WASM Target Not Supported on OSX

[drush]

Adding a tracking case for monitoring progress of WASM target when building from OSX.

OSX developers cannot use tinygo to build WASM targets because WASM is an experimental feature in LLVM

$ tinygo build -o test.wasm test.go
error: No available targets are compatible with this triple.

The Facts:

• Tinygo can build on OSX when LLVM 7 is installed via brew. However, WASM targets are experimental in LLVM 7 and not supported by the homebrew recipe.
• WASM will be supported in LLVM 8 (Expected release March 2019)

RELATED:

• OS X #47 OSX Support
• Tracking LLVM 8 progress
• Rejected PR to add WASM target to LLVM via Homebrew

Possible Workarounds:

• Wait for LLVM 8 in March of 2019
• Build LLVM 7 from source with full WASM support (Does this work?)
• ???

[deadprogram]

Hi @drush been quite a while, hope all is well.

You can use the Docker image to build WASM on macOS. Check out https://tinygo.readthedocs.io/en/latest/docker.html for more info.

[deadprogram]

We now have a Homebrew brew for installing LLVM with the required dependencies to run on macOS: https://github.com/tinygo-org/homebrew-tools

Assuming that this works fine for everyone, we can update the docs site accordingly.

[peterhellberg]

Unfortunately brew reinstall tinygo-org/tools/llvm errored out with this output under macOS High Sierra (10.13.6), is Mojave required?

==> Downloading https://releases.llvm.org/7.0.1/compiler-rt-7.0.1.src.tar.xz
######################################################################## 100.0%
==> cmake -G Unix Makefiles .. -DCMAKE_C_FLAGS_RELEASE=-DNDEBUG -DCMAKE_CXX_FL
==> make


==> make install
==> make install-xcode-toolchain
Last 15 lines from /Users/peter/Library/Logs/Homebrew/llvm/04.make:
gmake[9]: Leaving directory '/private/tmp/llvm-20190107-34453-j3axuk/llvm-7.0.1.src/build/tools/clang/runtime/compiler-rt-bins'
[  7%] Built target RTXrayFDR.osx
gmake[8]: Leaving directory '/private/tmp/llvm-20190107-34453-j3axuk/llvm-7.0.1.src/build/tools/clang/runtime/compiler-rt-bins'
gmake[7]: *** [Makefile:130: all] Error 2
gmake[7]: Leaving directory '/private/tmp/llvm-20190107-34453-j3axuk/llvm-7.0.1.src/build/tools/clang/runtime/compiler-rt-bins'
gmake[6]: *** [tools/clang/runtime/CMakeFiles/compiler-rt.dir/build.make:116: tools/clang/runtime/compiler-rt-stamps/compiler-rt-build] Error 2
gmake[6]: Leaving directory '/private/tmp/llvm-20190107-34453-j3axuk/llvm-7.0.1.src/build'
gmake[5]: *** [CMakeFiles/Makefile2:35934: tools/clang/runtime/CMakeFiles/compiler-rt.dir/all] Error 2
gmake[5]: Leaving directory '/private/tmp/llvm-20190107-34453-j3axuk/llvm-7.0.1.src/build'
gmake[4]: *** [Makefile:155: all] Error 2
gmake[4]: Leaving directory '/private/tmp/llvm-20190107-34453-j3axuk/llvm-7.0.1.src/build'
make[3]: *** [tools/xcode-toolchain/CMakeFiles/build-xcode-toolchain] Error 2
make[2]: *** [tools/xcode-toolchain/CMakeFiles/build-xcode-toolchain.dir/all] Error 2
make[1]: *** [tools/xcode-toolchain/CMakeFiles/install-xcode-toolchain.dir/rule] Error 2
make: *** [install-xcode-toolchain] Error 2

If reporting this issue please do so at (not Homebrew/brew or Homebrew/core):
https://github.com/tinygo-org/homebrew-tools/issues


Error: A newer Command Line Tools release is available.
Update them from Software Update in the App Store.

