1a7e741d5Smrg# lt~obsolete.m4 -- aclocal satisfying obsolete definitions. -*-Autoconf-*- 2a7e741d5Smrg# 3a7e741d5Smrg# Copyright (C) 2004-2005, 2007, 2009, 2011-2019, 2021-2022 Free 4a7e741d5Smrg# Software Foundation, Inc. 5a7e741d5Smrg# Written by Scott James Remnant, 2004. 6a7e741d5Smrg# 7a7e741d5Smrg# This file is free software; the Free Software Foundation gives 8a7e741d5Smrg# unlimited permission to copy and/or distribute it, with or without 9a7e741d5Smrg# modifications, as long as this notice is preserved. 10a7e741d5Smrg 11a7e741d5Smrg# serial 5 lt~obsolete.m4 12a7e741d5Smrg 13a7e741d5Smrg# These exist entirely to fool aclocal when bootstrapping libtool. 14a7e741d5Smrg# 15a7e741d5Smrg# In the past libtool.m4 has provided macros via AC_DEFUN (or AU_DEFUN), 16a7e741d5Smrg# which have later been changed to m4_define as they aren't part of the 17a7e741d5Smrg# exported API, or moved to Autoconf or Automake where they belong. 18a7e741d5Smrg# 19a7e741d5Smrg# The trouble is, aclocal is a bit thick. It'll see the old AC_DEFUN 20a7e741d5Smrg# in /usr/share/aclocal/libtool.m4 and remember it, then when it sees us 21a7e741d5Smrg# using a macro with the same name in our local m4/libtool.m4 it'll 22a7e741d5Smrg# pull the old libtool.m4 in (it doesn't see our shiny new m4_define 23a7e741d5Smrg# and doesn't know about Autoconf macros at all.) 24a7e741d5Smrg# 25a7e741d5Smrg# So we provide this file, which has a silly filename so it's always 26a7e741d5Smrg# included after everything else. This provides aclocal with the 27a7e741d5Smrg# AC_DEFUNs it wants, but when m4 processes it, it doesn't do anything 28a7e741d5Smrg# because those macros already exist, or will be overwritten later. 29a7e741d5Smrg# We use AC_DEFUN over AU_DEFUN for compatibility with aclocal-1.6. 30a7e741d5Smrg# 31a7e741d5Smrg# Anytime we withdraw an AC_DEFUN or AU_DEFUN, remember to add it here. 32a7e741d5Smrg# Yes, that means every name once taken will need to remain here until 33a7e741d5Smrg# we give up compatibility with versions before 1.7, at which point 34a7e741d5Smrg# we need to keep only those names which we still refer to. 35a7e741d5Smrg 36a7e741d5Smrg# This is to help aclocal find these macros, as it can't see m4_define. 37a7e741d5SmrgAC_DEFUN([LTOBSOLETE_VERSION], [m4_if([1])]) 38a7e741d5Smrg 39a7e741d5Smrgm4_ifndef([AC_LIBTOOL_LINKER_OPTION], [AC_DEFUN([AC_LIBTOOL_LINKER_OPTION])]) 40a7e741d5Smrgm4_ifndef([AC_PROG_EGREP], [AC_DEFUN([AC_PROG_EGREP])]) 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