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#! /bin/sh
# Copyright (C) 2011-2015 Free Software Foundation, Inc.
#
# 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, 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/>.
# Yacc + C++ support for a program built only from yacc sources.
# Lex + C++ support for a program built only from lex sources.
required='c++ yacc'
. test-init.sh
cat >> configure.ac << 'END'
AC_PROG_CXX
AC_PROG_LEX
AC_PROG_YACC
AC_OUTPUT
END
cat > Makefile.am << 'END'
bin_PROGRAMS = foo bar
foo_SOURCES = foo.yy
bar_SOURCES = bar.lxx
.PHONY: check-dist
check-dist: distdir
echo ' ' $(am.dist.common-files) ' ' | grep '[ /]foo\.cc'
echo ' ' $(am.dist.common-files) ' ' | grep '[ /]bar\.cxx'
ls -l $(distdir)
test -f $(distdir)/foo.cc
test -f $(distdir)/bar.cxx
END
cat > foo.yy << 'END'
%{
// Valid C++, but deliberately invalid C.
#include <cstdio>
#include <cstdlib>
// "std::" qualification required by Sun C++ 5.9.
int yylex (void) { return std::getchar (); }
void yyerror (const char *s) { return; }
%}
%%
a : 'a' { exit(0); };
%%
int main (void)
{
yyparse ();
return 1;
}
END
cat > bar.lxx << 'END'
%{
#define YY_NO_UNISTD_H 1
int isatty (int fd) { return 0; }
%}
%%
"x" return EOF;
.
%%
// Valid C++, but deliberately invalid C.
#include <cstdlib>
int main (void)
{
/* We don't use a 'while' loop here (like a real lexer would do)
to avoid possible hangs. */
if (yylex () == EOF)
std::exit (0);
else
std::exit (1);
}
/* Avoid possible link errors. */
int yywrap (void) { return 1; }
END
$ACLOCAL
$AUTOCONF
$AUTOMAKE -a
./configure
$MAKE
# The Yacc-derived and Lex-derived C++ sources must be created, and not
# removed once compiled (i.e., not treated like "intermediate files" in
# the GNU make sense).
test -f foo.cc
test -f bar.cxx
if cross_compiling; then :; else
echo a | ./foo
echo b | ./foo && exit 1
echo x | ./bar
echo y | ./bar && exit 1
: # Don't trip on 'set -e'.
fi
# The Yacc-derived and Lex-derived C++ sources must be shipped.
$MAKE check-dist
# Sanity check on distribution.
$MAKE distcheck
:
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