2 files changed, 69 insertions, 4 deletions

diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index 999e8a7d5bf7..186c46604d06 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -30,8 +30,17 @@ silentoldconfig: $(obj)/conf
         $(Q)mkdir -p include/generated
         $< -s $(Kconfig)
 
+# if no path is given, then use src directory to find file
+ifdef LSMOD
+LSMOD_F := $(LSMOD)
+ifeq ($(findstring /,$(LSMOD)),)
+  LSMOD_F := $(objtree)/$(LSMOD)
+endif
+endif
+
 localmodconfig: $(obj)/streamline_config.pl $(obj)/conf
-        $(Q)perl $< $(srctree) $(Kconfig) > .tmp.config
+        $(Q)mkdir -p include/generated
+        $(Q)perl $< $(srctree) $(Kconfig) $(LSMOD_F) > .tmp.config
         $(Q)if [ -f .config ]; then                             \
                         cmp -s .tmp.config .config ||           \
                         (mv -f .config .config.old.1;           \
@@ -45,7 +54,8 @@ localmodconfig: $(obj)/streamline_config.pl $(obj)/conf
         $(Q)rm -f .tmp.config
 
 localyesconfig: $(obj)/streamline_config.pl $(obj)/conf
-        $(Q)perl $< $(srctree) $(Kconfig) > .tmp.config
+        $(Q)mkdir -p include/generated
+        $(Q)perl $< $(srctree) $(Kconfig) $(LSMOD_F) > .tmp.config
         $(Q)sed -i s/=m/=y/ .tmp.config
         $(Q)if [ -f .config ]; then                             \
                         cmp -s .tmp.config .config ||           \
diff --git a/scripts/kconfig/streamline_config.pl b/scripts/kconfig/streamline_config.pl
index 0d800820c3cd..afbd54ac1d83 100644
--- a/scripts/kconfig/streamline_config.pl
+++ b/scripts/kconfig/streamline_config.pl
@@ -113,6 +113,7 @@ 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`;
 my %depends;
@@ -121,6 +122,8 @@ my %prompts;
 my %objects;
 my $var;
 my $cont = 0;
+my $iflevel = 0;
+my @ifdeps;
 
 # prevent recursion
 my %read_kconfigs;
@@ -146,6 +149,15 @@ sub read_kconfig {
             $state = "NEW";
             $config = $1;
 
+            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+(.*)$/) {
             $state = "DEP";
@@ -166,6 +178,21 @@ sub read_kconfig {
             # note if the config has a prompt
             $prompt{$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*$/) {
             $state = "NONE";
@@ -237,8 +264,36 @@ 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 $dir ( ("/sbin", "/bin", "/usr/sbin", "/usr/bin") ) {
+        if ( -x "$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+)/) {