Enable -fvisibility=hidden on Linux.

This will prevent further symbol clashes, and makes the shared libraries
 10 to 20 percent smaller.

We should enable this on other platforms, too, if we can guarantee they'll
 use gcc 4.0 or later and the platform supports it.



git-svn-id: svn://svn.icculus.org/quake3/trunk@1609 edf5b092-35ff-0310-97b2-ce42778d08ea

8 files changed, 17 insertions, 7 deletions

diff --git a/code/cgame/cg_main.c b/code/cgame/cg_main.c
index 15a5539..b5670c5 100644
--- a/code/cgame/cg_main.c
+++ b/code/cgame/cg_main.c
@@ -43,7 +43,7 @@ This is the only way control passes into the module.
 This must be the very first function compiled into the .q3vm file
 ================
 */
-intptr_t vmMain( int command, int arg0, int arg1, int arg2, int arg3, int arg4, int arg5, int arg6, int arg7, int arg8, int arg9, int arg10, int arg11  ) {
+Q_EXPORT intptr_t vmMain( int command, int arg0, int arg1, int arg2, int arg3, int arg4, int arg5, int arg6, int arg7, int arg8, int arg9, int arg10, int arg11  ) {
 
 	switch ( command ) {
 	case CG_INIT:
diff --git a/code/cgame/cg_syscalls.c b/code/cgame/cg_syscalls.c
index cdc1060..83606ac 100644
--- a/code/cgame/cg_syscalls.c
+++ b/code/cgame/cg_syscalls.c
@@ -31,7 +31,7 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 static intptr_t (QDECL *syscall)( intptr_t arg, ... ) = (intptr_t (QDECL *)( intptr_t, ...))-1;
 
 
-void dllEntry( intptr_t (QDECL  *syscallptr)( intptr_t arg,... ) ) {
+Q_EXPORT void dllEntry( intptr_t (QDECL  *syscallptr)( intptr_t arg,... ) ) {
 	syscall = syscallptr;
 }
 
diff --git a/code/game/g_main.c b/code/game/g_main.c
index cd176d3..5073fe0 100644
--- a/code/game/g_main.c
+++ b/code/game/g_main.c
@@ -198,7 +198,7 @@ This is the only way control passes into the module.
 This must be the very first function compiled into the .q3vm file
 ================
 */
-intptr_t vmMain( int command, int arg0, int arg1, int arg2, int arg3, int arg4, int arg5, int arg6, int arg7, int arg8, int arg9, int arg10, int arg11  ) {
+Q_EXPORT intptr_t vmMain( int command, int arg0, int arg1, int arg2, int arg3, int arg4, int arg5, int arg6, int arg7, int arg8, int arg9, int arg10, int arg11  ) {
 	switch ( command ) {
 	case GAME_INIT:
 		G_InitGame( arg0, arg1, arg2 );
diff --git a/code/game/g_syscalls.c b/code/game/g_syscalls.c
index 59d89bd..1868d0a 100644
--- a/code/game/g_syscalls.c
+++ b/code/game/g_syscalls.c
@@ -31,7 +31,7 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 static intptr_t (QDECL *syscall)( intptr_t arg, ... ) = (intptr_t (QDECL *)( intptr_t, ...))-1;
 
 
-void dllEntry( intptr_t (QDECL *syscallptr)( intptr_t arg,... ) ) {
+Q_EXPORT void dllEntry( intptr_t (QDECL *syscallptr)( intptr_t arg,... ) ) {
 	syscall = syscallptr;
 }
 
diff --git a/code/q3_ui/ui_main.c b/code/q3_ui/ui_main.c
index 2b10db0..8ec498d 100644
--- a/code/q3_ui/ui_main.c
+++ b/code/q3_ui/ui_main.c
@@ -40,7 +40,7 @@ This is the only way control passes into the module.
 This must be the very first function compiled into the .qvm file
 ================
 */
-intptr_t vmMain( int command, int arg0, int arg1, int arg2, int arg3, int arg4, int arg5, int arg6, int arg7, int arg8, int arg9, int arg10, int arg11  ) {
+Q_EXPORT intptr_t vmMain( int command, int arg0, int arg1, int arg2, int arg3, int arg4, int arg5, int arg6, int arg7, int arg8, int arg9, int arg10, int arg11  ) {
 	switch ( command ) {
 	case UI_GETAPIVERSION:
 		return UI_API_VERSION;
diff --git a/code/qcommon/q_shared.h b/code/qcommon/q_shared.h
index 99edd69..19db09c 100644
--- a/code/qcommon/q_shared.h
+++ b/code/qcommon/q_shared.h
@@ -81,6 +81,16 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 #endif
 #endif
 
+#if (defined _MSC_VER)
+#define Q_EXPORT __declspec(dllexport)
+#elif (defined __SUNPRO_C)
+#define Q_EXPORT __global
+#elif ((__GNUC__ >= 3) && (!__EMX__) && (!sun))
+#define Q_EXPORT __attribute__((visibility("default")))
+#else
+#define Q_EXPORT
+#endif
+
 /**********************************************************************
   VM Considerations
 
diff --git a/code/ui/ui_main.c b/code/ui/ui_main.c
index 2fccf16..6c9fb6e 100644
--- a/code/ui/ui_main.c
+++ b/code/ui/ui_main.c
@@ -164,7 +164,7 @@ void _UI_KeyEvent( int key, qboolean down );
 void _UI_MouseEvent( int dx, int dy );
 void _UI_Refresh( int realtime );
 qboolean _UI_IsFullscreen( void );
-intptr_t vmMain( int command, int arg0, int arg1, int arg2, int arg3, int arg4, int arg5, int arg6, int arg7, int arg8, int arg9, int arg10, int arg11  ) {
+Q_EXPORT intptr_t vmMain( int command, int arg0, int arg1, int arg2, int arg3, int arg4, int arg5, int arg6, int arg7, int arg8, int arg9, int arg10, int arg11  ) {
   switch ( command ) {
 	  case UI_GETAPIVERSION:
 		  return UI_API_VERSION;
diff --git a/code/ui/ui_syscalls.c b/code/ui/ui_syscalls.c
index 9048a95..5b3ab45 100644
--- a/code/ui/ui_syscalls.c
+++ b/code/ui/ui_syscalls.c
@@ -30,7 +30,7 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
 static intptr_t (QDECL *syscall)( intptr_t arg, ... ) = (intptr_t (QDECL *)( intptr_t, ...))-1;
 
-void dllEntry( intptr_t (QDECL *syscallptr)( intptr_t arg,... ) ) {
+Q_EXPORT void dllEntry( intptr_t (QDECL *syscallptr)( intptr_t arg,... ) ) {
 	syscall = syscallptr;
 }