- Add logic so extra plugins can build without installing base components.

--- src/filter/CMakeLists.txt.orig	2026-06-08 12:51:55 UTC
+++ src/filter/CMakeLists.txt
@@ -15,6 +15,7 @@ endif (${Cairo_FOUND})
   add_subdirectory (mirr0r)
 endif (${Cairo_FOUND})
 
+if (NOT BUILD_EXTRA_PLUGINS)
 add_subdirectory (3dflippo)
 add_subdirectory (aech0r)
 add_subdirectory (alpha0ps)
@@ -106,3 +107,4 @@ add_subdirectory (water)
 add_subdirectory (vertigo)
 add_subdirectory (vignette)
 add_subdirectory (water)
+endif()
