#545 CI changes

Makefile

@@ -40,15 +40,14 @@ GTK_INCLUDES= `pkg-config --cflags gtk+-3.0`
 GTK_LIBS= `pkg-config --libs gtk+-3.0`
 
 LINUX_INCLUDES= \
-	$(GTK_INCLUDES) \
+	$(GTK_INCLUDES)
-	`sdl2-config --cflags`
 
 LINUX_LIBS= \
 	$(GTK_LIBS) \
-	`sdl2-config --static-libs` \
 	-L$(3RD_PARTY)/wren-0.1.0/lib \
 	-L$(3RD_PARTY)/sdl-gpu/build/linux \
-	-L$(3RD_PARTY)/lua-5.3.1/src
+	-L$(3RD_PARTY)/lua-5.3.1/src \
+	-L$(3RD_PARTY)/SDL2-2.0.7/build/.libs
 
 LINUX64_LIBS= \
 	$(GTK_LIBS) \
@@ -83,7 +82,9 @@ LINUX_LINKER_FLAGS= \
 	-lrt \
 	-lz \
 	-lsdlgpu \
-	-lGL
+	-lGL \
+	-lSDL2
+
 
 MINGW_OUTPUT=$(BIN_NAME).exe
 
@@ -366,6 +367,7 @@ chip-lto-pro:
 WREN_A=$(3RD_PARTY)/wren-0.1.0/lib/libwren.a
 SDLGPU_A=$(3RD_PARTY)/sdl-gpu/build/linux/libsdlgpu.a
 LUA_A=$(3RD_PARTY)/lua-5.3.1/src/liblua.a
+SDL2_A=$(3RD_PARTY)/SDL2-2.0.7/build/.libs/libSDL2.a
 
 $(WREN_A):
 	make static -C $(3RD_PARTY)/wren-0.1.0/
@@ -376,7 +378,10 @@ $(SDLGPU_A):
 $(LUA_A):
 	make linux -C $(3RD_PARTY)/lua-5.3.1/
 
-linux: $(WREN_A) $(SDLGPU_A) $(LUA_A)
+$(SDL2_A):
+	cd $(3RD_PARTY)/SDL2-2.0.7/ && ./configure && make && cd ../..
+
+linux: $(WREN_A) $(SDLGPU_A) $(LUA_A) $(SDL2_A)
 	$(CC) $(LINUX_INCLUDES) $(SOURCES) $(SYSTEM) $(LPEG_SRC) $(GIF_SRC) $(SOURCES_EXT) $(TIC80_SRC) $(OPT) $(INCLUDES) $(LINUX_LIBS) $(LINUX_LINKER_FLAGS) -o $(BIN_NAME)
 
 linux-pro: