Bug#1125102: deal.ii: FTBFS on arm64: collect2: fatal error: ld terminated with signal 6 [Aborted]

Source: deal.ii
Version: 9.7.1-2
Severity: important
X-Debbugs-Cc: [email protected]
User: [email protected]
Usertags: arm64

deal.ii has a very bad track record for building on arm64 [1]

I couldn't find a previous bug where help was requested from the arm
porters, so here goes:

when linking with ld.mold (as in 9.7.1-3~exp1) I see:

collect2: fatal error: ld terminated with signal 6 [Aborted]

when linking with ld.bfd (as in 9.7.1-2) the build times out, but I
have also seen:

relocation truncated to fit: R_AARCH64_CALL26 against symbol
`dealii::ExceptionBase::ExceptionBase()' defined in .text section in
base/CMakeFiles/object_base_debug.dir/exceptions.cc.o

To me, at least the first failure seems very similar to bug #1112274
in Trilinos [2].

Also, the loong64 porters proposed a patch in #1120656 [3] to 'Fix
relocation R_LARCH_B26 overflow on loong64'.

Any help would be appreciated.

Thanks in advance
Graham


[1] https://buildd.debian.org/status/logs.php?pkg=deal.ii&arch=arm64
[2] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1112274
[3] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1120656