Hello,
Christophe Lyon <christophe.l...@linaro.org> writes: > I hoped improving this would be as simple as adding > --enable-maintainer-mode when configuring, after making sure > autoconf-2.69 and automake-1.15.1 were in the PATH (using our host's > libtool and gettext seems OK). > > However, doing so triggered several problems, which look like race > conditions in the build system (we build at -j160): > - random build errors in binutils / gdb with messages like "No rule to > make target 'po/BLD-POTFILES.in". I managed to reproduce something > similar manually once, I noticed an empty Makefile; the build logs are > of course difficult to read, so I couldn't figure out yet what could > cause this. > > - random build failures in gcc in fixincludes. I think this is a race > condition because fixincludes is updated concurrently both from > /fixincludes and $buillddir/fixincludes. Probably fixable in gcc > Makefiles. > > - I've seen other errors when building gcc like > configure.ac:25: error: possibly undefined macro: AM_ENABLE_MULTILIB > from libquadmath. I haven't investigated this yet. I don't know about the last one, but regarding the race conditions, one workaround might be to define a make target that regenerates all files (if one doesn't exist already, I don't know) and make the CI call it with -j1 to avoid concurrency, and then do the regular build step with -j160. -- Thiago
