Improve autoconf's efficacy at detecting atomic ops.

diff --git a/configure.ac b/configure.ac
index 0d08e7de431ead64e6a6569fa5dbaaab8bd06226..9a3d4fdbef5dc69de669f44ea6cac297c31687d6 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -388,7 +388,7 @@ dnl
 dnl Check for atomic operations support in the compiler
 dnl
 AC_MSG_CHECKING([for atomic operations support])
-AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+AC_RUN_IFELSE([AC_LANG_PROGRAM([[
     int n = 0;
 ]],[[
     __sync_add_and_fetch(&n, 10); // n becomes 10