Distinct from the KWindowSystem-API gating: these are the Xlib/XCB headers
themselves, which a Wayland-only sysroot does not ship, so each is a hard
compile failure rather than a lost feature:
appmenu/appmenu.h:13: fatal error: xcb/xcb.h: No such file or directory
Two of the affected directories are genuinely compiled and would have failed in
turn: kcms/kfontinst (gated only on FONTCONFIG_FOUND) and logout-greeter
(CMakeLists.txt:428, outside any X11 gate). kcms/cursortheme is already gated
upstream by `if(WITH_X11 AND X11_Xcursor_FOUND)` and ksmserver by if(WITH_X11);
guarding them too is harmless and keeps the rule uniform rather than
maintaining a list of exceptions.
Only touches includes at preprocessor depth 0 with respect to HAVE_X11, so
anything already guarded is left alone.
Verified: preprocessor balance OK across all 59 files carrying guards, and a
second run is a no-op (0 files, 0 includes) -- the recipe re-runs this on every
build, so idempotency is a correctness requirement, not a nicety.
vasilito
e3b1edacef