Compiling your crate to WebAssembly failed

[pacu]

Hi! I'm trying to build WebZ.js from source using the README.md instructions and I'm not being able to.

I have all the pre-requisites installed.
wasm32-unknown-unknown is installed and up-to-date and the nightly build specified by the toolchain file also is.

Mac: M1 Max 32 GB
OS: Mac OS 14.7 (23H124)

just build-wallet
cd crates/webz-wallet && wasm-pack build -t web --release --scope webzjs --out-dir ../../packages/webz-wallet --no-default-features --features="wasm wasm-parallel " -Z build-std="panic_abort,std"
[INFO]: 🎯  Checking for the Wasm target...
[INFO]: 🌀  Compiling to Wasm...
    Updating crates.io index
   Compiling secp256k1-sys v0.8.1
   Compiling maybe-rayon v0.1.1
   Compiling bellman v0.14.0
   Compiling thread_local v1.1.8
   Compiling hash32 v0.2.1
   Compiling smallvec v1.13.2
   Compiling wagyu-zcash-parameters-4 v0.2.0
   Compiling stable_deref_trait v1.2.0
   Compiling wagyu-zcash-parameters-5 v0.2.0
   Compiling wagyu-zcash-parameters-3 v0.2.0
   Compiling halo2_proofs v0.3.0
   Compiling wagyu-zcash-parameters-2 v0.2.0
   Compiling wagyu-zcash-parameters-1 v0.2.0
   Compiling wagyu-zcash-parameters-6 v0.2.0
   Compiling tracing-subscriber v0.3.18
   Compiling wagyu-zcash-parameters v0.2.0
   Compiling heapless v0.7.17
   Compiling async-std v1.13.0
   Compiling futures v0.3.30
   Compiling unicode-normalization v0.1.23
   Compiling httparse v1.9.4
   Compiling pbkdf2 v0.12.2
   Compiling wasm-streams v0.4.0
   Compiling uuid v1.10.0
   Compiling cobs v0.2.3
   Compiling sapling-crypto v0.3.0
   Compiling tokio_with_wasm v0.7.1
   Compiling bip0039 v0.12.0
   Compiling postcard v1.0.10
   Compiling indexed_db_futures v0.5.0
   Compiling tracing-web v0.1.3
The following warnings were emitted during compilation:

warning: [email protected]: error: unable to create target: 'No available targets are compatible with triple "wasm32-unknown-unknown"'
warning: [email protected]: 1 error generated.
warning: [email protected]: error: unable to create target: 'No available targets are compatible with triple "wasm32-unknown-unknown"'
warning: [email protected]: 1 error generated.

error: failed to run custom build command for `secp256k1-sys v0.8.1`

Caused by:
  process didn't exit successfully: `[REDACTED]/WebZjs/target/release/build/secp256k1-sys-2ec8c9dd4060fdcd/build-script-build` (exit status: 1)
  --- stdout
  OUT_DIR = Some([REDACTED]/WebZjs/target/wasm32-unknown-unknown/release/build/secp256k1-sys-ff7bc03772ba7720/out)
  TARGET = Some(wasm32-unknown-unknown)
  OPT_LEVEL = Some(3)
  HOST = Some(aarch64-apple-darwin)
  cargo:rerun-if-env-changed=CC_wasm32-unknown-unknown
  CC_wasm32-unknown-unknown = None
  cargo:rerun-if-env-changed=CC_wasm32_unknown_unknown
  CC_wasm32_unknown_unknown = None
  cargo:rerun-if-env-changed=TARGET_CC
  TARGET_CC = None
  cargo:rerun-if-env-changed=CC
  CC = None
  cargo:rerun-if-env-changed=CC_ENABLE_DEBUG_OUTPUT
  RUSTC_WRAPPER = None
  cargo:rerun-if-env-changed=CRATE_CC_NO_DEFAULTS
  CRATE_CC_NO_DEFAULTS = None
  cargo:rerun-if-env-changed=WASI_SYSROOT
  WASI_SYSROOT = None
  DEBUG = Some(false)
  cargo:rerun-if-env-changed=CFLAGS_wasm32-unknown-unknown
  CFLAGS_wasm32-unknown-unknown = None
  cargo:rerun-if-env-changed=CFLAGS_wasm32_unknown_unknown
  CFLAGS_wasm32_unknown_unknown = None
  cargo:rerun-if-env-changed=TARGET_CFLAGS
  TARGET_CFLAGS = None
  cargo:rerun-if-env-changed=CFLAGS
  CFLAGS = None
  OUT_DIR = Some([REDACTED]/WebZjs/target/wasm32-unknown-unknown/release/build/secp256k1-sys-ff7bc03772ba7720/out)
  cargo:rerun-if-env-changed=CC_ENABLE_DEBUG_OUTPUT
  cargo:rerun-if-env-changed=CRATE_CC_NO_DEFAULTS
  CRATE_CC_NO_DEFAULTS = None
  cargo:rerun-if-env-changed=WASI_SYSROOT
  WASI_SYSROOT = None
  cargo:rerun-if-env-changed=CFLAGS_wasm32-unknown-unknown
  CFLAGS_wasm32-unknown-unknown = None
  cargo:rerun-if-env-changed=CFLAGS_wasm32_unknown_unknown
  CFLAGS_wasm32_unknown_unknown = None
  cargo:rerun-if-env-changed=TARGET_CFLAGS
  TARGET_CFLAGS = None
  cargo:rerun-if-env-changed=CFLAGS
  CFLAGS = None
  cargo:warning=error: unable to create target: 'No available targets are compatible with triple "wasm32-unknown-unknown"'
  cargo:warning=1 error generated.
  cargo:warning=error: unable to create target: 'No available targets are compatible with triple "wasm32-unknown-unknown"'
  cargo:warning=1 error generated.

