tce-load -i babl-dev pango-dev gdk-pixbuf2-dev libjpeg-turbo-dev libpng-dev librsvg-dev intltool libwebp-dev json-glib-dev libv4l2-dev libopenraw-dev ffmpeg-dev vala-dev

cd gegl-master (15/02/02)

https://git.gnome.org/browse/gegl/snapshot/gegl-master.tar.xz

CC="gcc -flto -fuse-linker-plugin -mtune=generic -Os -pipe" CXX="g++ -flto -fuse-linker-plugin -mtune=generic -Os -pipe" ./configure --prefix=/usr/local --disable-static --localstatedir=/var

find . -name Makefile -type f -exec sed -i 's/-O2//g' {} \;

make
sudo make install

Building GEGL with prefix=/usr/local

Optional features:
  GEGL docs:       yes
  Build workshop:  no
  Build website:   no  (asciidoc not found)
  SIMD:            sse:yes mmx:yes
  Vala support:    yes

Optional dependencies:
  asciidoc:        no  (asciidoc not found)
  enscript:        no  (enscript not found)
  Ruby:            no
  Lua:             no  (usable lua not found)
  Cairo:           yes
  Pango:           yes
  pangocairo:      yes
  GDKPixbuf:       yes
  JPEG:            yes
  PNG:             yes
  OpenEXR:         no  (OpenEXR library not found)
  rsvg:            yes
  SDL:             no  (SDL library not found)
  openraw:         yes
  Jasper:          no  (jasper library not found)
  graphviz:        no  (graphviz not found)
  avformat:        yes
  V4L:             no
  V4L2:            yes
  spiro:           no  (usable SPIRO library not found)
  EXIV:            yes
  umfpack:         no  (usable umfpack library not found)
  webp:            yes
  poly2tri-c:      yes (internal)