remove since it didnt help
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@18816 ec53bebd-3082-4978-b11e-865c3cabbd6b
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149
cf/check-lex.m4
149
cf/check-lex.m4
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#
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# XXX remove this when we get autoconf 2.61
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#
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# This file is part of Autoconf. -*- Autoconf -*-
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# Checking for programs.
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# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
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# 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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# As a special exception, the Free Software Foundation gives unlimited
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# permission to copy, distribute and modify the configure scripts that
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# are the output of Autoconf. You need not follow the terms of the GNU
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# General Public License when using or distributing such scripts, even
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# though portions of the text of Autoconf appear in them. The GNU
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# General Public License (GPL) does govern all other use of the material
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# that constitutes the Autoconf program.
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#
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# Certain portions of the Autoconf source text are designed to be copied
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# (in certain cases, depending on the input) into the output of
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# Autoconf. We call these the "data" portions. The rest of the Autoconf
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# source text consists of comments plus executable code that decides which
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# of the data portions to output in any given case. We call these
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# comments and executable code the "non-data" portions. Autoconf never
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# copies any of the non-data portions into its output.
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#
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# This special exception to the GPL applies to versions of Autoconf
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# released by the Free Software Foundation. When you make and
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# distribute a modified version of Autoconf, you may extend this special
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# exception to the GPL to apply to your modified version as well, *unless*
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# your modified version has the potential to copy into its output some
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# of the text that was the non-data portion of the version that you started
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# with. (In other words, unless your change moves or copies text from
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# the non-data portions to the data portions.) If your modification has
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# such potential, you must delete any notice of this special exception
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# to the GPL from your modified version.
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#
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# Written by David MacKenzie, with help from
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# Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor,
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# Roland McGrath, Noah Friedman, david d zuhn, and many others.
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# AC_PROG_LEX
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# -----------
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# Look for flex or lex. Set its associated library to LEXLIB.
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# Check if lex declares yytext as a char * by default, not a char[].
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AN_MAKEVAR([LEX], [AC_PROG_LEX])
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AN_PROGRAM([lex], [AC_PROG_LEX])
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AN_PROGRAM([flex], [AC_PROG_LEX])
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AC_DEFUN_ONCE([AC_PROG_LEX],
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[AC_CHECK_PROGS(LEX, flex lex, :)
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if test "x$LEX" != "x:"; then
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_AC_PROG_LEX_YYTEXT_DECL
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fi])
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# _AC_PROG_LEX_YYTEXT_DECL
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# ------------------------
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# Check for the Lex output root, the Lex library, and whether Lex
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# declares yytext as a char * by default.
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m4_define([_AC_PROG_LEX_YYTEXT_DECL],
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[cat >conftest.l <<_ACEOF[
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%%
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a { ECHO; }
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b { REJECT; }
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c { yymore (); }
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d { yyless (1); }
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e { yyless (input () != 0); }
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f { unput (yytext[0]); }
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. { BEGIN INITIAL; }
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%%
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#ifdef YYTEXT_POINTER
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extern char *yytext;
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#endif
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int
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main (void)
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{
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return ! yylex () + ! yywrap ();
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}
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]_ACEOF
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_AC_DO_VAR(LEX conftest.l)
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AC_CACHE_CHECK([lex output file root], [ac_cv_prog_lex_root], [
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if test -f lex.yy.c; then
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ac_cv_prog_lex_root=lex.yy
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elif test -f lexyy.c; then
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ac_cv_prog_lex_root=lexyy
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else
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AC_MSG_ERROR([cannot find output from $LEX; giving up])
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fi])
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AC_SUBST([LEX_OUTPUT_ROOT], [$ac_cv_prog_lex_root])dnl
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if test -z "${LEXLIB+set}"; then
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AC_CACHE_CHECK([lex library], [ac_cv_lib_lex], [
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ac_save_LIBS=$LIBS
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ac_cv_lib_lex='none needed'
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for ac_lib in '' -lfl -ll; do
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LIBS="$ac_lib $ac_save_LIBS"
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AC_LINK_IFELSE([`cat $LEX_OUTPUT_ROOT.c`], [ac_cv_lib_lex=$ac_lib])
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test "$ac_cv_lib_lex" != 'none needed' && break
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done
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LIBS=$ac_save_LIBS
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])
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test "$ac_cv_lib_lex" != 'none needed' && LEXLIB=$ac_cv_lib_lex
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fi
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AC_SUBST(LEXLIB)
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AC_CACHE_CHECK(whether yytext is a pointer, ac_cv_prog_lex_yytext_pointer,
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[# POSIX says lex can declare yytext either as a pointer or an array; the
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# default is implementation-dependent. Figure out which it is, since
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# not all implementations provide the %pointer and %array declarations.
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ac_cv_prog_lex_yytext_pointer=no
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ac_save_LIBS=$LIBS
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LIBS="$LEXLIB $ac_save_LIBS"
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AC_LINK_IFELSE(
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[#define YYTEXT_POINTER 1
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`cat $LEX_OUTPUT_ROOT.c`],
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[ac_cv_prog_lex_yytext_pointer=yes])
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LIBS=$ac_save_LIBS
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])
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dnl
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if test $ac_cv_prog_lex_yytext_pointer = yes; then
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AC_DEFINE(YYTEXT_POINTER, 1,
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[Define to 1 if `lex' declares `yytext' as a `char *' by default,
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not a `char[]'.])
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fi
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rm -f conftest.l $LEX_OUTPUT_ROOT.c
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])# _AC_PROG_LEX_YYTEXT_DECL
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# Require AC_PROG_LEX in case some people were just calling this macro.
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AU_DEFUN([AC_DECL_YYTEXT], [AC_PROG_LEX])
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