configure.ac: Depend addition of -pthread on host OS.

2006-07-05  Eric Christopher  <echristo@apple.com>

        * configure.ac: Depend addition of -pthread on host OS.
        * configure: Regenerate.

From-SVN: r115205

libgomp/ChangeLog

+2006-07-05  Eric Christopher  <echristo@apple.com>
+
+	* configure.ac: Depend addition of -pthread on host OS.
+	* configure: Regenerate.
+
 2006-06-21  Jakub Jelinek  <jakub@redhat.com>
 
 	* critical.c (GOMP_critical_name_start): Fix *pptr initialization

libgomp/configure

@@ -8296,7 +8296,8 @@ fi
 # Check to see if -pthread or -lpthread is needed.  Prefer the former.
 # In case the pthread.h system header is not found, this test will fail.
 XPCFLAGS=""
-CFLAGS="$CFLAGS -pthread"
+
+# Darwin doesn't need the -pthread option since threads are in libSystem
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
@@ -8335,7 +8336,13 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
+  case $host in
+   *-darwin*)
+     ;;
+   default)
      XPCFLAGS=" -Wc,-pthread"
+     ;;
+     esac
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5

libgomp/configure.ac

@@ -145,13 +145,20 @@ GCC_HEADER_STDINT(gstdint.h)
 # Check to see if -pthread or -lpthread is needed.  Prefer the former.
 # In case the pthread.h system header is not found, this test will fail.
 XPCFLAGS=""
-CFLAGS="$CFLAGS -pthread"
+
+# Darwin doesn't need the -pthread option since threads are in libSystem
 AC_LINK_IFELSE(
  [AC_LANG_PROGRAM(
   [#include <pthread.h>
    void *g(void *d) { return NULL; }],
   [pthread_t t; pthread_create(&t,NULL,g,NULL);])],
- [XPCFLAGS=" -Wc,-pthread"],
+ [case $host in
+   *-darwin*)
+     ;;
+   default)
+     XPCFLAGS=" -Wc,-pthread"
+     ;;
+     esac],
  [CFLAGS="$save_CFLAGS" LIBS="-lpthread $LIBS"
   AC_LINK_IFELSE(
    [AC_LANG_PROGRAM(