tinygo-org/tinygo

could not find wasm-opt, set the WASMOPT environment variable to override

Closed this issue · 13 comments

ymzuiku commented

In macOS Monterey 12.0.1, cpu m1 pro

main.go:

package main

import "fmt"

func main() {
	fmt.Println("hello tinygo")
}

Use tinygo build:

$ tinygo build -o wasm.wasm -target wasm ./main.go

Results:

error: could not find wasm-opt, set the WASMOPT environment variable to override
kenbell commented

If installing from source, you can do git submodule update --init then make binaryen. I don't use WASM, but from why i understand asyncify was made the default scheduler, so needs wasm-opt.

ymzuiku commented

@kenbell Thank you

If installing from source, you can do git submodule update --init then make binaryen. I don't use WASM, but from why i understand asyncify was made the default scheduler, so needs wasm-opt.

I installing from brew:

brew tap tinygo-org/tools
brew install tinygo
kenbell commented

Looks like the brew formula needs updating. Does brew install binaryen fix it?

  • 👍1
malmod commented

Looks like the brew formula needs updating. Does brew install binaryen fix it?

I had the same issue, and yes this fixed it! Thanks

deadprogram commented

Does anyone have time for a PR to https://github.com/tinygo-org/homebrew-tools?

fgsch commented

@deadprogram Sure, I will open a PR to add wasm-opt.

deadprogram commented

It is getting built here https://github.com/tinygo-org/tinygo/blob/dev/.circleci/config.yml#L155-L160

Is the problem actually just one of the path not getting set? In other words, just adding something like the following to the TinyGo Homebrew recipe? (not tested)

   libexec.install "bin/wasm-opt"
   (bin/"wasm-opt").write_env_script libexec/"wasm-opt",
      :WASMOPT => prefix
fgsch commented

@deadprogram I believe tinygo-org/homebrew-tools#16 is enough but I will test it shortly.

fgsch commented

@deadprogram while I haven't tested the PR above building the formula, copying wasm-opt inside libexec/bin made the error go away, so I'm confident that PR should fix this issue. Copying wasm-opt to $prefix/bin is not needed and might overwrite an existing binaryen installation. I've updated the PR to copy wasm-opt to bin without creating the symlink.

ymzuiku commented

@kenbell

brew install binaryen fix it?

Yes this fixed it! Thanks

deadprogram commented

Confirmed that the updated brew formula that @fgsch works to correct this, and has been merged into the master branch in the Homebrew tools repo for TinyGo. Thank you!

LennyPenny commented

I've had the same issue on fedora btw, had to manually install binaryen

  • 👍2
iamshreeram commented

@deadprogram, I just installed tinygo using homebrew. Here is the version information:

tinygo version 0.30.0 darwin/amd64 (using go version go1.21.3 and LLVM version 16.0.1)

However, I am still encountering the following error:

error: could not find wasm-opt, set the WASMOPT environment variable to override

Fortunately, the issue was resolved after installing binaryen. Can you confirm if the homebrew recipe has been updated to address this problem?