help getting started on Mac

[Jim Newton]

I’m trying to get started with Clasp.   I cloned a copy of the git repo.

I looked at the README.md file instructions.  First it says to try to download a precompiled release from
https://github.com/drmeister/clasp/releases
But when I look on that web page it says:
Please do not use the "source code" downloads below; clone the repository instead,


OK, so maybe the README.md is out of date?
So I though about trying to compile it myself.

The README.md file says to follow an extra step for Mac detailed on the page
https://github.com/drmeister/clasp/wiki/Building-Clasp-on-OS-X-requires-using-the-open-source-version-of-Clang
But I really don’t understand what that page is telling me to do.
Here’s what I read there.

Building Clasp on OS X requires using the same version of Clang that Clasp is linked with. I use the llvm/clang version that gets built by externals-clasp.

This clang needs to be informed where OS X compiler resources (header files) are located.

So the following symbolic link needs to be installed.

Let's say the external clang executable is installed at /Users/meister/Development/externals-clasp/build/release/bin/clang.


Questions:  Am I supposed to understand which version of Clang Clasp is linked with?  Especially before I’ve compiled
the first time?  What is “external clang”?   I see that on my system clang is in /usr/bin/clang.   Do I need to install another clang?

If someone could give me some more help, that’d be great.

Kind regards
Jim

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