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

["Daniel P. Berrangé" <berrange@redhat.com>]

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>
---
 include/qemu/iova-tree.h | 1 -
 util/iova-tree.c         | 2 +-
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/include/qemu/iova-tree.h b/include/qemu/iova-tree.h
index b061932097..b66cf93c4b 100644
--- a/include/qemu/iova-tree.h
+++ b/include/qemu/iova-tree.h
@@ -23,7 +23,6 @@
  * for the thread safety issue.
  */
 
-#include "qemu/osdep.h"
 #include "exec/memory.h"
 #include "exec/hwaddr.h"
 
diff --git a/util/iova-tree.c b/util/iova-tree.c
index 2d9cebfc89..7990692cbd 100644
--- a/util/iova-tree.c
+++ b/util/iova-tree.c
@@ -9,7 +9,7 @@
  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  */
 
-#include <glib.h>
+#include "qemu/osdep.h"
 #include "qemu/iova-tree.h"
 
 struct IOVATree {
-- 
2.17.0