This is the mail archive of the
gcc-help@gcc.gnu.org
mailing list for the GCC project.
Re: Compiling gcc with sysroot
- From: Ian Lance Taylor <iant at google dot com>
- To: Christer Solskogen <christer dot solskogen at gmail dot com>
- Cc: gcc-help at gcc dot gnu dot org
- Date: Mon, 05 Dec 2011 12:49:19 -0800
- Subject: Re: Compiling gcc with sysroot
- References: <jbdjvm$ac3$1@dough.gmane.org>
Christer Solskogen <christer.solskogen@gmail.com> writes:
> I've been reading the documentation for it, but quite don't
> understand. When gcc is compiled (and installed) with
> --with-sysroot=DIR (and prefix is set to the same) will that effect
> how gcc it self is built or the how the newly installed gcc will
> behave afterwords? or both?
The primary effect of the --with-sysroot option is on how gcc works
after it has been built and installed. However, there is also an effect
on the build: if you use --with-sysroot, then when gcc is building
library code which runs on the target, it will use header files and
libraries from the specified sysroot.
See also --with-build-sysroot.
Note that you should normally only set --prefix and --with-sysroot to
the same directory when using a cross-compiler to build a native
compiler that runs on some other system. You should not normally use it
when building a cross-compiler.
Ian