kc3-lang/automake/t/lex-multiple.sh

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• Hash : 3562e384
  Author :
  Date : 2017-09-16T13:03:36
  

  Prefer https: URLs
  
  In Gnulib, Emacs, etc. we are changing ftp: and http: URLs to use
  https:, to discourage man-in-the-middle attacks when downloading
  software. The attached patch propagates these changes upstream to
  Automake.  This patch does not affect files that Automake is
  downstream of, which I'll patch separately.
  
  Althouth the resources are not secret, plain HTTP is vulnerable to
  malicious routers that tamper with responses from GNU servers,
  and this sort of thing is all too common when people in some other
  countries browse US-based websites. See, for example:
  
  Aceto G, Botta A, Pescapé A, Awan MF, Ahmad T, Qaisar
  S. Analyzing internet censorship in Pakistan. RTSI
  2016. https://dx.doi.org/10.1109/RTSI.2016.7740626
  
  HTTPS is not a complete solution here, but it can be a significant
  help. The GNU project regularly serves up code to users, so we should
  take some care here.
  

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• t/lex-multiple.sh

• #! /bin/sh
  # Copyright (C) 2012-2017 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 build a program using several lexers at once
  # (assuming Flex is used).  That is a little tricky, but possible.
  # See:
  # <https://lists.gnu.org/archive/html/automake/2010-10/msg00081.html>
  # <https://lists.gnu.org/archive/html/automake/2009-03/msg00061.html>
  
  required='cc flex'
  . test-init.sh
  
  cat >> configure.ac << 'END'
  AC_PROG_CC
  AC_PROG_LEX
  AM_PROG_AR
  AC_PROG_RANLIB
  AC_OUTPUT
  END
  
  cat > Makefile.am << 'END'
  bin_PROGRAMS = zardoz
  
  zardoz_SOURCES = main.c
  # Convenience libraries.
  noinst_LIBRARIES = liblex.a liblex-foo.a liblex-bar.a
  zardoz_LDADD = $(noinst_LIBRARIES)
  
  liblex_a_SOURCES = 0.l
  
  # We need the output to always be named 'lex.yy.c', in order for
  # ylwrap to pick it up.
  liblex_foo_a_LFLAGS = -Pfoo -olex.yy.c
  liblex_foo_a_SOURCES = a.l
  
  # Ditto.
  liblex_bar_a_LFLAGS = -Pbar_ -olex.yy.c
  liblex_bar_a_SOURCES = b.l
  END
  
  cat > main.c << 'END'
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  
  int main (int argc, char *argv[])
  {
    if (argc != 2)
      abort ();
    else if (!strcmp(argv[1], "--vanilla"))
      return (yylex () != 121);
    else if (!strcmp(argv[1], "--foo"))
      return (foolex () != 121);
    else if (!strcmp(argv[1], "--bar"))
      return (bar_lex () != 121);
    else
      abort ();
  }
  END
  
  cat > 0.l << 'END'
  %{
  #define YY_NO_UNISTD_H 1
  %}
  %%
  "VANILLA" { printf (":%s:\n", yytext); return 121; }
  . { printf (":%s:\n", yytext); return 1; }
  %%
  /* Avoid possible link errors. */
  int yywrap (void) { return 1; }
  END
  
  sed 's/VANILLA/FOO/' 0.l > a.l
  sed 's/VANILLA/BAR/' 0.l > b.l
  
  $ACLOCAL
  $AUTOCONF
  $AUTOMAKE --add-missing
  
  ./configure
  $MAKE
  
  if ! cross_compiling; then
    echo VANILLA | ./zardoz --vanilla
    echo FOO | ./zardoz --foo
    echo BAR | ./zardoz --bar
    ./zardoz --vanilla </dev/null && exit 1
    echo BAR | ./zardoz --foo && exit 1
    : For shells with busted 'set -e'.
  fi
  
  yl_distcheck
  
  :
  

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