Fix lodepng load

Author: klsruan

dependencies/CMakeLists.txt

@@ -19,9 +19,9 @@ if (NOT UNIX)
 endif (UNIX)
 
 # lodepng
-project(lodepng_wrap LANGUAGES CXX)
+project(lodepng_wrap LANGUAGES C)
 
-set(LODEPNG_SRC subprojects/lodepng/lodepng.cpp)
+set(LODEPNG_SRC subprojects/lodepng/lodepng.c)
 set(CMAKE_INSTALL_LIBDIR ${CMAKE_SOURCE_DIR}/lodepng_build)
 
 add_library(lodepng_wrap SHARED ${LODEPNG_SRC})

dependencies/build.sh

@@ -19,6 +19,7 @@ git checkout 784ff113071f1fa7832ebe74667f2fd0756c634f
 
 git clone https://github.com/lvandeve/lodepng.git $sub/lodepng && cd $sub/lodepng
 git checkout 997936fd2b45842031e4180d73d7880e381cf33f
+cp -f $sub/lodepng/lodepng.cpp $sub/lodepng/lodepng.c
 
 git clone https://github.com/rcancro/giflib.git $sub/giflib && cd $sub/giflib
 git checkout 4b0c893cfddf16421bd3f59207fdf65f06e9a10d