1 files changed, 12 insertions, 8 deletions

diff --git a/m4/fdopendir.m4 b/m4/fdopendir.m4
index d9cc1a00173..9937a74ea8d 100644
--- a/m4/fdopendir.m4
+++ b/m4/fdopendir.m4
@@ -1,4 +1,4 @@
-# serial 12
+# serial 14
 # See if we need to provide fdopendir.
 
 dnl Copyright (C) 2009-2020 Free Software Foundation, Inc.
@@ -25,10 +25,12 @@ AC_DEFUN([gl_FUNC_FDOPENDIR],
   else
     AC_CACHE_CHECK([whether fdopendir works],
       [gl_cv_func_fdopendir_works],
-      [AC_RUN_IFELSE([AC_LANG_PROGRAM([[
+      [AC_RUN_IFELSE(
+         [AC_LANG_PROGRAM([[
 #include <dirent.h>
 #include <fcntl.h>
 #include <unistd.h>
+]GL_MDA_DEFINES[
 #if !HAVE_DECL_FDOPENDIR
 extern
 # ifdef __cplusplus
@@ -36,12 +38,14 @@ extern
 # endif
 DIR *fdopendir (int);
 #endif
-]], [int result = 0;
-     int fd = open ("conftest.c", O_RDONLY);
-     if (fd < 0) result |= 1;
-     if (fdopendir (fd)) result |= 2;
-     if (close (fd)) result |= 4;
-     return result;])],
+]],
+            [[int result = 0;
+              int fd = open ("conftest.c", O_RDONLY);
+              if (fd < 0) result |= 1;
+              if (fdopendir (fd)) result |= 2;
+              if (close (fd)) result |= 4;
+              return result;
+            ]])],
          [gl_cv_func_fdopendir_works=yes],
          [gl_cv_func_fdopendir_works=no],
          [case "$host_os" in