94 lines
2.1 KiB
Bash
94 lines
2.1 KiB
Bash
#! /bin/sh
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# Copyright (C) 2011-2017 Free Software Foundation, Inc.
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#
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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, see <http://www.gnu.org/licenses/>.
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# Automake lex support can work with flex '--header-file' option (see
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# bugs #8844 and #9933).
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required='cc flex'
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. test-init.sh
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# Here, we need to use the use flex option '--header-file', but some
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# older flex versions don't support is (see automake bug#11524 and
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# bug#12836). Skip this test if such an old flex version is detected.
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$LEX --help | grep '.*--header-file' \
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|| skip_ "flex doesn't support the '--header-file' option"
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cat >> configure.ac << 'END'
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AC_PROG_CC
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AC_PROG_LEX
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AC_OUTPUT
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END
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cat > Makefile.am << 'END'
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bin_PROGRAMS = foo
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foo_SOURCES = lexer.l main.c mylex.h
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foo_LFLAGS = --header-file=mylex.h
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BUILT_SOURCES = mylex.h
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# Recover from removal of header.
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mylex.h: foo-lexer.c
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test -f $@ || rm -f foo-lexer.c
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test -f $@ || $(MAKE) $(AM_MAKEFLAGS) foo-lexer.c
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END
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cat > lexer.l << 'END'
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%option noyywrap
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%{
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#define YY_NO_UNISTD_H 1
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%}
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%%
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"GOOD" return EOF;
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.
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%%
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END
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cat > main.c <<'END'
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#define YY_NO_UNISTD_H 1
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#include "mylex.h"
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int main (void)
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{
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/* We don't use a 'while' loop here (like a real lexer would do)
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to avoid possible hangs. */
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if (yylex () == EOF)
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return 0;
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else
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return 1;
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}
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END
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$ACLOCAL
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$AUTOCONF
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$AUTOMAKE -a
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./configure
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# Program should build and run.
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$MAKE
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if ! cross_compiling; then
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echo GOOD | ./foo
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echo BAD | ./foo && exit 1
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: For shells with busted 'set -e'.
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fi
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# Recovering from header removal.
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rm -f mylex.h
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$MAKE
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test -f mylex.h
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# Sanity check on distribution.
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yl_distcheck
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:
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