$OpenBSD: patch-CMakeLists_txt,v 1.1 2021/04/27 18:54:08 solene Exp $
Disable allegro support.
Ours (4.2.3 at time of writing) is old and seemingly incompatible.
Index: CMakeLists.txt
--- CMakeLists.txt.orig
+++ CMakeLists.txt
@@ -121,7 +121,6 @@ find_package(PNG)
 
 if(NOT OPTION_DEDICATED)
     if(NOT WIN32)
-        find_package(Allegro)
         if(NOT APPLE)
             find_package(Freetype)
             find_package(SDL2)
@@ -253,7 +252,6 @@ if(NOT OPTION_DEDICATED)
     link_package(Fluidsynth)
     link_package(SDL)
     link_package(SDL2 TARGET SDL2::SDL2)
-    link_package(Allegro)
     link_package(FREETYPE TARGET Freetype::Freetype)
     link_package(Fontconfig TARGET Fontconfig::Fontconfig)
     link_package(ICU_lx)
