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build: Use AX_PROG_FLEX 

Tested-by: Andreas Boll <andreas.boll.dev@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=47248
This commit is contained in:
Matt Turner 2012-10-01 13:28:51 -07:00
parent b68b85224d
commit 2a71054396
2 changed files with 66 additions and 1 deletions
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4
configure.ac
View File

@ -59,7 +59,9 @@ LT_INIT([disable-static])
AX_PROG_BISON([],
AS_IF([test ! -f "$srcdir/src/glsl/glcpp/glcpp-parse.c"]
[AC_MSG_ERROR([bison not found - unable to compile glcpp-parse.y])]))
AC_PROG_LEX
AX_PROG_FLEX([],
AS_IF([test ! -f "$srcdir/src/glsl/glcpp/glcpp-lex.c"]
[AC_MSG_ERROR([flex not found - unable to compile glcpp-lex.l])]))
AC_PATH_PROG([PERL], [perl])

63
m4/ax_prog_flex.m4 Normal file
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@ -0,0 +1,63 @@
# ===========================================================================
# http://www.gnu.org/software/autoconf-archive/ax_prog_flex.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_PROG_FLEX(ACTION-IF-TRUE,ACTION-IF-FALSE)
#
# DESCRIPTION
#
# Check whether flex is the scanner 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 <http://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 9
# mattst88:
# Replaced m4_ifnblank(...) with m4_ifval(m4_normalize(...), ...)
# since m4_ifnblank requires autoconf-2.64.
AC_DEFUN([AX_PROG_FLEX], [
AC_REQUIRE([AM_PROG_LEX])
AC_REQUIRE([AC_PROG_EGREP])
AC_CACHE_CHECK([if flex is the lexer generator],[ax_cv_prog_flex],[
AS_IF([$LEX --version 2>/dev/null | $EGREP -q '^flex '],
[ax_cv_prog_flex=yes], [ax_cv_prog_flex=no])
])
AS_IF([test "$ax_cv_prog_flex" = "yes"],
m4_ifval(m4_normalize([$1]), [[$1]]),
m4_ifval(m4_normalize([$2]), [[$2]])
)
])