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

src/include/86box/86box.h

@@ -162,7 +162,7 @@ extern void set_screen_size_monitor(int x, int y, int monitor_index);
 extern void reset_screen_size(void);
 extern void reset_screen_size_monitor(int monitor_index);
 extern void set_screen_size_natural(void);
-extern void update_mouse_msg();
+extern void update_mouse_msg(void);
 #if 0
 extern void	pc_reload(wchar_t *fn);
 #endif

src/include/86box/discord.h

@@ -23,11 +23,11 @@ extern "C" {
 
 extern int discord_loaded;
 
-extern int  discord_load();
-extern void discord_init();
-extern void discord_close();
+extern int  discord_load(void);
+extern void discord_init(void);
+extern void discord_close(void);
 extern void discord_update_activity(int paused);
-extern void discord_run_callbacks();
+extern void discord_run_callbacks(void);
 
 #ifdef __cplusplus
 }

src/include/86box/hdd.h

@@ -213,7 +213,7 @@ extern int image_is_vhd(const char *s, int check_signature);
 extern double      hdd_timing_write(hard_disk_t *hdd, uint32_t addr, uint32_t len);
 extern double      hdd_timing_read(hard_disk_t *hdd, uint32_t addr, uint32_t len);
 extern double      hdd_seek_get_time(hard_disk_t *hdd, uint32_t dst_addr, uint8_t operation, uint8_t continuous, double max_seek_time);
-int                hdd_preset_get_num();
+int                hdd_preset_get_num(void);
 const char        *hdd_preset_getname(int preset);
 extern const char *hdd_preset_get_internal_name(int preset);
 extern int         hdd_preset_get_from_internal_name(char *s);

src/include/86box/hwm.h

@@ -38,7 +38,7 @@ typedef struct {
 } lm75_t;
 
 /* hwm.c */
-extern uint16_t hwm_get_vcore();
+extern uint16_t hwm_get_vcore(void);
 
 /* hwm_lm75.c */
 extern void    lm75_remap(lm75_t *dev, uint8_t addr);

src/include/86box/i2c.h

@@ -62,6 +62,6 @@ extern void    i2c_gpio_close(void *dev_handle);
 extern void    i2c_gpio_set(void *dev_handle, uint8_t scl, uint8_t sda);
 extern uint8_t i2c_gpio_get_scl(void *dev_handle);
 extern uint8_t i2c_gpio_get_sda(void *dev_handle);
-extern void   *i2c_gpio_get_bus();
+extern void   *i2c_gpio_get_bus(void *dev_handle);
 
 #endif /*EMU_I2C_H*/

src/include/86box/i8080.h

@@ -43,10 +43,10 @@ typedef struct i8080
     uint16_t* cpu_flags;
     void (*writemembyte)(uint32_t, uint8_t);
     uint8_t (*readmembyte)(uint32_t);
-    void (*startclock)();
-    void (*endclock)();
-    void (*checkinterrupts)();
-    uint8_t (*fetchinstruction)();
+    void (*startclock)(void);
+    void (*endclock)(void);
+    void (*checkinterrupts)(void);
+    uint8_t (*fetchinstruction)(void *);
 } i8080;
 
 #define C_FLAG_I8080 (1 << 0)

src/include/86box/m_xt_xi8088.h

@@ -5,9 +5,9 @@
 
 extern const device_t xi8088_device;
 
-uint8_t xi8088_turbo_get();
+uint8_t xi8088_turbo_get(void);
 void    xi8088_turbo_set(uint8_t value);
 void    xi8088_bios_128kb_set(int val);
-int     xi8088_bios_128kb();
+int     xi8088_bios_128kb(void);
 
 #endif /*MACHINE_XI80888_H*/

src/include/86box/machine_status.h

@@ -27,6 +27,6 @@ typedef struct {
 
 extern machine_status_t machine_status;
 
-extern void machine_status_init();
+extern void machine_status_init(void);
 
