Bug#863914: linux-libc-dev: Install separate from /usr/include

[Zack Weinberg <zackw@panix.com>]

On Sat, Jun 3, 2017 at 5:05 PM, Ben Hutchings <ben@decadent.org.uk> wrote:
>> It would be much easier to arrange
>> this if the kernel's headers were installed in a location separate from
>> /usr/include and then symlinked into /usr/include.  (It would be fine to
>> symlink just the directories.)
>
> I don't understand how this would help.

Suppose there exists a directory (let's call it
/usr/src/linux/include, just for concreteness) that contains all the
kernel headers and no other headers. Then my Makefiles can pass
-nostdinc -isystem $(gcc -print-file-name=include) -isystem
/usr/src/linux/include in CFLAGS to see only the kernel's headers and
the compiler's headers. Without such a directory, the only way to get
the same effect that I can think of is to manually create that
directory somehow. It'd be much easier to do this in linux-libc-dev,
which already knows what all the files are.

zw