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