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      chdir $srcdir;

      if($pack->{pack} eq 'SDL' && $^O eq 'cygwin') {
        $self->do_system('cp ../../patches/SDL-1.2.14-configure configure');
        $self->do_system('cp ../../patches/SDL-1.2.14-ltmain_sh build-scripts/ltmain.sh');
      }

      # setting environments PATH
      my $extra_PATH = "";
      if ($^O eq 'solaris') {
        # otherwise we get "false cru build/libSDLmain.a build/SDL_dummy_main.o"
        # see http://fixunix.com/ntp/245613-false-cru-libs-libopts-libopts_la-libopts-o.html#post661558
        for (qw[/usr/ccs/bin /usr/xpg4/bin /usr/sfw/bin /usr/xpg6/bin /usr/gnu/bin /opt/gnu/bin /usr/bin]) {
          $extra_PATH .= ":$_" if -d $_;
        }
      }
      $ENV{PATH} = "$prefixdir/bin:$ENV{PATH}$extra_PATH";

      # do './configure ...'
      my $run_configure = 'y';
      $run_configure    = $self->prompt("Run ./configure for '$pack->{pack}' again?", "y") if (-f "config.status");
      if (lc($run_configure) eq 'y') {
        my $cmd = $self->_get_configure_cmd($pack->{pack}, $prefixdir);
        print "Configuring package '$pack->{pack}'...\n";
        print "(cmd: $cmd)\n";
        unless($self->do_system($cmd)) {
          if(-f "config.log" && open(CONFIGLOG, "<config.log")) {
            print "config.log:\n";
            print while <CONFIGLOG>;
            close(CONFIGLOG);
          }
          die "###ERROR### [$?] during ./configure for package '$pack->{pack}'...";
        }
      }

      $self->do_system('cp ../SDL-1.2/libtool libtool') if $pack->{pack} eq 'SDL_Pango';

      # do 'make install'
      my @cmd = ($self->_get_make, 'install');
      print "Running make install $pack->{pack}...\n";
      print "(cmd: ".join(' ',@cmd).")\n";
      $self->do_system(@cmd) or die "###ERROR### [$?] during make ... ";

      chdir $self->base_dir();
    }
  }
  return 1;
}

### internal helper functions

sub _get_configure_cmd {
  my ($self, $pack, $prefixdir) = @_;
  my $extra                     = '';
  my $escaped_prefixdir         = $self->escape_path( $prefixdir );
  my $extra_cflags              = "-I$escaped_prefixdir/include " . $self->get_additional_cflags();
  my $extra_ldflags             = "-L$escaped_prefixdir/lib "     . $self->get_additional_libs();
  my $extra_PATH                = "";
  my $uname                     = $Config{archname};
  my $stdout                    = '';
  my $stderr                    = '';
  my $cmd;

  ($stdout, $stderr) = Capture::Tiny::capture { print `uname -a`; };
  $uname            .= " $stdout" if $stdout;

  # NOTE: all ugly IFs concerning ./configure params have to go here

  if($pack eq 'SDL_gfx' && $uname =~ /(powerpc|ppc|64|2level|alpha|armv[56]|sparc)/i) {
    $extra .= ' --disable-mmx';
  }

  if($pack eq 'SDL' && $uname =~ /(powerpc|ppc)/) {
    $extra .= ' --disable-video-ps3';
  }

  if($pack eq 'SDL' && $^O eq 'darwin' && !check_header($self->get_additional_cflags, 'X11/Xlib.h')) {
    $extra .= ' --without-x';
  }

  if($pack eq 'SDL' && !check_header($self->get_additional_cflags, 'X11/extensions/XShm.h')) {
    $extra        .= ' --disable-video-x11-xv';
    $extra_cflags .= ' -DNO_SHARED_MEMORY';
  }

  if($pack =~ /^SDL_(image|mixer|ttf|gfx|Pango)$/ && $^O eq 'darwin') {
    $extra .= ' --disable-sdltest';
  }

  if($pack eq 'SDL' && $^O eq 'solaris' && !check_header($extra_cflags, 'sys/audioio.h')) {
    $extra .= ' --disable-audio';
  }

  if ($pack eq 'SDL' && $^O eq 'openbsd') {
    my $osver = `uname -r 2>/dev/null`;
    if (!$self->notes('perl_libs')->{pthread} || !$osver || $osver >= 5.0) {
      $extra .= ' --disable-pthreads';
    }
  }

  if($pack =~ /^SDL_/) {
    $extra .= " --with-sdl-prefix=$escaped_prefixdir";
  }

  if($^O eq 'cygwin') {
    #$extra_cflags  .= " -I/lib/gcc/i686-pc-cygwin/3.4.4/include";
    #$extra_ldflags .= " -L/lib/gcc/i686-pc-cygwin/3.4.4";
#    $extra_cflags  .= " -I/usr/include";
#    $extra_ldflags .= " -L/lib";
#    $extra_cflags  .= " -I/lib/gcc/i686-pc-cygwin/4.3.4/include";
#    $extra_ldflags .= " -L/lib/gcc/i686-pc-cygwin/4.3.4";

    if($pack eq 'SDL') {
      # kmx experienced troubles while cygwin build when nasm was present in PATH
#      $extra .= " --disable-nasm --enable-pthreads --enable-pthread-sem --enable-sdl-dlopen --disable-arts"
#              . " --disable-esd --disable-nas --enable-oss --disable-pulseaudio --disable-dga --disable-video-aalib"
#              . " --disable-video-caca --disable-video-dga --enable-video-dummy --disable-video-ggi --enable-video-opengl"
#              . " --enable-video-x11 --disable-video-x11-dgamouse --disable-video-x11-vm --enable-video-x11-xinerama"
#              . " --disable-video-x11-xme --enable-video-x11-xrandr --disable-video-x11-xv --disable-arts-shared"
#              . " --disable-esd-shared --disable-pulseaudio-shared --enable-x11-shared";
    }
  }

  if($pack eq 'jpeg') {