Add extern "C" in C++ to all headers

src/am_map.h

@@ -16,6 +16,10 @@
 
 #include "d_event.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 struct fpoint_t
 {
 	INT32 x, y;
@@ -44,4 +48,8 @@ void AM_Start(void);
 // Called to force the automap to quit if the level is completed while it is up.
 void AM_Stop(void);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/android/i_video.h

@@ -3,10 +3,18 @@
 
 #include <jni.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 UINT8 *android_surface;
 
 JNIEnv* jni_env;
 jobject androidVideo;
 jmethodID videoFrameCB;
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/apng.h

@@ -39,6 +39,10 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <png.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef struct apng_info_def apng_info;
 typedef apng_info * apng_infop;
 typedef const apng_info * apng_const_infop;
@@ -77,4 +81,8 @@ void apng_set_write_fn (png_structp png_ptr, apng_infop ainfo_ptr,
 void apng_set_set_acTL_fn (png_structp png_ptr, apng_infop ainfo_ptr,
 		apng_set_acTL_ptr set_acTL_fn);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif/* APNG_H */

src/byteptr.h

@@ -11,12 +11,19 @@
 /// \brief Macros to read/write from/to a UINT8 *,
 ///        used for packet creation and such
 
+#ifndef __BYTEPTR_H__
+#define __BYTEPTR_H__
+
 #if defined (__alpha__) || defined (__arm__) || defined (__mips__) || defined (__ia64__) || defined (__clang__)
 #define DEALIGNED
 #endif
 
 #include "endian.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #ifndef SRB2_BIG_ENDIAN
 //
 // Little-endian machines
@@ -214,3 +221,9 @@ FUNCINLINE static ATTRINLINE UINT32 readulong(void *ptr)
 	memcpy(s, p, n);          \
 	p += n;                   \
 } while (0)
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // __BYTEPTR_H__

src/command.h

@@ -16,6 +16,10 @@
 #include <stdio.h>
 #include "doomdef.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 //===================================
 // Command buffer & command execution
 //===================================
@@ -238,4 +242,8 @@ void CV_CheaterWarning(UINT8 playerID, const char *command);
 // Returns cvar by name. Exposed here for Lua.
 consvar_t *CV_FindVar(const char *name);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif // __COMMAND_H__

src/console.h

@@ -10,10 +10,17 @@
 /// \file  console.h
 /// \brief Console drawing and input
 
+#ifndef __CONSOLE_H__
+#define __CONSOLE_H__
+
 #include "d_event.h"
 #include "command.h"
 #include "i_threads.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 void CON_Init(void);
 
 boolean CON_Responder(event_t *ev);
@@ -89,3 +96,9 @@ void CON_LogMessage(const char *msg);
 // Startup loading bar
 void CON_SetLoadingProgress(con_loadprogress_t newStep);
 void CON_DrawLoadBar(void);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // __CONSOLE_H__

src/d_clisrv.h

@@ -23,6 +23,10 @@
 
 #include "k_pwrlv.h" // PWRLV_NUMTYPES
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /*
 The 'packet version' is used to distinguish packet formats.
 This version is independent of VERSION and SUBVERSION. Different
@@ -544,4 +548,8 @@ void CL_ClearRewinds(void);
 rewind_t *CL_SaveRewindPoint(size_t demopos);
 rewind_t *CL_RewindToTime(tic_t time);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/d_event.h

@@ -17,6 +17,10 @@
 #include "doomtype.h"
 #include "g_state.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // Input event types.
 typedef enum
 {
@@ -45,4 +49,8 @@ struct event_t
 extern event_t events[MAXEVENTS];
 extern INT32 eventhead, eventtail;
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/d_main.h

@@ -18,6 +18,10 @@
 #include "d_event.h"
 #include "w_wad.h"   // for MAX_WADFILES
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // make sure not to write back the config until it's been correctly loaded
 extern tic_t rendergametic;
 
@@ -52,4 +56,8 @@ const char *D_Home(void);
 //
 void D_StartTitle(void);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif //__D_MAIN__

src/d_net.h

@@ -18,6 +18,10 @@
 #ifndef __D_NET__
 #define __D_NET__
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // Max computers in a game
 // 127 is probably as high as this can go, because
 // SINT8 is used for nodes sometimes >:(
@@ -64,4 +68,8 @@ void Net_AbortPacketType(UINT8 packettype);
 void Net_SendAcks(INT32 node);
 void Net_WaitAllAckReceived(UINT32 timeout);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/d_netcmd.h

@@ -18,6 +18,10 @@
 #include "command.h"
 #include "d_player.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // console vars
 extern consvar_t cv_playername[MAXSPLITSCREENPLAYERS];
 extern consvar_t cv_playercolor[MAXSPLITSCREENPLAYERS];
@@ -279,4 +283,8 @@ void D_Cheat(INT32 playernum, INT32 cheat, ...);
 UINT8 CanChangeSkin(INT32 playernum);
 boolean CanChangeSkinWhilePlaying(INT32 playernum);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/d_netfil.h

@@ -17,6 +17,10 @@
 #include "d_clisrv.h"
 #include "w_wad.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef enum
 {
 	SF_FILE,
@@ -162,4 +166,8 @@ void CURLGetFile(void);
 HTTP_login * CURLGetLogin (const char *url, HTTP_login ***return_prev_next);
 #endif
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif // __D_NETFIL__

src/d_player.h

@@ -32,6 +32,10 @@
 // the player struct stores a waypoint for racing
 #include "k_waypoint.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // Extra abilities/settings for skins (combinable stuff)
 typedef enum
 {
@@ -657,4 +661,8 @@ struct player_t
 #endif
 };
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/d_think.h

