merge from gcc

libiberty/ChangeLog

@@ -1,3 +1,11 @@
+2010-11-20  Anthony Green  <green@moxielogic.com>
+
+	* configure.ac: Turn PR_SET_NAME link test into a test for
+	sys/prctl.h.
+	* configure, config.in: Rebuilt.
+	* setproctitle.c: Test for HAVE_SYS_PRCTL_H.
+	(setproctitle) Test for PR_SET_NAME definition.
+
 2010-11-20  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
 
 	PR other/46202

libiberty/config.in

@@ -169,9 +169,6 @@
 /* Define to 1 if you have the `on_exit' function. */
 #undef HAVE_ON_EXIT
 
-/* Define if you have prctl PR_SET_NAME */
-#undef HAVE_PRCTL_SET_NAME
-
 /* Define to 1 if you have the <process.h> header file. */
 #undef HAVE_PROCESS_H
 
@@ -304,6 +301,9 @@
 /* Define to 1 if you have the <sys/param.h> header file. */
 #undef HAVE_SYS_PARAM_H
 
+/* Define to 1 if you have the <sys/prctl.h> header file. */
+#undef HAVE_SYS_PRCTL_H
+
 /* Define to 1 if you have the <sys/pstat.h> header file. */
 #undef HAVE_SYS_PSTAT_H
 

libiberty/configure

@@ -4895,7 +4895,7 @@ host_makefile_frag=${frag}
 # It's OK to check for header files.  Although the compiler may not be
 # able to link anything, it had better be able to at least compile
 # something.
-for ac_header in sys/file.h sys/param.h limits.h stdlib.h malloc.h string.h unistd.h strings.h sys/time.h time.h sys/resource.h sys/stat.h sys/mman.h fcntl.h alloca.h sys/pstat.h sys/sysmp.h sys/sysinfo.h machine/hal_sysinfo.h sys/table.h sys/sysctl.h sys/systemcfg.h stdint.h stdio_ext.h process.h
+for ac_header in sys/file.h sys/param.h limits.h stdlib.h malloc.h string.h unistd.h strings.h sys/time.h time.h sys/resource.h sys/stat.h sys/mman.h fcntl.h alloca.h sys/pstat.h sys/sysmp.h sys/sysinfo.h machine/hal_sysinfo.h sys/table.h sys/sysctl.h sys/systemcfg.h stdint.h stdio_ext.h process.h sys/prctl.h
 do :
   as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
 ac_fn_c_check_header_preproc "$LINENO" "$ac_header" "$as_ac_Header"
@@ -5719,28 +5719,6 @@ fi
 
 
 
-# check for prctl PR_SET_NAME
-if test x$gcc_no_link = xyes; then
-  as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
-fi
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-#include <sys/prctl.h>
-int main()
-{
-  return (prctl(PR_SET_NAME, "foo") == 0) ? 0 : 1;
-}
-
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-
-$as_echo "#define HAVE_PRCTL_SET_NAME 1" >>confdefs.h
-
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-
 case "${host}" in
   *-*-cygwin* | *-*-mingw*)
     $as_echo "#define HAVE_SYS_ERRLIST 1" >>confdefs.h

libiberty/configure.ac

@@ -246,7 +246,7 @@ AC_SUBST_FILE(host_makefile_frag)
 # It's OK to check for header files.  Although the compiler may not be
 # able to link anything, it had better be able to at least compile
 # something.
-AC_CHECK_HEADERS(sys/file.h sys/param.h limits.h stdlib.h malloc.h string.h unistd.h strings.h sys/time.h time.h sys/resource.h sys/stat.h sys/mman.h fcntl.h alloca.h sys/pstat.h sys/sysmp.h sys/sysinfo.h machine/hal_sysinfo.h sys/table.h sys/sysctl.h sys/systemcfg.h stdint.h stdio_ext.h process.h)
+AC_CHECK_HEADERS(sys/file.h sys/param.h limits.h stdlib.h malloc.h string.h unistd.h strings.h sys/time.h time.h sys/resource.h sys/stat.h sys/mman.h fcntl.h alloca.h sys/pstat.h sys/sysmp.h sys/sysinfo.h machine/hal_sysinfo.h sys/table.h sys/sysctl.h sys/systemcfg.h stdint.h stdio_ext.h process.h sys/prctl.h)
 AC_HEADER_SYS_WAIT
 AC_HEADER_TIME
 
@@ -538,16 +538,6 @@ fi
 AC_SUBST(CHECK)
 AC_SUBST(target_header_dir)
 
-# check for prctl PR_SET_NAME
-AC_LINK_IFELSE([AC_LANG_SOURCE([[
-#include <sys/prctl.h>
-int main()
-{
-  return (prctl(PR_SET_NAME, "foo") == 0) ? 0 : 1;
-}
-]])], AC_DEFINE(HAVE_PRCTL_SET_NAME, 1,
-	[Define if you have prctl PR_SET_NAME]))
-
 case "${host}" in
   *-*-cygwin* | *-*-mingw*)
     AC_DEFINE(HAVE_SYS_ERRLIST)

libiberty/setproctitle.c

@@ -20,7 +20,7 @@ Boston, MA 02110-1301, USA.  */
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
-#ifdef HAVE_PRCTL_SET_NAME
+#ifdef HAVE_SYS_PRCTL_H
 #include <sys/prctl.h>
 #endif
 #include "ansidecl.h"
@@ -39,7 +39,7 @@ but defined for compatibility with BSD.
 void
 setproctitle (const char *name ATTRIBUTE_UNUSED, ...)
 {
-#ifdef HAVE_PRCTL_SET_NAME
+#ifdef PR_SET_NAME
   /* On Linux this sets the top visible "comm", but not necessarily
      the name visible in ps. */
   prctl (PR_SET_NAME, name);