From e3cc64dec20832769406aa38cde83c7dd4194bf4 Mon Sep 17 00:00:00 2001
From: Ben Cheng <bccheng@google.com>
Date: Tue, 22 Apr 2014 13:33:12 -0700
Subject: [4.9] GCC 4.9.0 official release refresh

Change-Id: Ic99a7da8b44b789a48aeec93b33e93944d6e6767
---
 gcc-4.9/libcilkrts/configure | 58 +++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 55 insertions(+), 3 deletions(-)

(limited to 'gcc-4.9/libcilkrts/configure')

diff --git a/gcc-4.9/libcilkrts/configure b/gcc-4.9/libcilkrts/configure
index 63181d78b..0dadbbda0 100644
--- a/gcc-4.9/libcilkrts/configure
+++ b/gcc-4.9/libcilkrts/configure
@@ -604,6 +604,7 @@ ac_subst_vars='am__EXEEXT_FALSE
 am__EXEEXT_TRUE
 LTLIBOBJS
 LIBOBJS
+link_cilkrts
 lt_cv_dlopen_libs
 toolexeclibdir
 toolexecdir
@@ -4214,7 +4215,7 @@ fi
 
 # AC_PROG_LIBTOOL
 # AC_CONFIG_MACRO_DIR([..])
-ac_config_files="$ac_config_files Makefile"
+ac_config_files="$ac_config_files Makefile libcilkrts.spec"
 
 # Default to --enable-multilib
 # Check whether --enable-multilib was given.
@@ -11056,7 +11057,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11059 "configure"
+#line 11060 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11162,7 +11163,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11165 "configure"
+#line 11166 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -14451,6 +14452,56 @@ fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext conftest.$ac_ext
 
+# Check to see if -pthread or -lpthread is needed.  Prefer the former.
+# Note that the CILK_SELF_SPEC in gcc.c may force -pthread.
+# In case the pthread.h system header is not found, this test will fail.
+CFLAGS="$CFLAGS -pthread"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <pthread.h>
+   void *g(void *d) { return NULL; }
+int
+main ()
+{
+pthread_t t; pthread_create(&t,NULL,g,NULL);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+
+else
+  CFLAGS="$save_CFLAGS" LIBS="-lpthread $LIBS"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <pthread.h>
+     void *g(void *d) { return NULL; }
+int
+main ()
+{
+pthread_t t; pthread_create(&t,NULL,g,NULL);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+
+else
+  as_fn_error "Pthreads are required to build libcilkrts" "$LINENO" 5
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+
+if test $enable_shared = yes; then
+  link_cilkrts="-lcilkrts %{static: $LIBS}"
+else
+  link_cilkrts="-lcilkrts $LIBS"
+fi
+
+
 
 # Must be last
 cat >confcache <<\_ACEOF
@@ -15567,6 +15618,7 @@ do
   case $ac_config_target in
     "depfiles") CONFIG_COMMANDS="$CONFIG_COMMANDS depfiles" ;;
     "Makefile") CONFIG_FILES="$CONFIG_FILES Makefile" ;;
+    "libcilkrts.spec") CONFIG_FILES="$CONFIG_FILES libcilkrts.spec" ;;
     "default-1") CONFIG_COMMANDS="$CONFIG_COMMANDS default-1" ;;
     "libtool") CONFIG_COMMANDS="$CONFIG_COMMANDS libtool" ;;
 
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