add pkg-config support to cmake

CHANGES

@@ -5,6 +5,9 @@ What's New for OpenJPEG
 ! : changed
 + : added
 
+January 13, 2001
++ [rdieter] add pkg-config support to cmake
+
 January 9, 2011 
 - [antonin] removed forgotten debug info in imagetopnm().
 

CMakeLists.txt

@@ -143,6 +143,13 @@ CONFIGURE_FILE(${CMAKE_CURRENT_SOURCE_DIR}/openjpeg_mangle.h.in
                @ONLY IMMEDIATE)
 ENDIF(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/openjpeg_mangle.h.in)
 
+#-----------------------------------------------------------------------------
+# pkgconfig support
+CONFIGURE_FILE(${CMAKE_CURRENT_SOURCE_DIR}/libopenjpeg1.pc.cmake ${CMAKE_CURRENT_BINARY_DIR}/libopenjpeg1.pc )
+INSTALL( FILES  ${CMAKE_CURRENT_BINARY_DIR}/libopenjpeg1.pc DESTINATION ${OPENJPEG_INSTALL_LIB_DIR}/pkgconfig )
+INSTALL( CODE
+  "EXECUTE_PROCESS(COMMAND ${CMAKE_COMMAND} -E create_symlink \"libopenjpeg1.pc\" \"\$ENV{DESTDIR}${OPENJPEG_INSTALL_LIB_DIR}/pkgconfig/libopenjpeg.pc\")")
+
 #-----------------------------------------------------------------------------
 # Always build the library
 INCLUDE_DIRECTORIES(BEFORE ${CMAKE_CURRENT_BINARY_DIR})

libopenjpeg1.pc.cmake

@@ -0,0 +1,12 @@
+prefix=${CMAKE_INSTALL_PREFIX}
+bindir=${OPENJPEG_INSTALL_BIN_DIR}
+datadir=${OPENJPEG_INSTALL_DATA_DIR}
+libdir=${OPENJPEG_INSTALL_LIB_DIR}
+includedir=${OPENJPEG_INSTALL_INCLUDE_DIR}
+
+Name: openjpeg
+Description: JPEG2000 files library
+URL: http://www.openjpeg.org/ 
+Version: ${OPENJPEG_VERSION} 
+Libs: -L${libdir} -lopenjpeg
+Cflags: -I${includedir}