 #endif /*EMU_MACHINE_STATUS_H*/

src/include/86box/midi.h

@@ -25,13 +25,13 @@ extern char *midi_out_device_get_internal_name(int card);
 extern char *midi_in_device_get_internal_name(int card);
 extern int   midi_out_device_get_from_internal_name(char *s);
 extern int   midi_in_device_get_from_internal_name(char *s);
-extern void  midi_out_device_init();
-extern void  midi_in_device_init();
+extern void  midi_out_device_init(void);
+extern void  midi_in_device_init(void);
 
 typedef struct midi_device_t {
     void (*play_sysex)(uint8_t *sysex, unsigned int len);
     void (*play_msg)(uint8_t *msg);
-    void (*poll)();
+    void (*poll)(void);
     int (*write)(uint8_t val);
 } midi_device_t;
 
@@ -60,13 +60,13 @@ extern midi_t *midi_out, *midi_in;
 
 extern void midi_out_init(midi_device_t *device);
 extern void midi_in_init(midi_device_t *device, midi_t **mididev);
-extern void midi_out_close();
+extern void midi_out_close(void);
 extern void midi_in_close(void);
 extern void midi_raw_out_rt_byte(uint8_t val);
 extern void midi_raw_out_thru_rt_byte(uint8_t val);
 extern void midi_raw_out_byte(uint8_t val);
 extern void midi_clear_buffer(void);
-extern void midi_poll();
+extern void midi_poll(void);
 
 extern void midi_in_handler(int set, void (*msg)(void *p, uint8_t *msg, uint32_t len), int (*sysex)(void *p, uint8_t *buffer, uint32_t len, int abort), void *p);
 extern void midi_in_handlers_clear(void);

src/include/86box/mo.h

@@ -168,7 +168,7 @@ extern void mo_hard_reset(void);
 
 extern void mo_reset(scsi_common_t *sc);
 extern int  mo_load(mo_t *dev, char *fn);
-extern void mo_close();
+extern void mo_close(void);
 
 #ifdef __cplusplus
 }

src/include/86box/nvr.h

@@ -111,7 +111,7 @@ extern int   nvr_save(void);
 
 extern int  nvr_is_leap(int year);
 extern int  nvr_get_days(int month, int year);
-extern void nvr_time_sync();
+extern void nvr_time_sync(void);
 extern void nvr_time_get(struct tm *);
 extern void nvr_time_set(struct tm *);
 

src/include/86box/pci.h

@@ -113,7 +113,7 @@ extern uint8_t pci_get_int(uint8_t card, uint8_t pci_int);
 
 extern void    pci_reset(void);
 extern void    pci_init(int type);
-extern uint8_t pci_register_bus();
+extern uint8_t pci_register_bus(void);
 extern void    pci_set_pmc(uint8_t pmc);
 extern void    pci_remap_bus(uint8_t bus_index, uint8_t bus_number);
 extern void    pci_relocate_slot(int type, int new_slot);

src/include/86box/plat.h

@@ -106,7 +106,7 @@ extern int      plat_getcwd(char *bufp, int max);
 extern int      plat_chdir(char *path);
 extern void     plat_tempfile(char *bufp, char *prefix, char *suffix);
 extern void     plat_get_exe_name(char *s, int size);
-extern void     plat_init_rom_paths();
+extern void     plat_init_rom_paths(void);
 extern int      plat_dir_check(char *path);
 extern int      plat_dir_create(char *path);
 extern void    *plat_mmap(size_t size, uint8_t executable);

src/include/86box/snd_resid.h

@@ -4,7 +4,7 @@
 #ifdef __cplusplus
 extern "C" {
 #endif
-void   *sid_init();
+void   *sid_init(void);
 void    sid_close(void *p);
 void    sid_reset(void *p);
 uint8_t sid_read(uint16_t addr, void *p);

src/include/86box/snd_speaker.h

@@ -25,7 +25,7 @@ extern int speaker_mute;
 extern int speaker_gated;
 extern int speaker_enable, was_speaker_enable;
 
