kwin/platformsupport at 9b1ea1c7f7318dabd2b8a67be43fc4d004a46392 - kwin

History

Vlad Zahorodnii 6b2e6cfd53 Prevent EGL headers from including Xlib headers One of the annoying things about EGL headers is that they include platform headers by default, e.g. on X11, it's Xlib.h, etc. The problem with Xlib.h is that it uses the define compiler directive to declare constants and those constants have very generic names, e.g. 'None', which typically conflict with enums, etc. In order to work around bad things coming from Xlib.h, we include fixx11.h file that contains some workarounds to redefine some Xlib's types. There's a flag or rather two flags (EGL_NO_PLATFORM_SPECIFIC_TYPES and EGL_NO_X11) that are cross-vendor and they can be used to prevent EGL headers from including platform specific headers, such as Xlib.h [1] The benefit of setting those two flags is that you can simply include EGL/egl.h or epoxy/egl.h and the world won't explode due to Xlib.h MESA_EGL_NO_X11_HEADERS is set to support older versions of Mesa. [1] https://github.com/KhronosGroup/EGL-Registry/pull/111	5 years ago
..
scenes	Prevent EGL headers from including Xlib headers	5 years ago
CMakeLists.txt	…

Vlad Zahorodnii 6b2e6cfd53 Prevent EGL headers from including Xlib headers

One of the annoying things about EGL headers is that they include
platform headers by default, e.g. on X11, it's Xlib.h, etc.

The problem with Xlib.h is that it uses the define compiler directive to
declare constants and those constants have very generic names, e.g.
'None', which typically conflict with enums, etc.

In order to work around bad things coming from Xlib.h, we include
fixx11.h file that contains some workarounds to redefine some Xlib's
types.

There's a flag or rather two flags (EGL_NO_PLATFORM_SPECIFIC_TYPES and
EGL_NO_X11) that are cross-vendor and they can be used to prevent EGL
headers from including platform specific headers, such as Xlib.h [1]

The benefit of setting those two flags is that you can simply include
EGL/egl.h or epoxy/egl.h and the world won't explode due to Xlib.h

MESA_EGL_NO_X11_HEADERS is set to support older versions of Mesa.

[1] https://github.com/KhronosGroup/EGL-Registry/pull/111

5 years ago

scenes

Prevent EGL headers from including Xlib headers

5 years ago

CMakeLists.txt

…