Declare system functions in a way that works with C++.

[gnulib.git] / m4 / fdopendir.m4

diff --git a/m4/fdopendir.m4 b/m4/fdopendir.m4
index 25dee3f..f0d8cfa 100644 (file)
--- a/m4/fdopendir.m4
+++ b/m4/fdopendir.m4
@@ -1,4 +1,4 @@
-# serial 7
+# serial 8
 # See if we need to provide fdopendir.
 
 dnl Copyright (C) 2009-2011 Free Software Foundation, Inc.
@@ -26,7 +26,11 @@ AC_DEFUN([gl_FUNC_FDOPENDIR],
 #include <fcntl.h>
 #include <unistd.h>
 #if !HAVE_DECL_FDOPENDIR
-extern DIR *fdopendir (int);
+extern
+# ifdef __cplusplus
+"C"
+# endif
+DIR *fdopendir (int);
 #endif
 ]], [int result = 0;
      int fd = open ("conftest.c", O_RDONLY);