OSX build instructions currently fail
jasper-lyons opened this issue · comments
CMake can't find a compiler and this causes the build to error out.
I had a successful play with simply using cmake over here. The examples I tested all work. Let me know if you'd accept a PR with the documentation changes I added.
And why can't CMake find a compiler if you have clang installed? Something different about your setup?
The existing instructions work on CI and also tested them manually on an M1.
Because the CXX environment variable wasn't set. I'm unaware of your setup so can't tell you what might be different.
I think they work in CI as the CI scripts export a CXX env variable.
Also, I found that the -G Xcode option also caused cmake to bail (with the same error, no compiler found, even with a CXX variable set). By removing it I was able to get cmake to run and then compile lobster.
We want to build with Xcode though. It's the default toolchain on MacOS, and people might want to, you know, debug or use the IDE. I bet Xcode does not need that variable because it itself installs the toolchain.
I believer after installing Xcode, there is a separate step where it asks you to install the toolchain, did you go thru that? Is the Clang you have from Xcode, or installed in a different way?
Ah, reinstalling Xcode seems to fix the original build script. I'm not sure why though :(.