`capnp` fails when cross-compiling

hebasto commented at 2:33 pm on December 4, 2023: member

On the master branch @ 160d23677ad799cf9b493eaa923b2ac080c3fb8e, the native/bin/capnp fails when cross-compiling with MULTIPROCESS=1:

0  GEN      /home/hebasto/git/bitcoin/depends/x86_64-pc-linux-gnu/include/mp/proxy.capnp.h
1/home/hebasto/git/bitcoin/depends/x86_64-pc-linux-gnu/include/mp/proxy.capnp: File is not in the current directory and does not match any prefix defined with --src-prefix. Please pass an appropriate --src-prefix so I can figure out where to write the output for this file.
2/home/hebasto/git/bitcoin/depends/x86_64-apple-darwin/native/bin/capnp compile: /home/hebasto/git/bitcoin/depends/x86_64-pc-linux-gnu/include/mp/proxy.capnp: no such file
3Try '/home/hebasto/git/bitcoin/depends/x86_64-apple-darwin/native/bin/capnp compile --help' for more information.
4terminate called after throwing an instance of 'std::runtime_error'
5  what():  Invoking /home/hebasto/git/bitcoin/depends/x86_64-apple-darwin/native/bin/capnp failed
6make[2]: *** [/home/hebasto/git/bitcoin/depends/x86_64-apple-darwin/native/include/mpgen.mk:4: /home/hebasto/git/bitcoin/depends/x86_64-pc-linux-gnu/include/mp/proxy.capnp.h] Aborted (core dumped)

Please note, that it looks for x86_64-pc-linux-gnu subdirectory, while HOST=x86_64-apple-darwin.

UPDATE: The bug happens on Ubuntu 23.10, but not on Ubuntu 22.04.

hebasto commented at 2:33 pm on December 4, 2023: member

cc @ryanofsky

maflcko added the label Build system on Dec 4, 2023

maflcko added the label Bug on Dec 4, 2023

ryanofsky commented at 6:00 pm on December 4, 2023: contributor

I’m struggling to get darwin build working locally, but I will try docker to reproduce this. Do you know if this might be a recent regression, or when was the last time it might have worked?

hebasto commented at 7:58 pm on December 4, 2023: member

Another detail. The bug happens on Ubuntu 23.10, but not on Ubuntu 22.04.

ryanofsky commented at 8:02 pm on December 4, 2023: contributor

I’m still working on this and not having any luck reproducing it. Can you give more complete steps to reproduce? I’m using the CI docker container and running:

0cd /ci_container_base
1make -C depends HOST=x86_64-apple-darwin MULTIPROCESS=1 NO_QT=1 V=1
2mkdir build
3cd build
4CONFIG_SITE=$PWD/../depends/x86_64-apple-darwin/share/config.site ../configure
5make

ffb021612b8f581cbbaffacc80922d1bc5683706 is checked out. It looks like you’re doing something different, but I’m not sure what exactly. Alternately if you could run make with V=1 that would be helpful to see command line mpgen is invoked with

hebasto commented at 10:08 pm on December 4, 2023: member

I fail to reproduce the bug in clean docker environment. Perhaps, my machine has a broken environment.

Closing.

hebasto closed this on Dec 4, 2023

ryanofsky commented at 10:10 pm on December 4, 2023: contributor

That makes more sense. Thanks for the bug report in any case!

hebasto commented at 1:23 pm on December 5, 2023: member

That makes more sense. Thanks for the bug report in any case!

I was careless and didn’t run make distclean.

capnp fails when cross-compiling #28993

`capnp` fails when cross-compiling #28993