[deadprogram]

Hi @peterhellberg did you try running xcode-select --install to update your XCode CLI tools?

[peterhellberg]

@deadprogram I upgraded the command line tools via Xcode (10.1) and ran brew install tinygo-org/tools/llvm again. (Got the same error output)

$ brew install tinygo-org/tools/llvm
Updating Homebrew...
Fast-forwarded master to origin/master.
Fast-forwarded master to origin/master.
Fast-forwarded master to origin/master.
Fast-forwarded master to origin/master.
==> Auto-updated Homebrew!
Updated Homebrew from 6cd4c317 to 464b41eb.
Updated 3 taps (homebrew/cask-versions, homebrew/core and homebrew/cask).
==> Updated Formulae
mkcert ✔               eslint                 fonttools              libsodium

==> Installing llvm from tinygo-org/tools
==> Downloading https://releases.llvm.org/7.0.1/llvm-7.0.1.src.tar.xz
Already downloaded: /Users/peter/Library/Caches/Homebrew/downloads/deef0de57101b23ba53aba53b9b7a08ea1b48cfd5e538dd34119e24f9d8ed6e0--llvm-7.0.1.src.tar.xz
==> Downloading https://releases.llvm.org/7.0.1/cfe-7.0.1.src.tar.xz
Already downloaded: /Users/peter/Library/Caches/Homebrew/downloads/e88421c4653fa9f4ffce3393a1f6d5142d07908c95d1f75a773666512dbe373b--cfe-7.0.1.src.tar.xz
==> Downloading https://releases.llvm.org/7.0.1/clang-tools-extra-7.0.1.src.tar.xz
Already downloaded: /Users/peter/Library/Caches/Homebrew/downloads/c055cc8e0627d814063653c11d38b48b74bc35a0b0d39dbf7c65c1972b9c22ee--clang-tools-extra-7.0.1.src.tar.xz
==> Downloading https://releases.llvm.org/7.0.1/openmp-7.0.1.src.tar.xz
Already downloaded: /Users/peter/Library/Caches/Homebrew/downloads/430346c8a0cf1ec6fc94c92b21b0fc3aa2aa857e5731e4208fd8e72859db0222--openmp-7.0.1.src.tar.xz
==> Downloading https://releases.llvm.org/7.0.1/libcxx-7.0.1.src.tar.xz
Already downloaded: /Users/peter/Library/Caches/Homebrew/downloads/0d33e60b8ed8825cb5a22aab98781fafbe296a8bbb8d96df536e794d170cb6e4--libcxx-7.0.1.src.tar.xz
==> Downloading https://releases.llvm.org/7.0.1/libunwind-7.0.1.src.tar.xz
Already downloaded: /Users/peter/Library/Caches/Homebrew/downloads/a1fbaf33a6a9d1b1707d9dfd204a320e91e4196f5e0e137986b83dfb06fbc8d0--libunwind-7.0.1.src.tar.xz
==> Downloading https://releases.llvm.org/7.0.1/lld-7.0.1.src.tar.xz
Already downloaded: /Users/peter/Library/Caches/Homebrew/downloads/28d82806d84a7bbd190fe047904a84918fb8a67efb334b465d683f658a0546f4--lld-7.0.1.src.tar.xz
==> Downloading https://releases.llvm.org/7.0.1/polly-7.0.1.src.tar.xz
Already downloaded: /Users/peter/Library/Caches/Homebrew/downloads/537fd9fbe4f65f37591471e0ad84cb8c02bcbb00b9758b4395bec8facbdfeb3c--polly-7.0.1.src.tar.xz
==> Downloading https://releases.llvm.org/7.0.1/compiler-rt-7.0.1.src.tar.xz
Already downloaded: /Users/peter/Library/Caches/Homebrew/downloads/a82ca2001daf97c74990a94300ccefa01e18013f3a7d33e45b37eb029aaec817--compiler-rt-7.0.1.src.tar.xz
==> cmake -G Unix Makefiles .. -DCMAKE_C_FLAGS_RELEASE=-DNDEBUG -DCMAKE_CXX_FLAGS_RELEASE=-D
==> make
==> make install
==> make install-xcode-toolchain
Last 15 lines from /Users/peter/Library/Logs/Homebrew/llvm/04.make:
gmake[9]: Leaving directory '/private/tmp/llvm-20190107-57109-hj7rou/llvm-7.0.1.src/build/tools/clang/runtime/compiler-rt-bins'
[  8%] Built target RTXrayFDR.osx
gmake[8]: Leaving directory '/private/tmp/llvm-20190107-57109-hj7rou/llvm-7.0.1.src/build/tools/clang/runtime/compiler-rt-bins'
gmake[7]: *** [Makefile:130: all] Error 2
gmake[7]: Leaving directory '/private/tmp/llvm-20190107-57109-hj7rou/llvm-7.0.1.src/build/tools/clang/runtime/compiler-rt-bins'
gmake[6]: *** [tools/clang/runtime/CMakeFiles/compiler-rt.dir/build.make:116: tools/clang/runtime/compiler-rt-stamps/compiler-rt-build] Error 2
gmake[6]: Leaving directory '/private/tmp/llvm-20190107-57109-hj7rou/llvm-7.0.1.src/build'
gmake[5]: *** [CMakeFiles/Makefile2:35934: tools/clang/runtime/CMakeFiles/compiler-rt.dir/all] Error 2
gmake[5]: Leaving directory '/private/tmp/llvm-20190107-57109-hj7rou/llvm-7.0.1.src/build'
gmake[4]: *** [Makefile:155: all] Error 2
gmake[4]: Leaving directory '/private/tmp/llvm-20190107-57109-hj7rou/llvm-7.0.1.src/build'
make[3]: *** [tools/xcode-toolchain/CMakeFiles/build-xcode-toolchain] Error 2
make[2]: *** [tools/xcode-toolchain/CMakeFiles/build-xcode-toolchain.dir/all] Error 2
make[1]: *** [tools/xcode-toolchain/CMakeFiles/install-xcode-toolchain.dir/rule] Error 2
make: *** [install-xcode-toolchain] Error 2

