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author | Joel E. Denny <jdenny@clemson.edu> | 2009-07-21 14:10:54 -0400 |
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committer | Joel E. Denny <jdenny@clemson.edu> | 2009-07-21 14:10:54 -0400 |
commit | 62eb2d1bd97793cb641c88776965d75ccc14e8e6 (patch) | |
tree | e4cad460dbfd9b740eaf5eba422d25a8ed6989a8 /m4 | |
parent | 620b2e3691598e057e24a7965fd268d0495cf9f5 (diff) | |
download | bison-62eb2d1bd97793cb641c88776965d75ccc14e8e6.tar.gz |
* m4/m4.m4: Make it a sym link to submodules/autoconf/m4/m4.m4.
Diffstat (limited to 'm4')
l---------[-rw-r--r--] | m4/m4.m4 | 47 |
1 files changed, 1 insertions, 46 deletions
@@ -1,46 +1 @@ -# m4.m4 serial 5 -dnl Copyright (C) 2000, 2006, 2007, 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. - -# AC_PROG_GNU_M4 -# -------------- -# Check for GNU M4, at least 1.4.5 (all earlier versions had a bug in -# trace support: -# http://lists.gnu.org/archive/html/bug-gnu-utils/2006-11/msg00096.html) -# Also, check whether --error-output (through 1.4.x) or --debugfile (2.0) -# is supported, and AC_SUBST M4_DEBUGFILE accordingly. -AC_DEFUN([AC_PROG_GNU_M4], - [AC_ARG_VAR([M4], [Location of GNU M4 1.4.5 or later. Defaults to the first - program of `m4', `gm4', or `gnum4' on PATH that meets Autoconf needs.]) - AC_CACHE_CHECK([for GNU M4 that supports accurate traces], [ac_cv_path_M4], - [rm -f conftest.m4f -AC_PATH_PROGS_FEATURE_CHECK([M4], [m4 gm4 gnum4], - [dnl Creative quoting here to avoid raw dnl and ifdef in configure. - # Root out GNU M4 1.4.4, as well as non-GNU m4 that ignore -t, -F. - ac_snippet=change'quote(<,>)in''dir(<if''def>,mac,bug)d'nl - test -z "`$ac_path_M4 -F conftest.m4f </dev/null 2>&1`" \ - && test -z "`echo $ac_snippet | $ac_path_M4 --trace=mac 2>&1`" \ - && test -f conftest.m4f \ - && ac_cv_path_M4=$ac_path_M4 ac_path_M4_found=: - rm -f conftest.m4f], - [AC_MSG_ERROR([no acceptable m4 could be found in \$PATH. -GNU M4 1.4.5 or later is required; 1.4.11 is recommended])])]) - M4=$ac_cv_path_M4 - AC_CACHE_CHECK([how m4 supports trace files], [ac_cv_prog_gnu_m4_debugfile], - [case `$M4 --help < /dev/null 2>&1` in - *debugfile*) ac_cv_prog_gnu_m4_debugfile=--debugfile ;; - *) ac_cv_prog_gnu_m4_debugfile=--error-output ;; - esac]) - AC_SUBST([M4_DEBUGFILE], [$ac_cv_prog_gnu_m4_debugfile]) -]) - -# Compatibility for bootstrapping with Autoconf 2.61. -dnl FIXME - replace this with AC_PREREQ([2.62]) after the release. -# AC_PATH_PROGS_FEATURE_CHECK was added the same time the slightly broken, -# undocumented _AC_PATH_PROG_FEATURE_CHECK was deleted. -m4_ifndef([AC_PATH_PROGS_FEATURE_CHECK], - [m4_define([AC_PATH_PROGS_FEATURE_CHECK], - [_AC_PATH_PROG_FEATURE_CHECK([$1], [$2], [$3], [$5]) -])]) +../submodules/autoconf/m4/m4.m4
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