@@ -17,6 +17,10 @@
 #ifndef __D_THINK__
 #define __D_THINK__
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #ifdef __GNUG__
 #pragma interface
 #endif
@@ -51,4 +55,8 @@ struct thinker_t
 	INT32 references;
 };
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/d_ticcmd.h

@@ -17,6 +17,10 @@
 #include "m_fixed.h"
 #include "doomtype.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #ifdef __GNUG__
 #pragma interface
 #endif
@@ -78,4 +82,8 @@ struct ticcmd_t
 #pragma pack()
 #endif
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/deh_lua.h

@@ -13,9 +13,17 @@
 #ifndef __DEH_LUA_H__
 #define __DEH_LUA_H__
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 boolean LUA_SetLuaAction(void *state, const char *actiontocompare);
 const char *LUA_GetActionName(void *action);
 void LUA_SetActionByName(void *state, const char *actiontocompare);
 size_t LUA_GetActionNumByName(const char *actiontocompare);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/deh_soc.h

@@ -45,6 +45,10 @@
 #include "dehacked.h"
 #include "doomdef.h" // HWRENDER
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // Crazy word-reading stuff
 /// \todo Put these in a seperate file or something.
 mobjtype_t get_mobjtype(const char *word);
@@ -87,4 +91,8 @@ void readfollowercategory(MYFILE *f);
 preciptype_t get_precip(const char *word);
 void readweather(MYFILE *f, INT32 num);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/deh_tables.h

@@ -18,6 +18,10 @@
 #include "info.h" // Mobj, state, sprite, etc constants
 #include "lua_script.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // Free slot names
 // The crazy word-reading stuff uses these.
 extern char *FREE_STATES[NUMSTATEFREESLOTS];
@@ -78,4 +82,8 @@ extern struct int_const_s const INT_CONST[];
 // Moved to this file because it can't work compile-time otherwise
 void DEH_TableCheck(void);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/dehacked.h

@@ -15,6 +15,10 @@
 
 #include "m_fixed.h" // for get_number
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef enum
 {
 	UNDO_NONE    = 0x00,
@@ -69,5 +73,8 @@ char *myfgets(char *buf, size_t bufsize, MYFILE *f);
 char *myhashfgets(char *buf, size_t bufsize, MYFILE *f);
 
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
 
 #endif

src/discord.h

@@ -17,6 +17,10 @@
 
 #include <discord_rpc.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 extern consvar_t cv_discordrp;
 extern consvar_t cv_discordstreamer;
 extern consvar_t cv_discordasks;
@@ -77,4 +81,8 @@ void DRPC_UpdatePresence(void);
 
 #endif // HAVE_DISCORDRPC
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif // __DISCORD__

src/doomdata.h

@@ -26,6 +26,10 @@
 #include "taglist.h"
 #include "m_fixed.h" // See the mapthing_t scale.
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 //
 // Map level types.
 // The following data structures define the persistent format
@@ -234,4 +238,8 @@ enum
 	CEILING_SLOPE_THING = 778,
 };
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif // __DOOMDATA__

src/doomdef.h

@@ -97,6 +97,10 @@
 #include <io.h>
 #endif
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 //#define NOMD5
 
 // Uncheck this to compile debugging code
@@ -746,4 +750,8 @@ extern int compuncommitted;
 /// Other karma comeback modes
 //#define OTHERKARMAMODES
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif // __DOOMDEF__

src/doomstat.h

@@ -28,6 +28,10 @@
 // For lumpnum_t.
 #include "w_wad.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // =============================
 // Selected map etc.
 // =============================
@@ -750,4 +754,8 @@ extern INT32 adminplayers[MAXPLAYERS];
 
 /// \note put these in d_clisrv outright?
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif //__DOOMSTAT__

src/f_finale.h

@@ -19,6 +19,10 @@
 #include "d_event.h"
 #include "p_mobj.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 //
 // FINALE
 //
@@ -196,4 +200,8 @@ enum
 
 extern UINT8 wipedefs[NUMWIPEDEFS];
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/fastcmp.h

@@ -1,6 +1,10 @@
 #ifndef __FASTCMP_H__
 #define __FASTCMP_H__
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // returns false if s != c
 // returns true if s == c
 FUNCINLINE static ATTRINLINE boolean fasticmp(const char *s, const char *c)
@@ -24,4 +28,8 @@ FUNCINLINE static ATTRINLINE boolean fastncmp(const char *s, const char *c, UINT
 	return !l; // make sure you reached the end
 }
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/filesrch.h

@@ -8,6 +8,10 @@
 #include "d_netfil.h"
 #include "k_menu.h" // MAXSTRINGLENGTH
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 extern consvar_t cv_addons_option, cv_addons_folder, cv_addons_md5, cv_addons_showall, cv_addons_search_case, cv_addons_search_type;
 
 /**	\brief	The filesearch function
@@ -93,4 +97,8 @@ void closefilemenu(boolean validsize);
 void searchfilemenu(char *tempname);
 boolean preparefilemenu(boolean samedepth, boolean replayhut);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif // __FILESRCH_H__

src/font.h

@@ -13,6 +13,10 @@
 #ifndef __FONT_H__
 #define __FONT_H__
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define MAX_FONTS 32
 
 struct font_t
@@ -44,4 +48,8 @@ Register a new font, but do not load it yet.
 */
 int Font_DumbRegister (const font_t *);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/g_demo.h