If reporting this issue please do so at (not Homebrew/brew or Homebrew/core):
https://github.com/tinygo-org/homebrew-tools/issues


Error: A newer Command Line Tools release is available.
Update them from Software Update in the App Store.

Another day I'll check if this formula can be installed on a machine running Mojave.

[anarcher]

Error: A newer Command Line Tools release is available.
Update them from Software Update in the App Store.

How about sudo xcode-select --reset?

Homebrew/legacy-homebrew#24014

[peterhellberg]

@anarcher Did unfortunately not solve the issue (or do anything really since I have the latest version of the CLI-tools installed)

[Zambiorix]

Installing llvm7 via brew (https://github.com/tinygo-org/homebrew-tools) gives me the following output (install completes fine)

==> llvm7
To use the bundled libc++ please add the following LDFLAGS:
  LDFLAGS="-L/usr/local/opt/llvm7/lib -Wl,-rpath,/usr/local/opt/llvm7/lib"

Installing tinygo works for me (High Sierra 10.13.6) but I get following warnings:

VZMS-MBP-2013-Sierra:~ Gerd$ go get -u github.com/tinygo-org/tinygo
# github.com/tinygo-org/tinygo/loader
ld: warning: directory not found for option '-L/usr/lib/llvm-7/lib'
# tinygo.org/x/go-llvm
ld: warning: directory not found for option '-L/usr/local/opt/llvm/lib'
# github.com/tinygo-org/tinygo
ld: warning: directory not found for option '-L/usr/lib/llvm-7/lib'
ld: warning: directory not found for option '-L/usr/local/opt/llvm/lib'
VZMS-MBP-2013-Sierra:~ Gerd$ 

When trying to build something I get the following error :

VZMS-MBP-2013-Sierra:tinygo-wasm Gerd$ tinygo build -o wasm.wasm wasm.go
error: failed to link /var/folders/zh/mc43bk2n5nb0cbn8_6y6gr640000gp/T/tinygo536710333/main: exec: "wasm-ld-7": executable file not found in $PATH

Not sure what to do next...

