Add requires to pkgconfig file

CMakeLists.txt

@@ -226,6 +226,34 @@ configure_file( config.h.cmake config.h @ONLY )
 
 ##### write pkgconfig file ######################
 
+set( PC_LIB_REQUIRE "" )
+if( WITH_ALSA )
+  list( APPEND PC_LIB_REQUIRE "alsa" )
+endif( WITH_ALSA )
+if( WITH_AUDIOFILE )
+  list( APPEND PC_LIB_REQUIRE "audiofile" )
+endif( WITH_AUDIOFILE )
+if( WITH_VORBIS )
+  list( APPEND PC_LIB_REQUIRE "vorbis" )
+  list( APPEND PC_LIB_REQUIRE "vorbisfile" )
+endif( WITH_VORBIS )
+if( WITH_MAD )
+  list( APPEND PC_LIB_REQUIRE "mad" )
+endif( WITH_MAD )
+if( WITH_ESOUND )
+  list( APPEND PC_LIB_REQUIRE "esound" )
+endif( WITH_ESOUND )
+if( WITH_JACK )
+  list( APPEND PC_LIB_REQUIRE "jack" )
+endif( WITH_JACK )
+
+list( LENGTH PC_LIB_REQUIRE PC_LIB_REQUIRES_FOUND )
+if( PC_LIB_REQUIRES_FOUND GREATER 0 )
+  string( REPLACE ";" " " PC_LIB_REQUIRES "Requires: ${PC_LIB_REQUIRE}" )
+else( )
+  set( PC_LIB_REQUIRES "" )
+endif( )
+
 string( REGEX REPLACE "^${CMAKE_INSTALL_PREFIX}" "\${prefix}" PC_EXEC_PREFIX ${EXEC_INSTALL_PREFIX} )
 string( REGEX REPLACE "^${CMAKE_INSTALL_PREFIX}" "\${prefix}" PC_INCLUDE_DIR ${INCLUDE_INSTALL_DIR} )
 string( REGEX REPLACE "^${CMAKE_INSTALL_PREFIX}" "\${prefix}" PC_LIB_DIR ${LIB_INSTALL_DIR} )

arts.pc.cmake

@@ -8,3 +8,4 @@ Description: Soundserver for the Trinity Desktop Environment (TDE)
 Version: @ARTS_VERSION@
 Libs: -L${libdir}
 Cflags: -I${includedir}
+@PC_LIB_REQUIRES@