gap-4.10 causes error building sage

[Aaron Lauve]

It's been awhile since I built sage from source. (I think I was running 8.5?)

In the meantime, I migrated files from one laptop to another, and upgraded operating systems, so not sure where the problem lies.

Running macOS 10.15.3 on a 2019 Airbook.

I tried the following:

git branch master

git pull

make distclean && make

************************************************************************

Error installing package gap-4.10.2.p1

************************************************************************

Please email sage-devel (http://groups.google.com/group/sage-devel)

Fwiw, I first tried installing gcc with homebrew before getting started with the sage build.

When I first got the error, I uninstalled hoping that would fix things, but still no good.

Thanks for any help you can offer!

Aaron

[Matthias Koeppe]

From the log:

duplicate symbol '_compress' in:
    obj/src/.libs/dteval.o
    /usr/local/lib/libz.a(compress.o)
ld: 1 duplicate symbol for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

I'd suggest to check where this version of /usr/local/lib/libz.a comes from. 

Homebrew normally installs zlib keg-only, i.e., in /usr/local/opt/zlib/, not there.

Try removing it and/or reinstalling homebrew's zlib.

[Aaron Lauve]

That was it!

This seems to be related to a mysql install. I'll report back on any concomitant problems/solutions with that.