GNU bug report logs - #42448
readdir misbehaves when running 32-bit user space on a 64-bit-kernel - kernel/userspace interface mismatch in getdents64

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From: Brett Gilio <brettg <at> gnu.org>
To: 42448 <at> debbugs.gnu.org
Subject: bug#42448: Issue with Qemu Binfmt and CMake not detecting compiler.
Date: Mon, 20 Jul 2020 14:44:15 -0500

Hey all,

Opening a bug report as per a request following this issue identified
at: https://lists.gnu.org/archive/html/guix-devel/2020-07/msg00124.html.

To recap, when running

--8<---------------cut here---------------start------------->8---
./pre-inst-env guix build --system=armhf-linux swi-prolog
--8<---------------cut here---------------end--------------->8---

the configure phase is failing to identify the C/CXX compiler
toolchains to compile a test CMake file. There is a variety of
CMakeError.log and other object outputs that populate the build
directory when ran with --keep-failed.

This seems to be reported before, but subsequently patched at
https://issues.guix.gnu.org/38454#3. This only occurs when using the
Qemu method of compiling on a foreign architecture, and is not present
when natively compiling on true hardware.

Thanks,
Brett Gilio

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