Makefile.mingw corrections and made the code pass much stricter checks (now mandated by Makefile.mignw) to ensure GCC 14 readiness.

src/win/Makefile.mingw

@@ -177,7 +177,7 @@ ifndef FAUDIO
  FAUDIO := n
 endif
 ifndef OPENAL
- OPENAL := n
+ OPENAL := y
 endif
 ifndef FLUIDSYNTH
  FLUIDSYNTH := y
@@ -519,6 +519,9 @@ CFLAGS := $(CFLAGS)  `pkg-config --cflags freetype2`
 
 CXXFLAGS := $(CFLAGS)
 
+CFLAGS += -Werror=implicit-int -Werror=implicit-function-declaration \
+          -Werror=int-conversion -Werror=strict-prototypes -Werror=old-style-definition
+
 
 #########################################################################
 #             Create the (final) list of objects to build.              #
@@ -669,15 +672,15 @@ SNDOBJ := sound.o \
           snd_lpt_dac.o snd_lpt_dss.o \
           snd_adlib.o snd_adlibgold.o snd_ad1848.o snd_audiopci.o \
           snd_ac97_codec.o snd_ac97_via.o \
-          snd_azt2316a.o snd_cs423x.o snd_cmi8x38.o \
+          snd_azt2316a.o snd_cs423x.o \
+          snd_optimc.o snd_cmi8x38.o \
           snd_cms.o \
           snd_gus.o \
           snd_sb.o snd_sb_dsp.o \
           snd_emu8k.o snd_mpu401.o \
           snd_sn76489.o snd_ssi2001.o \
           snd_wss.o \
-          snd_ym7128.o \
-          snd_optimc.o
+          snd_ym7128.o
 
 VIDOBJ := agpgart.o video.o \
           vid_table.o \

src/win/win.c

@@ -883,7 +883,7 @@ plat_mmap(size_t size, uint8_t executable)
 }
 
 void
-plat_init_rom_paths()
+plat_init_rom_paths(void)
 {
     wchar_t appdata_dir[1024] = { L'\0' };
 

src/win/win_icon.c

@@ -32,7 +32,7 @@ HICON hIcon[256];         /* icon data loaded from resources */
 char  icon_set[256] = ""; /* name of the iconset to be used */
 
 void
-win_clear_icon_set()
+win_clear_icon_set(void)
 {
     int i;
 
@@ -44,7 +44,7 @@ win_clear_icon_set()
 }
 
 void
-win_system_icon_set()
+win_system_icon_set(void)
 {
     int i, x = win_get_system_metrics(SM_CXSMICON, dpi), y = win_get_system_metrics(SM_CYSMICON, dpi);
 
@@ -125,7 +125,7 @@ win_get_icons_path(char *path_root)
 }
 
 void
-win_load_icon_set()
+win_load_icon_set(void)
 {
     win_clear_icon_set();
     win_system_icon_set();

src/win/win_joystick_rawinput.c

@@ -246,7 +246,7 @@ joystick_get_device_name(raw_joystick_t *rawjoy, plat_joystick_t *joy, PRID_DEVI
 }
 
 void
-joystick_init()
+joystick_init(void)
 {
     UINT size = 0;
     atexit(joystick_close);
@@ -316,7 +316,7 @@ end_loop:
 }
 
 void
-joystick_close()
+joystick_close(void)
 {
     RAWINPUTDEVICE ridev[2];
     ridev[0].dwFlags     = RIDEV_REMOVE;

src/win/win_media_menu.c

@@ -350,7 +350,7 @@ media_menu_update_mo(int id)
 }
 
 static void
-media_menu_load_submenus()
+media_menu_load_submenus(void)
 {
     memset(index_map, -1, sizeof(index_map));
 
@@ -428,7 +428,7 @@ is_valid_mo(int i)
 }
 
 void
-media_menu_reset()
+media_menu_reset(void)
 {
     /* Remove existing entries. */
     int c = GetMenuItemCount(media_menu);
@@ -488,7 +488,7 @@ media_menu_reset()
 
 /* Initializes the Media menu in the main menu bar. */
 static void
-media_menu_main_init()
+media_menu_main_init(void)
 {
     HMENU  hMenu;
     LPWSTR lpMenuName;
@@ -510,7 +510,7 @@ media_menu_main_init()
 }
 
 void
-media_menu_init()
+media_menu_init(void)
 {
     /* Initialize the main menu bar menu */
     media_menu_main_init();

src/win/win_opengl.c

@@ -438,7 +438,7 @@ render_and_swap(gl_identifiers *gl)
  * Keeps the thread sleeping until closing.
  */
 static void
-opengl_fail()
+opengl_fail(void)
 {
     if (window != NULL) {
         SDL_DestroyWindow(window);

src/win/win_opengl_glslp.c

@@ -240,7 +240,7 @@ load_custom_shaders(const char *path)
  * @return Shader program identifier.
  */
 GLuint
-load_default_shaders()
+load_default_shaders(void)
 {
     GLuint vertex_id   = glCreateShader(GL_VERTEX_SHADER);
     GLuint fragment_id = glCreateShader(GL_FRAGMENT_SHADER);

src/win/win_settings.c

@@ -230,7 +230,7 @@ settings_listview_select(HWND hdlg, int id, int selection)
 }
 
 static void
-settings_process_messages()
+settings_process_messages(void)
 {
     MSG msg;
     while (PeekMessage(&msg, 0, 0, 0, PM_REMOVE | PM_NOYIELD)) {
@@ -1963,7 +1963,7 @@ win_settings_network_proc(HWND hdlg, UINT message, WPARAM wParam, LPARAM lParam)
 }
 
 static void
-normalize_hd_list()
+normalize_hd_list(void)
 {
     hard_disk_t ihdd[HDD_NUM];
     int         i, j;

src/win/win_stbar.c

@@ -995,7 +995,7 @@ StatusBarCreate(HWND hwndParent, uintptr_t idStatus, HINSTANCE hInst)
 }
 
 void
-ui_sb_update_text()
+ui_sb_update_text(void)
 {
     uint8_t part = 0xff;
 

src/win/win_toolbar.c

@@ -28,7 +28,7 @@ enum image_index {
 };
 
 void
-ToolBarLoadIcons()
+ToolBarLoadIcons(void)
 {
     if (!hwndToolbar)
         return;

src/win/win_ui.c

@@ -200,7 +200,7 @@ static int   menu_vidapi = -1;
 static HMENU cur_menu    = NULL;
 
 static void
-show_render_options_menu()
+show_render_options_menu(void)
 {
     if (vid_api == menu_vidapi)
         return;