@@ -18,6 +18,10 @@
 #include "doomstat.h"
 #include "d_event.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 extern UINT8 *demo_p;
 
 // ======================================
@@ -203,4 +207,8 @@ boolean G_DemoTitleResponder(event_t *ev);
 
 boolean G_CheckDemoTitleEntry(void);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif // __G_DEMO__

src/g_game.h

@@ -20,6 +20,10 @@
 #include "g_demo.h"
 #include "m_cheat.h" // objectplacing
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 extern char gamedatafilename[64];
 extern char timeattackfolder[64];
 extern char customversionstring[32];
@@ -262,4 +266,8 @@ INT16 G_GetFirstMapOfGametype(UINT8 pgametype);
 INT16 G_RandMap(UINT32 tolflags, INT16 pprevmap, UINT8 ignorebuffer, UINT8 maphell, boolean callagainsoon, INT16 *extbuffer);
 void G_AddMapToBuffer(INT16 map);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/g_input.h

@@ -18,6 +18,10 @@
 #include "keys.h"
 #include "command.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // number of total 'button' inputs, include keyboard keys, plus virtual
 // keys (mousebuttons and joybuttons becomes keys)
 #define NUMKEYS 256
@@ -156,4 +160,8 @@ void G_CopyControls(INT32 (*setupcontrols)[MAXINPUTMAPPING], INT32 (*fromcontrol
 void G_SaveKeySetting(FILE *f, INT32 (*fromcontrolsa)[MAXINPUTMAPPING], INT32 (*fromcontrolsb)[MAXINPUTMAPPING], INT32 (*fromcontrolsc)[MAXINPUTMAPPING], INT32 (*fromcontrolsd)[MAXINPUTMAPPING]);
 INT32 G_CheckDoubleUsage(INT32 keynum, INT32 playernum, boolean modify);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/g_state.h

@@ -15,6 +15,10 @@
 
 #include "doomtype.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // the current state of the game
 typedef enum
 {
@@ -58,4 +62,8 @@ extern UINT8 titlemapinaction;
 extern UINT8 ultimatemode; // was sk_insane
 extern gameaction_t gameaction;
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif //__G_STATE__

src/hardware/hw3dsdrv.h

@@ -16,6 +16,10 @@
 #include "hw_dll.h"
 #include "hws_data.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #if defined (HAVE_SDL) || !defined (HWD)
 EXPORT void HWRAPI(Shutdown) (void);
 #endif
@@ -74,4 +78,8 @@ extern struct hardware3ds_s hw3ds_driver;
 
 #endif  // _CREATE_DLL_
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif // __HW_3DS_DRV_H__

src/hardware/hw3sound.h

@@ -17,6 +17,10 @@
 //#include "../s_sound.h"
 //#include "../p_mobj.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // Default sound mode (original stereo mode)
 enum
 {
@@ -95,4 +99,8 @@ void HW3S_FreeSfx(sfxinfo_t *sfx);
 INT32 S_AdjustSoundParams(const mobj_t *listener, const mobj_t *source,
 	INT32 *vol, INT32 *sep, INT32 *pitch, sfxinfo_t *sfxinfo);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif // __HW3_SOUND_H__

src/hardware/hw_batching.h

@@ -16,6 +16,10 @@
 #include "hw_data.h"
 #include "hw_drv.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef struct
 {
 	FSurfaceInfo surf;// surf also has its own polyflags for some reason, but it seems unused
@@ -33,4 +37,8 @@ void HWR_SetCurrentTexture(GLMipmap_t *texture);
 void HWR_ProcessPolygon(FSurfaceInfo *pSurf, FOutVector *pOutVerts, FUINT iNumPts, FBITFIELD PolyFlags, int shader, boolean horizonSpecial);
 void HWR_RenderBatches(void);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/hardware/hw_clip.h

@@ -7,11 +7,18 @@
  *
  */
 
+#ifndef __HARDWARE_HW_CLIP_H__
+#define __HARDWARE_HW_CLIP_H__
+
 // OpenGL BSP clipping
 #include "../doomdef.h"
 #include "../tables.h"
 #include "../doomtype.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 //#define HAVE_SPHEREFRUSTRUM // enable if you want gld_SphereInFrustum and related code
 
 boolean gld_clipper_SafeCheckRange(angle_t startAngle, angle_t endAngle);
@@ -22,3 +29,9 @@ angle_t gld_FrustumAngle(angle_t tiltangle);
 void gld_FrustrumSetup(void);
 boolean gld_SphereInFrustum(float x, float y, float z, float radius);
 #endif
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // __HARDWARE_HW_CLIP_H__

src/hardware/hw_data.h

@@ -22,6 +22,10 @@
 #include "../doomdef.h"
 #include "../screen.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // ==========================================================================
 //                                                               TEXTURE INFO
 // ==========================================================================
@@ -86,4 +90,8 @@ struct GLPatch_s
 };
 typedef struct GLPatch_s GLPatch_t;
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif //_HWR_DATA_

src/hardware/hw_defs.h

@@ -15,6 +15,10 @@
 #include "../doomtype.h"
 #include "../r_defs.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define ZCLIP_PLANE 4.0f // Used for the actual game drawing
 #define NZCLIP_PLANE 0.9f // Seems to be only used for the HUD and screen textures
 
