bug#41498: sed fails to build on kernels with selinux

[Chris Marusich <cmmarusich@gmail.com>]

[-- Attachment #1: Type: text/plain, Size: 2300 bytes --]

Hi,

I noticed that sed fails to build on my Fedora machine, but it builds
successfully on Guix System.  The error is:

--8<---------------cut here---------------start------------->8---
ERROR: testsuite/inplace-selinux
================================

inplace-selinux.sh: set-up failure: CONFIG_HEADER not defined
ERROR testsuite/inplace-selinux.sh (exit status: 99)
--8<---------------cut here---------------end--------------->8---

It appears related to this issue:

https://lists.gnu.org/archive/html/bug-sed/2019-06/msg00022.html

"This error comes from 'init.cfg' in the 'require_selinux_' function.
It happens when the system supports SELinux (based on
/proc/filesystems), but during the './configure' step, somehow the
generated Makefile did not contain a 'CONFIG_HEADER = config.h'
statement (very strange)."

Indeed, /proc/filesystems within the Guix sandbox on my Fedora system
looks like this:

--8<---------------cut here---------------start------------->8---
nodev	sysfs
nodev	tmpfs
nodev	bdev
nodev	proc
nodev	cgroup
nodev	cgroup2
nodev	cpuset
nodev	devtmpfs
nodev	configfs
nodev	debugfs
nodev	tracefs
nodev	securityfs
nodev	sockfs
nodev	bpf
nodev	pipefs
nodev	ramfs
nodev	hugetlbfs
nodev	devpts
	ext3
	ext2
	ext4
nodev	autofs
nodev	mqueue
nodev	selinuxfs
nodev	pstore
	fuseblk
nodev	fuse
nodev	fusectl
nodev	rpc_pipefs
	iso9660
--8<---------------cut here---------------end--------------->8---

However, on a vanilla Guix System (gnu/system/examples/vm-image.tmpl) it
looks like this:

--8<---------------cut here---------------start------------->8---
nodev	sysfs
nodev	tmpfs
nodev	bdev
nodev	proc
nodev	cgroup
nodev	cgroup2
nodev	cpuset
nodev	devtmpfs
nodev	debugfs
nodev	tracefs
nodev	securityfs
nodev	sockfs
nodev	bpf
nodev	pipefs
nodev	ramfs
nodev	hugetlbfs
nodev	devpts
	ext3
	ext2
	ext4
	vfat
nodev	ecryptfs
nodev	mqueue
nodev	pstore
nodev	9p
--8<---------------cut here---------------end--------------->8---

Note that "selinuxfs" is present in the Fedora case, but missing in the
Guix System case.  It seems very likely that this is causing the
failure.  We probably need to modify something in the sed build logic to
make it succeed even when "selinuxfs" is present.

-- 
Chris

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 832 bytes --]