v4l2-apps: fix v4l2-apps build and 'make firmware' warnings

From: Hans Verkuil <hverkuil@xs4all.nl>

- fix some warnings when creating/removing directories when running
  'make firmware'
- fix v4l2-apps build: copy and strip the linux/include headers first
  to avoid the kernel-specific constructs in the original headers.
  Update the include paths to point to the copy.

Priority: normal

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>

1 files changed, 30 insertions, 0 deletions

diff --git a/v4l/scripts/headers_convert.pl b/v4l/scripts/headers_convert.pl
new file mode 100644
index 000000000..800a453e1
--- /dev/null
+++ b/v4l/scripts/headers_convert.pl
@@ -0,0 +1,30 @@
+#!/usr/bin/perl
+#
+# headers_install prepare the listed header files for use in
+# user space and copy the files to their destination.
+#
+
+use strict;
+use warnings;
+
+foreach (@ARGV) {
+	my $file = $_;
+	my $tmpfile = $file . ".tmp";
+
+	open(my $infile, '<', "$file")
+		or die "$file: $!\n";
+	open(my $outfile, '>', "$tmpfile") or die "$tmpfile: $!\n";
+	while (my $line = <$infile>) {
+		$line =~ s/([\s(])__user\s/$1/g;
+		$line =~ s/([\s(])__force\s/$1/g;
+		$line =~ s/([\s(])__iomem\s/$1/g;
+		$line =~ s/\s__attribute_const__\s/ /g;
+		$line =~ s/\s__attribute_const__$//g;
+		$line =~ s/^#include <linux\/compiler.h>//;
+		printf $outfile "%s", $line;
+	}
+	close $outfile;
+	close $infile;
+	system "mv $tmpfile $file";
+}
+exit 0;