Bug 64959 - Cannot build against EGL without X11
Summary: Cannot build against EGL without X11
Status: RESOLVED FIXED
Alias: None
Product: Mesa
Classification: Unclassified
Component: EGL (show other bugs)
Version: unspecified
Hardware: Other All
: medium normal
Assignee: Ross Burton
QA Contact:
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2013-05-24 16:16 UTC by Ross Burton
Modified: 2013-07-01 18:24 UTC (History)
3 users (show)

See Also:
i915 platform:
i915 features:


Attachments
Don't include X11 headers if no X11 platform (1.14 KB, patch)
2013-06-27 10:53 UTC, Ross Burton
Details | Splinter Review
Use pointers instead of ints (1.10 KB, patch)
2013-06-27 10:53 UTC, Ross Burton
Details | Splinter Review
Don't include X11 headers if no X11 platform (1.38 KB, patch)
2013-06-27 11:35 UTC, Ross Burton
Details | Splinter Review
Use right size types (1.07 KB, patch)
2013-06-27 11:36 UTC, Ross Burton
Details | Splinter Review

Description Ross Burton 2013-05-24 16:16:00 UTC
I'm building wayland 1.1 and weston 1.1 in an environment without any X headers against Mesa 9.0.2:

| In file included from /data/poky-master/tmp/sysroots/atom-pc/usr/include/EGL/egl.h:36:0,
|                  from /data/poky-master/tmp/work/core2-poky-linux/weston/1.1.0-r0/weston-1.1.0/src/gl-renderer.h:30,
|                  from /data/poky-master/tmp/work/core2-poky-linux/weston/1.1.0-r0/weston-1.1.0/src/gl-renderer.c:35:
| /data/poky-master/tmp/sysroots/atom-pc/usr/include/EGL/eglplatform.h:118:22: fatal error: X11/Xlib.h: No such file or directory

Currently I'm working around this by adding -DMESA_EGL_NO_X11_HEADERS to CFLAGS but that's clearly not the right thing to do.
Comment 1 Andrew Knight 2013-05-29 12:37:02 UTC
If you build gallium targets, you additionally need to comment out the xlib_sw_winsys include in src/gallium/auxilliary/pipe-loader/pipe_loader_sw.c as it is not guarded either.
Comment 2 Chad Versace 2013-06-05 16:51:44 UTC
Does adding -DWL_EGL_PLATFORM to CFLAGS fix the problem? That seems to be the right define to use when building in a pure Wayland system.

Don't use -DMESA_EGL_NO_X11_HEADERS, because that may break ABI on 32-bit systems. The definitions of the EGLNative types in that block are 32-bit instead of 64-bit.
Comment 3 Quentin "Sardem FF7" Glidic 2013-06-25 07:14:18 UTC
(In reply to comment #2)
> Does adding -DWL_EGL_PLATFORM to CFLAGS fix the problem? That seems to be
> the right define to use when building in a pure Wayland system.

On a pure Wayland system, that works fine.


> Don't use -DMESA_EGL_NO_X11_HEADERS, because that may break ABI on 32-bit
> systems. The definitions of the EGLNative types in that block are 32-bit
> instead of 64-bit.

What is the correct solution when you have both Wayland and X11 EGL then? Should we define -DWL_EGL_PLATFORM as soon as wayland EGL support is enabled? Depends on the ordering of --with-egl-platforms?

As soon as there is an identified solution, I will provide a patch to add the needed flags to the egl.pc file.
Comment 4 Ross Burton 2013-06-26 14:22:36 UTC
For fun, current mesa master doesn't even compile without X11 headers:

| In file included from /.../mesa/2_9.2.0~gitAUTOINC+9aebad618c-r9.0/git/include/EGL/egl.h:36:0,
|                  from /.../mesa/2_9.2.0~gitAUTOINC+9aebad618c-r9.0/git/src/egl/main/egltypedefs.h:36,
|                  from /.../mesa/2_9.2.0~gitAUTOINC+9aebad618c-r9.0/git/src/egl/main/eglconfig.h:37,
|                  from /.../mesa/2_9.2.0~gitAUTOINC+9aebad618c-r9.0/git/src/egl/main/eglcontext.c:34:
| /.../mesa/2_9.2.0~gitAUTOINC+9aebad618c-r9.0/git/include/EGL/eglplatform.h:118:22: fatal error: X11/Xlib.h: No such file or directory
Comment 5 Ross Burton 2013-06-27 10:53:12 UTC
Created attachment 81544 [details] [review]
Don't include X11 headers if no X11 platform
Comment 6 Ross Burton 2013-06-27 10:53:28 UTC
Created attachment 81545 [details] [review]
Use pointers instead of ints
Comment 7 Quentin "Sardem FF7" Glidic 2013-06-27 10:57:47 UTC
(In reply to comment #5)
> Created attachment 81544 [details] [review] [review]
> Don't include X11 headers if no X11 platform

We should definitely add such a flag in egl.pc file too. Otherwise, programs built against EGL will fail to build too.
Comment 8 Ross Burton 2013-06-27 11:35:45 UTC
Created attachment 81547 [details] [review]
Don't include X11 headers if no X11 platform
Comment 9 Ross Burton 2013-06-27 11:36:07 UTC
Created attachment 81548 [details] [review]
Use right size types
Comment 10 Chad Versace 2013-06-27 20:51:53 UTC
[Assigning to Ross].

Ross, both these patches look good to me and are
Reviewed-by: Chad Versace <chad.versace@linux.intel.com>

To ensure that the patches get backported to the stable branches 9.0 and 9.1 (because that's where the bug is really biting you), add the following tag above the signed-off line:
  Note: This patch is a candidate for the 9.0 and 9.1 branches.

Please mail them to mesa-dev so they can get reviewed and committed.


Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.