cd libffi-3.0.11

patch -Np1 -i ../libffi-3.0.11-includedir-1.patch

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