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

[gnulib.git] / m4 / frexpl.m4

diff --git a/m4/frexpl.m4 b/m4/frexpl.m4
index 63fcb1a..2e8c681 100644 (file)
--- a/m4/frexpl.m4
+++ b/m4/frexpl.m4
@@ -1,4 +1,4 @@
-# frexpl.m4 serial 14
+# frexpl.m4 serial 15
 dnl Copyright (C) 2007-2011 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -115,7 +115,11 @@ AC_DEFUN([gl_FUNC_FREXPL_WORKS],
 # undef LDBL_MIN_EXP
 # define LDBL_MIN_EXP    (-16381)
 #endif
-extern long double frexpl (long double, int *);
+extern
+#ifdef __cplusplus
+"C"
+#endif
+long double frexpl (long double, int *);
 int main()
 {
   int result = 0;