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Switch AC_PROG_YACC to AX_PROG_BISON

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AC_PROG_YACC is kinda buggy. Switch to AX_PROG_BISON from
autoconf-archive.

Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>
This commit is contained in:
Bryan Hundven 2022-10-23 13:12:13 -07:00 committed by Chris Packham
parent 658f5e574f
commit 52e2879584
2 changed files with 65 additions and 1 deletions
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2
configure.ac
View File

@ -94,7 +94,7 @@ AM_PROG_CC_C_O
AC_PROG_CXX
AC_PROG_CPP
AC_PROG_LEX([noyywrap])
AC_PROG_YACC
AX_PROG_BISON
AS_IF([test -z "$CC" -o -z "$CXX"],
[AC_MSG_ERROR([no suitable compiler found])])

64
m4/ax_prog_bison.m4 Normal file
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@ -0,0 +1,64 @@
# ===========================================================================
# https://www.gnu.org/software/autoconf-archive/ax_prog_bison.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_PROG_BISON(ACTION-IF-TRUE,ACTION-IF-FALSE)
#
# DESCRIPTION
#
# Check whether bison is the parser generator. Run ACTION-IF-TRUE if
# successful, ACTION-IF-FALSE otherwise
#
# LICENSE
#
# Copyright (c) 2009 Francesco Salvestrini <salvestrini@users.sourceforge.net>
# Copyright (c) 2010 Diego Elio Petteno` <flameeyes@gmail.com>
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2 of the License, or (at your
# option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program. If not, see <https://www.gnu.org/licenses/>.
#
# As a special exception, the respective Autoconf Macro's copyright owner
# gives unlimited permission to copy, distribute and modify the configure
# scripts that are the output of Autoconf when processing the Macro. You
# need not follow the terms of the GNU General Public License when using
# or distributing such scripts, even though portions of the text of the
# Macro appear in them. The GNU General Public License (GPL) does govern
# all other use of the material that constitutes the Autoconf Macro.
#
# This special exception to the GPL applies to versions of the Autoconf
# Macro released by the Autoconf Archive. When you make and distribute a
# modified version of the Autoconf Macro, you may extend this special
# exception to the GPL to apply to your modified version as well.
#serial 10
AC_DEFUN([AX_PROG_BISON], [
AC_REQUIRE([AC_PROG_YACC])
AC_REQUIRE([AC_PROG_EGREP])
AC_CACHE_CHECK([if bison is the parser generator],[ax_cv_prog_bison],[
AS_IF([$YACC --version 2>/dev/null | $EGREP -q '^bison '],
[ax_cv_prog_bison=yes], [ax_cv_prog_bison=no])
])
AS_IF([test "$ax_cv_prog_bison" = "yes"], [
dnl replace the yacc-compatible compiler with the real bison, as
dnl otherwise autoconf limits us to the POSIX yacc.
dnl We also change the generated filename to the old one, so that
dnl automake's ylwrap can deal with it.
YACC="${YACC% -y} -o y.tab.c"
] m4_ifnblank([$1], [[$1]]),
m4_ifnblank([$2], [[$2]])
)
])