@@ -330,4 +334,8 @@ enum hwdfiltermode
 	HWD_SET_TEXTUREFILTER_MIXED3,
 };
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif //_HWR_DEFS_

src/hardware/hw_dll.h

@@ -12,6 +12,10 @@
 #ifndef __HWR_DLL_H__
 #define __HWR_DLL_H__
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // Function declaration for exports from the DLL :
 // EXPORT <return-type> HWRAPI(<function-name>) (<arguments>);
 // If _CREATE_DLL_ is defined the above declaration translates to :
@@ -56,4 +60,8 @@ void _init();
 void _fini();
 #endif
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/hardware/hw_drv.h

@@ -21,6 +21,10 @@
 
 #include "hw_dll.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // ==========================================================================
 //                                                       STANDARD DLL EXPORTS
 // ==========================================================================
@@ -129,4 +133,8 @@ extern struct hwdriver_s hwdriver;
 
 #endif //not defined _CREATE_DLL_
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif //__HWR_DRV_H__

src/hardware/hw_glob.h

@@ -19,6 +19,10 @@
 #include "../r_defs.h"
 #include "../p_setup.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // the original aspect ratio of Doom graphics isn't square
 #define ORIGINAL_ASPECT (320.0f/200.0f)
 
@@ -143,4 +147,8 @@ void HWR_SetPalette(RGBA_t *palette);
 extern INT32 patchformat;
 extern INT32 textureformat;
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif //_HW_GLOB_

src/hardware/hw_light.h

@@ -16,6 +16,10 @@
 #include "hw_glob.h"
 #include "hw_defs.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define NUMLIGHTFREESLOTS 32 // Free light slots (for SOCs)
 
 #ifdef ALAM_LIGHTING
@@ -91,4 +95,9 @@ typedef enum
 
 extern light_t lspr[NUMLIGHTS];
 extern light_t *t_lspr[NUMSPRITES];
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/hardware/hw_main.h

@@ -20,6 +20,10 @@
 #include "../d_player.h"
 #include "../r_defs.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // Startup & Shutdown the hardware mode renderer
 void HWR_Startup(void);
 void HWR_Switch(void);
@@ -150,4 +154,8 @@ extern boolean gl_maptexturesloaded;
 extern boolean gl_sessioncommandsadded;
 extern boolean gl_shadersavailable;
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/hardware/hw_md2.h

@@ -17,6 +17,10 @@
 #include "hw_glob.h"
 #include "hw_model.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #if defined(_MSC_VER)
 #pragma pack()
 #endif
@@ -46,4 +50,8 @@ boolean HWR_DrawModel(gl_vissprite_t *spr);
 
 #define PLAYERMODELPREFIX "PLAYER"
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif // _HW_MD2_H_

src/hardware/hw_md2load.h

@@ -13,7 +13,15 @@
 #include "hw_model.h"
 #include "../doomtype.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // Load the Model
 model_t *MD2_LoadModel(const char *fileName, int ztag, boolean useFloat);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/hardware/hw_md3load.h

@@ -13,7 +13,15 @@
 #include "hw_model.h"
 #include "../doomtype.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // Load the Model
 model_t *MD3_LoadModel(const char *fileName, int ztag, boolean useFloat);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/hardware/hw_model.h

@@ -12,6 +12,10 @@
 
 #include "../doomtype.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef struct
 {
 	float x, y, z;
@@ -132,4 +136,8 @@ void CreateVBOTiny(mesh_t *mesh, tinyframe_t *frame);
 void CreateVBO(mesh_t *mesh, mdlframe_t *frame);
 void DeleteVBOs(model_t *model);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/hardware/hws_data.h

@@ -12,6 +12,10 @@
 #ifndef __HWS_DATA_H__
 #define __HWS_DATA_H__
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define NORMAL_SEP 128
 
 // abuse?
@@ -113,4 +117,8 @@ typedef struct snddev_s
 #endif
 } snddev_t;
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif //__HWS_DATA_H__

src/hardware/r_opengl/r_opengl.h

@@ -47,6 +47,10 @@
 #include "../../doomdef.h"
 #include "../hw_drv.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // ==========================================================================
 //                                                                DEFINITIONS
 // ==========================================================================
@@ -138,4 +142,8 @@ typedef enum
 	GLF_NOTEXENV   = 0x02,
 } oglflags_t;
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/hardware/r_opengl/r_vbo.h

@@ -9,6 +9,10 @@
 #ifndef _R_VBO_H_
 #define _R_VBO_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef struct
 {
 	float x, y, z;		// Vertex
@@ -49,4 +53,8 @@ typedef struct
 	unsigned char r, g, b, a;	// Color
 } vbo64_t;
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/hardware/u_list.h

@@ -10,6 +10,10 @@
 #ifndef _U_LIST_H_
 #define _U_LIST_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef struct listitem_s
 {
 	struct listitem_s *next;
@@ -26,4 +30,8 @@ void ListRemoveNoFree(void *pItem, listitem_t **itemHead);
 unsigned int ListGetCount(void *itemHead);
 listitem_t *ListGetByIndex(void *itemHead, unsigned int index);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/hu_stuff.h

@@ -19,6 +19,10 @@
 #include "r_defs.h"
 #include "font.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 //------------------------------------
 //           heads up font
 //------------------------------------
@@ -152,4 +156,9 @@ void HU_DoCEcho(const char *msg);
 // Demo playback info
 extern UINT32 hu_demotime;
 extern UINT32 hu_demolap;
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/i_addrinfo.h

@@ -12,6 +12,10 @@
 #ifndef __I_ADDRINFO__
 #define __I_ADDRINFO__
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #ifdef __GNUG__
 #pragma interface
 #endif
@@ -68,4 +72,8 @@ int I_getaddrinfo(const char *node, const char *service,
 #endif
 
