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authorLasse Collin <lasse.collin@tukaani.org>2008-11-19 20:46:52 +0200
committerLasse Collin <lasse.collin@tukaani.org>2008-11-19 20:46:52 +0200
commite114502b2bc371e4a45449832cb69be036360722 (patch)
tree449c41d0408f99926de202611091747f1fbe2f85 /m4/getopt.m4
parentFixed the test that should have been fixed as part (diff)
downloadxz-e114502b2bc371e4a45449832cb69be036360722.tar.xz
Oh well, big messy commit again. Some highlights:
- Updated to the latest, probably final file format version. - Command line tool reworked to not use threads anymore. Threading will probably go into liblzma anyway. - Memory usage limit is now about 30 % for uncompression and about 90 % for compression. - Progress indicator with --verbose - Simplified --help and full --long-help - Upgraded to the last LGPLv2.1+ getopt_long from gnulib. - Some bug fixes
Diffstat (limited to 'm4/getopt.m4')
-rw-r--r--m4/getopt.m464
1 files changed, 24 insertions, 40 deletions
diff --git a/m4/getopt.m4 b/m4/getopt.m4
index c0a73b2c..ffba95e2 100644
--- a/m4/getopt.m4
+++ b/m4/getopt.m4
@@ -1,5 +1,5 @@
-# getopt.m4 serial 13
-dnl Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+# getopt.m4 serial 14 (modified version)
+dnl Copyright (C) 2002-2006, 2008 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.
@@ -13,7 +13,6 @@ AC_DEFUN([gl_GETOPT_SUBSTITUTE],
AC_LIBOBJ([getopt])
AC_LIBOBJ([getopt1])
gl_GETOPT_SUBSTITUTE_HEADER
- gl_PREREQ_GETOPT
])
AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER],
@@ -31,41 +30,32 @@ AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
AC_CHECK_HEADERS([getopt.h], [], [GETOPT_H=getopt.h])
fi
+ dnl BSD getopt_long uses a way to reset option processing, that is different
+ dnl from GNU and Solaris (which copied the GNU behavior). We support both
+ dnl GNU and BSD style resetting of getopt_long(), so there's no need to use
+ dnl GNU getopt_long() on BSD due to different resetting style.
+ dnl
+ dnl With getopt_long(), some BSD versions have a bug in handling optional
+ dnl arguments. This bug appears only if the environment variable
+ dnl POSIXLY_CORRECT has been set, so it shouldn't be too bad in most
+ dnl cases; probably most don't have that variable set. But if we actually
+ dnl hit this bug, it is a real problem due to our heavy use of optional
+ dnl arguments.
+ dnl
+ dnl According to CVS logs, the bug was introduced in OpenBSD in 2003-09-22
+ dnl and copied to FreeBSD in 2004-02-24. It was fixed in both in 2006-09-22,
+ dnl so the affected versions shouldn't be popular anymore anyway. NetBSD
+ dnl never had this bug. TODO: What about Darwin and others?
if test -z "$GETOPT_H"; then
- AC_CHECK_FUNCS([getopt_long_only], [], [GETOPT_H=getopt.h])
- fi
-
- dnl BSD getopt_long uses an incompatible method to reset option processing,
- dnl and (as of 2004-10-15) mishandles optional option-arguments.
- if test -z "$GETOPT_H"; then
- AC_CHECK_DECL([optreset], [GETOPT_H=getopt.h], [], [#include <getopt.h>])
+ AC_CHECK_DECL([optreset],
+ [AC_DEFINE([HAVE_OPTRESET], 1,
+ [Define to 1 if getopt.h declares extern int optreset.])],
+ [], [#include <getopt.h>])
fi
dnl Solaris 10 getopt doesn't handle `+' as a leading character in an
- dnl option string (as of 2005-05-05).
- if test -z "$GETOPT_H"; then
- AC_CACHE_CHECK([for working GNU getopt function], [gl_cv_func_gnu_getopt],
- [AC_RUN_IFELSE(
- [AC_LANG_PROGRAM([#include <getopt.h>],
- [[
- char *myargv[3];
- myargv[0] = "conftest";
- myargv[1] = "-+";
- myargv[2] = 0;
- return getopt (2, myargv, "+a") != '?';
- ]])],
- [gl_cv_func_gnu_getopt=yes],
- [gl_cv_func_gnu_getopt=no],
- [dnl cross compiling - pessimistically guess based on decls
- dnl Solaris 10 getopt doesn't handle `+' as a leading character in an
- dnl option string (as of 2005-05-05).
- AC_CHECK_DECL([getopt_clip],
- [gl_cv_func_gnu_getopt=no], [gl_cv_func_gnu_getopt=yes],
- [#include <getopt.h>])])])
- if test "$gl_cv_func_gnu_getopt" = "no"; then
- GETOPT_H=getopt.h
- fi
- fi
+ dnl option string (as of 2005-05-05). We don't use that feature, so this
+ dnl is not a problem for us. Thus, the respective test was removed here.
])
AC_DEFUN([gl_GETOPT_IFELSE],
@@ -75,9 +65,3 @@ AC_DEFUN([gl_GETOPT_IFELSE],
])
AC_DEFUN([gl_GETOPT], [gl_GETOPT_IFELSE([gl_GETOPT_SUBSTITUTE])])
-
-# Prerequisites of lib/getopt*.
-AC_DEFUN([gl_PREREQ_GETOPT],
-[
- AC_CHECK_DECLS_ONCE([getenv])
-])