source4/build/smb_build/config_mk.pm

   1 # Samba Build System
   2 # - config.mk parsing functions
   3 #
   4 #  Copyright (C) Stefan (metze) Metzmacher 2004
   5 #  Copyright (C) Jelmer Vernooij 2005
   6 #  Released under the GNU GPL
   7 #
   8
   9 package smb_build::config_mk;
  10 use smb_build::input;
  11 use File::Basename;
  12
  13 use strict;
  14
  15 my $section_types = {
  16         "EXT_LIB" => {
  17                 "LIBS"                  => "list",
  18                 "CFLAGS"                => "list",
  19                 "CPPFLAGS"              => "list",
  20                 "LDFLAGS"               => "list",
  21                 },
  22         "PYTHON" => {
  23                 "LIBRARY_REALNAME" => "string",
  24                 "PRIVATE_DEPENDENCIES"  => "list",
  25                 "PUBLIC_DEPENDENCIES"   => "list",
  26                 "ENABLE"                => "bool",
  27                 "LDFLAGS"               => "list",
  28                 "CFLAGS"                => "list",
  29         },
  30         "SUBSYSTEM" => {
  31                 "PRIVATE_DEPENDENCIES"  => "list",
  32                 "PUBLIC_DEPENDENCIES"   => "list",
  33
  34                 "ENABLE"                => "bool",
  35
  36                 "CFLAGS"                => "list",
  37                 "LDFLAGS"               => "list",
  38                 "STANDARD_VISIBILITY"   => "string",
  39                 "INIT_FUNCTION_SENTINEL" => "string"
  40                 },
  41         "MODULE" => {
  42                 "SUBSYSTEM"             => "string",
  43
  44                 "INIT_FUNCTION"         => "string",
  45
  46                 "PRIVATE_DEPENDENCIES"  => "list",
  47
  48                 "ALIASES" => "list",
  49
  50                 "ENABLE"                => "bool",
  51
  52                 "OUTPUT_TYPE"           => "list",
  53
  54                 "CFLAGS"                => "list"
  55                 },
  56         "BINARY" => {
  57
  58                 "PRIVATE_DEPENDENCIES"  => "list",
  59
  60                 "ENABLE"                => "bool",
  61
  62                 "INSTALLDIR"            => "string",
  63                 "CFLAGS"                => "list",
  64                 "LDFLAGS"               => "list",
  65                 "STANDARD_VISIBILITY"   => "string",
  66
  67                 "USE_HOSTCC"            => "bool"
  68                 },
  69         "LIBRARY" => {
  70                 "LIBRARY_REALNAME" => "string",
  71
  72                 "INIT_FUNCTION_TYPE"    => "string",
  73                 "INIT_FUNCTION_SENTINEL" => "string",
  74                 "OUTPUT_TYPE"           => "list",
  75
  76                 "PRIVATE_DEPENDENCIES"  => "list",
  77                 "PUBLIC_DEPENDENCIES"   => "list",
  78
  79                 "ENABLE"                => "bool",
  80
  81                 "CFLAGS"                => "list",
  82                 "LDFLAGS"               => "list",
  83                 "STANDARD_VISIBILITY"   => "string"
  84                 }
  85 };
  86
  87 use vars qw(@parsed_files);
  88
  89 @parsed_files = ();
  90
  91 sub _read_config_file($$$)
  92 {
  93         use Cwd;
  94
  95         my ($srcdir, $builddir, $filename) = @_;
  96         my @dirlist;
  97
  98         # We need to change our working directory because config.mk files can
  99         # give shell commands as the argument to "include". These shell
 100         # commands can take arguments that are relative paths and we don't have
 101         # a way of sensibly rewriting these.
 102         my $cwd = getcwd;
 103         chomp $cwd;
 104
 105         if ($srcdir ne $builddir) {
 106                 # Push the builddir path on the front, so we prefer builddir
 107                 # to srcdir when the file exists in both.
 108                 @dirlist = ($builddir, $srcdir);
 109         } else {
 110                 @dirlist = ($srcdir);
 111         }
 112
 113         foreach my $d (@dirlist) {
 114                 my @lines;
 115                 my $basedir;
 116
 117                 chdir $cwd;
 118                 chdir $d;
 119
 120                 # We need to catch the exception from open in the case where
 121                 # the filename is actually a shell pipeline. Why is this
 122                 # different to opening a regular file? Because this is perl!
