In case anyone encounters the same issue, the problem was solved by single threaded build using MAKEOPTS="-j1". No other config changes.
Why this works but not otherwise remains a mystery. I also had the same problem earlier today with dev-python/matplotlib-2.2.2-r1 except the linker was complaining about an incompatible version of libc. Again solved by -j1 and no other config modifications. I have sometimes experienced this with some packages but exceptionally rarely which is why it's not on usually on my "to try" list. If anyone has any insights as to why this might be happening (in general), I would be grateful and happy to expand my knowledge :) Cheers, Victor On 07/05/2020 15:53, Victor Ivanov wrote: > Ah, thanks for pointing this out! It appears I'm blind ... > > It's rather surprising though, as sci-libs/lapack was neither upgraded > nor rebuilt. Since sci-libs/scipy wasn't upgraded either it ought to > link just fine as it had previously been built against the same version > of sci-libs/lapack. I'm quite baffled. > > Rebuilding sci-libs/lapack didn't help and neither did ~amd64 keywording > it. The error remains the same, which would make sense as there's not > really a new version of sci-libs/lapack. > > Cheers, > Victor > > On 07/05/2020 15:04, Peter Humphrey wrote: >> On Thursday, 7 May 2020 14:31:41 BST Victor Ivanov wrote: >>> Hi all, >>> >>> For some reason SciPy fails to compile after today's Python 3.6 -> >>> Python 3.7 global update. It was the only package that failed out of all. >>> >>> Normally build.log (attached) is helpful enough to get me to resolve the >>> issue. However, it fails with a surprisingly unhelpful message during a >>> call to gfortran. Or maybe I'm unable to spot the proper error message. >> >> Isn't this the cause? >> >> x86_64-pc-linux-gnu-gcc: >> /var/tmp/portage/sci-libs/scipy-1.1.0/temp/tmpeyMzsQ/ >> source.c >> /usr/lib/gcc/x86_64-pc-linux-gnu/9.3.0/../../../../x86_64-pc-linux-gnu/bin/ld: >> >> /var/tmp/portage/sci-libs/scipy-1.1.0/temp/ccGtNhqg.o: in function `main': >> source.c:(.text.startup+0x8c): undefined reference to `cblas_ddot' >> collect2: error: ld returned 1 exit status >> >
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