1 files changed, 3 insertions, 2 deletions
diff --git a/acinclude.m4 b/acinclude.m4
index 48c145f459..a96f0455f8 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -1373,12 +1373,13 @@ main() {
     ],[
       ac_cv_what_readdir_r=POSIX
     ],[
-      AC_TRY_CPP([
+      AC_PREPROC_IFELSE([
+        AC_LANG_SOURCE([[
 #define _REENTRANT
 #include <sys/types.h>
 #include <dirent.h>
 int readdir_r(DIR *, struct dirent *);
-        ],[
+        ]])],[
           ac_cv_what_readdir_r=old-style
         ],[
           ac_cv_what_readdir_r=none