source/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                 "INIT_FUNCTION_SENTINEL" => "string"
  49                 },
  50         "MODULE" => {
  51                 "SUBSYSTEM"             => "string",
  52
  53                 "INIT_FUNCTION"         => "string",
  54                 "OBJ_FILES"             => "list",
  55
  56                 "PRIVATE_DEPENDENCIES"  => "list",
  57
  58                 "ALIASES" => "list",
  59
  60                 "ENABLE"                => "bool",
  61
  62                 "OUTPUT_TYPE"           => "list",
  63
  64                 "MANPAGE"               => "string",
  65                 "PRIVATE_PROTO_HEADER"  => "string",
  66
  67                 "CFLAGS"                => "list"
  68                 },
  69         "BINARY" => {
  70                 "OBJ_FILES"             => "list",
  71
  72                 "PRIVATE_DEPENDENCIES"  => "list",
  73
  74                 "ENABLE"                => "bool",
  75
  76                 "MANPAGE"               => "string",
  77                 "INSTALLDIR"            => "string",
  78                 "PRIVATE_PROTO_HEADER"  => "string",
  79
  80                 "CFLAGS"                => "list",
  81                 "LDFLAGS"               => "list",
  82                 "STANDARD_VISIBILITY"   => "string",
  83
  84                 "USE_HOSTCC"            => "bool"
  85                 },
  86         "LIBRARY" => {
  87                 "VERSION"               => "string",
  88                 "SO_VERSION"            => "string",
  89                 "LIBRARY_REALNAME" => "string",
  90
  91                 "INIT_FUNCTION_TYPE"    => "string",
  92                 "INIT_FUNCTION_SENTINEL" => "string",
  93                 "OUTPUT_TYPE"           => "list",
  94
  95                 "OBJ_FILES"             => "list",
  96
  97                 "DESCRIPTION"           => "string",
  98
  99                 "PRIVATE_DEPENDENCIES"  => "list",
 100                 "PUBLIC_DEPENDENCIES"   => "list",
 101
 102                 "ENABLE"                => "bool",
 103
 104                 "MANPAGE"               => "string",
 105
 106                 "PUBLIC_HEADERS"        => "list",
 107
 108                 "PUBLIC_PROTO_HEADER"   => "string",
 109                 "PRIVATE_PROTO_HEADER"  => "string",
 110
 111                 "CFLAGS"                => "list",
 112                 "LDFLAGS"               => "list",
 113                 "STANDARD_VISIBILITY"   => "string"
 114                 }
 115 };
 116
 117 use vars qw(@parsed_files);
 118
 119 @parsed_files = ();
 120
 121 sub _read_config_file
 122 {
 123         use File::Basename;
 124         use Cwd;
 125
 126         my $srcdir = shift;
 127         my $builddir = shift;
 128         my $filename = shift;
 129         my @dirlist;
 130
 131         # We need to change our working directory because config.mk files can
 132         # give shell commands as the argument to "include". These shell
 133         # commands can take arguments that are relative paths and we don't have
 134         # a way of sensibly rewriting these.
 135         my $cwd = getcwd;
 136         chomp $cwd;
 137
 138         if ($srcdir ne $builddir) {
 139                 # Push the builddir path on the front, so we prefer builddir
 140                 # to srcdir when the file exists in both.
 141                 @dirlist = ($builddir, $srcdir);
 142         } else {
 143                 @dirlist = ($srcdir);
 144         }
 145
 146         foreach my $d (@dirlist) {
 147                 my @lines;
 148                 my $basedir;
 149
 150                 chdir $cwd;
 151                 chdir $d;
 152
 153                 # We need to catch the exception from open in the case where
 154                 # the filename is actually a shell pipeline. Why is this
 155                 # different to opening a regular file? Because this is perl!
 156                 eval {
 157                         open(CONFIG_MK, "./$filename");
 158                         @lines = <CONFIG_MK>;
 159                         close(CONFIG_MK);
 160                 };
 161
 162                 chdir $cwd;
 163                 next unless (@lines);
 164
 165                 # I blame abartlett for this crazy hack -- jpeach
 166                 if ($filename =~ /\|$/) {
 167                         $basedir = $builddir;
 168                 } else {
 169                         $basedir = dirname($filename);
 170                         push(@parsed_files, $filename);
 171                 }
 172                 $basedir =~ s!^($builddir|$srcdir)[/]!!;
 173                 return ($filename, $basedir, @lines);
 174         }
 175
 176         chdir $cwd;
 177         return;
 178 }
 179
 180 ###########################################################
 181 # The parsing function which parses the file
 182 #
 183 # $result = _parse_config_mk($input, $srcdir, $builddir, $filename)
 184 #
 185 # $filename -   the path of the config.mk file
 186 #               which should be parsed
 187 sub run_config_mk($$$$)
 188 {
 189         sub run_config_mk($$$$);
 190         my ($input, $srcdir, $builddir, $filename) = @_;
 191         my $result;
 192         my $linenum = -1;
 193         my $infragment = 0;
 194         my $section = "GLOBAL";
 195         my $makefile = "";
 196
 197         my $basedir;
 198
 199         my $parsing_file;
 200         my @lines;
 201
 202         $ENV{builddir} = $builddir;
 203         $ENV{srcdir} = $srcdir;
 204
 205         ($parsing_file, $basedir, @lines) =
 206             _read_config_file($srcdir, $builddir, $filename);
 207
 208         die ("$0: can't open '$filename'")
 209                 unless ($parsing_file and $basedir and @lines);
 210
 211         my $line = "";
 212         my $prev = "";
 213
 214         # Emit a line that lets us match up final makefile output with the
 215         # corresponding input files. The curlies are so you can match the
 216         # BEGIN/END pairs in a text editor.
