#!/usr/bin/perl -w
#
-# Copywrite 2005-2009 - Steven Rostedt
+# Copyright 2005-2009 - Steven Rostedt
# Licensed under the terms of the GNU GPL License version 2
#
# It's simple enough to figure out how this works.
# mv config_strip .config
# make oldconfig
#
+use strict;
+use Getopt::Long;
+
my $config = ".config";
my $uname = `uname -r`;
find_config;
+# Parse options
+my $localmodconfig = 0;
+my $localyesconfig = 0;
+
+GetOptions("localmodconfig" => \$localmodconfig,
+ "localyesconfig" => \$localyesconfig);
+
# Get the build source and top level Kconfig file (passed in)
my $ksource = $ARGV[0];
my $kconfig = $ARGV[1];
+my $lsmod_file = $ENV{'LSMOD'};
+
+my @makefiles = `find $ksource -name Makefile 2>/dev/null`;
+chomp @makefiles;
-my @makefiles = `find $ksource -name Makefile`;
my %depends;
my %selects;
my %prompts;
my %objects;
my $var;
-my $cont = 0;
my $iflevel = 0;
my @ifdeps;
my $config;
my @kconfigs;
- open(KIN, "$ksource/$kconfig") || die "Can't open $kconfig";
+ my $cont = 0;
+ my $line;
+
+ my $source = "$ksource/$kconfig";
+ my $last_source = "";
+
+ # Check for any environment variables used
+ while ($source =~ /\$(\w+)/ && $last_source ne $source) {
+ my $env = $1;
+ $last_source = $source;
+ $source =~ s/\$$env/$ENV{$env}/;
+ }
+
+ open(KIN, "$source") || die "Can't open $kconfig";
while (<KIN>) {
chomp;
+ # Make sure that lines ending with \ continue
+ if ($cont) {
+ $_ = $line . " " . $_;
+ }
+
+ if (s/\\$//) {
+ $cont = 1;
+ $line = $_;
+ next;
+ }
+
+ $cont = 0;
+
# collect any Kconfig sources
if (/^source\s*"(.*)"/) {
$kconfigs[$#kconfigs+1] = $1;
}
# configs found
- if (/^\s*config\s+(\S+)\s*$/) {
+ if (/^\s*(menu)?config\s+(\S+)\s*$/) {
$state = "NEW";
- $config = $1;
+ $config = $2;
for (my $i = 0; $i < $iflevel; $i++) {
if ($i) {
# configs without prompts must be selected
} elsif ($state ne "NONE" && /^\s*tristate\s\S/) {
# note if the config has a prompt
- $prompt{$config} = 1;
+ $prompts{$config} = 1;
# Check for if statements
} elsif (/^if\s+(.*\S)\s*$/) {
read_kconfig($kconfig);
}
+sub convert_vars {
+ my ($line, %vars) = @_;
+
+ my $process = "";
+
+ while ($line =~ s/^(.*?)(\$\((.*?)\))//) {
+ my $start = $1;
+ my $variable = $2;
+ my $var = $3;
+
+ if (defined($vars{$var})) {
+ $process .= $start . $vars{$var};
+ } else {
+ $process .= $start . $variable;
+ }
+ }
+
+ $process .= $line;
+
+ return $process;
+}
+
# Read all Makefiles to map the configs to the objects
foreach my $makefile (@makefiles) {
- chomp $makefile;
+
+ my $line = "";
+ my %make_vars;
open(MIN,$makefile) || die "Can't open $makefile";
while (<MIN>) {
+ # if this line ends with a backslash, continue
+ chomp;
+ if (/^(.*)\\$/) {
+ $line .= $1;
+ next;
+ }
+
+ $line .= $_;
+ $_ = $line;
+ $line = "";
+
my $objs;
- # is this a line after a line with a backslash?
- if ($cont && /(\S.*)$/) {
- $objs = $1;
- }
- $cont = 0;
+ $_ = convert_vars($_, %make_vars);
# collect objects after obj-$(CONFIG_FOO_BAR)
if (/obj-\$\((CONFIG_[^\)]*)\)\s*[+:]?=\s*(.*)/) {
$var = $1;
$objs = $2;
+
+ # check if variables are set
+ } elsif (/^\s*(\S+)\s*[:]?=\s*(.*\S)/) {
+ $make_vars{$1} = $2;
}
if (defined($objs)) {
- # test if the line ends with a backslash
- if ($objs =~ m,(.*)\\$,) {
- $objs = $1;
- $cont = 1;
- }
-
foreach my $obj (split /\s+/,$objs) {
$obj =~ s/-/_/g;
if ($obj =~ /(.*)\.o$/) {
- # Objects may bes enabled by more than one config.
+ # Objects may be enabled by more than one config.
# Store configs in an array.
my @arr;
my %modules;
-# see what modules are loaded on this system
-my $lsmod;
-
-foreach $dir ( ("/sbin", "/bin", "/usr/sbin", "/usr/bin") ) {
- if ( -x "$dir/lsmod" ) {
- $lsmod = "$dir/lsmod";
- last;
+if (defined($lsmod_file)) {
+ if ( ! -f $lsmod_file) {
+ if ( -f $ENV{'objtree'}."/".$lsmod_file) {
+ $lsmod_file = $ENV{'objtree'}."/".$lsmod_file;
+ } else {
+ die "$lsmod_file not found";
+ }
+ }
+ if ( -x $lsmod_file) {
+ # the file is executable, run it
+ open(LIN, "$lsmod_file|");
+ } else {
+ # Just read the contents
+ open(LIN, "$lsmod_file");
}
+} else {
+
+ # see what modules are loaded on this system
+ my $lsmod;
+
+ foreach my $dir ( ("/sbin", "/bin", "/usr/sbin", "/usr/bin") ) {
+ if ( -x "$dir/lsmod" ) {
+ $lsmod = "$dir/lsmod";
+ last;
+ }
}
-if (!defined($lsmod)) {
- # try just the path
- $lsmod = "lsmod";
+ if (!defined($lsmod)) {
+ # try just the path
+ $lsmod = "lsmod";
+ }
+
+ open(LIN,"$lsmod|") || die "Can not call lsmod with $lsmod";
}
-open(LIN,"$lsmod|") || die "Can not call lsmod with $lsmod";
while (<LIN>) {
next if (/^Module/); # Skip the first line.
if (/^(\S+)/) {
my %configs;
foreach my $module (keys(%modules)) {
if (defined($objects{$module})) {
- @arr = @{$objects{$module}};
+ my @arr = @{$objects{$module}};
foreach my $conf (@arr) {
$configs{$conf} = $module;
}
parse_config_dep_select $depends{$config};
}
- if (defined($prompt{$config}) || !defined($selects{$config})) {
+ if (defined($prompts{$config}) || !defined($selects{$config})) {
next;
}
if (/^(CONFIG.*)=(m|y)/) {
if (defined($configs{$1})) {
- $setconfigs{$1} = $2;
+ if ($localyesconfig) {
+ $setconfigs{$1} = 'y';
+ } else {
+ $setconfigs{$1} = $2;
+ }
} elsif ($2 eq "m") {
print "# $1 is not set\n";
next;