lt~obsolete.m4 revision 1016ad83
11016ad83Smrg# lt~obsolete.m4 -- aclocal satisfying obsolete definitions. -*-Autoconf-*- 21016ad83Smrg# 31016ad83Smrg# Copyright (C) 2004, 2005, 2007, 2009 Free Software Foundation, Inc. 41016ad83Smrg# Written by Scott James Remnant, 2004. 51016ad83Smrg# 61016ad83Smrg# This file is free software; the Free Software Foundation gives 71016ad83Smrg# unlimited permission to copy and/or distribute it, with or without 81016ad83Smrg# modifications, as long as this notice is preserved. 91016ad83Smrg 101016ad83Smrg# serial 5 lt~obsolete.m4 111016ad83Smrg 121016ad83Smrg# These exist entirely to fool aclocal when bootstrapping libtool. 131016ad83Smrg# 141016ad83Smrg# In the past libtool.m4 has provided macros via AC_DEFUN (or AU_DEFUN) 151016ad83Smrg# which have later been changed to m4_define as they aren't part of the 161016ad83Smrg# exported API, or moved to Autoconf or Automake where they belong. 171016ad83Smrg# 181016ad83Smrg# The trouble is, aclocal is a bit thick. It'll see the old AC_DEFUN 191016ad83Smrg# in /usr/share/aclocal/libtool.m4 and remember it, then when it sees us 201016ad83Smrg# using a macro with the same name in our local m4/libtool.m4 it'll 211016ad83Smrg# pull the old libtool.m4 in (it doesn't see our shiny new m4_define 221016ad83Smrg# and doesn't know about Autoconf macros at all.) 231016ad83Smrg# 241016ad83Smrg# So we provide this file, which has a silly filename so it's always 251016ad83Smrg# included after everything else. This provides aclocal with the 261016ad83Smrg# AC_DEFUNs it wants, but when m4 processes it, it doesn't do anything 271016ad83Smrg# because those macros already exist, or will be overwritten later. 281016ad83Smrg# We use AC_DEFUN over AU_DEFUN for compatibility with aclocal-1.6. 291016ad83Smrg# 301016ad83Smrg# Anytime we withdraw an AC_DEFUN or AU_DEFUN, remember to add it here. 311016ad83Smrg# Yes, that means every name once taken will need to remain here until 321016ad83Smrg# we give up compatibility with versions before 1.7, at which point 331016ad83Smrg# we need to keep only those names which we still refer to. 341016ad83Smrg 351016ad83Smrg# This is to help aclocal find these macros, as it can't see m4_define. 361016ad83SmrgAC_DEFUN([LTOBSOLETE_VERSION], [m4_if([1])]) 371016ad83Smrg 381016ad83Smrgm4_ifndef([AC_LIBTOOL_LINKER_OPTION], [AC_DEFUN([AC_LIBTOOL_LINKER_OPTION])]) 391016ad83Smrgm4_ifndef([AC_PROG_EGREP], [AC_DEFUN([AC_PROG_EGREP])]) 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