mirror/autoconf
2
0
Fork 0
mirror of git://git.sv.gnu.org/autoconf synced 2025-03-01 14:16:02 +08:00
Code Issues Packages Projects Releases Wiki Activity

* doc/autoconf.texi (C Compiler): Warn that AC_C_BIGENDIAN

Browse Source 
suggests AC_CONFIG_HEADERS.
* lib/autoconf/c.m4 (AC_C_BIGENDIAN): Warn if not using
AC_CONFIG_HEADERS.  Problem reported by
Peter O'Gorman.
This commit is contained in:
Paul Eggert 2007-03-06 07:30:17 +00:00
parent 3b878cdaef
commit e3c6e14afc
3 changed files with 25 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
ChangeLog
View File

@ -1,3 +1,11 @@
2007-03-05 Paul Eggert <eggert@cs.ucla.edu>
* doc/autoconf.texi (C Compiler): Warn that AC_C_BIGENDIAN
suggests AC_CONFIG_HEADERS.
* lib/autoconf/c.m4 (AC_C_BIGENDIAN): Warn if not using
AC_CONFIG_HEADERS. Problem reported by
Peter O'Gorman.
2007-02-28 Paul Eggert <eggert@cs.ucla.edu>
* lib/autoconf/c.m4 (AC_C_BIGENDIAN): Fix typo "__LITLE_ENDIAN__".

5
doc/autoconf.texi
View File

@ -6486,6 +6486,11 @@ abort configure and tell the installer how to bypass this test.
And finally, the default for @var{action-if-universal} is to define
@samp{WORDS_BIGENDIAN} or not, depending on the architecture that the
code is being generated for.
If you use this macro without specifying @var{action-if-universal}, you
should also use @code{AC_CONFIG_HEADERS}; otherwise
@samp{WORDS_BIGENDIAN} may be set incorrectly for Mac OS X universal
binary files.
@end defmac
@defmac AC_C_CONST

22
lib/autoconf/c.m4
View File

@ -1,6 +1,6 @@
# This file is part of Autoconf. -*- Autoconf -*-
# Programming languages support.
# Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006 Free Software
# Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software
# Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify
@ -1381,15 +1381,17 @@ AC_DEFUN([AC_C_BIGENDIAN],
#endif])dnl
AC_CACHE_CHECK([whether byte ordering is bigendian], [ac_cv_c_bigendian],
[ac_cv_c_bigendian=unknown
# See if __BIG_ENDIAN__ or __LITTLE_ENDIAN__ is defined.
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE(
[[#if ! (defined __BIG_ENDIAN__ || defined __LITTLE_ENDIAN__)
neither is defined;
#endif
typedef int dummy;
]])],
[ac_cv_c_bigendian=universal])
m4_ifval(m4_ifdef([AH_HEADER], 1)[$4],
[# See if __BIG_ENDIAN__ or __LITTLE_ENDIAN__ is defined.
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE(
[[#if ! (defined __BIG_ENDIAN__ || defined __LITTLE_ENDIAN__)
neither is defined;
#endif
typedef int dummy;
]])],
[ac_cv_c_bigendian=universal])],
[AC_DIAGNOSE([obsolete], [AC_C_BIGENDIAN suggests AC_CONFIG_HEADERS])])
if test $ac_cv_c_bigendian = unknown; then
# See if sys/param.h defines the BYTE_ORDER macro.
AC_COMPILE_IFELSE(