Re: Reducing size of GCC installation?

[Jonathan Wakely <jwakely.gcc@gmail.com>]

On Tue, 4 Aug 2020 at 20:28, Thompson, Matt (GSFC-610.1)[SCIENCE
SYSTEMS AND APPLICATIONS INC] via Gcc-help <gcc-help@gcc.gnu.org>
wrote:
>
> All,
>
> This might be a FAQ, but my Google-fu is being stymied by the fact that my searches are often finding issues about making executables, etc. made by GCC smaller rather than my issue: making GCC itself smaller.
>
> To wit, I'm trying to build some Docker images and found that the code I'm eventually trying to build with gcc (gfortran, actually) doesn't like the versions from RPMs/DEBs/etc. So, my first step is usually to do what I'm quite used to and build GCC a la:
>
>   ../gcc-10.2.0/configure --prefix=$HOME/GCC/10.2.0 --disable-multilib --enable-languages=c,c++,fortran

If you're not going to need them you can disable a number of features:

--disable-nls
--disable-libstdcxx-pch
--disable-libcc1
--disable-libsanitizer
--disable-libssp
--disable-libgomp
--disable-libvtv
--disable-libstdcxx-filesystem-ts

I wouldn't recommend this one, despite shrinking the size of
libstdc++.so and libstdc++.a, because it is an ABI break:
--disable-libstdcxx-dual-abi

If this one still works it would also be an ABI break (and make C++
code compile slower):
--disable-extern-template