Port to musl libc

Closes nillerusr#72 and uses some patches from nillerusr#193 for better portability
between UNIXes.

Also this patch replaces so many NULLs with 0 or '\0' because musl
headers redefines it and anyway it is better practice.

Moreover, due to very "cool" code from Valve, some modules comes with
disabled fortify which distributes with build-base in Alpine
(fortify is something like compile-time checking for memory bounds)

appframework/sdlmgr.cpp

@@ -270,7 +270,7 @@ class CSDLMgr : public ILauncherMgr
 
 	// Get the next N events. The function returns the number of events that were filled into your array.
 	virtual int GetEvents( CCocoaEvent *pEvents, int nMaxEventsToReturn, bool debugEvents = false );
-#if defined(LINUX) || defined(PLATFORM_BSD)
+#if defined(POSIX) && !defined(OSX)
 	virtual int PeekAndRemoveKeyboardEvents( bool *pbEsc, bool *pbReturn, bool *pbSpace, bool debugEvent = false );
 #endif
 
@@ -1004,7 +1004,7 @@ int CSDLMgr::GetEvents( CCocoaEvent *pEvents, int nMaxEventsToReturn, bool debug
 	return nToWrite;
 }
 
-#if defined(LINUX) || defined(PLATFORM_BSD)
+#if defined(POSIX) && !defined(OSX)
 
 int CSDLMgr::PeekAndRemoveKeyboardEvents( bool *pbEsc, bool *pbReturn, bool *pbSpace, bool debugEvent )
 {

appframework/wscript

@@ -41,6 +41,7 @@ def build(bld):
 
 	includes = [
 		'.',
+		'../common',
 		'../public',
 		'../public/tier0',
 		'../public/tier1'

common/freetype/config/ftconfig.h

@@ -3,8 +3,6 @@
 
 #ifdef ANDROID
 #include <sys/cdefs.h>
-#elif defined(OSX) || defined(PLATFORM_BSD)
-#include <stdint.h>
 #else
 #include <bits/wordsize.h>
 #endif

common/vgui_surfacelib/FontManager.h

@@ -12,7 +12,7 @@
 #endif
 
 #include <vgui/VGUI.h>
-#include "vgui_surfacelib/FontAmalgam.h"
+#include "common/vgui_surfacelib/FontAmalgam.h"
 #include "materialsystem/imaterialsystem.h"
 #include "filesystem.h"
 #include "vguifont.h"

engine/audio/snd_mix.cpp

@@ -1999,7 +1999,7 @@ void CChannelCullList::Initialize( CChannelList &list )
 		else
 		{
 			m_channelInfo[i].m_vol = -1;
-			m_channelInfo[i].m_nameHash = NULL; // doesn't matter
+			m_channelInfo[i].m_nameHash = 0; // doesn't matter
 		}
 	}
 

engine/bugreporter.cpp

@@ -110,7 +110,7 @@
 #define BUG_REPOSITORY_URL "\\\\fileserver\\bugs"
 #elif defined(OSX)
 #define BUG_REPOSITORY_URL "/Volumes/bugs"
-#elif defined(LINUX) || defined(PLATFORM_BSD)
+#elif defined(POSIX)
 #define BUG_REPOSITORY_URL "\\\\fileserver\\bugs"
 #else
 //#error
@@ -2257,7 +2257,7 @@ void NonFileSystem_CreatePath (const char *path)
 	}
 }
 
-#if defined(LINUX) || defined(PLATFORM_BSD)
+#if defined(POSIX) && !defined(OSX)
 #define COPYFILE_ALL 0
 #define BSIZE 65535
 int copyfile( const char *local, const char *remote, void *ignored, int ignoredFlags )

engine/disp_interface.cpp

@@ -1298,7 +1298,7 @@ int DispInfo_ComputeIndex( HDISPINFOARRAY hArray, IDispInfo* pInfo )
 {
 	CDispArray *pArray = static_cast<CDispArray*>( hArray );
 	if( !pArray )
-		return NULL;
+		return 0;
 
 	intp iElement = ((intp)pInfo - (intp)(pArray->m_pDispInfos)) / sizeof(CDispInfo);
 

engine/disp_mapload.cpp

@@ -801,7 +801,7 @@ CDispInfo::CDispInfo()
 
 	m_pMesh = NULL;
 
