Squelch warnings, turn on -Werror

CMakeLists.txt

@@ -1,6 +1,7 @@
 cmake_minimum_required(VERSION 2.6)
 project(GBAc)
-set(CMAKE_C_FLAGS_DEBUG "-g -Wall -Wextra")
+set(CMAKE_C_FLAGS_DEBUG "-g -Wall -Wextra -Wno-unused -Werror")
+set(CMAKE_C_FLAGS_RELEASE "-O3 -Wall -Wextra -Wno-unused -Werror")
 file(GLOB ARM_SRC ${CMAKE_SOURCE_DIR}/src/arm/*.c)
 file(GLOB GBA_SRC ${CMAKE_SOURCE_DIR}/src/gba/*.c)
 file(GLOB RENDERER_SRC ${CMAKE_SOURCE_DIR}/src/gba/renderers/*.c)

src/gba/gba.c

@@ -351,6 +351,7 @@ int GBAHalt(struct GBA* gba) {
 }
 
 void GBALog(int level, const char* format, ...) {
+	(void)(level);
 	va_list args;
 	va_start(args, format);
 	vprintf(format, args);

src/main.c

@@ -37,6 +37,8 @@ static const GLint _glTexCoords[] = {
 };
 
 int main(int argc, char** argv) {
+	(void)(argc);
+	(void)(argv);
 	int fd = open("test.rom", O_RDONLY);
 
 	sigset_t signals;