Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next

* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next: (25 commits)
  setlocalversion: do not describe if there is nothing to describe
  kconfig: fix typos: "Suport" -> "Support"
  kconfig: make defconfig is no longer chatty
  kconfig: make oldconfig is now less chatty
  kconfig: speed up all*config + randconfig
  kconfig: set all new symbols automatically
  kconfig: add diffconfig utility
  kbuild: remove Module.markers during mrproper
  kbuild: sparse needs CF not CHECKFLAGS
  kernel-doc: handle/strip __init
  vmlinux.lds: move __attribute__((__cold__)) functions back into final .text section
  init: fix URL of "The GNU Accounting Utilities"
  kbuild: add arch/$ARCH/include to search path
  kbuild: asm symlink support for arch/$ARCH/include
  kbuild: support arch/$ARCH/include for tags, cscope
  kbuild: prepare headers_* for arch/$ARCH/include
  kbuild: install all headers when arch is changed
  kbuild: make clean removes *.o.* as well
  kbuild: optimize headers_* targets
  kbuild: only one call for include/ in make headers_*
  ...

1 files changed, 56 insertions, 0 deletions

diff --git a/scripts/headers_check.pl b/scripts/headers_check.pl
new file mode 100644
index 000000000000..15d53a6b1a1f
--- /dev/null
+++ b/scripts/headers_check.pl
@@ -0,0 +1,56 @@
+#!/usr/bin/perl
+#
+# headers_check.pl execute a number of trivial consistency checks
+#
+# Usage: headers_check.pl dir [files...]
+# dir:   dir to look for included files
+# arch:  architecture
+# files: list of files to check
+#
+# The script reads the supplied files line by line and:
+#
+# 1) for each include statement it checks if the
+#    included file actually exists.
+#    Only include files located in asm* and linux* are checked.
+#    The rest are assumed to be system include files.
+#
+# 2) TODO: check for leaked CONFIG_ symbols
+
+use strict;
+use warnings;
+
+my ($dir, $arch, @files) = @ARGV;
+
+my $ret = 0;
+my $line;
+my $lineno = 0;
+my $filename;
+
+foreach my $file (@files) {
+        $filename = $file;
+        open(my $fh, '<', "$filename") or die "$filename: $!\n";
+        $lineno = 0;
+        while ($line = <$fh>) {
+                $lineno++;
+                check_include();
+        }
+        close $fh;
+}
+exit $ret;
+
+sub check_include
+{
+        if ($line =~ m/^\s*#\s*include\s+<((asm|linux).*)>/) {
+                my $inc = $1;
+                my $found;
+                $found = stat($dir . "/" . $inc);
+                if (!$found) {
+                        $inc =~ s#asm/#asm-$arch/#;
+                        $found = stat($dir . "/" . $inc);
+                }
+                if (!$found) {
+                        printf STDERR "$filename:$lineno: included file '$inc' is not exported\n";
+                        $ret = 1;
+                }
+        }
+}