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[bug-diffutils] bug#53256: bug#53256: Compiling 3.8 with nvhpc 22.1 : ma

From: Olivier Cessenat
Subject: [bug-diffutils] bug#53256: bug#53256: Compiling 3.8 with nvhpc 22.1 : malloca.c 64 bits operations with signed and unsigned operands are currently unsupported by __builtin_add_overflow
Date: Mon, 17 Jan 2022 18:08:13 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.14.0

Hello Paul,

Thanks again for your help. Thanks to your indications for bootstrap, I made a very basic patch to 3.8 which I'm submitting to spack


I could as you suggest compile with gcc, but now that it runs smoothly I prefer to stick to nvc for the whole chain.


Olivier Cessenat

Le 15/01/2022 à 22:03, Paul Eggert a écrit :
On 1/15/22 02:00, Olivier Cessenat wrote:
Could you make sure it works for 3.8 ?

Backporting would be some work and I've got other things on my plate.

Can you compile with gcc instead? That would be easiest.

If you can't use gcc for some reason (what is it?), then you can try building from git, like this:

git clone https://git.savannah.gnu.org/git/diffutils.git
cd diffutils
./configure CC=nvc
make WERROR_CFLAGS= check

Ignore all the bogus warnings that nvc generates.

For this latter approach you will need developer tools; see README-hacking and README-prereq.

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