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References: <20180606173233.28080-1-berrange@redhat.com>
	<20180606173233.28080-4-berrange@redhat.com>
From: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= <f4bug@amsat.org>
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Date: Wed, 6 Jun 2018 14:45:37 -0300
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Subject: Re: [Qemu-devel] [PATCH v2 3/3] util: remove redundant include of
 glib.h
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To: "=?UTF-8?Q?Daniel_P._Berrang=c3=a9?=" <berrange@redhat.com>, qemu-devel@nongnu.org
Cc: Peter Maydell <peter.maydell@linaro.org>, Olaf Hering <olaf@aepfle.de>, Stefan Berger <stefanb@linux.vnet.ibm.com>, Michael Roth <mdroth@linux.vnet.ibm.com>, Peter Xu <peterx@redhat.com>, Markus Armbruster <armbru@redhat.com>, Stefan Hajnoczi <stefanha@redhat.com>, Thomas Huth <thuth@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>

On 06/06/2018 02:32 PM, 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)
> 
> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

> ---
>  util/iova-tree.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/util/iova-tree.c b/util/iova-tree.c
> index 2d9cebfc89..d39cd8bb29 100644
> --- a/util/iova-tree.c
> +++ b/util/iova-tree.c
> @@ -9,7 +9,6 @@
>   * This work is licensed under the terms of the GNU GPL, version 2 or later.
>   */
>  
> -#include <glib.h>
>  #include "qemu/iova-tree.h"
>  
>  struct IOVATree {
>