kconfig: Fix streamline_config to read multi line deps in Kconfig files

I noticed that some Kconfig files have multi line dependencies
that continue with a backslash. Those dependencies on the next
line will be missed by streamline_config.

For example:

config CS89x0
	tristate "CS89x0 support"
	depends on NET_ETHERNET && (ISA || EISA || MACH_IXDP2351 \
		|| ARCH_IXDP2X01 || MACH_MX31ADS)

The "|| ARCH_IXDP2X01 || MACH_MX31ADS)" will not be processed.

This patch adds code to handle this case.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 18 insertions, 1 deletions

diff --git a/scripts/kconfig/streamline_config.pl b/scripts/kconfig/streamline_config.pl
index 883748c70d28..ebba407ac5eb 100644
--- a/scripts/kconfig/streamline_config.pl
+++ b/scripts/kconfig/streamline_config.pl
@@ -125,7 +125,6 @@ my %selects;
 my %prompts;
 my %objects;
 my $var;
-my $cont = 0;
 my $iflevel = 0;
 my @ifdeps;
 
@@ -139,6 +138,9 @@ sub read_kconfig {
     my $config;
     my @kconfigs;
 
+    my $cont = 0;
+    my $line;
+
     my $source = "$ksource/$kconfig";
     my $last_source = "";
 
@@ -153,6 +155,19 @@ sub read_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] = $1;
@@ -230,6 +245,8 @@ if ($kconfig) {
 # Read all Makefiles to map the configs to the objects
 foreach my $makefile (@makefiles) {
 
+    my $cont = 0;
+
     open(MIN,$makefile) || die "Can't open $makefile";
     while (<MIN>) {
         my $objs;