Re: Techniques to reduce executable size
On Mar 24, 5:25 pm, "Qu0ll" <Qu0llSixF...@gmail.com> wrote:
I come from a Java world where we have tools like ProGuard
which analyze all the components of an application and strip
out classes and members that are not being used. Is there an
equivalent in C++ or does this happen automatically? For
example, if I use one or two classes in the Boost library, do
I get the entire library when I link my program? Similarly if
I use just part of the STL, do I get the whole thing or just
those parts I use?
I'm not quite sure I understand what the Java tool does; Java
only loads classes on an as needed basis, so you never have
something you don't use. In statically compiled languages
(thus, C++), the linker only pulls in the object files it needs
from a library. Beyond that, it's a question of how the library
files were made---for widely used general purpose libraries,
each function should generally be in a separate object file; for
application specific classes, on the other hand, it's more usual
to use one object file for the entire class, which means that
you get all of the functions for the class as soon as you use
any one of them.
--
James Kanze (GABI Software) email:james.kanze@gmail.com
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