Alexandre Julliard : libport: Work around Mac OS execve() breakage.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: be32b3413c2245dab21e03bb0cb5c107f68f2eb3
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=be32b3413c2245dab21e03bb0cb5c107f68f2eb3

Author: Alexandre Julliard <julliard at winehq.org>
Date:   Mon Nov 19 14:57:27 2007 +0100

libport: Work around Mac OS execve() breakage.

---

 libs/port/spawn.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/libs/port/spawn.c b/libs/port/spawn.c
index 832862c..490abb3 100644
--- a/libs/port/spawn.c
+++ b/libs/port/spawn.c
@@ -23,6 +23,7 @@
 
 #include <errno.h>
 #include <signal.h>
+#include <stdlib.h>
 #ifdef HAVE_SYS_WAIT_H
 #include <sys/wait.h>
 #endif
@@ -41,7 +42,8 @@ int spawnvp(int mode, const char *cmdname, const char *const argv[])
     if (mode == _P_OVERLAY)
     {
         execvp(cmdname, (char **)argv);
-        return -1;  /* if we get here it failed */
+        /* if we get here it failed */
+        if (errno != ENOTSUP) return -1;  /* exec fails on MacOS if the process has multiple threads */
     }
 
     dfl_act.sa_handler = SIG_DFL;
@@ -58,6 +60,8 @@ int spawnvp(int mode, const char *cmdname, const char *const argv[])
         _exit(1);
     }
 
+    if (pid != -1 && mode == _P_OVERLAY) exit(0);
+
     if (pid != -1 && mode == _P_WAIT)
     {
         while (pid != (wret = waitpid(pid, &status, 0)))