-	m_Tag = NULL;
+	m_Tag = 0;
 	m_pDispArray = NULL;
 
 	m_FirstDecal = DISP_DECAL_HANDLE_INVALID;

engine/downloadthread.cpp

@@ -587,12 +587,12 @@ static size_t curlHeaderFn( void *ptr, size_t size, size_t nmemb, void *stream)
 	char *pszValue = NULL;
 	RequestContext_t *pRC = (RequestContext_t *) stream;
 
-	pszHeader[ ( size * nmemb - 1 ) ] = NULL;
+	pszHeader[ ( size * nmemb - 1 ) ] = '\0';
 	pszValue = Q_strstr( pszHeader, ":" );
 	if ( pszValue )
 	{
 		// null terminate the header name, and point pszValue at it's value
-		*pszValue = NULL;
+		*pszValue = '\0';
 		pszValue++;
 		Q_StrTrim( pszValue );
 	}

engine/saverestore_filesystem.cpp

@@ -79,7 +79,7 @@ class CSaveDirectory
 			pBuffer = NULL; 
 			pCompressedBuffer = NULL;
 			nSize = 0;
-			nCompressedSize = NULL;
+			nCompressedSize = 0;
 		}
 
 

engine/sys_dll.cpp

@@ -1578,22 +1578,22 @@ CON_COMMAND( star_memory, "Dump memory stats" )
 {
 	// get a current stat of available memory
 	// 32 MB is reserved and fixed by OS, so not reporting to allow memory loggers sync
-#ifdef LINUX
+#ifdef PLATFORM_GLIBC
 	struct mallinfo memstats = mallinfo( );
 	Msg( "sbrk size: %.2f MB, Used: %.2f MB, #mallocs = %d\n",
 		 memstats.arena / ( 1024.0 * 1024.0), memstats.uordblks / ( 1024.0 * 1024.0 ), memstats.hblks );
 #elif OSX
 	struct mstats memstats = mstats( );
 	Msg( "Available %.2f MB, Used: %.2f MB, #mallocs = %lu\n",
 		 memstats.bytes_free / ( 1024.0 * 1024.0), memstats.bytes_used / ( 1024.0 * 1024.0 ), memstats.chunks_used );
-#elif PLATFORM_BSD
-# warning TODO: Implement memory stats (peace of sheet of course)
-#else // Win32
+#elif _WIN32
 	MEMORYSTATUS stat;
 	GlobalMemoryStatus( &stat );
 	Msg( "Available: %.2f MB, Used: %.2f MB, Free: %.2f MB\n", 
 		stat.dwTotalPhys/( 1024.0f*1024.0f ) - 32.0f,
 		( stat.dwTotalPhys - stat.dwAvailPhys )/( 1024.0f*1024.0f ) - 32.0f, 
 		stat.dwAvailPhys/( 1024.0f*1024.0f ) );
+#else
+# warning TODO: Implement memory stats (peace of sheet of course)
 #endif
 }

engine/sys_dll2.cpp

@@ -279,7 +279,7 @@ static void posix_signal_handler( int i )
 #define DO_TRY		if ( sigsetjmp( g_mark, 1 ) == 0 )
 #define DO_CATCH	else
 
-#if defined( OSX ) || defined(PLATFORM_BSD)
+#if !defined(PLATFORM_GLIBC)
 #define __sighandler_t sig_t
 #endif
 

engine/sys_mainwind.cpp

@@ -25,9 +25,7 @@
 #elif defined(_X360)
 	// nothing to include for 360
 #elif defined(OSX)
-#elif defined(LINUX) || defined(PLATFORM_BSD)
-	#include "tier0/dynfunction.h"
-#elif defined(_WIN32)
+#elif defined(POSIX) || defined(_WIN32)
 	#include "tier0/dynfunction.h"
 #else
 	#error
@@ -833,7 +831,7 @@ LRESULT CGame::WindowProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
     // return 0 if handled message, 1 if not
     return lRet;
 }
-#elif defined(OSX) || defined(LINUX) || defined(_WIN32) || defined(PLATFORM_BSD)
+#elif defined(POSIX) || defined(_WIN32)
 
 #else
 #error

game/client/wscript

@@ -77,6 +77,7 @@ def build(bld):
 	includes += game["includes"]
 	defines = game["defines"]
 
+	defines.append('_FORTIFY_SOURCE=0')
 	defines.remove('PROTECTED_THINGS_ENABLE')
 
 	bld.shlib(

game/server/ai_basenpc.cpp

@@ -8803,7 +8803,7 @@ void CAI_BaseNPC::DrawDebugGeometryOverlays(void)
 				{
 					float	r,g,b;
 					char	debugText[255];
-					debugText[0] = NULL;
+					debugText[0] = '\0';
 
 					if (npcEnemy == GetEnemy())
 					{

game/server/ai_hint.cpp

@@ -311,7 +311,7 @@ int CAI_HintManager::FindAllHints( CAI_BaseNPC *pNPC, const Vector &position, co
 	//  If we have no hints, bail
 	int c = CAI_HintManager::gm_AllHints.Count();
 	if ( !c )
-		return NULL;
+		return 0;
 
