blob: 9a64266c91599046ce19eddd50b14f5434541521 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
#! /bin/sh
# Copyright (C) 2011-2012 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/>.
# Check that we can get use the 'yywrap' function from a system-wide
# library, if that's available.
required='cc lex'
. ./defs || exit 1
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
:
|
