zigwasm/wasmtime-zig

Zig embedding of Wasmtime

wasmtime-zig's Issues

Make this repo build again

Hey,

first of all: thank you for the great work! Really happy to see a few people taking care of Zigs Wasm capabilities!

Unfortunately, this repo aged a bit, I wasn't able to make it work with zig-0.8.0 as wasm-zig is a little more ahead... Therefore I started to update this repo to make it runnable with zig-master and consequently with a recent version of the wasmtime API.

I anticipated a three-step process:

1. update zig & gyro dependency, fix existing code (this issue; PR)
2. update wasmtime API, adjust code to use a recent version (#15)
3. translate additional examples wasmtime examples repo (no issue yet)

I'm currently in phase 1 and working on a PR. While gyro build & gyro build test already work, I'm now about to fix the examples: simple and gcd already work on macos, Linux and Windows examples fail to build entirely.

On Linux I get weird linking errors, which is the main reason I'm reaching out here. As macos build basically works, I see no reason why it shouldn't on Linux. However, I have no experience investigating such errors - my gut feeling tells me I either need an additional compile flag, there is an issue in wasm-zig or even an issue in the nightly of the zig version used.

Here an example of the linking errors:

gyro build run -Dexample=simple --search-prefix "$(pwd)/$WASMTIME"

Click to expand!

$ gyro build run -Dexample=simple --search-prefix "$(pwd)/$WASMTIME"
LLD Link... ld.lld: error: undefined symbol: _Unwind_Resume
>>> referenced by wasmtime.2gagyan6-cgu.13
>>>               wasmtime.wasmtime.2gagyan6-cgu.13.rcgu.o:(_$LT$smallvec..SmallVec$LT$A$GT$$u20$as$u20$core..ops..drop..Drop$GT$::drop::h0c82f3937d4ad6ba) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a
>>> referenced by wasmtime.2gagyan6-cgu.13
>>>               wasmtime.wasmtime.2gagyan6-cgu.13.rcgu.o:(_$LT$smallvec..SmallVec$LT$A$GT$$u20$as$u20$core..ops..drop..Drop$GT$::drop::hefb0aab2e138c30b) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a
>>> referenced by wasmtime.2gagyan6-cgu.13
>>>               wasmtime.wasmtime.2gagyan6-cgu.13.rcgu.o:(smallvec::SmallVec$LT$A$GT$::from_elem::hbdeff6b68cc78aa3) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a
>>> referenced 2136 more times

ld.lld: error: undefined symbol: _Unwind_Backtrace
>>> referenced by libunwind.rs:90 (/rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90)
>>>               std-6f77337c1826707d.std.4qsyoc55-cgu.0.rcgu.o:(_$LT$std..sys_common..backtrace.._print..DisplayBacktrace$u20$as$u20$core..fmt..Display$GT$::fmt::hf092b5883b4b2e50) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a
>>> referenced by wasmtime_runtime.594lqgj0-cgu.12
>>>               wasmtime_runtime-5268fe14b5b9cb0e.wasmtime_runtime.594lqgj0-cgu.12.rcgu.o:(backtrace::backtrace::trace::h6cb5f3002488cf98) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a
>>> referenced by backtrace.5jl3q0p6-cgu.9
>>>               backtrace-b1b27a0e5161b8ca.backtrace.5jl3q0p6-cgu.9.rcgu.o:(backtrace::backtrace::trace::hca0d710b8f9deb48) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a

ld.lld: error: undefined symbol: _Unwind_GetIP
>>> referenced by libunwind.rs:43 (/rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:43)
>>>               std-6f77337c1826707d.std.4qsyoc55-cgu.0.rcgu.o:(std::sys_common::backtrace::_print_fmt::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::h76dfbe2a87a43772) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a
>>> referenced by libunwind.rs:43 (/rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:43)
>>>               std-6f77337c1826707d.std.4qsyoc55-cgu.0.rcgu.o:(std::sys_common::backtrace::_print_fmt::_$u7b$$u7b$closure$u7d$$u7d$::hab3cbf6657151fae) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a
>>> referenced by libunwind.rs:43 (/rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:43)
>>>               std-6f77337c1826707d.std.4qsyoc55-cgu.0.rcgu.o:(std::backtrace_rs::symbolize::gimli::resolve::hd3226e61f21019de) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a
>>> referenced 10 more times

