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* [PATCH 00/24] drm: add extern C guard for the UAPI headers
@ 2016-04-21 20:17 Emil Velikov
  2016-04-21 20:17 ` [PATCH 01/24] drm/amdgpu: add extern C guard for the UAPI header Emil Velikov
                   ` (25 more replies)
  0 siblings, 26 replies; 40+ messages in thread
From: Emil Velikov @ 2016-04-21 20:17 UTC (permalink / raw)
  To: dri-devel
  Cc: emil.l.velikov, David Howells, Laurent Pinchart, Daniel Vetter,
	Thomas Hellstrom, Tomi Valkeinen, Brian Paul, Ben Skeggs,
	Russell King, Dave Airlie, Andrzej Hajda, Michel Dänzer,
	Alex Deucher, Christian König

[Re-sending to the correct mailing list. Apologies if you've seen it already]

Hi all, David Howells

Dave Airlie pointed out that "polluting" the headers in a manner as seen 
with this series might not be too wise. David H, can we hear your view 
on the topic ?

Note that these headers are meant to be used by more than just Linux 
(various BSD and Solaris come to mind), making things more complicated.


The change:


As some of you may know there are some subtle distinctions between C and 
C++ structs/enums, thus one should wrap/annotate them roughly like below.


...
#if defined(__cplusplus)
extern "C" {
#endif

struct foo {
    int bar;
    ...
};

...

#if defined(__cplusplus)
}
#endif


In order to work around the lack of these users can wrap the header 
inclusion in the same way. For example:


...
#if defined(__cplusplus)
extern "C" {
#endif

#include <i915_drm.h>

#if defined(__cplusplus)
}
#endif


Yet we should avoid this approach, as it might cause issues [1] [2] [3]. 
Thus here is a series which systematically updates all the UAPI headers 
in one go.

I would prefer if we get this merged in one go. Daniel, is it possible 
to go through drm-misc ? The series is already based on it.

Maintainers, does this sound reasonable, can we get a few acks ?


Thanks
Emil

[1] http://developers.redhat.com/blog/2016/02/29/why-cstdlib-is-more-complicated-than-you-might-think/
[2] https://isocpp.org/wiki/faq/mixing-c-and-cpp
[3] http://www.oracle.com/technetwork/articles/servers-storage-dev/mixingcandcpluspluscode-305840.html

Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Andrzej Hajda <a.hajda@samsung.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Brian Paul <brianp@vmware.com>
Cc: Christian Gmeiner <christian.gmeiner@gmail.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: Erik Faye-Lund <kusmabite@gmail.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Michel Dänzer <michel.daenzer@amd.com>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Sinclair Yeh <syeh@vmware.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Thomas Hellstrom <thellstrom@vmware.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>


Emil Velikov (24):
  drm/amdgpu: add extern C guard for the UAPI header
  drm/armada: add extern C guard for the UAPI header
  drm: add extern C guard for the UAPI headers
  drm/etnaviv: add extern C guard for the UAPI header
  drm/exynos: add extern C guard for the UAPI header
  drm/i810: add extern C guard for the UAPI header
  drm/i915: add extern C guard for the UAPI header
  drm/mga: add extern C guard for the UAPI header
  drm/msm: add extern C guard for the UAPI header
  drm/nouveau: add extern C guard for the UAPI header
  drm/nouveau: drop drm/ prefix from include
  drm/omap: add extern C guard for the UAPI header
  drm/qxl: add extern C guard for the UAPI header
  drm/qxl: remove XXX comment from the UAPI header
  drm/r128: add extern C guard for the UAPI header
  drm/radeon: add extern C guard for the UAPI header
  drm/savage: add extern C guard for the UAPI header
  drm/sis: add extern C guard for the UAPI header
  drm/sis: add missing include drm.h for the UAPI header
  drm/tegra: add extern C guard for the UAPI header
  drm/vc4: add extern C guard for the UAPI header
  drm/via: add extern C guard for the UAPI header
  drm/virgl: add extern C guard for the UAPI header
  drm/vmwgfx: add extern C guard for the UAPI header

