lt~obsolete.m4 revision b9526c6a
11016ad83Smrg# lt~obsolete.m4 -- aclocal satisfying obsolete definitions. -*-Autoconf-*- 21016ad83Smrg# 3b9526c6aSmrg# Copyright (C) 2004-2005, 2007, 2009, 2011-2019, 2021-2022 Free 4b9526c6aSmrg# Software Foundation, Inc. 51016ad83Smrg# Written by Scott James Remnant, 2004. 61016ad83Smrg# 71016ad83Smrg# This file is free software; the Free Software Foundation gives 81016ad83Smrg# unlimited permission to copy and/or distribute it, with or without 91016ad83Smrg# modifications, as long as this notice is preserved. 101016ad83Smrg 111016ad83Smrg# serial 5 lt~obsolete.m4 121016ad83Smrg 131016ad83Smrg# These exist entirely to fool aclocal when bootstrapping libtool. 141016ad83Smrg# 157204935cSmrg# In the past libtool.m4 has provided macros via AC_DEFUN (or AU_DEFUN), 161016ad83Smrg# which have later been changed to m4_define as they aren't part of the 171016ad83Smrg# exported API, or moved to Autoconf or Automake where they belong. 181016ad83Smrg# 191016ad83Smrg# The trouble is, aclocal is a bit thick. It'll see the old AC_DEFUN 201016ad83Smrg# in /usr/share/aclocal/libtool.m4 and remember it, then when it sees us 211016ad83Smrg# using a macro with the same name in our local m4/libtool.m4 it'll 221016ad83Smrg# pull the old libtool.m4 in (it doesn't see our shiny new m4_define 231016ad83Smrg# and doesn't know about Autoconf macros at all.) 241016ad83Smrg# 251016ad83Smrg# So we provide this file, which has a silly filename so it's always 261016ad83Smrg# included after everything else. This provides aclocal with the 271016ad83Smrg# AC_DEFUNs it wants, but when m4 processes it, it doesn't do anything 281016ad83Smrg# because those macros already exist, or will be overwritten later. 297204935cSmrg# We use AC_DEFUN over AU_DEFUN for compatibility with aclocal-1.6. 301016ad83Smrg# 311016ad83Smrg# Anytime we withdraw an AC_DEFUN or AU_DEFUN, remember to add it here. 321016ad83Smrg# Yes, that means every name once taken will need to remain here until 331016ad83Smrg# we give up compatibility with versions before 1.7, at which point 341016ad83Smrg# we need to keep only those names which we still refer to. 351016ad83Smrg 361016ad83Smrg# This is to help aclocal find these macros, as it can't see m4_define. 371016ad83SmrgAC_DEFUN([LTOBSOLETE_VERSION], [m4_if([1])]) 381016ad83Smrg 391016ad83Smrgm4_ifndef([AC_LIBTOOL_LINKER_OPTION], [AC_DEFUN([AC_LIBTOOL_LINKER_OPTION])]) 401016ad83Smrgm4_ifndef([AC_PROG_EGREP], [AC_DEFUN([AC_PROG_EGREP])]) 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