tests/lex-lib-external.test

   1 #! /bin/sh
   2 # Copyright (C) 2011 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 <http://www.gnu.org/licenses/>.
  16
  17 # Check that we can get use the `yywrap' function from a system-wide
  18 # library, if that's available.
  19
  20 required='cc lex'
  21 . ./defs || Exit 1
  22
  23 cat >> configure.in << 'END'
  24 AC_PROG_CC
  25 AC_PROG_RANLIB
  26 AC_PROG_LEX
  27 AC_OUTPUT
  28 END
  29
  30 cat > Makefile.am << 'END'
  31 bin_PROGRAMS = lexer
  32 lexer_SOURCES = foo.l
  33 lexer_LDADD = $(LEXLIB)
  34
  35 .PHONY: have-lexlib
  36 have-lexlib:
  37         test x'$(LEXLIB)' != x
  38         echo 'int main (void) { return yywrap (); }' > x.c
  39         $(CC) -c x.c
  40         $(CC) x.$(OBJEXT) $(LEXLIB)
  41         rm -f x.c *.$(OBJEXT) *.o *.out *.exe
  42 END
  43
  44 cat > foo.l <<'END'
  45 %%
  46 "GOOD"   return EOF;
  47 .
  48 %%
  49 int main (void)
  50 {
  51   /* We don't use a 'while' loop here (like a real lexer would do)
  52      to avoid possible hangs. */
  53   if (yylex () == EOF)
  54     return 0;
  55   else
  56     return 1;
  57 }
  58 END
  59
  60 $ACLOCAL
  61 $AUTOCONF
  62 $AUTOMAKE -a
  63
  64 ./configure
  65 $MAKE have-lexlib || skip_ "no system-wide lex library found"
  66
  67 # Program should build and run and distribute.
  68 $MAKE all
  69 if cross_compiling; then :; else
  70   echo GOOD | ./lexer
  71   echo BAD | ./lexer && Exit 1
  72 fi
  73 $MAKE distcheck
  74
  75 :