 include/uapi/drm/amdgpu_drm.h  |  8 ++++++++
 include/uapi/drm/armada_drm.h  |  8 ++++++++
 include/uapi/drm/drm.h         | 16 ++++++++++++++++
 include/uapi/drm/drm_fourcc.h  |  8 ++++++++
 include/uapi/drm/drm_mode.h    |  8 ++++++++
 include/uapi/drm/drm_sarea.h   |  8 ++++++++
 include/uapi/drm/etnaviv_drm.h |  8 ++++++++
 include/uapi/drm/exynos_drm.h  |  8 ++++++++
 include/uapi/drm/i810_drm.h    |  8 ++++++++
 include/uapi/drm/i915_drm.h    |  8 ++++++++
 include/uapi/drm/mga_drm.h     |  8 ++++++++
 include/uapi/drm/msm_drm.h     |  8 ++++++++
 include/uapi/drm/nouveau_drm.h | 10 +++++++++-
 include/uapi/drm/omap_drm.h    |  8 ++++++++
 include/uapi/drm/qxl_drm.h     |  9 ++++++++-
 include/uapi/drm/r128_drm.h    |  8 ++++++++
 include/uapi/drm/radeon_drm.h  |  8 ++++++++
 include/uapi/drm/savage_drm.h  |  8 ++++++++
 include/uapi/drm/sis_drm.h     | 10 ++++++++++
 include/uapi/drm/tegra_drm.h   |  8 ++++++++
 include/uapi/drm/vc4_drm.h     |  8 ++++++++
 include/uapi/drm/via_drm.h     |  8 ++++++++
 include/uapi/drm/virtgpu_drm.h |  8 ++++++++
 include/uapi/drm/vmwgfx_drm.h  |  9 +++++++++
 24 files changed, 204 insertions(+), 2 deletions(-)

-- 
2.6.2

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^ permalink raw reply	[flat|nested] 40+ messages in thread

end of thread, other threads:[~2016-04-28 22:56 UTC | newest]

Thread overview: 40+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2016-04-21 20:17 [PATCH 00/24] drm: add extern C guard for the UAPI headers Emil Velikov
2016-04-21 20:17 ` [PATCH 01/24] drm/amdgpu: add extern C guard for the UAPI header Emil Velikov
2016-04-21 20:17 ` [PATCH 02/24] drm/armada: " Emil Velikov
2016-04-21 20:17 ` [PATCH 03/24] drm: add extern C guard for the UAPI headers Emil Velikov
2016-04-21 20:17 ` [PATCH 04/24] drm/etnaviv: add extern C guard for the UAPI header Emil Velikov
2016-04-27 15:13   ` Christian Gmeiner
2016-04-21 20:17 ` [PATCH 05/24] drm/exynos: " Emil Velikov
2016-04-21 20:17 ` [PATCH 06/24] drm/i810: " Emil Velikov
2016-04-22  8:36   ` Daniel Vetter
2016-04-21 20:17 ` [PATCH 07/24] drm/i915: " Emil Velikov
2016-04-21 20:17 ` [PATCH 08/24] drm/mga: " Emil Velikov
2016-04-21 20:17 ` [PATCH 09/24] drm/msm: " Emil Velikov
2016-04-21 20:17 ` [PATCH 10/24] drm/nouveau: " Emil Velikov
2016-04-21 20:17 ` [PATCH 11/24] drm/nouveau: drop drm/ prefix from include Emil Velikov
2016-04-21 20:17 ` [PATCH 12/24] drm/omap: add extern C guard for the UAPI header Emil Velikov
2016-04-28  8:18   ` Tomi Valkeinen
2016-04-21 20:17 ` [PATCH 13/24] drm/qxl: " Emil Velikov
2016-04-21 20:17 ` [PATCH 14/24] drm/qxl: remove XXX comment from " Emil Velikov
2016-04-21 20:17 ` [PATCH 15/24] drm/r128: add extern C guard for " Emil Velikov
2016-04-21 20:17 ` [PATCH 16/24] drm/radeon: " Emil Velikov
2016-04-21 20:17 ` [PATCH 17/24] drm/savage: " Emil Velikov
2016-04-21 20:17 ` [PATCH 18/24] drm/sis: " Emil Velikov
2016-04-21 20:17 ` [PATCH 19/24] drm/sis: add missing include drm.h " Emil Velikov
2016-04-22  8:37   ` Daniel Vetter
2016-04-26 23:37     ` Dave Airlie
2016-04-27 21:36       ` Emil Velikov
2016-04-21 20:17 ` [PATCH 20/24] drm/tegra: add extern C guard " Emil Velikov
2016-04-22 12:02   ` Thierry Reding
2016-04-21 20:17 ` [PATCH 21/24] drm/vc4: " Emil Velikov
2016-04-21 20:17 ` [PATCH 22/24] drm/via: " Emil Velikov
2016-04-21 20:17 ` [PATCH 23/24] drm/virgl: " Emil Velikov
2016-04-21 20:17 ` [PATCH 24/24] drm/vmwgfx: " Emil Velikov
2016-04-22  8:34 ` [PATCH 00/24] drm: add extern C guard for the UAPI headers Daniel Vetter
2016-04-27  9:47 ` Russell King - ARM Linux
2016-04-27 21:45   ` Emil Velikov
2016-04-27 21:57     ` Dave Airlie
2016-04-27 22:40       ` Emil Velikov
2016-04-28 13:19     ` Alex Deucher
2016-04-28 22:58       ` Ben Skeggs
2016-04-28 14:11     ` Russell King - ARM Linux

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