OpenBSD

[MSaLeM18]

In OpenBSD installation of GC (BDWGC) must be installed as a prerequisite since it's not installed by default ...

OpenBSD, within V repo:

doas pkg_add boehm-gc-8.0.4p0 
CC=cc gmake

[j-bm]

You can omit the version, as pkg_add will fill that in automatically. (In future releases of OpenBSD and boehm-gc the version may change.)

[JalonSolov]

V includes boehm-gc in the thirdparty/libgc directory, and will compile it for your system. You only need to install it from the package manager if you can't/don't want to use the one V supplies.

[vetelko]

getting following error, how can I achieve V compiles libgc from thirdpart/libgc for me?
....
V has been successfully built
./v run ./cmd/tools/detect_tcc.v
V panic: >> error: none of the paths ['/usr/local/lib/libgc.a', '/usr/lib/libgc.a'] exist
....

[j-bm]

For OpenBSD you need the OpenBSD-supplied Boehm GC package. As root:

# pkg_add boehm-gc

The hint as to why this is required is in your V panic message: it looks for /usr/local/lib/something which is the usual path for add-on packages in OpenBSD.

[vetelko]

Thank you j-bm, I only reacted to @JalonSolov comment that v can compile its own version so adding boehm-gc package is not needed.

[j-bm]

Actually the OpenBSD package for boehm-gc has specific patches to make it work on that platform. (OpenBSD 7.2 has boehm-gc version 8.0.4 plus patches).

I haven't compared the two versions (the thirdparty/ version appears to be from a sqlite3 build system.)

For reference, the OpenBSD port of boehm-gc includes support for mmap, threads using pthreads, C++, static libraries and support for hardware-atomic ops in a separate library.

In my own experience, adding the boehm-gc package was required for using V on OpenBSD as somehow the thirdparty/ version was not used.