--- CMakeLists.txt.orig	2020-12-09 06:02:41 UTC
+++ CMakeLists.txt
@@ -11,8 +11,6 @@ if (NOT WITHOUT_OPENCV)
   find_package (OpenCV)
 endif ()
 
-find_package (Cairo)
-
 include(FindPkgConfig)
 option (WITHOUT_GAVL "Disable plugins dependent upon gavl" OFF)
 if (PKG_CONFIG_FOUND AND NOT WITHOUT_GAVL)
@@ -38,16 +36,8 @@ set (FREI0R_1_1_DEF "${CMAKE_SOURCE_DIR}/msvc/frei0r_1
 # --- custom targets: ---
 INCLUDE( cmake/modules/TargetDistclean.cmake OPTIONAL)
 
-# See this thread for a ridiculous discussion about the simple question how to install a header file with CMake: http://www.cmake.org/pipermail/cmake/2009-October/032874.html
-install (DIRECTORY include DESTINATION . FILES_MATCHING PATTERN "frei0r.h" PATTERN "msvc" EXCLUDE)
+add_subdirectory (src/filter)
 
-add_subdirectory (doc)
-add_subdirectory (src)
-
-# Generate frei0r.pc and install it.
 set (prefix "${CMAKE_INSTALL_PREFIX}")
 set (exec_prefix "${CMAKE_INSTALL_PREFIX}")
 set (libdir "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}")
-set (includedir "${CMAKE_INSTALL_PREFIX}/include")
-configure_file ("frei0r.pc.in" "frei0r.pc" @ONLY)
-install (FILES "${CMAKE_CURRENT_BINARY_DIR}/frei0r.pc" DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
--- src/filter/CMakeLists.txt.orig	2020-12-09 06:02:41 UTC
+++ src/filter/CMakeLists.txt
@@ -8,93 +8,3 @@ if (${OpenCV_FOUND})
     add_subdirectory (facebl0r)
     add_subdirectory (facedetect)
 endif (${OpenCV_FOUND})
-
-if (${Cairo_FOUND})
-  add_subdirectory (cairoimagegrid)
-  add_subdirectory (cairogradient)
-endif (${Cairo_FOUND})
-
-add_subdirectory (3dflippo)
-add_subdirectory (aech0r)
-add_subdirectory (alpha0ps)
-add_subdirectory (balanc0r)
-add_subdirectory (baltan)
-add_subdirectory (bluescreen0r)
-add_subdirectory (bgsubtract0r)
-add_subdirectory (blur)
-add_subdirectory (brightness)
-add_subdirectory (bw0r)
-add_subdirectory (cartoon)
-add_subdirectory (cluster)
-add_subdirectory (colgate)
-add_subdirectory (coloradj)
-add_subdirectory (colordistance)
-add_subdirectory (colorize)
-add_subdirectory (colorhalftone)
-add_subdirectory (colortap)
-add_subdirectory (contrast0r)
-add_subdirectory (c0rners)
-add_subdirectory (curves)
-add_subdirectory (d90stairsteppingfix)
-add_subdirectory (defish0r)
-add_subdirectory (delay0r)
-add_subdirectory (delaygrab)
-add_subdirectory (denoise)
-add_subdirectory (distort0r)
-add_subdirectory (dither)
-add_subdirectory (edgeglow)
-add_subdirectory (elastic_scale)
-add_subdirectory (emboss)
-add_subdirectory (equaliz0r)
-add_subdirectory (flippo)
-add_subdirectory (gamma)
-add_subdirectory (glow)
-add_subdirectory (glitch0r)
-#add_subdirectory (host_param_test)
-add_subdirectory (hueshift0r)
-add_subdirectory (invert0r)
-add_subdirectory (keyspillm0pup)
-add_subdirectory (lenscorrection)
-add_subdirectory (letterb0xed)
-add_subdirectory (levels)
-add_subdirectory (lightgraffiti)
-add_subdirectory (luminance)
-add_subdirectory (mask0mate)
-add_subdirectory (medians)
-if (NOT ${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
-  # clang 3.1 on OSX fails to compile this one
-  add_subdirectory (measure)
-endif ()
-add_subdirectory (ndvi)
-add_subdirectory (nervous)
-add_subdirectory (normaliz0r)
-add_subdirectory (nosync0r)
-add_subdirectory (perspective)
-add_subdirectory (pixeliz0r)
-add_subdirectory (posterize)
-add_subdirectory (premultiply)
-add_subdirectory (primaries)
-add_subdirectory (RGB)
-add_subdirectory (rgbnoise)
-add_subdirectory (rgbsplit0r)
-add_subdirectory (saturat0r)
-add_subdirectory (scanline0r)
-add_subdirectory (select0r)
-add_subdirectory (sharpness)
-add_subdirectory (sigmoidaltransfer)
-add_subdirectory (sobel)
-add_subdirectory (softglow)
-add_subdirectory (sopsat)
-add_subdirectory (spillsupress)
-add_subdirectory (squareblur)
-add_subdirectory (tehroxx0r)
-add_subdirectory (three_point_balance)
-add_subdirectory (threelay0r)
-add_subdirectory (threshold0r)
-add_subdirectory (timeout)
-add_subdirectory (tint0r)
-add_subdirectory (transparency)
-add_subdirectory (tutorial)
-add_subdirectory (twolay0r)
-add_subdirectory (vertigo)
-add_subdirectory (vignette)