autogen.sh

   1 :
   2 #
   3 # This script checks various configure parameters and uses three files:
   4 #   * autogen.input (ro)
   5 #   * autogen.lastrun (rw)
   6 #   * autogen.lastrun.bak (rw)
   7 #
   8 # If _no_ parmeters:
   9 #   Read args from autogen.input or autogen.lastrun
  10 # Else
  11 #   Backup autogen.lastrun as autogen.lastrun.bak
  12 #   Write autogen.lastrun with new commandline args
  13 #
  14 # Run configure with checked args
  15 #
  16     eval 'exec perl -S $0 ${1+"$@"}'
  17         if 0;
  18
  19 use strict;
  20 use Cwd ('cwd', 'realpath');
  21 use File::Basename;
  22
  23 my $src_path=dirname(realpath($0));
  24 my $build_path=realpath(cwd());
  25 # since this looks crazy, if you have a symlink on a path up to and including
  26 # the current directory, we need our configure to run in the realpath of that
  27 # such that compiled (realpath'd) dependency filenames match the filenames
  28 # used in our makefiles - ie. this gets dependencies right via SRC_ROOT
  29 chdir ($build_path);
  30 # more amazingly, if you don't clobber 'PWD' shells will re-assert their
  31 # old path from the environment, not cwd.
  32 $ENV{PWD} = $build_path;
  33
  34 sub clean()
  35 {
  36     system ("rm -Rf autom4te.cache");
  37     system ("rm -f missing install-sh mkinstalldirs libtool ltmain.sh");
  38     print "Cleaned the build tree\n";
  39 }
  40
  41 my $aclocal;
  42
  43 # check we have various vital tools
  44 sub sanity_checks($)
  45 {
  46     my $system = shift;
  47     my @path = split (':', $ENV{'PATH'});
  48     my %required =
  49       (
  50        'pkg-config' => "pkg-config is required to be installed",
  51        'autoconf'   => "autoconf is required",
  52        $aclocal     => "$aclocal is required",
  53       );
  54
  55     for my $elem (@path) {
  56         for my $app (keys %required) {
  57             if (-f "$elem/$app") {
  58                 delete $required{$app};
  59             }
  60         }
  61     }
  62     if ((keys %required) > 0) {
  63         print ("Various low-level dependencies are missing, please install them:\n");
  64         for my $app (keys %required) {
  65             print "\t $app: " . $required{$app} . "\n";
  66         }
  67         exit (1);
  68     }
  69 }
  70
  71 # one argument per line
  72 sub read_args($)
  73 {
  74     my $file = shift;
  75     my $fh;
  76     my @lst;
  77     open ($fh, $file) || die "can't open file: $file";
  78     while (<$fh>) {
  79         chomp();
  80         # migrate from the old system
  81         if ( substr($_, 0, 1) eq "'" ) {
  82             print STDERR "Migrating options from the old autogen.lastrun format, using:\n";
  83             my @opts;
  84             @opts = split(/'/);
  85             foreach my $opt (@opts) {
  86                 if ( substr($opt, 0, 1) eq "-" ) {
  87                     push @lst, $opt;
  88                     print STDERR "  $opt\n";
  89                 }
  90             }
  91         } elsif ( substr($_, 0, 1) eq "#" ) {
  92             # comment
  93         } elsif ( length == 0 ) {
  94             # empty line
  95         } else {
  96             push @lst, $_;
  97         }
  98     }
  99     close ($fh);
 100     # print "read args from file '$file': @lst\n";
 101     return @lst;
 102 }
 103
 104 sub invalid_distro($$)
 105 {
 106     my ($config, $distro) = @_;
 107     print STDERR "Can't find distro option set: $config\nThis is not necessarily a problem.\n";
 108     print STDERR "Distros with distro option sets are:\n";
 109     my $dirh;
 110     opendir ($dirh, "$src_path/distro-configs");
 111     while (($_ = readdir ($dirh))) {
 112         /(.*)\.conf$/ || next;
 113         print STDERR "\t$1\n";
 114     }
 115     closedir ($dirh);
 116 }
 117
 118 # Alloc $ACLOCAL to specify which aclocal to use
 119 $aclocal = $ENV{ACLOCAL} ? $ENV{ACLOCAL} : 'aclocal';
 120
 121 my $system = `uname -s`;
 122 chomp $system;
 123
 124 sanity_checks ($system) unless($system eq 'Darwin');
 125
 126 my $aclocal_flags = $ENV{ACLOCAL_FLAGS};
 127
 128 $aclocal_flags .= " -I $src_path/m4";
 129 $aclocal_flags .= " -I $src_path/m4/mac" if ($system eq 'Darwin');
 130 $aclocal_flags .= " -I /opt/freeware/share/aclocal" if ($system eq 'AIX');
 131
 132 $ENV{AUTOMAKE_EXTRA_FLAGS} = '--warnings=no-portability' if (!($system eq 'Darwin'));
 133
 134 if ($src_path ne $build_path)
 135 {
 136     system ("ln -sf $src_path/configure.ac configure.ac");
 137     system ("ln -sf $src_path/g g");
 138     my @modules = <$src_path/*/Makefile>;