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/i_joy.h

@@ -15,6 +15,10 @@
 
 #include "g_input.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /*!
   \brief	-JOYAXISRANGE to +JOYAXISRANGE for each axis
 
@@ -54,4 +58,8 @@ struct JoyType_t
 
 extern JoyType_t Joystick[MAXSPLITSCREENPLAYERS];
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif // __I_JOY_H__

src/i_net.h

@@ -33,6 +33,10 @@
 
 #define NO_BAN_TIME (time_t)(-1)
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 extern INT16 hardware_MAXPACKETLENGTH;
 extern INT32 net_bandwidth; // in byte/s
 
@@ -182,4 +186,8 @@ extern bannednode_t *bannednode;
 /// \brief Called by D_SRB2Main to be defined by extern network driver
 boolean I_InitNetwork(void);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/i_sound.h

@@ -18,6 +18,10 @@
 #include "sounds.h"
 #include "command.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // copied from SDL mixer, plus GME
 typedef enum {
 	MU_NONE,
@@ -241,4 +245,8 @@ boolean I_FadeSong(UINT8 target_volume, UINT32 ms, void (*callback)(void));
 boolean I_FadeOutStopSong(UINT32 ms);
 boolean I_FadeInPlaySong(UINT32 ms, boolean looping);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/i_system.h

@@ -17,6 +17,10 @@
 #include "d_ticcmd.h"
 #include "d_event.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #ifdef __GNUG__
 #pragma interface
 #endif
@@ -361,4 +365,8 @@ void I_RegisterSysCommands(void);
 
 void I_CursedWindowMovement(int xd, int yd);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/i_tcp.h

@@ -13,6 +13,10 @@
 #ifndef __I_TCP__
 #define __I_TCP__
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 extern UINT16 current_port;
 
 /**	\brief	The I_InitTcpNetwork function
@@ -28,4 +32,8 @@ boolean I_InitTcpNetwork(void);
 boolean I_InitTcpDriver(void);
 void I_ShutdownTcpDriver(void);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/i_threads.h

@@ -14,6 +14,10 @@
 #ifndef I_THREADS_H
 #define I_THREADS_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef void (*I_thread_fn)(void *userdata);
 
 typedef void * I_mutex;
@@ -35,5 +39,9 @@ void      I_hold_cond       (I_cond *, I_mutex);
 void      I_wake_one_cond   (I_cond *);
 void      I_wake_all_cond   (I_cond *);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif/*I_THREADS_H*/
 #endif/*HAVE_THREADS*/

src/i_video.h

@@ -16,6 +16,10 @@
 
 #include "doomtype.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #ifdef __GNUG__
 #pragma interface
 #endif
@@ -153,4 +157,8 @@ void I_EndRead(void);
 
 UINT32 I_GetRefreshRate(void);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/info.h

@@ -19,6 +19,10 @@
 #include "sounds.h"
 #include "m_fixed.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // deh_tables.c now has lists for the more named enums! PLEASE keep them up to date!
 // For great modding!!
 
@@ -6739,4 +6743,8 @@ void P_BackupTables(void);
 
 void P_ResetData(INT32 flags);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/k_battle.h

@@ -4,6 +4,10 @@
 #include "doomtype.h"
 #include "d_player.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 extern struct battleovertime
 {
 	UINT16 enabled; ///< Has this been initalized yet?
@@ -31,4 +35,8 @@ void K_SetupMovingCapsule(mapthing_t *mt, mobj_t *mobj);
 void K_SpawnPlayerBattleBumpers(player_t *p);
 void K_BattleInit(boolean singleplayercontext);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/k_bheap.h

@@ -15,6 +15,10 @@
 
 #include "doomdef.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef void(*updateindexfunc)(void *const, const size_t);
 
 struct bheapitem_t
@@ -150,4 +154,8 @@ size_t K_BHeapContains(bheap_t *const heap, void *const data, size_t index);
 
 boolean K_BHeapFree(bheap_t *const heap);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/k_boss.h

@@ -16,6 +16,10 @@
 #include "doomdef.h"
 #include "doomstat.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef enum
 {
 	SPOT_NONE = 0,
@@ -112,4 +116,8 @@ void K_UpdateBossHealthBar(fixed_t magnitude, tic_t jitterlen);
 
 void K_DeclareWeakspot(mobj_t *spot, spottype_t spottype, UINT16 color, boolean minimap);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/k_bot.h

@@ -17,6 +17,10 @@
 #include "d_player.h"
 #include "r_defs.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // Maximum value of botvars.difficulty
 #define MAXBOTDIFFICULTY 13
 
@@ -270,4 +274,8 @@ void K_UpdateBotGameplayVars(player_t *player);
 
 void K_BotItemUsage(player_t *player, ticcmd_t *cmd, INT16 turnamt);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/k_brightmap.h

@@ -17,6 +17,10 @@
 #include "doomdef.h"
 #include "doomtype.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 struct brightmapStorage_t
 {
 	// Brightmap storage struct.
@@ -46,4 +50,8 @@ void K_InitBrightmapsPwad(INT32 wadNum);
 
 void K_InitBrightmaps(void);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif // __K_BRIGHTMAP_H__

src/k_collide.h

@@ -4,6 +4,10 @@
 #include "doomtype.h"
 #include "p_mobj.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 angle_t K_GetCollideAngle(mobj_t *t1, mobj_t *t2);
 
 boolean K_BananaBallhogCollide(mobj_t *t1, mobj_t *t2);
@@ -27,4 +31,8 @@ boolean K_SMKIceBlockCollide(mobj_t *t1, mobj_t *t2);
 
 boolean K_PvPTouchDamage(mobj_t *t1, mobj_t *t2);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/k_color.h