 	// Remove the nearest flag. It makes now sense with random.
 	bool hadNearest = hintCriteria.HasFlag( bits_HINT_NODE_NEAREST );

game/server/ai_pathfinder.cpp

@@ -1514,7 +1514,7 @@ AI_Waypoint_t *CAI_Pathfinder::BuildRadialRoute( const Vector &vStartPos, const
 		vNextPos.y	+= flRadius * sin( flCurAngle );
 
 		// Build a route from the last position to the current one
-		pNextRoute = BuildLocalRoute( vLastPos, vNextPos, NULL, NULL, NO_NODE, fRouteBits, goalTolerance);
+		pNextRoute = BuildLocalRoute( vLastPos, vNextPos, 0, 0, NO_NODE, fRouteBits, goalTolerance);
 
 		// If we can't find a route, we failed
 		if ( pNextRoute == NULL )
@@ -1547,7 +1547,7 @@ AI_Waypoint_t *CAI_Pathfinder::BuildRadialRoute( const Vector &vStartPos, const
 		return NULL;
 
 	// Append a path to the final position
-	pLastRoute = BuildLocalRoute( vLastPos, vGoalPos, NULL, NULL, NO_NODE, bAirRoute ? bits_BUILD_FLY : bits_BUILD_GROUND, goalTolerance );	
+	pLastRoute = BuildLocalRoute( vLastPos, vGoalPos, 0, 0, NO_NODE, bAirRoute ? bits_BUILD_FLY : bits_BUILD_GROUND, goalTolerance );	
 	if ( pLastRoute == NULL )
 		return NULL;
 

game/server/genericactor.cpp

@@ -92,7 +92,7 @@ void CGenericActor::HandleAnimEvent( animevent_t *pEvent )
 //=========================================================
 int CGenericActor::GetSoundInterests ( void )
 {
-	return	NULL;
+	return	0;
 }
 
 //=========================================================

game/server/genericmonster.cpp

@@ -127,7 +127,7 @@ void CGenericNPC::HandleAnimEvent( animevent_t *pEvent )
 //=========================================================
 int CGenericNPC::GetSoundInterests ( void )
 {
-	return	NULL;
+	return	0;
 }
 
 //=========================================================

game/server/hl2/npc_breen.cpp

@@ -69,7 +69,7 @@ void CNPC_Breen::HandleAnimEvent( animevent_t *pEvent )
 //-----------------------------------------------------------------------------
 int CNPC_Breen::GetSoundInterests ( void )
 {
-	return	NULL;
+	return	0;
 }
 
 //-----------------------------------------------------------------------------

game/server/hl2/npc_eli.cpp

@@ -72,7 +72,7 @@ void CNPC_Eli::HandleAnimEvent( animevent_t *pEvent )
 //-----------------------------------------------------------------------------
 int CNPC_Eli::GetSoundInterests ( void )
 {
-	return	NULL;
+	return	0;
 }
 
 //-----------------------------------------------------------------------------

game/server/hl2/npc_gman.cpp

@@ -84,7 +84,7 @@ void CNPC_GMan::HandleAnimEvent( animevent_t *pEvent )
 //-----------------------------------------------------------------------------
 int CNPC_GMan::GetSoundInterests ( void )
 {
-	return NULL;
+	return 0;
 }
 
 

game/server/hl2/npc_kleiner.cpp

@@ -70,7 +70,7 @@ void CNPC_Kleiner::HandleAnimEvent( animevent_t *pEvent )
 //-----------------------------------------------------------------------------
 int CNPC_Kleiner::GetSoundInterests ( void )
 {
-	return	NULL;
+	return	0;
 }
 
 //-----------------------------------------------------------------------------

game/server/hl2/npc_mossman.cpp

@@ -82,7 +82,7 @@ void CNPC_Mossman::HandleAnimEvent( animevent_t *pEvent )
 //-----------------------------------------------------------------------------
 int CNPC_Mossman::GetSoundInterests ( void )
 {
-	return	NULL;
+	return	0;
 }
 
