFLAGS = -no-undefined -version-info 4:1:0
 libwebpincludedir = $(includedir)/webp
+pkgconfig_DATA = libwebp.pc
 
 if BUILD_LIBWEBPDECODER
   libwebpdecoder_la_SOURCES =
@@ -47,7 +48,7 @@ if BUILD_LIBWEBPDECODER
 
   libwebpdecoder_la_LDFLAGS = -no-undefined -version-info 0:0:0
   libwebpdecoderincludedir = $(includedir)/webp
+  pkgconfig_DATA += libwebpdecoder.pc
 endif
 
-pkgconfig_DATA = libwebp.pc
 ${pkgconfig_DATA}: ${top_builddir}/config.status

src/libwebpdecoder.pc.in

@@ -0,0 +1,11 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: libwebpdecoder
+Description: Library for the WebP graphics format (decode only)
+Version: @PACKAGE_VERSION@
+Cflags: -I${includedir}
+Libs: -L${libdir} -lwebpdecoder
+Libs.private: -lm