Compiled on X8DTU with 2 physical Intel Xeon E5530 CPU (8C16T)

Compile Flags:
CFLAGS="-mtune=generic -Os -pipe -flto -fuse-linker-plugin"
CXXFLAGS="-mtune=generic -Os -pipe -flto -fuse-linker-plugin -fno-exceptions -fno-rtti"
LDFLAGS="-Wl,-O1"
export CFLAGS CXXFLAGS LDFLAGS

Dependencies:
compiletc
libXft-dev
libjpeg-turbo-dev
xorg-server-dev

Commands:

tar xf fltk-1.3.5-source.tar.bz2

./configure \
--prefix=/usr/local \
--localstatedir=/var \
--libdir=/usr/local/lib/fltk-xft \
--enable-shared \
--disable-gl \
--disable-xinerama \
--disable-xfixes \
--disable-xcursor \
--disable-xrender

Configuration Summary
-------------------------------------------------------------------------
    Directories: prefix=/usr/local
                 bindir=${exec_prefix}/bin
                 datadir=${datarootdir}
                 datarootdir=${prefix}/share
                 exec_prefix=${prefix}
                 includedir=${prefix}/include
                 libdir=/usr/local/lib/fltk-xft
                 mandir=${datarootdir}/man
       Graphics: X11 + Xft + Xdbe
Image Libraries: JPEG=System
                 PNG=System
                 ZLIB=System
    Large Files: YES
         OpenGL: NO
        Threads: YES

# apply patch to removes printing support
patch src/Makefile fltk-no-printing.patch

# skip unwanted files and reduce compile time
patch Makefile fltk-skip-test-doc.patch

# do not compile fluid
sed -i '/DIRS/{s/ fluid//}' Makefile

# build
make -j