build: generate sjpeg.pc pkg-config file for sjpeg

Author: Harry Kunz

CMakeLists.txt

@@ -229,6 +229,15 @@ install(
   DESTINATION ${ConfigPackageLocation}
 )
 
+# Generate pkg-config file
+configure_file(
+  "${CMAKE_CURRENT_SOURCE_DIR}/cmake/sjpeg.pc.in"
+  "${CMAKE_CURRENT_BINARY_DIR}/sjpeg.pc"
+  @ONLY
+)
+
+install(FILES "${CMAKE_CURRENT_BINARY_DIR}/sjpeg.pc"
+  DESTINATION lib/pkgconfig)
 
 ################################################################################
 # Man page.

cmake/sjpeg.pc.in

@@ -0,0 +1,17 @@
+prefix=@CMAKE_INSTALL_PREFIX@
+exec_prefix=${prefix}
+libdir=${exec_prefix}/lib
+includedir=${exec_prefix}/include
+
+Name: sjpeg
+Description: Lightweight JPEG encoder with simple C API and optional C++ interface
+Version: @PROJECT_VERSION@
+
+Requires: libjpeg libpng
+Requires.private:
+
+Libs: -L${libdir} -lsjpeg -ljpeg -lpng
+Libs.private:
+
+Cflags: -I${includedir}
+Cflags.private: