build fails on Raspberry Pi 3

[josefsachsconning]

My most recent successful build was at f965fd4. I tried make cleanall.

/home/sachs/src/julia-master/base/precompile.jl

signal (11): Segmentation fault
in expression starting at no file:0
_ZN12_GLOBAL__N_111GlobalMerge16doInitializationERN4llvm6ModuleE.part.258 at /home/sachs/src/julia-master/usr/bin/../lib/libLLVM-3.9.so (unknown line)
$d at /home/sachs/src/julia-master/usr/bin/../lib/libLLVM-3.9.so (unknown line)
Allocations: 197431104 (Pool: 197402878; Big: 28226); GC: 1214
Segmentation fault
*** This error is usually fixed by running `make clean`. If the error persists, try `make cleanall`. ***
Makefile:228: recipe for target '/home/sachs/src/julia-master/usr/lib/julia/sys.o' failed
make[1]: *** [/home/sachs/src/julia-master/usr/lib/julia/sys.o] Error 1
Makefile:101: recipe for target 'julia-sysimg-release' failed
make: *** [julia-sysimg-release] Error 2

[josefsachsconning]

Any comment on the cause of the problem, and prospects for remediation?

[ViralBShah]

IIUC, @vtjnash mentioned that it likely needs the llvm-NVPTX-addrspaces.patch, which is perhaps also needed on power.

[josefsachsconning]

Any update on this?

[josefsachsconning]

The latest at 029677a:

/home/sachs/src/julia-master/base/precompile.jl
Sysimage built. Summary:
Total ─────── 1546.089113 seconds
Base: ─────── 326.076686 seconds 21.0904%
Stdlibs: ──── 1019.574446 seconds 65.9454%
Precompile: ─ 200.425025 seconds 12.9634%

signal (11): Segmentation fault
in expression starting at no file:0
unknown function (ip: 0x76f22f1f)
_ZTVN4llvm12MCSectionELFE at /home/sachs/src/julia-master/usr/bin/../lib/libLLVM-3.9.so (unknown line)
Allocations: 217804953 (Pool: 217775600; Big: 29353); GC: 1300
Segmentation fault
*** This error is usually fixed by running `make clean`. If the error persists, try `make cleanall`. ***
Makefile:210: recipe for target '/home/sachs/src/julia-master/usr/lib/julia/sys-o.a' failed
make[1]: *** [/home/sachs/src/julia-master/usr/lib/julia/sys-o.a] Error 1
Makefile:85: recipe for target 'julia-sysimg-release' failed
make: *** [julia-sysimg-release] Error 2

[ViralBShah]

I believe the plan is to move to LLVM 6 soon.

[josefsachsconning]

Is it too soon to ask what "soon" means?

[Sacha0]

See #26398 and associated work. Best!

[vchuravy]

I am not sure that the upgrade to LLVM 6 will make this go away, but you might want to try
#26925 anyway.

make -C deps uninstall-llvm
make USE_BINARYBUILDER_LLVM=1 BINARYBUILDER_TRIPLET=aarch64-linux-gnu

to use the pre-built LLVM.

[josefsachsconning]

Thanks for the suggestion, @vchuravy , but that did not change the result for me.

[vchuravy]

Did you switch to the branch I referenced beforehand?
You should definitely get a slightly different error referencing libLLVM-6.0.so.

git fetch
git checkout vc/llvmbb
make -C deps uninstall-llvm
make USE_BINARYBUILDER_LLVM=1 BINARYBUILDER_TRIPLET=aarch64-linux-gnu