[new port] devel/libc-bitcode: FreeBSD libc library compiled to a single LLVM IR bitcode file

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Summary

Intended to be used with security/klee.

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Suggestions by Mikael Urankar.

[lwhsu]

This generally looks good to me. I'm curious about that should we use the libcxx from llvm project directly or from src/contrib/llvm-project.

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• Build libc++ from FreeBSD sources too. The ports doesn't build yet due to some bug in gllvm.

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devel/libc-bitcode/Makefile

54

Do we need ONLY_FOR_ARCHS?

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devel/libc-bitcode/Makefile

41

I am not sure but if DISTFILES are empty, then fetch does nothing by default.

[bapt]

In general DO_NADA is leftovers in the infrastructure, and most/all of their usage has been removed, if you need to define a target with DO_NADA, then there is a bug somewhere we do need to fix

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• Remove DO_NADA. Use ${ARCH} variable.
• Set correct LICENSE_FILE depending on FreeBSD version.

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devel/libc-bitcode/Makefile

51

Should we merge do-build with post-build?

devel/libc-bitcode/pkg-descr

2

devel/libcxx-bitcode/Makefile

36

45

We should probably check if we are on FreeBSD here. See https://www.freebsd.org/doc/en/books/porters-handbook/book.html#slow-patch

devel/libcxx-bitcode/pkg-descr

6

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• Address comments.
• Use shared libc as bitcode extraction source.

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devel/libc-bitcode/Makefile

51

I actually like it separated, but if you insist, I will merge them.

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devel/libc-bitcode/Makefile

51

I won't insist, but it might make it easier to grasp for future readers :)