* aclocal.m4 (GROFF_MKSTEMP): Implement test using C++ linkage.

* configure: Regenerated.
* win32-diffs: Updated.
* tmac/groff_mwww.tmac: Renamed to ...
* tmac/groff_www.tmac: This.
* tmac/mwww.tmac: Removed.
* NEWS, tmac/Makefile.sub: Updated.
* doc/groff.texinfo: Improve documentation of the `\v' escape.
Fix explanation of `\D' and `rt'.

1 files changed, 8 insertions, 5 deletions

diff --git a/aclocal.m4 b/aclocal.m4
index bf4308db..6f36ca89 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -504,12 +504,15 @@ dnl
 dnl If mkstemp() isn't available, use our own mkstemp.cc file.
 dnl
 AC_DEFUN(GROFF_MKSTEMP,
-[AC_LANG_PUSH(C++)
+[AC_MSG_CHECKING([for mkstemp])
+AC_LANG_PUSH(C++)
 AC_LIBSOURCE(mkstemp.cc)
-AC_CHECK_FUNC(mkstemp,
-	      [AC_DEFINE(HAVE_MKSTEMP, 1,
-			 [Define if you have mkstemp().])],
-	      [_AC_LIBOBJ(mkstemp)])
+AC_TRY_LINK([#include <stdlib.h>
+int (*f) (char *);],
+[f = mkstemp;],
+AC_MSG_RESULT(yes);AC_DEFINE(HAVE_MKSTEMP, 1,
+			     [Define if you have mkstemp().]),
+AC_MSG_RESULT(no);_AC_LIBOBJ(mkstemp))
 AC_LANG_POP(C++)])dnl
 dnl
 dnl