* config/sparc/sparc-opts.h: New.

[pf3gnuchains/gcc-fork.git] / libgo / configure.ac

diff --git a/libgo/configure.ac b/libgo/configure.ac
index 1c75b3e..2ec9f5c 100644 (file)
--- a/libgo/configure.ac
+++ b/libgo/configure.ac
@@ -152,7 +152,7 @@ case ${host} in
 changequote(,)dnl
   i[34567]86-*-* | x86_64-*-*)
 changequote([,])dnl
-    AC_PREPROC_IFELSE([
+    AC_COMPILE_IFELSE([
 #ifdef __x86_64__
 #error 64-bit
 #endif],
@@ -168,7 +168,7 @@ changequote([,])dnl
     GOARCH=m68k
     ;;
   mips*-*-*)
-    AC_PREPROC_IFELSE([
+    AC_COMPILE_IFELSE([
 #ifdef __mips64
 #error 64-bit
 #endif],
@@ -180,7 +180,7 @@ changequote([,])dnl
     fi
     ;;
   rs6000*-*-* | powerpc*-*-*)
-    AC_PREPROC_IFELSE([
+    AC_COMPILE_IFELSE([
 #ifdef _ARCH_PPC64
 #error 64-bit
 #endif],
@@ -192,7 +192,7 @@ changequote([,])dnl
     fi
     ;;
   sparc*-*-*)
-    AC_PREPROC_IFELSE([
+    AC_COMPILE_IFELSE([
 #if defined(__sparcv9) || defined(__arch64__)
 #error 64-bit
 #endif],
@@ -378,7 +378,7 @@ no)
   ;;
 esac
 
-AC_CHECK_HEADERS(sys/mman.h syscall.h sys/epoll.h sys/ptrace.h sys/user.h sys/utsname.h)
+AC_CHECK_HEADERS(sys/mman.h syscall.h sys/epoll.h sys/ptrace.h sys/syscall.h sys/user.h sys/utsname.h)
 AM_CONDITIONAL(HAVE_SYS_MMAN_H, test "$ac_cv_header_sys_mman_h" = yes)
 AC_CHECK_FUNCS(srandom random strsignal)
 
@@ -396,6 +396,20 @@ if test "$libgo_cv_func___sync_bool_compare_and_swap_4" = "yes"; then
     [Define to 1 if the compiler provides the __sync_bool_compare_and_swap function for uint32])
 fi
 
+AC_CACHE_CHECK([for __sync_fetch_and_add_4],
+[libgo_cv_func___sync_fetch_and_add_4],
+[AC_LINK_IFELSE([
+typedef unsigned int uint32  __attribute__ ((mode (SI)));
+uint32 i;
+int main() { return __sync_fetch_and_add (&i, 1); }
+],
+[libgo_cv_func___sync_fetch_and_add_4=yes],
+[libgo_cv_func___sync_fetch_and_add_4=no])])
+if test "$libgo_cv_func___sync_fetch_and_add_4" = "yes"; then
+  AC_DEFINE(HAVE_SYNC_FETCH_AND_ADD_4, 1,
+    [Define to 1 if the compiler provides the __sync_fetch_and_add function for uint32])
+fi
+
 dnl For x86 we want to use the -minline-all-stringops option to avoid
 dnl forcing a stack split when calling memcpy and friends.
 AC_CACHE_CHECK([whether compiler supports -minline-all-stringops],