Re-export header files only if either they or their controlling Kbuild
file has actually changed. Also allow for similar dependencies with
'headers_check', once we properly create the dependencies for those.
#!/bin/sh
for FILE in `grep '^[ \t]*#[ \t]*include[ \t]*<' $2 | cut -f2 -d\< | cut -f1 -d\> | egrep ^linux\|^asm` ; do
if [ ! -r $1/$FILE ]; then
echo $2 requires $FILE, which does not exist in exported headers
exit 1
fi
done
# FIXME: List dependencies into $3
touch $3