 //-----------------------------------------------------------------------------

game/server/player.cpp

@@ -1459,7 +1459,7 @@ void CBasePlayer::PackDeadPlayerItems( void )
 	int iPW = 0;// index into packweapons array
 	int iPA = 0;// index into packammo array
 
-	memset(rgpPackWeapons, NULL, sizeof(rgpPackWeapons) );
+	memset(rgpPackWeapons, 0, sizeof(rgpPackWeapons) );
 	memset(iPackAmmo, -1, sizeof(iPackAmmo) );
 
 	// get the game rules 

game/server/sceneentity.cpp

@@ -147,7 +147,7 @@ class CSceneManager : public CBaseEntity
 		CRestoreSceneSound()
 		{
 			actor = NULL;
-			soundname[ 0 ] = NULL;
+			soundname[ 0 ] = '\0';
 			soundlevel = SNDLVL_NORM;
 			time_in_past = 0.0f;
 		}

game/server/wscript

@@ -67,6 +67,7 @@ def build(bld):
 	includes += game["includes"]
 	defines = game["defines"]
 
+	defines.append('_FORTIFY_SOURCE=0')
 	defines.remove('PROTECTED_THINGS_ENABLE')
 
 	bld.shlib(

game/shared/particle_parse.cpp

@@ -172,7 +172,7 @@ void ParseParticleEffectsMap( const char *pMapName, bool bLoadSheets, IFileList
 	CUtlVector<CUtlString> files;
 	char szMapManifestFilename[MAX_PATH];
 
-	szMapManifestFilename[0] = NULL;
+	szMapManifestFilename[0] = '\0';
 
 	if ( pMapName && *pMapName )
 	{

game/shared/soundenvelope.cpp

@@ -1056,7 +1056,7 @@ CSoundPatch *CSoundControllerImp::SoundCreate( IRecipientFilter& filter, int nEn
 	CSoundPatch *pSound = new CSoundPatch;
 
 	// FIXME: This is done so we don't have to futz with the public interface
-	EHANDLE hEnt = (nEntIndex != -1) ? g_pEntityList->GetNetworkableHandle( nEntIndex ) : NULL;
+	EHANDLE hEnt = (nEntIndex != -1) ? g_pEntityList->GetNetworkableHandle( nEntIndex ) : 0;
 	pSound->Init( &filter, hEnt.Get(), CHAN_AUTO, pSoundName, SNDLVL_NORM );
 
 	return pSound;
@@ -1073,7 +1073,7 @@ CSoundPatch *CSoundControllerImp::SoundCreate( IRecipientFilter& filter, int nEn
 #endif
 
 	CSoundPatch *pSound = new CSoundPatch;
-	EHANDLE hEnt = (nEntIndex != -1) ? g_pEntityList->GetNetworkableHandle( nEntIndex ) : NULL;
+	EHANDLE hEnt = (nEntIndex != -1) ? g_pEntityList->GetNetworkableHandle( nEntIndex ) : 0;
 	pSound->Init( &filter, hEnt.Get(), channel, pSoundName, ATTN_TO_SNDLVL( attenuation ) );
 
 	return pSound;
@@ -1090,7 +1090,7 @@ CSoundPatch *CSoundControllerImp::SoundCreate( IRecipientFilter& filter, int nEn
 #endif
 
 	CSoundPatch *pSound = new CSoundPatch;
-	EHANDLE hEnt = (nEntIndex != -1) ? g_pEntityList->GetNetworkableHandle( nEntIndex ) : NULL;
+	EHANDLE hEnt = (nEntIndex != -1) ? g_pEntityList->GetNetworkableHandle( nEntIndex ) : 0;
 	pSound->Init( &filter, hEnt.Get(), channel, pSoundName, soundlevel );
 
 	return pSound;
@@ -1101,7 +1101,7 @@ CSoundPatch *CSoundControllerImp::SoundCreate( IRecipientFilter& filter, int nEn
 	CSoundPatch *pSound = new CSoundPatch;
 
 	// FIXME: This is done so we don't have to futz with the public interface
-	EHANDLE hEnt = (nEntIndex != -1) ? g_pEntityList->GetNetworkableHandle( nEntIndex ) : NULL;
+	EHANDLE hEnt = (nEntIndex != -1) ? g_pEntityList->GetNetworkableHandle( nEntIndex ) : 0;
 	pSound->Init( &filter, hEnt.Get(), es.m_nChannel, es.m_pSoundName, es.m_SoundLevel );
 	pSound->ChangeVolume( es.m_flVolume, 0 );
 	pSound->ChangePitch( es.m_nPitch, 0 );