meson: always define {,DRAW_}LLVM_AVAILABLE one way or the other
With the usual benefits of #if
instead of #ifdef
; mostly the fact that typos are now build failures instead of silently being interpreted as if 0.
Edited by Eric Engestrom
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With the usual benefits of #if
instead of #ifdef
; mostly the fact that typos are now build failures instead of silently being interpreted as if 0.