Hi Brett,
On 02/09/15 14:56, Bode, Brett wrote:
How do you handle the binutils dependency for other software (like mpich)? I
have been using the GCC-4.9.2-binutils-2.25 version on a haswell node. Binutils
is required to build GCC, but it is also required to build other software with
GCC. However, those packages do not list binutils (either version) as a
dependency. My hack to get around the problem was change the plain binutils
module in a regular “dependency” rather than a builddependency. Probably not
the best solution but to be honest I think the GCC-4.9.x-binutils-2.25 sort of
implies that it is included.
Up until now, we relied on the OS-provided binutils.
With the GNU toolchain and the 2015b 'common' toolchains that are
constructed on top of GNU, we're now pulling binutils into the mix as
well, which proved necessary on RHEL6/Haswell systems (since the older
binutils there didn't support AVX2 yet, at least for a while).
If you use GNU as a toolchain rather than GCC, you'll have an
EB-provided binutils in your build environment via the toolchain, and
there's no need to include binutils as a (non-build) dependency.
The reason we're doing it like this is to use a binutils that was built
with the GCC we build ourselves (as opposed to one that was built with
the OS compiler).
The name GCC-4.9.x-binutils-2.25 just means that this GCC build was done
using that specific version of binutils (yet one that was built with the
OS compiler, which is not what we want to end up using).
Does that make sense?
regards,
Kenneth
Brett
On Sep 2, 2015, at 7:42 AM, Ward Poelmans <[email protected]> wrote:
On Wed, Sep 2, 2015 at 2:39 PM, Backeljauw Franky
<[email protected]> wrote:
I’m wondering: why do I have both binutils/2.25 and
binutils/2.25-GCC-4.9.3-binutils-2.25 (the same for Bison, flex, M4, zlib)?
Are the non-GCC-versions actually used, or are they just dependencies needed to
built the GCC-versions?
binutils/2.25 is build with the system compiler and used to bootstrap
GCC. After that we build binutils/2.25-GCC-4.9.3-binutils-2.25 and use
it. Bison & co are deps needed to build binutils.
In principle, you can delete binutils/2.25 (and deps).
Ward