@@ -15,6 +15,10 @@
 #include "doomdef.h"
 #include "doomtype.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define SKIN_RAMP_LENGTH 16
 #define DEFAULT_STARTTRANSCOLOR 96
 #define NUM_PALETTE_ENTRIES 256
@@ -110,4 +114,8 @@ void K_HitlagColormap(UINT8 *dest_colormap);
 --------------------------------------------------*/
 void K_GenerateKartColormap(UINT8 *dest_colormap, INT32 skinnum, UINT8 color);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/k_director.h

@@ -3,6 +3,13 @@
 /// \file  k_director.h
 /// \brief SRB2kart automatic spectator camera.
 
+#ifndef __K_DIRECTOR_H__
+#define __K_DIRECTOR_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 extern struct directorinfo
 {
     tic_t cooldown; // how long has it been since we last switched?
@@ -18,4 +25,10 @@ extern struct directorinfo
 void K_InitDirector(void);
 void K_UpdateDirector(void);
 void K_DrawDirectorDebugger(void);
-void K_DirectorFollowAttack(player_t *player, mobj_t *inflictor, mobj_t *source);
+void K_DirectorFollowAttack(player_t *player, mobj_t *inflictor, mobj_t *source);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // __K_DIRECTOR_H__

src/k_follower.h

@@ -16,6 +16,10 @@
 #include "doomdef.h"
 #include "doomstat.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define FOLLOWERCOLOR_MATCH UINT16_MAX
 #define FOLLOWERCOLOR_OPPOSITE (UINT16_MAX-1)
 
@@ -211,5 +215,8 @@ void K_HandleFollower(player_t *player);
 
 void K_RemoveFollower(player_t *player);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
 
 #endif // __K_FOLLOWER__

src/k_grandprix.h

@@ -16,6 +16,10 @@
 #include "doomdef.h"
 #include "doomstat.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define GPEVENT_NONE 0
 #define GPEVENT_BONUS 1
 #define GPEVENT_SPECIAL 2
@@ -166,4 +170,8 @@ void K_PlayerLoseLife(player_t *player);
 
 boolean K_CanChangeRules(boolean allowdemos);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/k_hud.h

@@ -9,12 +9,16 @@
 /// \file  k_hud.h
 /// \brief HUD drawing functions exclusive to Kart
 
+#ifndef __K_HUD__
+#define __K_HUD__
+
 #include "doomtype.h"
 #include "doomstat.h"
 #include "hu_stuff.h"
 
-#ifndef __K_HUD__
+#ifdef __cplusplus
-#define __K_HUD__
+extern "C" {
+#endif
 
 #define RINGANIM_NUMFRAMES 10
 #define RINGANIM_DELAYMAX 5
@@ -43,4 +47,8 @@ void K_DrawLikeMapThumbnail(INT32 x, INT32 y, INT32 width, UINT32 flags, patch_t
 
 extern patch_t *kp_facehighlight[8];
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/k_kart.h

@@ -10,6 +10,10 @@
 #include "d_player.h" // Need for player_t
 #include "command.h" // Need for player_t
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define KART_FULLTURN 800
 
 /*
@@ -193,5 +197,9 @@ fixed_t K_ItemScaleForPlayer(player_t *player);
 void K_SetItemOut(player_t *player);
 void K_UnsetItemOut(player_t *player);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 // =========================================================================
 #endif  // __K_KART__

src/k_menu.h

@@ -24,6 +24,10 @@
 #include "i_threads.h"
 #include "mserv.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define SERVERLISTDEBUG
 
 // flags for items in the menu
@@ -1195,5 +1199,8 @@ boolean M_StatisticsInputs(INT32 ch);
 	NULL\
 }
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
 
 #endif //__K_MENU__

src/k_objects.h

@@ -2,6 +2,10 @@
 #ifndef k_objects_H
 #define k_objects_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* Hyudoro */
 void Obj_InitHyudoroCenter(mobj_t *center, mobj_t *master);
 void Obj_HyudoroDeploy(mobj_t *master);
@@ -69,4 +73,8 @@ void Obj_UFOPieceRemoved(mobj_t *piece);
 mobj_t *Obj_CreateSpecialUFO(void);
 UINT32 K_GetSpecialUFODistance(void);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif/*k_objects_H*/

src/k_pathfind.h

@@ -15,6 +15,10 @@
 
 #include "doomtype.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // function pointer for returning a node's connected node data
 // should return a pointer to an array of pointers to the data, as arguments takes a node's data and a pointer that the
 // number of connected nodes should be placed into
@@ -84,4 +88,8 @@ struct pathfindsetup_t {
 --------------------------------------------------*/
 boolean K_PathfindAStar(path_t *const path, pathfindsetup_t *const pathfindsetup);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/k_profiles.h

@@ -22,6 +22,10 @@
 #include "g_game.h"			// game CVs
 #include "k_follower.h"		// followers
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // We have to redefine this because somehow including r_skins.h causes a redefinition of node_t since that's used for both net nodes and BSP nodes too......
 // And honestly I don't wanna refactor that.
 #define SKINNAMESIZE 16
@@ -152,4 +156,8 @@ SINT8 PR_ProfileUsedBy(profile_t *p);
 
 profile_t *PR_GetPlayerProfile(player_t *player);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/k_pwrlv.h

