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# Samba Build System
# - config.mk parsing functions
#
# Copyright (C) Stefan (metze) Metzmacher 2004
# Copyright (C) Jelmer Vernooij 2005
# Released under the GNU GPL
#
package smb_build::config_mk;
use smb_build::input;
use File::Basename;
use strict;
my $section_types = {
"EXT_LIB" => {
"LIBS" => "list",
"CFLAGS" => "list",
"CPPFLAGS" => "list",
"LDFLAGS" => "list",
},
"PYTHON" => {
SWIG_FILE => "string",
"PRIVATE_DEPENDENCIES" => "list",
"PUBLIC_DEPENDENCIES" => "list",
"ENABLE" => "bool",
"LDFLAGS" => "list",
"CFLAGS" => "list",
},
"SUBSYSTEM" => {
"PRIVATE_DEPENDENCIES" => "list",
"PUBLIC_DEPENDENCIES" => "list",
"ENABLE" => "bool",
"PRIVATE_PROTO_HEADER" => "string",
"CFLAGS" => "list",
"LDFLAGS" => "list",
"STANDARD_VISIBILITY" => "string",
"INIT_FUNCTION_SENTINEL" => "string"
},
"MODULE" => {
"SUBSYSTEM" => "string",
"INIT_FUNCTION" => "string",
"PRIVATE_DEPENDENCIES" => "list",
"ALIASES" => "list",
"ENABLE" => "bool",
"OUTPUT_TYPE" => "list",
"PRIVATE_PROTO_HEADER" => "string",
"CFLAGS" => "list"
},
"BINARY" => {
"PRIVATE_DEPENDENCIES" => "list",
"ENABLE" => "bool",
"INSTALLDIR" => "string",
"PRIVATE_PROTO_HEADER" => "string",
"CFLAGS" => "list",
"LDFLAGS" => "list",
"STANDARD_VISIBILITY" => "string",
"USE_HOSTCC" => "bool"
},
"LIBRARY" => {
"VERSION" => "string",
"SO_VERSION" => "string",
"LIBRARY_REALNAME" => "string",
"INIT_FUNCTION_TYPE" => "string",
"INIT_FUNCTION_SENTINEL" => "string",
"OUTPUT_TYPE" => "list",
"PRIVATE_DEPENDENCIES" => "list",
"PUBLIC_DEPENDENCIES" => "list",
"ENABLE" => "bool",
"PRIVATE_PROTO_HEADER" => "string",
"CFLAGS" => "list",
"LDFLAGS" => "list",
"STANDARD_VISIBILITY" => "string"
}
};
use vars qw(@parsed_files);
@parsed_files = ();
sub _read_config_file
{
use File::Basename;
use Cwd;
my $srcdir = shift;
my $builddir = shift;
my $filename = shift;
my @dirlist;
# We need to change our working directory because config.mk files can
# give shell commands as the argument to "include". These shell
# commands can take arguments that are relative paths and we don't have
# a way of sensibly rewriting these.
my $cwd = getcwd;
chomp $cwd;
if ($srcdir ne $builddir) {
# Push the builddir path on the front, so we prefer builddir
# to srcdir when the file exists in both.
@dirlist = ($builddir, $srcdir);
} else {
@dirlist = ($srcdir);
}
foreach my $d (@dirlist) {
my @lines;
my $basedir;
chdir $cwd;
chdir $d;
