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#! /bin/sh
# Copyright (C) 2011-2021 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 <https://www.gnu.org/licenses/>.
# Check that we can get use the 'yywrap' function from a system-wide
# library, if that's available.
required='cc lex'
. test-init.sh
cat >> configure.ac << 'END'
AC_PROG_CC
AC_PROG_RANLIB
AC_PROG_LEX
AC_OUTPUT
END
cat > Makefile.am << 'END'
bin_PROGRAMS = lexer
lexer_SOURCES = foo.l
lexer_LDADD = $(LEXLIB)
.PHONY: have-lexlib
have-lexlib:
test x'$(LEXLIB)' != x
echo 'int main (void) { return yywrap (); }' > x.c
$(CC) -c x.c
$(CC) x.$(OBJEXT) $(LEXLIB)
rm -f x.c *.$(OBJEXT) *.o *.out *.exe
END
cat > foo.l <<'END'
%{
#define YY_NO_UNISTD_H 1
%}
%%
"GOOD" return EOF;
.
%%
int main (void)
{
/* We don't use a 'while' loop here (like a real lexer would do)
to avoid possible hangs. */
if (yylex () == EOF)
return 0;
else
return 1;
}
END
$ACLOCAL
$AUTOCONF
$AUTOMAKE -a
./configure
$MAKE have-lexlib || skip_ "no system-wide lex library found"
# Program should build and run and distribute.
$MAKE all
if ! cross_compiling; then
echo GOOD | ./lexer
echo BAD | ./lexer && exit 1
: For shells with busted 'set -e'.
fi
yl_distcheck
:
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