Cannot compile mooncake native-targeted libs

[zhuguiyuan]

Bug Report

Environment

OS

Operating System: Debian 12

MoonBit CLI Tools Version

moon 0.1.20250121 (a825806 2025-01-21) ~/.moon/bin/moon
moonc v0.1.20250121+7fc3467ab ~/.moon/bin/moonc
moonrun 0.1.20250121 (a825806 2025-01-21) ~/.moon/bin/moonrun

Steps to Reproduce

Same as the steps in this issue

moon new demo && cd demo && moon add moonbitlang/x && moon build --target native

Get:

Using cached moonbitlang/[email protected]
[================================--------] 8/10 done, 2/2 running
link-core: moonbitlang/x/fs
  cc1: fatal error: ./fs/internal/ffi/native_stub.c: No such file or directory
compilation terminated.
cc1: fatal error: ./fs/internal/ffi/native_stub.c: No such file or directory
compilation terminated.
cc1: fatal error: ./sys/internal/ffi/native_stub.c: No such file or directory
compilation terminated.
Finished. moon: ran 10 tasks, now up to date

Solving the problem by modifing .mooncakes/moonbitlang/x/fs/moon.pkg.json and .mooncakes/moonbitlang/x/sys/moon.pkg.json
(See #586)

- "cc-flags": "./fs/internal/ffi/native_stub.c"
+ "cc-flags": ".mooncakes/moonbitlang/x/fs/internal/ffi/native_stub.c"
- "cc-flags": "./sys/internal/ffi/native_stub.c"
+ "cc-flags": ".mooncakes/moonbitlang/x/sys/internal/ffi/native_stub.c"

Then compile again

moon build --target native

Get error:

/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/12/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/12/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Finished. moon: ran 2 tasks, now up to date

Expected Behavior

Linkage might only happens when compiling the main package.

Checklist

• (Optional) My case is minimal enough to be reproducible.