# We need to catch the exception from open in the case where
# the filename is actually a shell pipeline. Why is this
# different to opening a regular file? Because this is perl!
eval {
open(CONFIG_MK, "./$filename");
@lines = <CONFIG_MK>;
close(CONFIG_MK);
};
chdir $cwd;
next unless (@lines);
# I blame abartlett for this crazy hack -- jpeach
if ($filename =~ /\|$/) {
$basedir = $builddir;
} else {
$basedir = dirname($filename);
push(@parsed_files, $filename);
}
$basedir =~ s!^($builddir|$srcdir)[/]!!;
return ($filename, $basedir, @lines);
}
chdir $cwd;
return;
}
###########################################################
# The parsing function which parses the file
#
# $result = _parse_config_mk($input, $srcdir, $builddir, $filename)
#
# $filename - the path of the config.mk file
# which should be parsed
sub run_config_mk($$$$)
{
sub run_config_mk($$$$);
my ($input, $srcdir, $builddir, $filename) = @_;
my $result;
my $linenum = -1;
my $infragment = 0;
my $section = "GLOBAL";
my $makefile = "";
my $basedir;
my $parsing_file;
my @lines;
$ENV{builddir} = $builddir;
$ENV{srcdir} = $srcdir;
($parsing_file, $basedir, @lines) =
_read_config_file($srcdir, $builddir, $filename);
die ("$0: can't open '$filename'")
unless ($parsing_file and $basedir and @lines);
my $line = "";
my $prev = "";
# Emit a line that lets us match up final makefile output with the
# corresponding input files. The curlies are so you can match the
# BEGIN/END pairs in a text editor.
$makefile .= "# BEGIN{ $parsing_file\n";
foreach (@lines) {
$linenum++;
# lines beginning with '#' are ignored
next if (/^\#.*$/);
if (/^(.*)\\$/) {
$prev .= $1;
next;
} else {
$line = "$prev$_";
$prev = "";
}
if ($line =~ /^\[([-a-zA-Z0-9_:]+)\][\t ]*$/)
{
$section = $1;
$infragment = 0;
$result->{$section}{EXISTS}{KEY} = "EXISTS";
$result->{$section}{EXISTS}{VAL} = 1;
next;
}
# include
if ($line =~ /^mkinclude (.*)$/) {
my $subfile= $1;
my $subdir = dirname($filename);
$subdir =~ s/^\.$//g;
$subdir =~ s/^\.\///g;
$subdir .= "/" if ($subdir ne "");
$makefile .= "basedir := $subdir\n";
$makefile .= run_config_mk($input, $srcdir, $builddir, $subdir.$subfile);
next;
}
# empty line
if ($line =~ /^[ \t]*$/) {
$section = "GLOBAL";
if ($infragment) { $makefile.="\n"; }
next;
}
# global stuff is considered part of the makefile
if ($section eq "GLOBAL") {
if (!$infragment) { $makefile.="\n"; }
$makefile .= $line;
$infragment = 1;
next;
}
# Assignment
if ($line =~ /^([a-zA-Z0-9_]+)[\t ]*=(.*)$/) {
$result->{$section}{$1}{VAL} = $2;
$result->{$section}{$1}{KEY} = $1;
next;
}
die("$parsing_file:$linenum: Bad line while parsing $parsing_file");
}
$makefile .= "# }END $parsing_file\n";
foreach my $section (keys %{$result}) {
my ($type, $name) = split(/::/, $section, 2);
my $sectype = $section_types->{$type};
if (not defined($sectype)) {
die($parsing_file.":[".$section."] unknown section type \"".$type."\"!");
}
$input->{$name}{NAME} = $name;
$input->{$name}{TYPE} = $type;
$input->{$name}{MK_FILE} = $parsing_file;
$input->{$name}{BASEDIR} = $basedir;
foreach my $key (values %{$result->{$section}}) {
next if ($key->{KEY} eq "EXISTS");
$key->{VAL} = smb_build::input::strtrim($key->{VAL});
my $vartype = $sectype->{$key->{KEY}};
if (not defined($vartype)) {
die($parsing_file.":[".$section."]: unknown attribute type \"$key->{KEY}\"!");
}
if ($vartype eq "string") {
$input->{$name}{$key->{KEY}} = $key->{VAL};
} elsif ($vartype eq "list") {
$input->{$name}{$key->{KEY}} = [smb_build::input::str2array($key->{VAL})];
} elsif ($vartype eq "bool") {
if (($key->{VAL} ne "YES") and ($key->{VAL} ne "NO")) {
die("Invalid value for bool attribute $key->{KEY}: $key->{VAL} in section $section");
}
$input->{$name}{$key->{KEY}} = $key->{VAL};
}
}
}
return $makefile;
}
1;
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