Accepting request 681521 from home:Andreas_Schwab:Factory

- Don't enable gallium_loader on ppc and s390x
- Fix configuration on non-gallium archs
- u_dep_xcb.patch: fix missing xcb dependencies

OBS-URL: https://build.opensuse.org/request/show/681521
OBS-URL: https://build.opensuse.org/package/show/X11:XOrg/Mesa?expand=0&rev=815

u_dep_xcb.patch

@@ -0,0 +1,29 @@
+Index: mesa-18.3.4/meson.build
+===================================================================
+--- mesa-18.3.4.orig/meson.build
++++ mesa-18.3.4/meson.build
+@@ -1379,10 +1379,12 @@ if with_platform_x11
+     dep_x11_xcb = dependency('x11-xcb')
+   endif
+   if with_any_vk or with_egl or (with_glx == 'dri' and with_dri_platform == 'drm')
++    dep_x11_xcb = dependency('x11-xcb')
+     dep_xcb_dri2 = dependency('xcb-dri2', version : '>= 1.8')
+ 
+     if with_dri3
+       pre_args += '-DHAVE_DRI3'
++      dep_xcb = dependency('xcb')
+       dep_xcb_dri3 = dependency('xcb-dri3')
+       dep_xcb_present = dependency('xcb-present')
+       # until xcb-dri3 has been around long enough to make a hard-dependency:
+Index: mesa-18.3.4/src/loader/meson.build
+===================================================================
+--- mesa-18.3.4.orig/src/loader/meson.build
++++ mesa-18.3.4/src/loader/meson.build
+@@ -28,6 +28,7 @@ if with_platform_x11 and with_dri3
+     include_directories : [inc_include, inc_src, inc_drm_uapi],
+     dependencies : [
+       dep_libdrm, dep_xcb_dri3, dep_xcb_present, dep_xcb_sync, dep_xshmfence,
++      dep_xcb,
+     ],
+     build_by_default : false,
+   )