 139     foreach my $module (@modules)
 140     {
 141         my $dir = basename (dirname ($module));
 142         mkdir ($dir);
 143         system ("ln -sf $src_path/$dir/Makefile $dir/Makefile");
 144     }
 145     my @external_modules = <$src_path/external/*/Makefile>;
 146     mkdir ("external");
 147     system ("ln -sf $src_path/external/Module_external.mk external/");
 148     foreach my $module (@external_modules)
 149     {
 150         my $dir = basename (dirname ($module));
 151         mkdir ("external/$dir");
 152         system ("ln -sf $src_path/external/$dir/Makefile external/$dir/Makefile");
 153     }
 154 }
 155 system ("$aclocal $aclocal_flags") && die "Failed to run aclocal";
 156 unlink ("configure");
 157 system ("autoconf -I ${src_path}") && die "Failed to run autoconf";
 158 die "Failed to generate the configure script" if (! -f "configure");
 159
 160 # Handle help arguments first, so we don't clobber autogen.lastrun
 161 for my $arg (@ARGV) {
 162     if ($arg =~ /^(--help|-h|-\?)$/) {
 163         system ("./configure --help");
 164         exit;
 165     }
 166 }
 167
 168 my @cmdline_args = ();
 169
 170 my $input = "autogen.input";
 171 my $lastrun = "autogen.lastrun";
 172
 173 if (!@ARGV) {
 174     if (-f $input) {
 175         if (-f $lastrun) {
 176             print STDERR <<WARNING;
 177 ********************************************************************
 178 *
 179 *   Reading $input and ignoring $lastrun!
 180 *   Consider removing $lastrun to get rid of this warning.
 181 *
 182 ********************************************************************
 183 WARNING
 184         }
 185         @cmdline_args = read_args ($input);
 186     } elsif (-f $lastrun) {
 187         print STDERR "Reading $lastrun. Please rename it to $input to avoid this message.\n";
 188         @cmdline_args = read_args ($lastrun);
 189     }
 190 } else {
 191     if (-f $input) {
 192         print STDERR <<WARNING;
 193 ********************************************************************
 194 *
 195 *   Using commandline arguments and ignoring $input!
 196 *
 197 ********************************************************************
 198 WARNING
 199     }
 200     @cmdline_args = @ARGV;
 201 }
 202
 203 my @args;
 204 my $default_config = "$src_path/distro-configs/default.conf";
 205 if (-f $default_config) {
 206     print STDERR "Reading default config file: $default_config.\n";
 207     push @args, read_args ($default_config);
 208 }
 209 for my $arg (@cmdline_args) {
 210     if ($arg eq '--clean') {
 211         clean();
 212     } elsif ($arg =~ m/--with-distro=(.*)$/) {
 213         my $config = "$src_path/distro-configs/$1.conf";
 214         if (! -f $config) {
 215             invalid_distro ($config, $1);
 216         } else {
 217             push @args, read_args ($config);
 218         }
 219     } else {
 220         push @args, $arg;
 221     }
 222 }
 223 for my $arg (@args) {
 224     if ($arg =~ /^([A-Z]+)=(.*)/) {
 225         $ENV{$1} = $2;
 226     }
 227 }
 228
 229 if (defined $ENV{NOCONFIGURE}) {
 230     print "Skipping configure process.";
 231 } else {
 232     # Save autogen.lastrun only if we did get some arguments on the command-line
 233     if (! -f $input && @ARGV) {
 234         if (scalar(@cmdline_args) > 0) {
 235             # if there's already an autogen.lastrun, make a backup first
 236             if (-e $lastrun) {
 237                 open (my $fh, $lastrun) || warn "Can't open $lastrun.\n";
 238                 open (BAK, ">$lastrun.bak") || warn "Can't create backup file $lastrun.bak.\n";
 239                 while (<$fh>) {
 240                     print BAK;
 241                 }
 242                 close (BAK) && close ($fh);
 243             }
 244             # print "Saving command-line args to $lastrun\n";
 245             my $fh;
 246             open ($fh, ">autogen.lastrun") || die "Can't open autogen.lastrun: $!";
 247             for my $arg (@cmdline_args) {
 248                 print $fh "$arg\n";
 249             }
 250             close ($fh);
 251         }
 252     }
 253     push @args, "--srcdir=$src_path";
 254     push @args, "--enable-option-checking=fatal";
 255
 256     print "Running ./configure with '" . join ("' '", @args), "'\n";
 257     system ("./configure", @args) && die "Error running configure";
 258 }
 259
 260 # Local Variables:
 261 # mode: perl
 262 # cperl-indent-level: 4
 263 # tab-width: 4
 264 # indent-tabs-mode: nil
 265 # End:
 266
 267 # vim:set ft=perl shiftwidth=4 softtabstop=4 expandtab: #