Change cmake

S-Rey · S-Rey · commit 959dc37c1ffb · 2017-11-02T15:15:46.000+01:00
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -2,15 +2,22 @@ cmake_minimum_required(VERSION 3.7)
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 project(pixelsort)
 
-find_package(PNG REQUIRED)
-include_directories(${PNG_INCLUDE_DIR})
-
-set(CMAKE_CXX_STANDARD 11)
+include (FindPkgConfig)
+if (NOT PKG_CONFIG_FOUND)
+    message (FATAL_ERROR "pkg-config not found")
+endif ()
 
+pkg_check_modules (LIBPNG libpng16 REQUIRED)
+if (NOT LIBPNG_FOUND)
+    message(FATAL_ERROR "You don't seem to have libpng16 development libraries installed")
+else ()
+    include_directories (${LIBPNG_INCLUDE_DIRS})
+    link_directories (${LIBPNG_LIBRARY_DIRS})
+    link_libraries (${LIBPNG_LIBRARIES})
+endif ()
 
 set(SOURCE_FILES
         src/main.c
         src/read_write.h)
 
-add_executable(pixelsort ${SOURCE_FILES})
-target_link_libraries(pixelsort ${PNG_LIBRARY})
+add_executable(pixelsort ${SOURCE_FILES} ${LIBPNG_LINK_FLAGS})
diff --git a/src/main.c b/src/main.c
@@ -99,3 +99,4 @@ int main(int argc, char **argv)
 
     return 0;
 }
+
diff --git a/src/read_write.h b/src/read_write.h
@@ -3,7 +3,7 @@
 
 #include <stdlib.h>
 #include <stdio.h>
-#include "png.h"
+#include <png.h>
 
 int width, height;
 png_byte color_type;
