t/lex-noyywrap.sh

   1 #! /bin/sh
   2 # Copyright (C) 1999-2017 Free Software Foundation, Inc.
   3 #
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 2, or (at your option)
   7 # any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  16
  17 # Check Lex support with flex using the '%noyywrap' option.
  18
  19 required='cc flex'
  20 . test-init.sh
  21
  22 cat >> configure.ac << 'END'
  23 AC_PROG_CC
  24 AM_PROG_LEX
  25 AC_OUTPUT
  26 END
  27
  28 cat > Makefile.am << 'END'
  29 bin_PROGRAMS = foo
  30 foo_SOURCES = foo.l
  31
  32 .PHONY: test-no-lexlib
  33 check-local: test-no-lexlib
  34 test-no-lexlib:
  35         test x'$(LEXLIB)' = x'none needed'
  36 END
  37
  38 cat > foo.l << 'END'
  39 %option noyywrap
  40 %{
  41 #define YY_NO_UNISTD_H 1
  42 %}
  43 %%
  44 "GOOD"   return EOF;
  45 .
  46 %%
  47 int main (void)
  48 {
  49   /* We don't use a 'while' loop here (like a real lexer would do)
  50      to avoid possible hangs. */
  51   if (yylex () == EOF)
  52     return 0;
  53   else
  54     return 1;
  55 }
  56 END
  57
  58 $ACLOCAL
  59 $AUTOCONF
  60 $AUTOMAKE -a
  61
  62 ./configure LEXLIB="none needed"
  63
  64 # Program should build and run.
  65 $MAKE
  66 if ! cross_compiling; then
  67   echo GOOD | ./foo
  68   echo BAD | ./foo && exit 1
  69   : For shells with busted 'set -e'.
  70 fi
  71
  72 # Sanity check on distribution.  Escape in LEXLIB must use backspace,
  73 # not double-quotes, to avoid a spurious failure with AIX make.
  74 yl_distcheck DISTCHECK_CONFIGURE_FLAGS='LEXLIB=none\ needed'
  75
  76 :