Fix undefined reference caused by wrong detection of gcc builtin atomic functions.

diff --git a/configure.in b/configure.in
index f0e4905..95f12da 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -850,7 +850,7 @@ AC_CHECK_SIZEOF([size_t])
 
 # Check for intrinsics
 AC_MSG_CHECKING([for __sync_add_and_fetch(temp, 1)])
-AC_TRY_COMPILE([],[long* temp=0; __sync_add_and_fetch(temp, 1);],
+AC_TRY_LINK([],[long* temp=0; long ret=__sync_add_and_fetch(temp, 1);],
                 [have_builtin_sync_add_and_fetch=yes],
                 [have_builtin_sync_add_and_fetch=no])
 AC_MSG_RESULT($have_builtin_sync_add_and_fetch)
@@ -860,7 +860,7 @@ if test "x$have_builtin_sync_add_and_fetch" = "xyes"; then
 fi
 
 AC_MSG_CHECKING([for __sync_sub_and_fetch(temp, 1)])
-AC_TRY_COMPILE([],[long* temp=0; __sync_sub_and_fetch(temp, 1);],
+AC_TRY_LINK([],[long* temp=0; long ret=__sync_sub_and_fetch(temp, 1);],
                 [have_builtin_sync_sub_and_fetch=yes],
                 [have_builtin_sync_sub_and_fetch=no])
 AC_MSG_RESULT($have_builtin_sync_sub_and_fetch)
@@ -870,7 +870,7 @@ if test "x$have_builtin_sync_sub_and_fetch" = "xyes"; then
 fi
 
 AC_MSG_CHECKING([for __sync_val_compare_and_swap(temp, 1, 1)])
-AC_TRY_COMPILE([],[long *temp = 0; __sync_val_compare_and_swap(temp, 1, 1);],
+AC_TRY_LINK([],[long *temp = 0; long ret=__sync_val_compare_and_swap(temp, 1, 1);],
                 [have_builtin_sync_val_compare_and_swap=yes],
                 [have_builtin_sync_val_compare_and_swap=no])
 AC_MSG_RESULT($have_builtin_sync_val_compare_and_swap)