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Diffstat (limited to 'scripts/kconfig/streamline_config.pl')
-rw-r--r--scripts/kconfig/streamline_config.pl109
1 files changed, 97 insertions, 12 deletions
diff --git a/scripts/kconfig/streamline_config.pl b/scripts/kconfig/streamline_config.pl
index 0d800820c3c..fd81fc33d63 100644
--- a/scripts/kconfig/streamline_config.pl
+++ b/scripts/kconfig/streamline_config.pl
@@ -42,6 +42,8 @@
# mv config_strip .config
# make oldconfig
#
+use strict;
+
my $config = ".config";
my $uname = `uname -r`;
@@ -113,14 +115,18 @@ find_config;
# Get the build source and top level Kconfig file (passed in)
my $ksource = $ARGV[0];
my $kconfig = $ARGV[1];
+my $lsmod_file = $ARGV[2];
+
+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;
# prevent recursion
my %read_kconfigs;
@@ -132,19 +138,54 @@ sub read_kconfig {
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) {
+ $depends{$config} .= " " . $ifdeps[$i];
+ } else {
+ $depends{$config} = $ifdeps[$i];
+ }
+ $state = "DEP";
+ }
# collect the depends for the config
} elsif ($state eq "NEW" && /^\s*depends\s+on\s+(.*)$/) {
@@ -164,7 +205,22 @@ sub read_kconfig {
# configs without prompts must be selected
} elsif ($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*$/) {
+ my $deps = $1;
+ # remove beginning and ending non text
+ $deps =~ s/^[^a-zA-Z0-9_]*//;
+ $deps =~ s/[^a-zA-Z0-9_]*$//;
+
+ my @deps = split /[^a-zA-Z0-9_]+/, $deps;
+
+ $ifdeps[$iflevel++] = join ':', @deps;
+
+ } elsif (/^endif/) {
+
+ $iflevel-- if ($iflevel);
# stop on "help"
} elsif (/^\s*help\s*$/) {
@@ -188,7 +244,8 @@ if ($kconfig) {
# Read all Makefiles to map the configs to the objects
foreach my $makefile (@makefiles) {
- chomp $makefile;
+
+ my $cont = 0;
open(MIN,$makefile) || die "Can't open $makefile";
while (<MIN>) {
@@ -215,7 +272,7 @@ foreach my $makefile (@makefiles) {
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;
@@ -237,8 +294,36 @@ foreach my $makefile (@makefiles) {
my %modules;
-# see what modules are loaded on this system
-open(LIN,"/sbin/lsmod|") || die "Cant lsmod";
+if (defined($lsmod_file)) {
+ if ( ! -f $lsmod_file) {
+ die "$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
+ $lsmod = "lsmod";
+ }
+
+ open(LIN,"$lsmod|") || die "Can not call lsmod with $lsmod";
+}
+
while (<LIN>) {
next if (/^Module/); # Skip the first line.
if (/^(\S+)/) {
@@ -252,7 +337,7 @@ close (LIN);
my %configs;
foreach my $module (keys(%modules)) {
if (defined($objects{$module})) {
- @arr = @{$objects{$module}};
+ my @arr = @{$objects{$module}};
foreach my $conf (@arr) {
$configs{$conf} = $module;
}
@@ -307,7 +392,7 @@ while ($repeat) {
parse_config_dep_select $depends{$config};
}
- if (defined($prompt{$config}) || !defined($selects{$config})) {
+ if (defined($prompts{$config}) || !defined($selects{$config})) {
next;
}