Package: mono-runtime
Version: 6.8.0.105+dfsg-3.3
Severity: serious
Tags: ftbfs newcomer upstream
Justification: fails to build from source (but built successfully in the past)
X-Debbugs-Cc: l.scor...@gmail.com
Dear Maintainer,
* What led up to the situation?
I'm trying to install mono-runtime on debian bookworm from deb package on an
armel
NAS device (NSA325v2, architecture armv5tel, soft-float). The install fails due
to
the following error during package postinstall:
r4_conv_to_r8 R47 <- R44
* Assertion: should not be reached at decompose.c:1894
* What exactly did you do (or not do) that was effective (or
ineffective)?
According to my investigation, there's a long standing bug in mono that affects
the armel arch:
https://github.com/mono/mono/issues/12537
I have reproduced the issue via docker container on a x64 VM:
https://gitlab.winehq.org/mono/mono/-/issues/7
and I verified that the workaround suggested in the GitHub issue actually fixes
the
problem. The workaround is to disable the float32 optimization during the
package build:
cd mono-6.12.0.199
./configure --prefix=/opt/mono
MONO_ENV_OPTIONS='-O=-float32' make
make install
produces a working mono environment in /opt/mono.
* What was the outcome of this action?
This flag disables an optimization regarding floating point numbers that
is buggy on soft-float devices. Since debian is the one of the very few
distributions that
still supports this device, it would be beneficial to exclude this
known-non-working
optimization for the armel architecture.
* What outcome did you expect instead?
It would be nice if the actual upstream bug could be fixed, but that would
require
some heavyweight investigation which is better left to the upstream issue. I'd
be happy
to just be able to install mono from the debian package.
-- System Information:
Debian Release: 12.9
APT prefers stable
APT policy: (700, 'stable'), (500, 'stable-updates'), (500, 'stable-security')
Architecture: armel (armv5tel)
Kernel: Linux 5.15.5-kirkwood-tld-1 (UP; PREEMPT)
Locale: LANG=C, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages mono-runtime depends on:
ii libc6 2.36-9+deb12u9
pn mono-runtime-sgen <none>
Versions of packages mono-runtime recommends:
ii binfmt-support 2.2.2-2
mono-runtime suggests no packages.