@@ -15,6 +15,10 @@
 #include "doomdef.h"
 #include "d_player.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef enum
 {
 	PWRLV_DISABLED = -1,
@@ -47,4 +51,8 @@ void K_CashInPowerLevels(void);
 void K_SetPowerLevelScrambles(SINT8 powertype);
 void K_PlayerForfeit(UINT8 playernum, boolean nopointloss);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/k_race.h

@@ -14,6 +14,10 @@
 
 #include "r_defs.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 extern line_t *finishBeamLine;
 
 #define FINISHLINEBEAM_SPACING (48*mapobjectscale)
@@ -66,4 +70,8 @@ boolean K_GenerateFinishBeamLine(void);
 
 void K_RunFinishLineBeam(void);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/k_respawn.h

@@ -15,6 +15,10 @@
 #include "k_waypoint.h"
 #include "d_player.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define RESPAWN_DIST 1024
 #define RESPAWN_TIME 48
 #define RESPAWNST_NONE 0x00
@@ -98,4 +102,8 @@ size_t K_NextRespawnWaypointIndex(waypoint_t *waypoint);
 
 void K_RespawnChecker(player_t *player);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/k_roulette.h

@@ -16,6 +16,10 @@
 #include "doomtype.h"
 #include "d_player.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define ROULETTE_SPACING (36 << FRACBITS)
 #define ROULETTE_SPACING_SPLITSCREEN (16 << FRACBITS)
 
@@ -165,5 +169,8 @@ fixed_t K_GetRouletteOffset(itemroulette_t *const roulette, fixed_t renderDelta)
 
 void K_KartItemRoulette(player_t *const player, ticcmd_t *cmd);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
 
 #endif // __K_ROULETTE_H__

src/k_specialstage.h

@@ -16,6 +16,10 @@
 #include "doomdef.h"
 #include "doomstat.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 extern struct specialStage
 {
 	boolean active;						///< If true, then we are in a special stage
@@ -51,5 +55,8 @@ void K_InitSpecialStage(void);
 
 void K_TickSpecialStage(void);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
 
 #endif

src/k_terrain.h

@@ -20,6 +20,10 @@
 #include "m_fixed.h"
 #include "p_mobj.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define TERRAIN_NAME_LEN 32
 
 struct t_splash_t
@@ -565,4 +569,8 @@ void K_UpdateTerrainOverlay(mobj_t *mo);
 
 void K_InitTerrain(UINT16 wadNum);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif // __K_TERRAIN_H__

src/k_waypoint.h

@@ -18,6 +18,10 @@
 #include "p_mobj.h"
 #include "k_pathfind.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define DEFAULT_WAYPOINT_RADIUS (384)
 
 struct waypoint_t
@@ -419,4 +423,8 @@ void K_ClearWaypoints(void);
 
 void K_AdjustWaypointsParameters (void);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/keys.h

@@ -13,6 +13,10 @@
 #ifndef __KEYS_H__
 #define __KEYS_H__
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // These are the key codes as posted by the keyboard handler,
 // ascii codes are 0->127,
 // scancodes are 0x80 + 0->127
@@ -94,4 +98,8 @@
 #define KEY_OPENBRACKETS
 #define KEY_CLOSEBRACKETS
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/lua_hook.h

@@ -10,6 +10,9 @@
 /// \file  lua_hook.h
 /// \brief hooks for Lua scripting
 
+#ifndef __LUA_HOOK_H__
+#define __LUA_HOOK_H__
+
 #include "r_defs.h"
 #include "d_player.h"
 #include "s_sound.h"
@@ -17,6 +20,10 @@
 
 #include "lua_hudlib_drawlist.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /*
 Do you know what an 'X Macro' is? Such a macro is called over each element of
 a list and expands the input. I use it for the hook lists because both an enum
@@ -143,3 +150,9 @@ int  LUA_HookViewpointSwitch(player_t *player, player_t *newdisplayplayer, boole
 int  LUA_HookSeenPlayer(player_t *player, player_t *seenfriend);
 int  LUA_HookShouldJingleContinue(player_t *, const char *musname);
 int  LUA_HookMusicChange(const char *oldname, struct MusicChange *);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // __LUA_HOOK_H__

src/lua_hud.h

@@ -15,6 +15,10 @@
 
 #include "lua_hudlib_drawlist.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 enum hud {
 	hud_stagetitle = 0,
 	hud_textspectator,
@@ -49,4 +53,8 @@ boolean LUA_HudEnabled(enum hud option);
 
 void LUA_SetHudHook(int hook, huddrawlist_h list);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif // __LUA_HUD_H__

src/lua_libs.h

@@ -9,6 +9,12 @@
 //-----------------------------------------------------------------------------
 /// \file  lua_libs.h
 /// \brief libraries for Lua scripting
+#ifndef __LUA_LIBS_H__
+#define __LUA_LIBS_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 extern lua_State *gL;
 
@@ -108,3 +114,9 @@ int LUA_TagLib(lua_State *L);
 int LUA_PolyObjLib(lua_State *L);
 int LUA_BlockmapLib(lua_State *L);
 int LUA_HudLib(lua_State *L);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // __LUA_LIBS_H__

src/lua_script.h

@@ -23,6 +23,10 @@
 #include "blua/lualib.h"
 #include "blua/lauxlib.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define lua_optboolean(L, i) (!lua_isnoneornil(L, i) && lua_toboolean(L, i))
 #define lua_opttrueboolean(L, i) (lua_isnoneornil(L, i) || lua_toboolean(L, i))
 
