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                 SWIG_FILE => "string",
  24                 "PRIVATE_DEPENDENCIES"  => "list",
  25                 "PUBLIC_DEPENDENCIES"   => "list",
  26                 "OBJ_FILES" => "list",
  27                 "ENABLE"                => "bool",
  28                 "LDFLAGS"               => "list",
  29         },
  30         "SUBSYSTEM" => {
  31                 "OBJ_FILES"             => "list",
  32
  33                 "PRIVATE_DEPENDENCIES"  => "list",
  34                 "PUBLIC_DEPENDENCIES"   => "list",
  35
  36                 "ENABLE"                => "bool",
  37
  38                 "MANPAGE"               => "string",
  39
  40                 "PUBLIC_PROTO_HEADER"   => "string",
  41                 "PRIVATE_PROTO_HEADER"  => "string",
  42
  43                 "PUBLIC_HEADERS"        => "list",
  44
  45                 "CFLAGS"                => "list",
  46                 "LDFLAGS"               => "list",
  47                 "STANDARD_VISIBILITY"   => "string"
  48                 },
  49         "MODULE" => {
  50                 "SUBSYSTEM"             => "string",
  51
  52                 "INIT_FUNCTION"         => "string",
  53                 "OBJ_FILES"             => "list",
  54
  55                 "PRIVATE_DEPENDENCIES"  => "list",
  56
  57                 "ALIASES" => "list",
  58
  59                 "ENABLE"                => "bool",
  60
  61                 "OUTPUT_TYPE"           => "list",
  62
  63                 "MANPAGE"               => "string",
  64                 "PRIVATE_PROTO_HEADER"  => "string",
  65
  66                 "CFLAGS"                => "list"
  67                 },
  68         "BINARY" => {
  69                 "OBJ_FILES"             => "list",
  70
  71                 "PRIVATE_DEPENDENCIES"  => "list",
  72
  73                 "ENABLE"                => "bool",
  74
  75                 "MANPAGE"               => "string",
  76                 "INSTALLDIR"            => "string",
  77                 "PRIVATE_PROTO_HEADER"  => "string",
  78
  79                 "CFLAGS"                => "list",
  80                 "LDFLAGS"               => "list",
  81                 "STANDARD_VISIBILITY"   => "string",
  82
  83                 "USE_HOSTCC"            => "bool"
  84                 },
  85         "LIBRARY" => {
  86                 "VERSION"               => "string",
  87                 "SO_VERSION"            => "string",
  88                 "LIBRARY_REALNAME" => "string",
  89
  90                 "INIT_FUNCTION_TYPE"    => "string",
  91                 "OUTPUT_TYPE"           => "list",
  92
  93                 "OBJ_FILES"             => "list",
  94
  95                 "DESCRIPTION"           => "string",
  96
  97                 "PRIVATE_DEPENDENCIES"  => "list",
  98                 "PUBLIC_DEPENDENCIES"   => "list",
  99
 100                 "ENABLE"                => "bool",
 101
 102                 "MANPAGE"               => "string",
 103
 104                 "PUBLIC_HEADERS"        => "list",
 105
 106                 "PUBLIC_PROTO_HEADER"   => "string",
 107                 "PRIVATE_PROTO_HEADER"  => "string",
 108
 109                 "CFLAGS"                => "list",
 110                 "LDFLAGS"               => "list",
 111                 "STANDARD_VISIBILITY"   => "string"
 112                 }
 113 };
 114
 115 use vars qw(@parsed_files);
 116
 117 @parsed_files = ();
 118
 119 sub _read_config_file
 120 {
 121         use File::Basename;
 122         use Cwd;
 123
 124         my $srcdir = shift;
 125         my $builddir = shift;
 126         my $filename = shift;
 127         my @dirlist;
 128
 129         # We need to change our working directory because config.mk files can
 130         # give shell commands as the argument to "include". These shell
 131         # commands can take arguments that are relative paths and we don't have
 132         # a way of sensibly rewriting these.
 133         my $cwd = getcwd;
 134         chomp $cwd;
 135
 136         if ($srcdir ne $builddir) {
 137                 # Push the builddir path on the front, so we prefer builddir
 138                 # to srcdir when the file exists in both.
 139                 @dirlist = ($builddir, $srcdir);
 140         } else {
 141                 @dirlist = ($srcdir);
 142         }
 143
 144         foreach my $d (@dirlist) {
 145                 my @lines;
 146                 my $basedir;
 147
 148                 chdir $cwd;
 149                 chdir $d;
 150
 151                 # We need to catch the exception from open in the case where
 152                 # the filename is actually a shell pipeline. Why is this
 153                 # different to opening a regular file? Because this is perl!
