Add libpng to the main CMakeLists.txt.

CMakeLists.txt

@@ -10,6 +10,9 @@ project(ldep)
 set(DEP_ZLIB_VER "1.2.8")
 set(DEP_PHYSFS_VER "2.0.3")
 set(DEP_LUA51_VER "5.1.5")
+set(DEP_LIBPNG_VER "166")
+
+set(SKIP_INSTALL_ALL TRUE)
 
 set(ZLIB_FOUND TRUE)
 set(ZLIB_LIBRARY zlibstatic)
@@ -18,6 +21,7 @@ set(ZLIB_INCLUDE_DIR .)
 add_subdirectory("libs/zlib-${DEP_ZLIB_VER}" ${CMAKE_BINARY_DIR}/zlib)
 add_subdirectory("libs/physfs-${DEP_PHYSFS_VER}" ${CMAKE_BINARY_DIR}/physfs)
 add_subdirectory("libs/lua-${DEP_LUA51_VER}" ${CMAKE_BINARY_DIR}/lua51)
+add_subdirectory("libs/lpng${DEP_LIBPNG_VER}" ${CMAKE_BINARY_DIR}/lpng)
 
 add_executable(ldeptest src/test.cpp)
-target_link_libraries(ldeptest zlibstatic physfs-static lua51-static)
+target_link_libraries(ldeptest zlibstatic physfs-static lua51-static ${PNG_LIB_NAME_STATIC})

src/test.cpp

@@ -6,6 +6,7 @@
 
 #include <zlib.h>
 #include <physfs.h>
+#include <png.h>
 
 extern "C" {
 #	include "lua.h"
@@ -55,10 +56,18 @@ int main(int argc, const char **argv)
 		return "Lua";
 	};
 
+	vfunc png = [](strs &c, strs &l)
+	{
+		c << PNG_LIBPNG_VER_STRING;
+		l << png_libpng_ver;
+		return "libpng";
+	};
+
 	std::vector<vfunc> funcs;
 	funcs.push_back(zlib);
 	funcs.push_back(physfs);
 	funcs.push_back(lua);
+	funcs.push_back(png);
 
 	for (size_t i = 0; i < funcs.size(); ++i)
 	{