Sysvipc message queues and fakeroot

[fpqc]

Build 16278

I figured I'd make an issue for this since there are no open issues mentioning it. I know the devs are aware.

The lack of Sysvipc message queues breaks fakeroot and therefore breaks Arch's makepkg unless fakeroot is recompiled to use tcp instead of sysvipc (and without a working makepkg, this means you either have to comment out the uid check in makepkg and compile fakeroot-tcp as root or alternatively compile fakeroot-tcp on a separate machine running Linux).

[therealkenc]

Same as #2013 which was closed (likely due to the choice of issue title), just to add the ref.

[fpqc]

yep! that was the motivation

[slaadvak]

I'd be really interested in having this issue resolved, as I ran into this problem while trying to build buildroot on Ubuntu for Windows (Windows Subsystem for Linux) 20170711 - Ubuntu 16.04 LTS:

fakeroot, while creating message channels: Function not implemented
This may be due to a lack of SYSV IPC support.
fakeroot: error while starting the `faked' daemon.
kill: usage: kill [-s sigspec | -n signum | -sigspec] pid | jobspec ... or kill -l [sigspec]
fs/ext2/ext2.mk:45: recipe for target '/home/slaadvak/buildroot/buildroot-2017.02.5/output/images/rootfs.ext2' failed
make[1]: *** [/home/slaadvak/buildroot/buildroot-2017.02.5/output/images/rootfs.ext2] Error 1
Makefile:79: recipe for target '_all' failed
make: *** [_all] Error 2

[therealkenc]

There is a straightforward work-around: don't fake it. dpkg-buildpackage -rsudo.

[dlech]

Related: #1443 (comment)

[yecril71pl]

-rsudo does not fly because that requires --add-depends=sudo, configuring transparent sudo in chroot because otherwise sudo does not work missing askpass. It is easier to say -r'fakeroot --faked faked-tcp', which is clumsy as can be but works with no additional preparations. Of course, this horrible syntax is Debian’s fault, not Microsoft’s.

[Zenexer]

The command from @yecril71pl is missing a hyphen. It should be -r'fakeroot --faked faked-tcp'. Just in case anyone else runs into the same issue.

[therealkenc]

Didn't realise Ben re-opened #1443 per dlech. This one was filed initially because it appeared all of the sysv mqueue issues were closed at the time. Affects fakeroot and anything else that uses them, natch.

[WayneD]

The easiest fix at the moment is to set the tcp alternative:
sudo update-alternatives --set fakeroot /usr/bin/fakeroot-tcp

That way "fakeroot" works fine without options. I'm using Ubuntu 16.04.3 LTS (Xenial Xerus).

[teras]

So, the original bug report was about arch linux and fakeroot, the solutions here are only for Ubuntu.
Any workaround for arch linux package creation?

[dudeofawesome]

@teras If you're still having this issue on Arch, you might try these steps:

1. Build fakeroot-tcp from here (latest .orig.tar.gz)
   1. ./bootstrap
   2. ./configure — prefix=/opt/fakeroot --libdir=/opt/fakeroot/libs --disable-static --with-ipc=tcp
   3. make
   4. sudo make install
2. Add /opt/fakeroot/bin/ to your path
3. Install yay
4. Install fakeroot-tcp from the AUR.

   yay -Syu fakeroot-tcp