t/lex-multiple.sh

   1 #! /bin/sh
   2 # Copyright (C) 2012-2024 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 that we can build a program using several lexers at once
  18 # (assuming Flex is used).  That is a little tricky, but possible.
  19 # See:
  20 # <https://lists.gnu.org/archive/html/automake/2010-10/msg00081.html>
  21 # <https://lists.gnu.org/archive/html/automake/2009-03/msg00061.html>
  22
  23 required='cc flex'
  24 . test-init.sh
  25
  26 cat >> configure.ac << 'END'
  27 AC_PROG_CC
  28 AC_PROG_LEX
  29 AM_PROG_AR
  30 AC_PROG_RANLIB
  31 AC_OUTPUT
  32 END
  33
  34 cat > Makefile.am <<  'END'
  35 AM_LFLAGS = --never-interactive
  36
  37 bin_PROGRAMS = zardoz
  38
  39 zardoz_SOURCES = main.c
  40 # Convenience libraries.
  41 noinst_LIBRARIES = liblex.a liblex-foo.a liblex-bar.a
  42 zardoz_LDADD = $(noinst_LIBRARIES)
  43
  44 liblex_a_SOURCES = 0.l
  45
  46 # We need the output to always be named 'lex.yy.c', in order for
  47 # ylwrap to pick it up.
  48 liblex_foo_a_LFLAGS = -Pfoo -olex.yy.c
  49 liblex_foo_a_SOURCES = a.l
  50
  51 # Ditto.
  52 liblex_bar_a_LFLAGS = -Pbar_ -olex.yy.c
  53 liblex_bar_a_SOURCES = b.l
  54 END
  55
  56 cat > main.c << 'END'
  57 #include <stdio.h>
  58 #include <stdlib.h>
  59 #include <string.h>
  60
  61 extern int yylex (void);
  62 extern int foolex (void);
  63 extern int bar_lex (void);
  64
  65 int main (int argc, char *argv[])
  66 {
  67   if (argc != 2)
  68     abort ();
  69   else if (!strcmp(argv[1], "--vanilla"))
  70     return (yylex () != 121);
  71   else if (!strcmp(argv[1], "--foo"))
  72     return (foolex () != 121);
  73   else if (!strcmp(argv[1], "--bar"))
  74     return (bar_lex () != 121);
  75   else
  76     abort ();
  77 }
  78 END
  79
  80 cat > 0.l << 'END'
  81 %%
  82 "VANILLA" { printf (":%s:\n", yytext); return 121; }
  83 . { printf (":%s:\n", yytext); return 1; }
  84 %%
  85 /* Avoid possible link errors. */
  86 int yywrap (void) { return 1; }
  87 END
  88
  89 sed 's/VANILLA/FOO/' 0.l > a.l
  90 sed 's/VANILLA/BAR/' 0.l > b.l
  91
  92 $ACLOCAL
  93 $AUTOCONF
  94 $AUTOMAKE --add-missing
  95
  96 ./configure
  97 $MAKE
  98
  99 if ! cross_compiling; then
 100   echo VANILLA | ./zardoz --vanilla
 101   echo FOO | ./zardoz --foo
 102   echo BAR | ./zardoz --bar
 103   ./zardoz --vanilla </dev/null && exit 1
 104   echo BAR | ./zardoz --foo && exit 1
 105   : For shells with busted 'set -e'.
 106 fi
 107
 108 yl_distcheck
 109
 110 :