[Zambiorix]

https://github.com/tinygo-org/homebrew-tools

Above link says:

brew tap tinygo-org/tools
brew install llvm7

shouldn't that be this?

brew tap tinygo-org/homebrew-tools
brew install llvm7

I uninstalled removed tinygo and uninstalled llvm7 and then:

brew tap tinygo-org/tools
brew tap tinygo-org/homebrew-tools
brew install llvm7

But then I get the following:

==> Tapping tinygo-org/tools
Cloning into '/usr/local/Homebrew/Library/Taps/tinygo-org/homebrew-tools'...
remote: Enumerating objects: 4, done.
remote: Counting objects: 100% (4/4), done.
remote: Compressing objects: 100% (4/4), done.
remote: Total 4 (delta 0), reused 2 (delta 0), pack-reused 0
Unpacking objects: 100% (4/4), done.
Tapped 1 formula (29 files, 38.3KB).
VZMS-MBP-2013-Sierra:~ Gerd$ brew install llvm7
==> Installing llvm7 from tinygo-org/tools

I notice that brew is cloning into the correct folder , but it still says

==> Tapping tinygo-org/tools

not sure where that comes from.
I'll report back when it's done and works or not

[deadprogram]

Hi @Zambiorix that is part of the default naming for external taps for Homebrew. See https://github.com/Homebrew/brew/blob/master/docs/Taps.md#repository-naming-conventions-and-assumptions for more information.

[Zambiorix]

thanks @deadprogram

But I still can't build tinygo on my mac

llvm7 seems to be installed correctly but tinygo seems to look for it in the wrong folder

/*
#cgo CFLAGS: -I/usr/lib/llvm-7/include
#cgo LDFLAGS: -L/usr/lib/llvm-7/lib -lclang
*/

I forked the tinygo repo and changed the flags in loader to

/*
#cgo CFLAGS: -I/usr/local/opt/llvm7/include
#cgo LDFLAGS: -L/usr/local/opt/llvm7/lib -lclang
*/

But building tinygo still results in an error:

