building system fix: miropcm20 depends on sound/oss/aci.h

From: Mauro Carvalho Chehab <mchehab@infradead.org>

Most V4L/DVB hg tree users are just compiling using kernel headers.
This is bad, due to:
	1) the lack of support for make *config
	2) the kernel itself have unknown patches from the distros
Anyway, it is useful to provide they some support.

This patch provides a "hack" for such users, by checking if the
sound/oss/aci.h file is present under kernel tree. If not, it will
disable miropcm20 and print a warning about the usage of a kernel-headers
only package.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 14 insertions, 0 deletions

diff --git a/v4l/scripts/make_kconfig.pl b/v4l/scripts/make_kconfig.pl
index 5f8866220..807fea2e6 100755
--- a/v4l/scripts/make_kconfig.pl
+++ b/v4l/scripts/make_kconfig.pl
@@ -400,6 +400,20 @@ close OUT;
 disable_config('DVB_AV7110_FIRMWARE');
 disable_config('DVB_CINERGYT2_TUNING');
 
+# Hack for check sound/oss/aci.h header
+
+my $mirodep="$kernel/sound/oss/aci.h";
+if (!open IN, $mirodep) {
+	my $key="RADIO_MIROPCM20";
+	printf "$key: $mirodep is missing.\n";
+	printf "It seems that you are using a kernel-headers only package\n";
+	printf "kernel-headers only won't provide you make menuconfig/xconfig/qconfig\n";
+
+	$kernopts{$key}='n';
+}
+close IN;
+
+# Recursively check for broken dependencies
 my $i;
 do {
 	$i=0;