Building GNU tar from scratch failed because lib/getopt_int.h's declaration
of _getopt_internal specified a different signature from /usr/include/getopt.h
on my host (Debian GNU/Linux 3.1). I tracked it down to the fact that GNU
tar uses both argp and getopt, and argp was asking for the substitute
getopt.h but getopt then overrode the result. I installed this fix:
2005-08-16 Paul Eggert <[EMAIL PROTECTED]>
* getopt.m4 (gl_GETOPT_CHECK_HEADERS): Do not override the results
of gl_GETOPT_SUBSTITUTE. That way, if both gl_GETOPT_SUBSTITUTE
and gl_GETOPT are both invoked via different paths (as happens
with GNU tar CVS because it uses both argp and getopt), the former
wins.
--- getopt.m4.~1.11.~ 2005-07-26 14:55:31.000000000 -0700
+++ getopt.m4 2005-08-16 11:42:27.000000000 -0700
@@ -1,4 +1,4 @@
-# getopt.m4 serial 10
+# getopt.m4 serial 11
dnl Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@@ -27,8 +27,10 @@ AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER],
AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
[
- GETOPT_H=
- AC_CHECK_HEADERS([getopt.h], [], [GETOPT_H=getopt.h])
+ if test -z "$GETOPT_H"; then
+ AC_CHECK_HEADERS([getopt.h], [], [GETOPT_H=getopt.h])
+ fi
+
if test -z "$GETOPT_H"; then
AC_CHECK_FUNCS([getopt_long_only], [], [GETOPT_H=getopt.h])
fi
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