Joachim Schmitz wrote:
> Good question. In config.h I can only see:
>
> #define HOST_NAME_MAX
>
> So it gets #define'd but with no value
> ...
> Possibly because it does not #include <arpa/nameser.h>
<arpa/nameser.h> is such a rarely included header file that we can ignore
it here, and simply use a fallback of 256 (which is the maximum value of
MAXHOSTNAMELEN on any platform). I'm applying this:
2010-12-24 Bruno Haible <br...@clisp.org>
gethostname: Provide a fallback for HOST_NAME_MAX.
* m4/gethostname.m4 (gl_FUNC_GETHOSTNAME): When neither HOST_NAME_MAX
nor MAXHOSTNAMELEN is found in the usual system headers, use 256
instead.
Reported by Joachim Schmitz <j...@schmitz-digital.de>.
--- m4/gethostname.m4.orig Fri Dec 24 13:51:48 2010
+++ m4/gethostname.m4 Fri Dec 24 13:50:52 2010
@@ -1,5 +1,5 @@
-# gethostname.m4 serial 9
-dnl Copyright (C) 2002, 2008, 2009, 2010 Free Software Foundation, Inc.
+# gethostname.m4 serial 10
+dnl Copyright (C) 2002, 2008-2010 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
@@ -83,7 +83,11 @@
#if HAVE_NETDB_H
# include <netdb.h>
#endif
-])
+],
+ [dnl The system does not define MAXHOSTNAMELEN in any of the common
+ dnl headers. Use a safe fallback.
+ gl_cv_decl_HOST_NAME_MAX=256
+ ])
fi
fi
])