@@ -140,4 +144,8 @@ void COM_Lua_f(void);
 #define INLEVEL if (! ISINLEVEL)\
 return luaL_error(L, "This can only be used in a level!");
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif/*LUA_SCRIPT_H*/

src/lzf.h

@@ -13,6 +13,10 @@
 #define LZF_H
 #include <stdio.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /***********************************************************************
 **
 **	lzf -- an extremely fast/free compression/decompression-method
@@ -71,5 +75,9 @@ size_t
 lzf_decompress (const void *const in_data,  size_t in_len,
                 void             *out_data, size_t out_len);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif
 

src/m_aatree.h

@@ -16,6 +16,10 @@
 
 #include "doomtype.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // Flags for AA trees.
 #define AATREE_ZUSER	1		// Treat values as z_zone-allocated blocks and set their user fields
 
@@ -27,4 +31,8 @@ void M_AATreeSet(aatree_t *aatree, INT32 key, void* value);
 void *M_AATreeGet(aatree_t *aatree, INT32 key);
 void M_AATreeIterate(aatree_t *aatree, aatree_iter_t callback);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/m_anigif.h

@@ -17,6 +17,10 @@
 #include "command.h"
 #include "screen.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #if NUMSCREENS > 2
 #define HAVE_ANIGIF
 #endif
@@ -29,4 +33,8 @@ INT32 GIF_close(void);
 
 extern consvar_t cv_gif_optimize, cv_gif_downscale, cv_gif_dynamicdelay, cv_gif_localcolortable;
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/m_argv.h

@@ -14,6 +14,10 @@
 #ifndef __M_ARGV__
 #define __M_ARGV__
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 //
 // MISC
 //
@@ -39,4 +43,8 @@ const char *M_GetNextParm(void);
 // Finds and loads a response file (@moreargs.txt)
 void M_FindResponseFile(void);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif //__M_ARGV__

src/m_bbox.h

@@ -16,6 +16,10 @@
 
 #include "m_fixed.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /**	\brief	Bounding box coordinate storage
 */
 
@@ -34,4 +38,8 @@ void M_AddToBox(fixed_t *box, fixed_t x, fixed_t y);
 boolean M_PointInBox(fixed_t *box, fixed_t x, fixed_t y);
 boolean M_CircleTouchBox(fixed_t *box, fixed_t circlex, fixed_t circley, fixed_t circleradius);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/m_cheat.h

@@ -19,6 +19,10 @@
 #include "p_mobj.h"
 #include "command.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef enum {
 	CHEAT_NOCLIP,
 	CHEAT_GOD,
@@ -83,4 +87,8 @@ void Command_CauseCfail_f(void);
 void Command_Dumplua_f(void);
 #endif
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/m_cond.h

@@ -10,8 +10,15 @@
 /// \file  m_cond.h
 /// \brief Unlockable condition system for SRB2 version 2.1
 
+#ifndef __M_COND_H__
+#define __M_COND_H__
+
 #include "doomdef.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // --------
 // Typedefs
 // --------
@@ -234,3 +241,9 @@ INT32 M_EmblemSkinNum(emblem_t *emblem);
 UINT16 M_EmblemMapNum(emblem_t *emblem);
 
 #define M_Achieved(a) ((a) >= MAXCONDITIONSETS || gamedata->achieved[a])
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // __M_COND_H__

src/m_dllist.h

@@ -25,6 +25,10 @@
 #ifndef M_DLLIST_H__
 #define M_DLLIST_H__
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #ifdef _MSC_VER
 #pragma warning(disable : 4706)
 #endif
@@ -54,6 +58,10 @@ FUNCINLINE static ATTRINLINE void M_DLListRemove(mdllistitem_t *item)
 		next->prev = prev;
 }
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif
 
 // EOF

src/m_easing.h

@@ -15,6 +15,10 @@
 #include "doomtype.h"
 #include "m_fixed.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef enum
 {
 	EASE_LINEAR = 0,
@@ -98,4 +102,9 @@ EASINGFUNC(OutBackParameterized) /* Easing_OutBackParameterized */
 EASINGFUNC(InOutBackParameterized) /* Easing_InOutBackParameterized */
 
 #undef EASINGFUNC
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/m_fixed.h

@@ -20,6 +20,10 @@
 #include <stdlib.h>
 #endif
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /*!
   \brief bits of the fraction
 */
@@ -413,4 +417,8 @@ void FM_MultMatrix(matrix_t *dest, const matrix_t *multme);
 void FM_Translate(matrix_t *dest, fixed_t x, fixed_t y, fixed_t z);
 void FM_Scale(matrix_t *dest, fixed_t x, fixed_t y, fixed_t z);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif //m_fixed.h

src/m_misc.h

@@ -21,6 +21,10 @@
 #include "d_event.h" // Screenshot responder
 #include "command.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef enum {
 	MM_OFF = 0,
 	MM_APNG,
@@ -140,4 +144,8 @@ FUNCMATH UINT8 M_CountBits(UINT32 num, UINT8 size);
 #include "w_wad.h"
 extern char configfile[MAX_WADPATH];
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif

src/m_perfstats.h

@@ -16,6 +16,10 @@
 #include "lua_script.h"
 #include "p_local.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef enum
 {
 	PS_OFF = 0,
@@ -61,4 +65,8 @@ void PS_ResetBotInfo(void);
 
 void M_DrawPerfStats(void);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
 #endif