[pkg-boost-devel] Bug#750956: boost1.55 FTBFS on arm64

[Peter Michael Green]

package: boost1.55
version: 1.55.0+dfsg-1
severity: important
x-debbugs-cc: wookey at debian.org

boost1.55 failed to build on arm64 with an internal compiler error. In 
an attempt to fix this I disabled pch using the patch attatched in 
boost1.55.debdiff (note: this patch disables it unconditionally, if 
applying it in debian you would probablly want to make it architecture 
conditional).

Disabling pch made the package compile without internal compiler errors. 
Unfortunately it then failed with errors from dpkg-shlibdeps.

Unfortunately I don't have a log of the failed build itself (and I'm not 
rerunning the whole build, it took ages iwith qemu and I don't have 
access to real hardware at this point) but I do have a log from 
rerunning debian/rules binary after the failure (attatched as 
boost-binary.log) and it contained the following errors.

dpkg-shlibdeps: error: couldn't find library 
libboost_mpi_python.so.1.55.0 needed by 
debian/libboost-mpi-python1.55.0/usr/lib/python2.7/dist-packages/boost/mpi.aarch64-linux-gnu.so 
(ELF format: 'elf64-littleaarch64'; RPATH: '')
dpkg-shlibdeps: error: couldn't find library libboost_python.so.1.55.0 
needed by 
debian/libboost-mpi-python1.55.0/usr/lib/python2.7/dist-packages/boost/mpi.aarch64-linux-gnu.so 
(ELF format: 'elf64-littleaarch64'; RPATH: '')

Any thoughts on what the problem is? (I still have the build tree from 
the failed build if anyone wants me to dig anything out of it)

I'm on holiday right now so if wookey or someone else wants to take over 
this issue that would be great. Boost now seems to be one of the biggest 
blockers for getting debian arm64 into a sane state.

P.S. ubuntu split boost1.55 into two source packages (as part of their 
main/universe split iirc), over there the main boost1.55 source package 
built successfully on arm64 but the latest version of the 
boost-mpi-source1.55 source package failed with an internal compiler 
error. I'll go file a bug there when I get a bug number for this bug.

P.P.S. other versions of boost also FTBFS on debian arm64 but I have not 
investigated why
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