 123                 eval {
 124                         open(CONFIG_MK, "./$filename");
 125                         @lines = <CONFIG_MK>;
 126                         close(CONFIG_MK);
 127                 };
 128
 129                 chdir $cwd;
 130                 next unless (@lines);
 131
 132                 # I blame abartlett for this crazy hack -- jpeach
 133                 if ($filename =~ /\|$/) {
 134                         $basedir = $builddir;
 135                 } else {
 136                         $basedir = dirname($filename);
 137                         push(@parsed_files, $filename);
 138                 }
 139                 $basedir =~ s!^($builddir|$srcdir)[/]!!;
 140                 return ($filename, $basedir, @lines);
 141         }
 142
 143         chdir $cwd;
 144         return;
 145 }
 146
 147 ###########################################################
 148 # The parsing function which parses the file
 149 #
 150 # $result = _parse_config_mk($input, $srcdir, $builddir, $filename)
 151 #
 152 # $filename -   the path of the config.mk file
 153 #               which should be parsed
 154 sub run_config_mk($$$$)
 155 {
 156         sub run_config_mk($$$$);
 157         my ($input, $srcdir, $builddir, $filename) = @_;
 158         my $result;
 159         my $linenum = -1;
 160         my $infragment = 0;
 161         my $section = "GLOBAL";
 162         my $makefile = "";
 163
 164         my $basedir;
 165
 166         my $parsing_file;
 167         my @lines;
 168
 169         $ENV{builddir} = $builddir;
 170         $ENV{srcdir} = $srcdir;
 171
 172         ($parsing_file, $basedir, @lines) =
 173             _read_config_file($srcdir, $builddir, $filename);
 174
 175         die ("$0: can't open '$filename'")
 176                 unless ($parsing_file and $basedir and @lines);
 177
 178         my $line = "";
 179         my $prev = "";
 180
 181         # Emit a line that lets us match up final makefile output with the
 182         # corresponding input files. The curlies are so you can match the
 183         # BEGIN/END pairs in a text editor.
 184         $makefile .= "# BEGIN{ $parsing_file\n";
 185
 186         foreach (@lines) {
 187                 $linenum++;
 188
 189                 # lines beginning with '#' are ignored
 190                 next if (/^\#.*$/);
 191
 192                 if (/^(.*)\\$/) {
 193                         $prev .= $1;
 194                         next;
 195                 } else {
 196                         $line = "$prev$_";
 197                         $prev = "";
 198                 }
 199
 200                 if ($line =~ /^\[([-a-zA-Z0-9_.:]+)\][\t ]*$/)
 201                 {
 202                         $section = $1;
 203                         $infragment = 0;
 204
 205                         $result->{$section}{EXISTS}{KEY} = "EXISTS";
 206                         $result->{$section}{EXISTS}{VAL} = 1;
 207                         next;
 208                 }
 209
 210                 # include
 211                 if ($line =~ /^mkinclude (.*)$/) {
 212                         my $subfile= $1;
 213                         my $subdir = dirname($filename);
 214                         $subdir =~ s/^\.$//g;
 215                         $subdir =~ s/^\.\///g;
 216                         $subdir .= "/" if ($subdir ne "");
 217                         $makefile .= "basedir := $subdir\n";
 218                         $makefile .= run_config_mk($input, $srcdir, $builddir, $subdir.$subfile);
 219                         next;
 220                 }
 221
 222                 # empty line
 223                 if ($line =~ /^[ \t]*$/) {
 224                         $section = "GLOBAL";
 225                         if ($infragment) { $makefile.="\n"; }
 226                         next;
 227                 }
 228
 229                 # global stuff is considered part of the makefile
 230                 if ($section eq "GLOBAL") {
 231                         if (!$infragment) { $makefile.="\n"; }
 232                         $makefile .= $line;
 233                         $infragment = 1;
 234                         next;
 235                 }
 236
 237                 # Assignment
 238                 if ($line =~ /^([a-zA-Z0-9_]+)[\t ]*=(.*)$/) {
 239                         $result->{$section}{$1}{VAL} = $2;
 240                         $result->{$section}{$1}{KEY} = $1;
 241
 242                         next;
 243                 }
 244
 245                 die("$parsing_file:$linenum: Bad line");
 246         }
 247
 248         $makefile .= "# }END $parsing_file\n";
 249
 250         foreach my $section (keys %{$result}) {
 251                 my ($type, $name) = split(/::/, $section, 2);
 252
 253                 my $sectype = $section_types->{$type};
 254                 if (not defined($sectype)) {
 255                         die($parsing_file.":[".$section."] unknown section type \"".$type."\"!");
 256                 }
 257
 258                 $input->{$name}{NAME} = $name;
 259                 $input->{$name}{TYPE} = $type;
 260                 $input->{$name}{MK_FILE} = $parsing_file;
 261                 $input->{$name}{BASEDIR} = $basedir;
 262
 263                 foreach my $key (values %{$result->{$section}}) {
 264                         next if ($key->{KEY} eq "EXISTS");
 265                         $key->{VAL} = smb_build::input::strtrim($key->{VAL});
 266                         my $vartype = $sectype->{$key->{KEY}};
 267                         if (not defined($vartype)) {
 268                                 die($parsing_file.":[".$section."]: unknown attribute type \"$key->{KEY}\"!");
 269                         }
 270                         if ($vartype eq "string") {
 271                                 $input->{$name}{$key->{KEY}} = $key->{VAL};
 272                         } elsif ($vartype eq "list") {
 273                                 $input->{$name}{$key->{KEY}} = [smb_build::input::str2array($key->{VAL})];
 274                         } elsif ($vartype eq "bool") {
 275                                 if (($key->{VAL} ne "YES") and ($key->{VAL} ne "NO")) {
 276                                         die("Invalid value for bool attribute $key->{KEY}: $key->{VAL} in section $section");
 277                                 }
 278                                 $input->{$name}{$key->{KEY}} = $key->{VAL};
 279                         }
 280                 }
 281         }
 282
 283         return $makefile;
 284 }
 285
 286 1;