-extern void speaker_init();
+extern void speaker_init(void);
 
 extern void speaker_set_count(uint8_t new_m, int new_count);
 extern void speaker_update(void);

src/include/86box/vid_nga.h

@@ -42,7 +42,7 @@ void    nga_write(uint32_t addr, uint8_t val, void *priv);
 uint8_t nga_read(uint32_t addr, void *priv);
 void    nga_poll(void *priv);
 void    nga_close(void *priv);
-void    nga_mdaattr_rebuild();
+void    nga_mdaattr_rebuild(void);
 
 #ifdef EMU_DEVICE_H
 extern const device_config_t nga_config[];

src/include/86box/vid_ogc.h

@@ -42,7 +42,7 @@ void    ogc_write(uint32_t addr, uint8_t val, void *priv);
 uint8_t ogc_read(uint32_t addr, void *priv);
 void    ogc_poll(void *priv);
 void    ogc_close(void *priv);
-void    ogc_mdaattr_rebuild();
+void    ogc_mdaattr_rebuild(void);
 
 #ifdef EMU_DEVICE_H
 extern const device_config_t ogc_config[];

src/include/86box/vid_svga.h

@@ -211,7 +211,7 @@ extern uint8_t svga_rotate[8][256];
 void    svga_out(uint16_t addr, uint8_t val, void *p);
 uint8_t svga_in(uint16_t addr, void *p);
 
-svga_t *svga_get_pri();
+svga_t *svga_get_pri(void);
 void    svga_set_override(svga_t *svga, int val);
 
 void svga_set_ramdac_type(svga_t *svga, int type);

src/include/86box/win.h

@@ -148,9 +148,9 @@ extern int  win_get_system_metrics(int i, int dpi);
 
 extern LPARAM win_get_string(int id);
 
-extern void win_clear_icon_set();
-extern void win_system_icon_set();
-extern void win_load_icon_set();
+extern void win_clear_icon_set(void);
+extern void win_system_icon_set(void);
+extern void win_load_icon_set(void);
 extern void win_get_icons_path(char *path_root);
 
 extern intptr_t fdd_type_to_icon(int type);
@@ -209,7 +209,7 @@ extern int  MediaMenuHandler(HWND hwnd, UINT message, WPARAM wParam, LPARAM lPar
 /* Functions in win_toolbar.c */
 extern HWND hwndRebar;
 extern void ToolBarCreate(HWND hwndParent, HINSTANCE hInst);
-extern void ToolBarLoadIcons();
+extern void ToolBarLoadIcons(void);
 extern void ToolBarUpdatePause(int paused);
 
 /* Functions in win_dialog.c: */
@@ -223,8 +223,8 @@ extern int file_dlg_st(HWND hwnd, int i, char *fn, char *title, int save);
 extern wchar_t *BrowseFolder(wchar_t *saved_path, wchar_t *title);
 
 /* Functions in win_media_menu.c */
-extern void  media_menu_init();
-extern void  media_menu_reset();
+extern void  media_menu_init(void);
+extern void  media_menu_reset(void);
 extern int   media_menu_proc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);
 extern HMENU media_menu_get_cassette(void);
 extern HMENU media_menu_get_cartridge(int id);
@@ -241,7 +241,7 @@ extern void  media_menu_update_mo(int id);
 
 /* Functions in win_ui.c */
 extern HMENU menuMain;
-extern void  ResetAllMenus();
+extern void  ResetAllMenus(void);
 
 #ifdef __cplusplus
 }

src/include/86box/win_opengl_glslp.h

@@ -19,6 +19,6 @@
 #include <glad/glad.h>
 
 GLuint load_custom_shaders(const char *path);
-GLuint load_default_shaders();
+GLuint load_default_shaders(void);
 
 #endif /*!WIN_OPENGL_GLSLP_H*/

src/include/86box/zip.h

@@ -113,7 +113,7 @@ extern void zip_hard_reset(void);
 
 extern void zip_reset(scsi_common_t *sc);
 extern int  zip_load(zip_t *dev, char *fn);
-extern void zip_close();
+extern void zip_close(void);
 
 #ifdef __cplusplus
 }