[PATCH] config: Add pkgincludedir to Cflags

[Mark Wielaard]

On Fri, 2017-12-08 at 15:17 +0900, Namhyung Kim wrote:
> The libelf and libdw uses pkginclude_HEADERS but the pkg-config file
> misses to have it the Cflags.  This was a problem for libdw users since
> it gave nothing to include, but one needs to add /usr/include/elfutils
> directory to use the libdw.h header file.

I this really an issue?

libelf has two public headers which are placed in the includedir and so
should be simply included as #include <libelf.h> and #include <gelf.h>.

libdw does indeed put its headers in includdir/elfutils, but as far as
I know everybody includes them using that subdir, so #include
<elfutils/libdw.h> and #include <elfutils/libdwfl.h>, etc.

Wouldn't this change how people include the headers?
Do we want to change it?

Thanks,

Mark