mipsen cross-toolchain bootstrap stalled, file conflicts

[Steve Langasek]

The build-dependencies of gcc-11-cross-mipsen are uninstallable in Ubuntu because of file conflicts:

Preparing to unpack .../libc6-mips32-mips64-cross_2.35-0ubuntu1cross1_all.deb ...
Unpacking libc6-mips32-mips64-cross (2.35-0ubuntu1cross1) ...
dpkg: error processing archive /var/cache/apt/archives/libc6-mips32-mips64-cross_2.35-0ubuntu1cross1_all.deb (--unpack):
 trying to overwrite '/usr/mips64-linux-gnuabi64/lib/ld.so.1', which is also in package libc6-mips64-cross 2.35-0ubuntu1cross1
Preparing to unpack .../libc6-mips32-mips64el-cross_2.35-0ubuntu1cross1_all.deb ...
Unpacking libc6-mips32-mips64el-cross (2.35-0ubuntu1cross1) ...
dpkg: error processing archive /var/cache/apt/archives/libc6-mips32-mips64el-cross_2.35-0ubuntu1cross1_all.deb (--unpack):
 trying to overwrite '/usr/mips64el-linux-gnuabi64/lib/ld.so.1', which is also in package libc6-mips64el-cross 2.35-0ubuntu1cross1
Preparing to unpack .../libc6-mips32-mips64r6-cross_2.35-0ubuntu1cross1_all.deb ...
Unpacking libc6-mips32-mips64r6-cross (2.35-0ubuntu1cross1) ...
dpkg: error processing archive /var/cache/apt/archives/libc6-mips32-mips64r6-cross_2.35-0ubuntu1cross1_all.deb (--unpack):
 trying to overwrite '/usr/mipsisa64r6-linux-gnuabi64/lib/ld-linux-mipsn8.so.1', which is also in package libc6-mips64r6-cross 2.35-0ubuntu1cross1
Preparing to unpack .../libc6-mips32-mips64r6el-cross_2.35-0ubuntu1cross1_all.deb ...
Unpacking libc6-mips32-mips64r6el-cross (2.35-0ubuntu1cross1) ...
dpkg: error processing archive /var/cache/apt/archives/libc6-mips32-mips64r6el-cross_2.35-0ubuntu1cross1_all.deb (--unpack):
 trying to overwrite '/usr/mipsisa64r6el-linux-gnuabi64/lib/ld-linux-mipsn8.so.1', which is also in package libc6-mips64r6el-cross 2.35-0ubuntu1cross1
Errors were encountered while processing:
 /var/cache/apt/archives/libc6-mips32-mips64-cross_2.35-0ubuntu1cross1_all.deb
 /var/cache/apt/archives/libc6-mips32-mips64el-cross_2.35-0ubuntu1cross1_all.deb
 /var/cache/apt/archives/libc6-mips32-mips64r6-cross_2.35-0ubuntu1cross1_all.deb
 /var/cache/apt/archives/libc6-mips32-mips64r6el-cross_2.35-0ubuntu1cross1_all.deb

These file conflicts do not exist in Debian, the packages are co-installable.

$ dpkg -S /usr/mips64-linux-gnuabi64/lib/ld.so.1
libc6-mips32-mips64-cross: /usr/mips64-linux-gnuabi64/lib/ld.so.1
$

$ dpkg -L libc6-mips64-cross|grep ld.so.1
/usr/mips64-linux-gnuabi64/lib64/ld.so.1
$

So there's a lib vs lib64 path difference between Debian and Ubuntu, I don't know why.

[Steve Langasek (vorlon)]

The problem is that libc6-mips64-cross contains /usr/mips64-linux-gnuabi64/lib/ld.so.1 in Ubuntu, but not in Debian. I suspect this is a result of changes in glibc upstream, present in Ubuntu (glibc 2.35) but not in Debian (glibc 2.33), regarding the canonical names of the various library files.

[Michael Hudson-Doyle (mwhudson)]

yeah so this is because the code that excludes /usr/mips64-linux-gnuabi64/lib/ld.so.1 from libc6-mips64-cross is in the code that handles symlinks and that file is now a regular file. Testing a fix but this is all done in perl...

[Michael Hudson-Doyle (mwhudson)]

Here is the build https://launchpad.net/~mwhudson/+archive/ubuntu/devirt/+build/24339504. If this finishes and looks OK before I start tomorrow, I'm happy for someone else to upload it :)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Matthias Klose (doko)]

all the -mipsen packages are now built for 24.04 LTS