kconfig/streamline-config.pl: Simplify backslash line concatination

Simplify the way lines ending with backslashes (continuation) in Makefiles
is parsed. This is needed to implement a necessary fix.

Tested-by: Thomas Lange <thomas-lange2@gmx.de>
Cc: stable@vger.kernel.org
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 12 insertions, 13 deletions

diff --git a/scripts/kconfig/streamline_config.pl b/scripts/kconfig/streamline_config.pl
index ec7afce4c88d..42ef5ea5ebdc 100644
--- a/scripts/kconfig/streamline_config.pl
+++ b/scripts/kconfig/streamline_config.pl
@@ -253,17 +253,22 @@ if ($kconfig) {
 # Read all Makefiles to map the configs to the objects
 foreach my $makefile (@makefiles) {
 
-    my $cont = 0;
+    my $line = "";
 
     open(MIN,$makefile) || die "Can't open $makefile";
     while (<MIN>) {
-        my $objs;
-
-        # is this a line after a line with a backslash?
-        if ($cont && /(\S.*)$/) {
-            $objs = $1;
+        # if this line ends with a backslash, continue
+        chomp;
+        if (/^(.*)\\$/) {
+            $line .= $1;
+            next;
         }
-        $cont = 0;
+
+        $line .= $_;
+        $_ = $line;
+        $line = "";
+
+        my $objs;
 
         # collect objects after obj-$(CONFIG_FOO_BAR)
         if (/obj-\$\((CONFIG_[^\)]*)\)\s*[+:]?=\s*(.*)/) {
@@ -271,12 +276,6 @@ foreach my $makefile (@makefiles) {
             $objs = $2;
         }
         if (defined($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$/) {