ld.lld: error: undefined symbol: _Unwind_GetDataRelBase
>>> referenced by gcc.rs:309 (/rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/panic_unwind/src/gcc.rs:309)
>>>               panic_unwind-e238540f8faf9927.panic_unwind.3kbstr8o-cgu.0.rcgu.o:(core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h43c444d62f54d802) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a
>>> referenced by gcc.rs:309 (/rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/panic_unwind/src/gcc.rs:309)
>>>               panic_unwind-e238540f8faf9927.panic_unwind.3kbstr8o-cgu.0.rcgu.o:(panic_unwind::real_imp::find_eh_action::_$u7b$$u7b$closure$u7d$$u7d$::h4fbbdfaa9a570c9c) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a

ld.lld: error: undefined symbol: _Unwind_GetTextRelBase
>>> referenced by gcc.rs:308 (/rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/panic_unwind/src/gcc.rs:308)
>>>               panic_unwind-e238540f8faf9927.panic_unwind.3kbstr8o-cgu.0.rcgu.o:(core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h46d93eef11d58b07) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a
>>> referenced by gcc.rs:308 (/rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/panic_unwind/src/gcc.rs:308)
>>>               panic_unwind-e238540f8faf9927.panic_unwind.3kbstr8o-cgu.0.rcgu.o:(panic_unwind::real_imp::find_eh_action::_$u7b$$u7b$closure$u7d$$u7d$::h47fb3c2732dca9b2) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a

ld.lld: error: undefined symbol: _Unwind_DeleteException
>>> referenced by gcc.rs:78 (/rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/panic_unwind/src/gcc.rs:78)
>>>               panic_unwind-e238540f8faf9927.panic_unwind.3kbstr8o-cgu.0.rcgu.o:(__rust_panic_cleanup) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a

ld.lld: error: undefined symbol: _Unwind_RaiseException
>>> referenced by gcc.rs:62 (/rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/panic_unwind/src/gcc.rs:62)
>>>               panic_unwind-e238540f8faf9927.panic_unwind.3kbstr8o-cgu.0.rcgu.o:(__rust_start_panic) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a

ld.lld: error: undefined symbol: _Unwind_GetLanguageSpecificData
>>> referenced by gcc.rs:300 (/rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/panic_unwind/src/gcc.rs:300)
>>>               panic_unwind-e238540f8faf9927.panic_unwind.3kbstr8o-cgu.0.rcgu.o:(rust_eh_personality) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a

ld.lld: error: undefined symbol: _Unwind_GetIPInfo
>>> referenced by gcc.rs:302 (/rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/panic_unwind/src/gcc.rs:302)
>>>               panic_unwind-e238540f8faf9927.panic_unwind.3kbstr8o-cgu.0.rcgu.o:(rust_eh_personality) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a

ld.lld: error: undefined symbol: _Unwind_GetRegionStart
>>> referenced by gcc.rs:307 (/rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/panic_unwind/src/gcc.rs:307)
>>>               panic_unwind-e238540f8faf9927.panic_unwind.3kbstr8o-cgu.0.rcgu.o:(rust_eh_personality) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a

ld.lld: error: undefined symbol: _Unwind_SetGR
>>> referenced by gcc.rs:251 (/rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/panic_unwind/src/gcc.rs:251)
>>>               panic_unwind-e238540f8faf9927.panic_unwind.3kbstr8o-cgu.0.rcgu.o:(rust_eh_personality) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a

ld.lld: error: undefined symbol: _Unwind_SetIP
>>> referenced by gcc.rs:254 (/rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/panic_unwind/src/gcc.rs:254)
>>>               panic_unwind-e238540f8faf9927.panic_unwind.3kbstr8o-cgu.0.rcgu.o:(rust_eh_personality) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a

ld.lld: error: undefined symbol: __deregister_frame
>>> referenced by wasmtime_jit.38whm15l-cgu.11
>>>               wasmtime_jit-64b0bceb8bfbac2b.wasmtime_jit.38whm15l-cgu.11.rcgu.o:(_$LT$wasmtime_jit..code_memory..CodeMemoryEntry$u20$as$u20$core..ops..drop..Drop$GT$::drop::hd0cb240d41257406) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a

