diff --git a/Makefile b/Makefile
index 4552cc1d..7868ba6f 100644
--- a/Makefile
+++ b/Makefile
@@ -514,7 +514,7 @@ ifeq ($(WINDOWS_BUILD),1) # fixes compilation in MXE on Linux and WSL
   OBJCOPY := objcopy
   OBJDUMP := $(CROSS)objdump
 else ifeq ($(OSX_BUILD),1)
-  CPP := cpp-12 -P
+  CPP := cpp-14 -P
   OBJDUMP := i686-w64-mingw32-objdump
   OBJCOPY := i686-w64-mingw32-objcopy
 else # Linux & other builds
diff --git a/src/pc/gfx/gfx_opengl.c b/src/pc/gfx/gfx_opengl.c
index 450b468b..5e5fe122 100644
--- a/src/pc/gfx/gfx_opengl.c
+++ b/src/pc/gfx/gfx_opengl.c
@@ -537,7 +537,7 @@ static void gfx_opengl_select_texture(int tile, GLuint texture_id) {
      gfx_opengl_set_texture_uniforms(opengl_prg, tile);
 }
 
-static void gfx_opengl_upload_texture(uint8_t *rgba32_buf, int width, int height) {
+static void gfx_opengl_upload_texture(const uint8_t *rgba32_buf, int width, int height) {
     glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, rgba32_buf);
     opengl_tex[opengl_curtex]->size[0] = width;
     opengl_tex[opengl_curtex]->size[1] = height;