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From: zimoun <zimon.toutoune@gmail.com>
To: Andy Tai <atai@atai.org>, help-guix@gnu.org
Subject: Re: building package: gcc 7.5.0 referenced instead of latest gcc; not sure why
Date: Tue, 23 Feb 2021 23:06:26 +0100	[thread overview]
Message-ID: <86sg5mtp5p.fsf@gmail.com> (raw)
In-Reply-To: <CAJsg1E_mb2w-neci18fzdq3+RkYEE8XYV3itZb8kzGnR27hfMA@mail.gmail.com>

Hi Andy,

On Mon, 22 Feb 2021 at 16:10, Andy Tai <atai@atai.org> wrote:

> ./pre-inst-env gcc --version
> gcc (GCC) 10.2.0
> Copyright (C) 2020 Free Software Foundation, Inc.

Well, this GCC 10.2 is not used by the build-system…

> I tried to update a package definition (vtk) and then tried to build it
>
> ./pre-inst-env guix build -k -K vtk

…which instead uses 7.5.


> I am not sure why gcc 7.5 is being used;   no where in the package
> definition scm file references explicitly gcc 7.5.  I did not install
> gcc 7.5 explicitly either.

For example,

--8<---------------cut here---------------start------------->8---
$ guix environment vtk -C
[env]$ gcc --version
gcc (GCC) 7.5.0
Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
--8<---------------cut here---------------end--------------->8---

Quickly said, the GCC comes from the cmake-build-system.

> (gcc 7.5 has problem compiling the package source so I want to make
> sure later gcc used)

It depends on what you want at the end: a variant for personal use or
for submitting.

For personal use, you can try:

  guix build -L /path/to/variant vtk --with-c-toolchain=gcc-toolchain@10

well, use package transformations, at CLI level or package level [1].

For submitting, I do not know what is the best.


Hope that helps,
simon

1: https://guix.gnu.org/manual/devel/en/guix.html#Defining-Package-Variants


  parent reply	other threads:[~2021-02-23 22:08 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-23  0:10 building package: gcc 7.5.0 referenced instead of latest gcc; not sure why Andy Tai
2021-02-23  2:48 ` Leo Famulari
2021-02-23 22:06 ` zimoun [this message]
2021-02-24  4:21   ` Andy Tai
  -- strict thread matches above, loose matches on Subject: below --
2021-02-23  0:18 Andy Tai
2021-02-22 22:25 Andy Tai
2021-02-24 10:24 ` Chris Marusich

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