.. -*- coding: utf-8; -*-

.. include:: HEADER.rst

===========================

 Reducing binary code size

===========================

.. contents::

Common receipt

==============

Configure build with disabling unused features e.g.::

  $ ./configure --without-png

Link dynamically instead statically (on your platform shared library may be

already present).

Avoid debug build. Make release/final build instead debug.

Use packers. Packer compress binary so binary smaller. When program load

decompress itself, so startup time increase.

Binary packers::

  http://upx.sourceforge.net

    Home page.

GCC

======

Use ``-Os`` when produces ``*.o`` files.

Use ``-s`` when produces executable. And ``--remove-section=.comment`` and

``--remove-section=.note"``.

Use::

  $ strip --strip-all <executable>

and::

  $ gcc -ffunction-sections -fdata-sections -c -o my.o my.c

  $ gcc -Wl,--gc-sections -o my my.o

MSVC

====

Use ``/Os`` when produces ``*.obj`` files.