tce-load -i tiff-dev libpng-dev freeglut-dev giflib-dev

cd libwebp-0.3.1

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

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

make
sudo make install

WebP Configuration Summary
--------------------------

Shared libraries: yes
Static libraries: no
Threaded decode: yes
libwebp: yes
libwebpdecoder: no
libwebpdemux: no
libwebpmux: no

Tools:
cwebp : yes
  Input format support
  ====================
  JPEG : yes
  PNG  : yes
  TIFF : yes
  WIC  : no
dwebp : yes
  Output format support
  =====================
  PNG  : yes
  WIC  : no
gif2webp : no
webpmux  : no
vwebp    : no