package sdl_image: Fix #367

src/cmake/FindFreetype.cmake

@@ -1,4 +1,6 @@
-find_package(PkgConfig REQUIRED)
+if(NOT PKG_CONFIG_FOUND)
+  find_package(PkgConfig REQUIRED)
+endif()
 
 pkg_check_modules(FREETYPE freetype2)
 

src/cmake/FindSDL.cmake

@@ -0,0 +1,12 @@
+if(NOT PKG_CONFIG_FOUND)
+  find_package(PkgConfig REQUIRED)
+endif()
+
+pkg_check_modules(SDL sdl)
+
+# for backward compatiblity
+set(SDL_LIBRARY ${SDL_LIBRARIES})
+set(SDL_INCLUDE_DIR ${SDL_INCLUDE_DIRS})
+set(SDL_VERSION_STRING ${SDL_VERSION})
+
+#message(FATAL_ERROR "SDL_VERSION_STRING ${SDL_VERSION_STRING}")

src/cmake/FindSDL_image.cmake

@@ -0,0 +1,11 @@
+if(NOT PKG_CONFIG_FOUND)
+  find_package(PkgConfig REQUIRED)
+endif()
+
+pkg_check_modules(SDL_IMAGE SDL_image)
+
+# for backward compatiblity
+set(SDLIMAGE_LIBRARY ${SDL_IMAGE_LIBRARIES})
+set(SDL_IMAGE_LIBRARY ${SDL_IMAGE_LIBRARIES})
+set(SDLIMAGE_INCLUDE_DIR ${SDL_IMAGE_INCLUDE_DIRS})
+set(SDLIMAGE_FOUND ${SDL_IMAGE_FOUND})