kc3-lang/automake/t/yflags-force-conditional.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/yflags-force-conditional.sh

• #! /bin/sh
  # Copyright (C) 2011-2017 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 the user can force automake to use *_YFLAGS variables
  # which have conditional content.
  
  . test-init.sh
  
  cat >> configure.ac <<'END'
  AC_SUBST([CC], [false])
  AC_PROG_YACC
  AM_CONDITIONAL([COND], [test x"$cond" = x"yes"])
  AC_OUTPUT
  END
  
  mkdir bin
  cat > bin/fake-yacc <<'END'
  #!/bin/sh
  echo "/* $* */" > y.tab.c
  echo 'extern int dummy;' >> y.tab.c
  END
  chmod a+x bin/fake-yacc
  PATH=$(pwd)/bin$PATH_SEPARATOR$PATH; export PATH
  YACC=fake-yacc; export YACC
  
  cat > Makefile.am <<'END'
  AUTOMAKE_OPTIONS = no-dependencies
  bin_PROGRAMS = foo bar
  foo_SOURCES = foo.y main.c
  bar_SOURCES = $(foo_SOURCES)
  bar_YFLAGS = $(bar_yflags2)
  if COND
  AM_YFLAGS = __am_cond_yes__
  bar_YFLAGS += __bar_cond_yes__
  else !COND
  AM_YFLAGS = __am_cond_no__
  bar_yflags2 = __bar_cond_no__
  endif !COND
  END
  
  : > foo.y
  
  $ACLOCAL
  $AUTOCONF
  $AUTOMAKE -a -Wno-unsupported
  
  $EGREP '(YFLAGS|yflags|am__append)' Makefile.in # For debugging.
  
  ./configure cond=yes
  $MAKE foo.c bar-foo.c
  
  cat foo.c
  cat bar-foo.c
  
  $FGREP ' __am_cond_yes__ ' foo.c
  $FGREP ' __bar_cond_yes__ ' bar-foo.c
  $FGREP 'cond_no' foo.c bar-foo.c && exit 1
  
  $MAKE maintainer-clean
  ls -l
  
  ./configure cond=no
  $MAKE foo.c bar-foo.c
  
  cat foo.c
  cat bar-foo.c
  
  $FGREP ' __am_cond_no__ ' foo.c
  $FGREP ' __bar_cond_no__ ' bar-foo.c
  $FGREP 'cond_yes' foo.c bar-foo.c && exit 1
  
  :
  

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