 154                 eval {
 155                         open(CONFIG_MK, "./$filename");
 156                         @lines = <CONFIG_MK>;
 157                         close(CONFIG_MK);
 158                 };
 159
 160                 chdir $cwd;
 161                 next unless (@lines);
 162
 163                 # I blame abartlett for this crazy hack -- jpeach
 164                 if ($filename =~ /\|$/) {
 165                         $basedir = $builddir;
 166                 } else {
 167                         $basedir = dirname($filename);
 168                         push(@parsed_files, $filename);
 169                 }
 170                 $basedir =~ s!^($builddir|$srcdir)[/]!!;
 171                 return ($filename, $basedir, @lines);
 172         }
 173
 174         chdir $cwd;
 175         return;
 176 }
 177
 178 ###########################################################
 179 # The parsing function which parses the file
 180 #
 181 # $result = _parse_config_mk($input, $srcdir, $builddir, $filename)
 182 #
 183 # $filename -   the path of the config.mk file
 184 #               which should be parsed
 185 sub run_config_mk($$$$)
 186 {
 187         sub run_config_mk($$$$);
 188         my ($input, $srcdir, $builddir, $filename) = @_;
 189         my $result;
 190         my $linenum = -1;
 191         my $infragment = 0;
 192         my $section = "GLOBAL";
 193         my $makefile = "";
 194
 195         my $basedir;
 196
 197         my $parsing_file;
 198         my @lines;
 199
 200         $ENV{builddir} = $builddir;
 201         $ENV{srcdir} = $srcdir;
 202
 203         ($parsing_file, $basedir, @lines) =
 204             _read_config_file($srcdir, $builddir, $filename);
 205
 206         die ("$0: can't open '$filename'")
 207                 unless ($parsing_file and $basedir and @lines);
 208
 209         my $line = "";
 210         my $prev = "";
 211
 212         # Emit a line that lets us match up final makefile output with the
 213         # corresponding input files. The curlies are so you can match the
 214         # BEGIN/END pairs in a text editor.
 215         $makefile .= "# BEGIN{ $parsing_file\n";
 216
 217         foreach (@lines) {
 218                 $linenum++;
 219
 220                 # lines beginning with '#' are ignored
 221                 next if (/^\#.*$/);
 222
 223                 if (/^(.*)\\$/) {
 224                         $prev .= $1;
 225                         next;
 226                 } else {
 227                         $line = "$prev$_";
 228                         $prev = "";
 229                 }
 230
 231                 if ($line =~ /^\[([-a-zA-Z0-9_:]+)\][\t ]*$/)
 232                 {
 233                         $section = $1;
 234                         $infragment = 0;
 235                         next;
 236                 }
 237
 238                 # include
 239                 if ($line =~ /^include (.*)$/) {
 240                         my $subfile= $1;
 241                         my $subdir = dirname($filename);
 242                         $subdir =~ s/^\.$//g;
 243                         $subdir =~ s/^\.\///g;
 244                         $subdir .= "/" if ($subdir ne "");
 245                         $makefile .= run_config_mk($input, $srcdir, $builddir, $subdir.$subfile);
 246                         next;
 247                 }
 248
 249                 # empty line
 250                 if ($line =~ /^[ \t]*$/) {
 251                         $section = "GLOBAL";
 252                         if ($infragment) { $makefile.="\n"; }
 253                         next;
 254                 }
 255
 256                 # global stuff is considered part of the makefile
 257                 if ($section eq "GLOBAL") {
 258                         if (!$infragment) { $makefile.="\n"; }
 259                         $makefile .= $line;
 260                         $infragment = 1;
 261                         next;
 262                 }
 263
 264
 265                 # Assignment
 266                 if ($line =~ /^([a-zA-Z0-9_]+)[\t ]*=(.*)$/) {
 267                         $result->{$section}{$1}{VAL} = $2;
 268                         $result->{$section}{$1}{KEY} = $1;
 269
 270                         next;
 271                 }
 272
 273                 die("$parsing_file:$linenum: Bad line while parsing $parsing_file");
 274         }
 275
 276         $makefile .= "# }END $parsing_file\n";
 277
 278         foreach my $section (keys %{$result}) {
 279                 my ($type, $name) = split(/::/, $section, 2);
 280
 281                 my $sectype = $section_types->{$type};
 282                 if (not defined($sectype)) {
 283                         die($parsing_file.":[".$section."] unknown section type \"".$type."\"!");
 284                 }
 285
 286                 $input->{$name}{NAME} = $name;
 287                 $input->{$name}{TYPE} = $type;
 288                 $input->{$name}{MK_FILE} = $parsing_file;
 289                 $input->{$name}{BASEDIR} = $basedir;
 290
 291                 foreach my $key (values %{$result->{$section}}) {
 292                         $key->{VAL} = smb_build::input::strtrim($key->{VAL});
 293                         my $vartype = $sectype->{$key->{KEY}};
 294                         if (not defined($vartype)) {
 295                                 die($parsing_file.":[".$section."]: unknown attribute type \"$key->{KEY}\"!");
 296                         }
 297                         if ($vartype eq "string") {
 298                                 $input->{$name}{$key->{KEY}} = $key->{VAL};
 299                         } elsif ($vartype eq "list") {
 300                                 $input->{$name}{$key->{KEY}} = [smb_build::input::str2array($key->{VAL})];
 301                         } elsif ($vartype eq "bool") {
 302                                 if (($key->{VAL} ne "YES") and ($key->{VAL} ne "NO")) {
 303                                         die("Invalid value for bool attribute $key->{KEY}: $key->{VAL} in section $section");
 304                                 }
 305                                 $input->{$name}{$key->{KEY}} = $key->{VAL};
 306                         }
 307                 }
 308         }
 309
 310         return $makefile;
 311 }
 312
 313 1;