build.sh missing musl static libraries (crt1.o, libc.a, libunwind.a)

[codegod100]

When building for musl targets on Linux, build.sh only copies libhost.a to the target directory. However, platform/main.roc declares that musl targets also require crt1.o, libc.a, and libunwind.a:

x64musl: ["crt1.o", "libhost.a", "libunwind.a", app, "libc.a"],
arm64musl: ["crt1.o", "libhost.a", "libunwind.a", app, "libc.a"],

This causes linker failures when trying to build Roc applications:

ld.lld: error: cannot open examples/../platform/targets/x64musl/crt1.o: No such file or directory
ld.lld: error: cannot open examples/../platform/targets/x64musl/libunwind.a: No such file or directory
ld.lld: error: cannot open examples/../platform/targets/x64musl/libc.a: No such file or directory

Fix:

The Rust toolchain already includes these files in its self-contained musl support directory at:

~/.rustup/toolchains/<toolchain>/lib/rustlib/<target>/lib/self-contained/

build.sh should copy these files for musl targets after building libhost.a.

[lukewilliamboswell]

Just pushed a commit with these files included, can you confirm this is resolved please. 😃

[codegod100]

LGTM 👍