From 9f15eaa7aeb735f71390e9b86bee4291d72edd44 Mon Sep 17 00:00:00 2001
From: icculus <icculus@edf5b092-35ff-0310-97b2-ce42778d08ea>
Date: Tue, 15 Sep 2009 06:32:05 +0000
Subject: Let a separate libdir be specified for loading libraries.

   Partially fixes Bugzilla #4271.


git-svn-id: svn://svn.icculus.org/quake3/trunk@1626 edf5b092-35ff-0310-97b2-ce42778d08ea
---
 code/qcommon/files.c   |  3 +++
 code/qcommon/qcommon.h |  3 +++
 code/sys/sys_main.c    | 39 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 45 insertions(+)

diff --git a/code/qcommon/files.c b/code/qcommon/files.c
index 7bbfc45..0728267 100644
--- a/code/qcommon/files.c
+++ b/code/qcommon/files.c
@@ -241,6 +241,7 @@ static  cvar_t          *fs_apppath;
 #endif
 
 static	cvar_t		*fs_basepath;
+static	cvar_t		*fs_libpath;
 static	cvar_t		*fs_basegame;
 static	cvar_t		*fs_gamedirvar;
 static	searchpath_t	*fs_searchpaths;
@@ -2761,6 +2762,8 @@ static void FS_Startup( const char *gameName )
 	fs_debug = Cvar_Get( "fs_debug", "0", 0 );
 	fs_basepath = Cvar_Get ("fs_basepath", Sys_DefaultInstallPath(), CVAR_INIT );
 	fs_basegame = Cvar_Get ("fs_basegame", "", CVAR_INIT );
+	fs_libpath = Cvar_Get ("fs_libpath", Sys_DefaultLibPath(), CVAR_INIT );
+	
 	homePath = Sys_DefaultHomePath();
 	if (!homePath || !homePath[0]) {
 		homePath = fs_basepath->string;
diff --git a/code/qcommon/qcommon.h b/code/qcommon/qcommon.h
index a2d8106..1c970e6 100644
--- a/code/qcommon/qcommon.h
+++ b/code/qcommon/qcommon.h
@@ -1079,6 +1079,9 @@ char	*Sys_DefaultInstallPath(void);
 char    *Sys_DefaultAppPath(void);
 #endif
 
+void	Sys_SetDefaultLibPath(const char *path);
+char	*Sys_DefaultLibPath(void);
+
 void  Sys_SetDefaultHomePath(const char *path);
 char	*Sys_DefaultHomePath(void);
 const char *Sys_Dirname( char *path );
diff --git a/code/sys/sys_main.c b/code/sys/sys_main.c
index ff58187..56819d1 100644
--- a/code/sys/sys_main.c
+++ b/code/sys/sys_main.c
@@ -49,6 +49,7 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
 static char binaryPath[ MAX_OSPATH ] = { 0 };
 static char installPath[ MAX_OSPATH ] = { 0 };
+static char libPath[ MAX_OSPATH ] = { 0 };
 
 /*
 =================
@@ -93,6 +94,29 @@ char *Sys_DefaultInstallPath(void)
 		return Sys_Cwd();
 }
 
+/*
+=================
+Sys_SetDefaultLibPath
+=================
+*/
+void Sys_SetDefaultLibPath(const char *path)
+{
+	Q_strncpyz(libPath, path, sizeof(libPath));
+}
+
+/*
+=================
+Sys_DefaultLibPath
+=================
+*/
+char *Sys_DefaultLibPath(void)
+{
+	if (*libPath)
+		return libPath;
+	else
+		return Sys_Cwd();
+}
+
 /*
 =================
 Sys_DefaultAppPath
@@ -384,6 +408,7 @@ Used to load a development dll instead of a virtual machine
 #1 look down current path
 #2 look in fs_homepath
 #3 look in fs_basepath
+#4 look in fs_libpath
 =================
 */
 void *Sys_LoadDll( const char *name, char *fqpath ,
@@ -394,6 +419,7 @@ void *Sys_LoadDll( const char *name, char *fqpath ,
 	void  (*dllEntry)( intptr_t (*syscallptr)(intptr_t, ...) );
 	char  fname[MAX_OSPATH];
 	char  *basepath;
+	char  *libpath;
 	char  *homepath;
 	char  *pwdpath;
 	char  *gamedir;
@@ -405,6 +431,7 @@ void *Sys_LoadDll( const char *name, char *fqpath ,
 	// TODO: use fs_searchpaths from files.c
 	pwdpath = Sys_Cwd();
 	basepath = Cvar_VariableString( "fs_basepath" );
+	libpath = Cvar_VariableString( "fs_libpath" );
 	homepath = Cvar_VariableString( "fs_homepath" );
 	gamedir = Cvar_VariableString( "fs_game" );
 
@@ -416,6 +443,9 @@ void *Sys_LoadDll( const char *name, char *fqpath ,
 	if(!libHandle && basepath)
 		libHandle = Sys_TryLibraryLoad(basepath, gamedir, fname, fqpath);
 
+	if(!libHandle && libpath)
+		libHandle = Sys_TryLibraryLoad(libpath, gamedir, fname, fqpath);
+
 	if(!libHandle) {
 		Com_Printf ( "Sys_LoadDll(%s) failed to load library\n", name );
 		return NULL;
@@ -469,6 +499,14 @@ void Sys_ParseArgs( int argc, char **argv )
 #	endif
 #endif
 
+#ifndef DEFAULT_LIBDIR
+#	ifdef MACOS_X
+#		define DEFAULT_LIBDIR Sys_StripAppBundle(Sys_BinaryPath())
+#	else
+#		define DEFAULT_LIBDIR Sys_BinaryPath()
+#	endif
+#endif
+
 /*
 =================
 Sys_SigHandler
@@ -538,6 +576,7 @@ int main( int argc, char **argv )
 	Sys_ParseArgs( argc, argv );
 	Sys_SetBinaryPath( Sys_Dirname( argv[ 0 ] ) );
 	Sys_SetDefaultInstallPath( DEFAULT_BASEDIR );
+	Sys_SetDefaultLibPath( DEFAULT_LIBDIR );
 
 	// Concatenate the command line for passing to Com_Init
 	for( i = 1; i < argc; i++ )
-- 
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