Crystal: Static compilation of empty project fails on macos (OSX)

[sherjilozair]

This is the command I ran and the error I got:

$ crystal build --static src/something.cr
ld: library not found for -lcrt0.o
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Error: execution of command failed with code: 1: `cc "${@}" -o '/Users/sherjil/Desktop/something/something'  -rdynamic -static  -lpcre -lgc -lpthread /usr/local/Cellar/crystal-lang/0.24.2_1/src/ext/libcrystal.a -levent -liconv -ldl -L/usr/lib -L/usr/local/lib`

I did a bit of googling, and it seems macos doesn't provide a static library for crt0.o, which is causing this problem.

[ysbaddaden]

Building static binaries is unsupported by macOS. There is nothing we can do :(

[j8r]

We can add the information that static linking is not supported when using --static on macOS. with a macro triggered by the darwin flag.

[ylluminate]

Smart suggestion from @j8r.