tce-load -i compiletc libXext-dev libpng-dev libXcursor-dev libjpeg-turbo-dev libpng-dev

wget https://github.com/fltk/fltk/releases/download/release-1.3.11/fltk-1.3.11-source.tar.bz2

cd fltk-1.3.11

patch -Np1 -i ../fltk-no-printing.patch
patch -Np1 -i ../fltk-ansi-patch-1.3.x.patch

cp ../AnsiMode.H src/

CC="gcc -flto -mtune=generic -Os -pipe -Wl,-T/usr/local/lib/ldscripts/elf_x86_64.xbn" CXX="g++ -flto -mtune=generic -Os -pipe -fno-exceptions -fno-rtti -Wl,-T/usr/local/lib/ldscripts/elf_x86_64.xbn" ./configure --prefix=/usr/local --enable-shared --localstatedir=/var --disable-gl --disable-xinerama --disable-xft --disable-xfixes --disable-xrender

make [0m 53.93s]
sudo make install

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

869,116   libfltk.so.1.3
17,540    libfltk_forms.so.1.3
44,012    libfltk_images.so.1.3

lto
---
1,117,160 libfltk.so.1.4
22,008    libfltk_forms.so.1.4
158,496   libfltk_images.so.1.4

25,604    fltk-options
648,760   fluid

ldscripts + lto
---------------
1,110,224 libfltk.so.1.4
17,704    libfltk_forms.so.1.4
150,220   libfltk_images.so.1.4

17,604    fltk-options
645,784   fluid

ldscripts
---------
1,141,824 libfltk.so.1.4
17,892    libfltk_forms.so.1.4
151,608   libfltk_images.so.1.4

18,212    fltk-options
674,972   fluid

ldscripts + lto +xcursor
------------------------
1,110,128 libfltk.so.1.4
17,728    libfltk_forms.so.1.4
15,0220   libfltk_images.so.1.4