  --- stderr


  error occurred: Command "clang" "-O3" "-ffunction-sections" "-fdata-sections" "-fPIC" "-fno-exceptions" "--target=wasm32-unknown-unknown" "-I" "depend/secp256k1/" "-I" "depend/secp256k1/include" "-I" "depend/secp256k1/src" "-I" "wasm/wasm-sysroot" "-I" "wasm/wasm-sysroot" "-Wall" "-Wextra" "-DSECP256K1_API=" "-DENABLE_MODULE_ECDH=1" "-DENABLE_MODULE_SCHNORRSIG=1" "-DENABLE_MODULE_EXTRAKEYS=1" "-DECMULT_GEN_PREC_BITS=4" "-DECMULT_WINDOW_SIZE=15" "-DUSE_EXTERNAL_DEFAULT_CALLBACKS=1" "-o" "[REDACTED]/WebZjs/target/wasm32-unknown-unknown/release/build/secp256k1-sys-ff7bc03772ba7720/out/3fec8a5f3c4f77fb-wasm.o" "-c" "wasm/wasm.c" with args clang did not execute successfully (status code exit status: 1).


warning: build failed, waiting for other jobs to finish...
Error: Compiling your crate to WebAssembly failed
Caused by: Compiling your crate to WebAssembly failed
Caused by: failed to execute `cargo build`: exited with exit status: 101
  full command: cd "[REDACTED]/WebZjs/crates/webz-wallet" && "cargo" "build" "--lib" "--release" "--target" "wasm32-unknown-unknown" "--no-default-features" "--features=wasm wasm-parallel " "-Z" "build-std=panic_abort,std"
error: Recipe `build-wallet` failed on line 10 with exit code 1
error: Recipe `build` failed on line 5 with exit code 1

[willemolding]

Thanks for posting.

I think this error might be related to having an older versions of clang and llvm installed that don't support building for wasm. What is the output of running

clang --version

and

llvm-gcc --version

on your machine?

You might be able to update them through xcode-tools or some other way depending on how you have things set up.

We will definitely update the pre-requisites in the readme once we figure out what it is exactly.

[pacu]

Oh! I should have checked this before upgrading the OS :/

[pacu]

@willemolding

clang --version
Apple clang version 16.0.0 (clang-1600.0.26.4)
Target: arm64-apple-darwin24.1.0
Thread model: posix

and same for

llvm-gcc --version
Apple clang version 16.0.0 (clang-1600.0.26.4)
Target: arm64-apple-darwin24.1.0
Thread model: posix

[ec2]

@pacu Can you try updating your clang version? This is mine:

clang --version
Homebrew clang version 18.1.8
Target: arm64-apple-darwin24.1.0
Thread model: posix

llvm-gcc --version
Apple clang version 15.0.0 (clang-1500.3.9.4)
Target: arm64-apple-darwin24.1.0
Thread model: posix