Re: [Qemu-devel] [PATCH v3 1/3] util: remove redundant include of glib.h and add osdep.h

[Peter Xu <peterx@redhat.com>]

On Fri, Jun 08, 2018 at 02:16:02PM +0100, Daniel P. Berrangé wrote:
> Code must only ever include glib.h indirectly via the glib-compat.h
> header file, because we will need some macros set before glib.h is
> pulled in. Adding extra includes of glib.h will (soon) cause compile
> failures such as:
> 
> In file included from /home/berrange/src/virt/qemu/include/qemu/osdep.h:107,
>                  from /home/berrange/src/virt/qemu/include/qemu/iova-tree.h:26,
>                  from util/iova-tree.c:13:
> /home/berrange/src/virt/qemu/include/glib-compat.h:22: error: "GLIB_VERSION_MIN_REQUIRED" redefined [-Werror]
>  #define GLIB_VERSION_MIN_REQUIRED GLIB_VERSION_2_40
> 
> In file included from /usr/include/glib-2.0/glib/gtypes.h:34,
>                  from /usr/include/glib-2.0/glib/galloca.h:32,
>                  from /usr/include/glib-2.0/glib.h:30,
>                  from util/iova-tree.c:12:
> /usr/include/glib-2.0/glib/gversionmacros.h:237: note: this is the location of the previous definition
>  # define GLIB_VERSION_MIN_REQUIRED      (GLIB_VERSION_CUR_STABLE)
> 
> Furthermore, the osdep.h include should always be done directly from the
> .c file rather than indirectly via any .h file.
> 
> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>

Reviewed-by: Peter Xu <peterx@redhat.com>

-- 
Peter Xu