Zig Binding doesn't work with static libopendal_c

[Xuanwo]

Zig binding's test will fail if libopendal_c is build in static:

https://github.com/apache/incubator-opendal/actions/runs/5287703769/jobs/9568516765?pr=2470

error: ld.lld: undefined symbol: _Unwind_SetIP
    note: referenced by gcc.rs:217 (library/std/src/personality/gcc.rs:217)
    note:               std-8389830094602f5a.std.fd8b77e9-cgu.0.rcgu.o:(rust_eh_personality) in archive /home/runner/work/incubator-opendal/incubator-opendal/target/debug/libopendal_c.a

[Xuanwo]

cc @tisonkun and @kassane, would you like to take a look?

[tisonkun]

build in static

Do you mean statically link glibc?

[kassane]

Static build of glibc on the Zig toolchain is problematic.
However it is possible to build musl-libc statically.

Note: the error is libunwind missing (eql to gcc_s) exception library (C++)
Try replacing in build.zig, .linkLibC() to .linkLibCpp() (libcxx+libuwind+libc+libcompiler-rt).

Using --verbose-link to see if the libraries linking.

Only, musl, libcxx and (custom)compiler-rt are static libraries.
https://github.com/ziglang/zig/tree/master/lib/libc
https://github.com/ziglang/zig/tree/master/lib/libunwind

[Xuanwo]

Do you mean statically link glibc?

change the crate-type of libopendal_c like this will break CI:

- crate-type = ["cdylib"]
+ crate-type = ["cdylib", "staticlib"]

[Xuanwo]

Try replacing in build.zig, .linkLibC() to .linkLibCpp() (libcxx+libuwind+libc+libcompiler-rt).

Thanks, I will give it a try!

[kassane]

Thanks, I will give it a try!

cargo build
    Finished dev [unoptimized + debuginfo] target(s) in 0.10s
make: Saindo do diretório '/home/kassane/Documentos/incubator-opendal/bindings/c'

Build Summary: 4/4 steps succeeded; 2/2 tests passed
test success
├─ run make success 142ms MaxRSS:54M
└─ run test 2 passed 1ms MaxRSS:10M
   └─ zig test Debug native success 1s MaxRSS:814M
[kassane@Catarino zig]$ ls ../../target/debug/
build  deps  examples  incremental  libopendal_c.a  libopendal_c.d

-- Edit

(Optional) My suggestion:
use https://github.com/rust-cross/cargo-zigbuild (rustc + zig linker)

[Xuanwo]

@kassane Thanks a lot!