preprocessorErrorDirective
ftp://ftp.de.debian.org/debian/pool/main/libd/libdazzle/libdazzle_3.44.0.orig.tar.xz
head libdazzle-3.44.0/src/backports/gtkeventcontrollermotion.c:36:3: error: #error "Cannot use this in conjunction with 3.24" [preprocessorErrorDirective]
ftp://ftp.de.debian.org/debian/pool/main/libd/libdex/libdex_1.0.0.orig.tar.xz
head libdex-1.0.0/src/dex-enums.h:25:3: error: #error "Only <libdex.h> can be included directly." [preprocessorErrorDirective]