ld.lld: error: undefined symbol: __register_frame
>>> referenced by wasmtime_jit.38whm15l-cgu.11
>>>               wasmtime_jit-64b0bceb8bfbac2b.wasmtime_jit.38whm15l-cgu.11.rcgu.o:(wasmtime_jit::code_memory::CodeMemory::publish::hafc3e987784edd10) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a

ld.lld: error: undefined symbol: _Unwind_GetCFA
>>> referenced by backtrace.5jl3q0p6-cgu.9
>>>               backtrace-b1b27a0e5161b8ca.backtrace.5jl3q0p6-cgu.9.rcgu.o:(core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hca7bc2ec8b552c8a (.llvm.14183395609191761177)) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a
>>> referenced by backtrace.5jl3q0p6-cgu.9
>>>               backtrace-b1b27a0e5161b8ca.backtrace.5jl3q0p6-cgu.9.rcgu.o:(backtrace::backtrace::Frame::sp::hb8cf940b60e44949) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a
>>> referenced by backtrace.5jl3q0p6-cgu.9
>>>               backtrace-b1b27a0e5161b8ca.backtrace.5jl3q0p6-cgu.9.rcgu.o:(backtrace::capture::Backtrace::create::_$u7b$$u7b$closure$u7d$$u7d$::h0062f0a6638f7a48 (.llvm.14183395609191761177)) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a

ld.lld: error: undefined symbol: _Unwind_FindEnclosingFunction
>>> referenced by backtrace.5jl3q0p6-cgu.9
>>>               backtrace-b1b27a0e5161b8ca.backtrace.5jl3q0p6-cgu.9.rcgu.o:(core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hca7bc2ec8b552c8a (.llvm.14183395609191761177)) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a
>>> referenced by backtrace.5jl3q0p6-cgu.9
>>>               backtrace-b1b27a0e5161b8ca.backtrace.5jl3q0p6-cgu.9.rcgu.o:(core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::hca7bc2ec8b552c8a (.llvm.14183395609191761177)) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a
>>> referenced by backtrace.5jl3q0p6-cgu.9
>>>               backtrace-b1b27a0e5161b8ca.backtrace.5jl3q0p6-cgu.9.rcgu.o:(backtrace::capture::Backtrace::create::_$u7b$$u7b$closure$u7d$$u7d$::h0062f0a6638f7a48 (.llvm.14183395609191761177)) in archive /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib/libwasmtime.a
>>> referenced 1 more times
error: LLDReportedFailure
simple...The following command exited with error code 1:
/usr/local/bin/zig build-exe /home/ubuntu/wasmtime-zig/examples/simple.zig -lwasmtime -lc --cache-dir /home/ubuntu/wasmtime-zig/zig-cache --global-cache-dir /root/.cache/zig --name simple --pkg-begin wasmtime /home/ubuntu/wasmtime-zig/src/main.zig --pkg-begin wasm /home/ubuntu/wasmtime-zig/.gyro/wasm-zig-zigwasm-github.com-3a96556d/pkg/src/main.zig --pkg-end --pkg-end -L /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/lib -isystem /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api/include --enable-cache 
The following command exited with error code 1 (expected 0):
cd . && /home/ubuntu/wasmtime-zig/zig-cache/o/c69a7c4ebdb9350db37863b2f992160c/build /usr/local/bin/zig . zig-cache /root/.cache/zig run -Dexample=simple --search-prefix /home/ubuntu/wasmtime-zig/wasmtime-v0.24.0-x86_64-linux-c-api

Windows fails as well, but I didn't spend any time investigating for now.

I'd really appreciate any idea/advice on how I to get Linux (and potentially even Windows ;) ) examples to build!

Updating to new (breaking) Wasmtime API

Wasmtime is getting new API rolled out: bytecodealliance/wasmtime#2897 It might be a good idea to refocus the efforts at migrating to it since it's breaking and the old one will not be supported any longer.

cc @Luukdegram

Rename anyref

anyref is no longer called so, it was changed to externref some time ago.