 217         $makefile .= "# BEGIN{ $parsing_file\n";
 218         $makefile .= "dir = $basedir\n";
 219
 220         foreach (@lines) {
 221                 $linenum++;
 222
 223                 # lines beginning with '#' are ignored
 224                 next if (/^\#.*$/);
 225
 226                 if (/^(.*)\\$/) {
 227                         $prev .= $1;
 228                         next;
 229                 } else {
 230                         $line = "$prev$_";
 231                         $prev = "";
 232                 }
 233
 234                 if ($line =~ /^\[([-a-zA-Z0-9_:]+)\][\t ]*$/)
 235                 {
 236                         $section = $1;
 237                         $infragment = 0;
 238                         next;
 239                 }
 240
 241                 # include
 242                 if ($line =~ /^include (.*)$/) {
 243                         my $subfile= $1;
 244                         my $subdir = dirname($filename);
 245                         $subdir =~ s/^\.$//g;
 246                         $subdir =~ s/^\.\///g;
 247                         $subdir .= "/" if ($subdir ne "");
 248                         $makefile .= run_config_mk($input, $srcdir, $builddir, $subdir.$subfile);
 249                         next;
 250                 }
 251
 252                 # empty line
 253                 if ($line =~ /^[ \t]*$/) {
 254                         $section = "GLOBAL";
 255                         if ($infragment) { $makefile.="\n"; }
 256                         next;
 257                 }
 258
 259                 # global stuff is considered part of the makefile
 260                 if ($section eq "GLOBAL") {
 261                         if (!$infragment) { $makefile.="\n"; }
 262                         $makefile .= $line;
 263                         $infragment = 1;
 264                         next;
 265                 }
 266
 267
 268                 # Assignment
 269                 if ($line =~ /^([a-zA-Z0-9_]+)[\t ]*=(.*)$/) {
 270                         $result->{$section}{$1}{VAL} = $2;
 271                         $result->{$section}{$1}{KEY} = $1;
 272
 273                         next;
 274                 }
 275
 276                 die("$parsing_file:$linenum: Bad line while parsing $parsing_file");
 277         }
 278
 279         $makefile .= "# }END $parsing_file\n";
 280
 281         foreach my $section (keys %{$result}) {
 282                 my ($type, $name) = split(/::/, $section, 2);
 283
 284                 my $sectype = $section_types->{$type};
 285                 if (not defined($sectype)) {
 286                         die($parsing_file.":[".$section."] unknown section type \"".$type."\"!");
 287                 }
 288
 289                 $input->{$name}{NAME} = $name;
 290                 $input->{$name}{TYPE} = $type;
 291                 $input->{$name}{MK_FILE} = $parsing_file;
 292                 $input->{$name}{BASEDIR} = $basedir;
 293
 294                 foreach my $key (values %{$result->{$section}}) {
 295                         $key->{VAL} = smb_build::input::strtrim($key->{VAL});
 296                         my $vartype = $sectype->{$key->{KEY}};
 297                         if (not defined($vartype)) {
 298                                 die($parsing_file.":[".$section."]: unknown attribute type \"$key->{KEY}\"!");
 299                         }
 300                         if ($vartype eq "string") {
 301                                 $input->{$name}{$key->{KEY}} = $key->{VAL};
 302                         } elsif ($vartype eq "list") {
 303                                 $input->{$name}{$key->{KEY}} = [smb_build::input::str2array($key->{VAL})];
 304                         } elsif ($vartype eq "bool") {
 305                                 if (($key->{VAL} ne "YES") and ($key->{VAL} ne "NO")) {
 306                                         die("Invalid value for bool attribute $key->{KEY}: $key->{VAL} in section $section");
 307                                 }
 308                                 $input->{$name}{$key->{KEY}} = $key->{VAL};
 309                         }
 310                 }
 311         }
 312
 313         return $makefile;
 314 }
 315
 316 1;