t/objcxx-flags.sh

   1 #! /bin/sh
   2 # Copyright (C) 2012 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 # Test Objective C++ compilation flags.
  18 # See also sister test 'objc-flags.sh'.
  19
  20 . ./defs || exit 1
  21
  22 cat >> configure.ac << 'END'
  23 dnl Support for Object C++ was introduced only in Autoconf 2.65.
  24 AC_PREREQ([2.65])
  25 AC_PROG_OBJCXX
  26 AC_OUTPUT
  27 END
  28
  29 cat > Makefile.am << 'END'
  30 AM_DEFAULT_SOURCE_EXT = .mm
  31 bin_PROGRAMS = foo2 foo4
  32 AM_OBJCXXFLAGS = -DVALUE=2 -DERROR=1
  33 foo4_OBJCXXFLAGS = -DVALUE=4 -DERROR=1
  34 END
  35
  36 for i in 2 4; do
  37   unindent > foo$i.mm << END
  38     /* Let's make this file valid Objective C but invalid C. */
  39     #import <stdlib.h>
  40     @interface Who_Cares { } @end
  41     #ifdef ERROR
  42     #  error "macro ERROR is defined for foo.mm"
  43     #else
  44     #  if VALUE == $i
  45          int main (void) { exit (0); }
  46     #  else
  47     #    error "VALUE is != $i in foo.mm"
  48     #  endif
  49     #endif
  50 END
  51 done
  52
  53 if $ACLOCAL; then
  54   : We have a modern enough autoconf, go ahead.
  55 elif test $? -eq 63; then
  56   skip_ "Object C++ support requires Autoconf 2.65 or later"
  57 else
  58   exit 1 # Some other aclocal failure.
  59 fi
  60
  61 $AUTOCONF
  62 $AUTOMAKE -a
  63
  64 $FGREP OBJCXXFLAGS Makefile.in # For debugging.
  65 grep '\$(OBJCXXFLAGS).*\$(AM_OBJCXXFLAGS)'       Makefile.in && exit 1
  66 grep '\$(OBJCXXFLAGS).*\$(foo.*_OBJCXXFLAGS)'    Makefile.in && exit 1
  67 grep '\$(foo.*_OBJCXXFLAGS).*\$(AM_OBJCXXFLAGS)' Makefile.in && exit 1
  68
  69 ./configure OBJCXXFLAGS=-UERROR
  70 $MAKE
  71
  72 :