VZMS-MBP-2013-Sierra:tinygo Gerd$ go install
# github.com/Zambiorix/tinygo/loader
Undefined symbols for architecture x86_64:
  "_clang_Cursor_getArgument", referenced from:
      __cgo_2567d3c94687_Cfunc_clang_Cursor_getArgument in _x002.o
     (maybe you meant: __cgo_2567d3c94687_Cfunc_clang_Cursor_getArgument)
  "_clang_Cursor_getNumArguments", referenced from:
      __cgo_2567d3c94687_Cfunc_clang_Cursor_getNumArguments in _x002.o
     (maybe you meant: __cgo_2567d3c94687_Cfunc_clang_Cursor_getNumArguments)
  "_clang_Type_getSizeOf", referenced from:
      __cgo_2567d3c94687_Cfunc_clang_Type_getSizeOf in _x002.o
     (maybe you meant: __cgo_2567d3c94687_Cfunc_clang_Type_getSizeOf)
  "_clang_createIndex", referenced from:
      __cgo_2567d3c94687_Cfunc_clang_createIndex in _x002.o
     (maybe you meant: __cgo_2567d3c94687_Cfunc_clang_createIndex)
  "_clang_disposeIndex", referenced from:
      __cgo_2567d3c94687_Cfunc_clang_disposeIndex in _x002.o
     (maybe you meant: __cgo_2567d3c94687_Cfunc_clang_disposeIndex)
  "_clang_disposeString", referenced from:
      __cgo_2567d3c94687_Cfunc_clang_disposeString in _x002.o
     (maybe you meant: __cgo_2567d3c94687_Cfunc_clang_disposeString)
  "_clang_disposeTranslationUnit", referenced from:
      __cgo_2567d3c94687_Cfunc_clang_disposeTranslationUnit in _x002.o
     (maybe you meant: __cgo_2567d3c94687_Cfunc_clang_disposeTranslationUnit)
  "_clang_getArgType", referenced from:
      __cgo_2567d3c94687_Cfunc_clang_getArgType in _x002.o
     (maybe you meant: __cgo_2567d3c94687_Cfunc_clang_getArgType)
  "_clang_getCString", referenced from:
      __cgo_2567d3c94687_Cfunc_clang_getCString in _x002.o
     (maybe you meant: __cgo_2567d3c94687_Cfunc_clang_getCString)
  "_clang_getCursorKind", referenced from:
      __cgo_2567d3c94687_Cfunc_clang_getCursorKind in _x002.o
     (maybe you meant: __cgo_2567d3c94687_Cfunc_clang_getCursorKind)
  "_clang_getCursorResultType", referenced from:
      __cgo_2567d3c94687_Cfunc_clang_getCursorResultType in _x002.o
     (maybe you meant: __cgo_2567d3c94687_Cfunc_clang_getCursorResultType)
  "_clang_getCursorSpelling", referenced from:
      __cgo_2567d3c94687_Cfunc_clang_getCursorSpelling in _x002.o
     (maybe you meant: __cgo_2567d3c94687_Cfunc_clang_getCursorSpelling)
  "_clang_getCursorType", referenced from:
      __cgo_2567d3c94687_Cfunc_clang_getCursorType in _x002.o
     (maybe you meant: __cgo_2567d3c94687_Cfunc_clang_getCursorType)
  "_clang_getNumDiagnostics", referenced from:
      __cgo_2567d3c94687_Cfunc_clang_getNumDiagnostics in _x002.o
     (maybe you meant: __cgo_2567d3c94687_Cfunc_clang_getNumDiagnostics)
  "_clang_getPointeeType", referenced from:
      __cgo_2567d3c94687_Cfunc_clang_getPointeeType in _x002.o
     (maybe you meant: __cgo_2567d3c94687_Cfunc_clang_getPointeeType)
  "_clang_getTranslationUnitCursor", referenced from:
      __cgo_2567d3c94687_Cfunc_clang_getTranslationUnitCursor in _x002.o
     (maybe you meant: __cgo_2567d3c94687_Cfunc_clang_getTranslationUnitCursor)
  "_clang_getTypeSpelling", referenced from:
      __cgo_2567d3c94687_Cfunc_clang_getTypeSpelling in _x002.o
     (maybe you meant: __cgo_2567d3c94687_Cfunc_clang_getTypeSpelling)
  "_clang_getTypedefDeclUnderlyingType", referenced from:
      __cgo_2567d3c94687_Cfunc_clang_getTypedefDeclUnderlyingType in _x002.o
     (maybe you meant: __cgo_2567d3c94687_Cfunc_clang_getTypedefDeclUnderlyingType)
  "_clang_getTypedefName", referenced from:
      __cgo_2567d3c94687_Cfunc_clang_getTypedefName in _x002.o
     (maybe you meant: __cgo_2567d3c94687_Cfunc_clang_getTypedefName)
  "_clang_isFunctionTypeVariadic", referenced from:
      __cgo_2567d3c94687_Cfunc_clang_isFunctionTypeVariadic in _x002.o
     (maybe you meant: __cgo_2567d3c94687_Cfunc_clang_isFunctionTypeVariadic)
  "_clang_parseTranslationUnit2", referenced from:
      __cgo_2567d3c94687_Cfunc_clang_parseTranslationUnit2 in _x002.o
     (maybe you meant: __cgo_2567d3c94687_Cfunc_clang_parseTranslationUnit2)
  "_clang_visitChildren", referenced from:
      __cgo_2567d3c94687_Cfunc_clang_visitChildren in _x002.o
     (maybe you meant: __cgo_2567d3c94687_Cfunc_clang_visitChildren)
ld: symbol(s) not found for architecture x86_64
clang-7: error: linker command failed with exit code 1 (use -v to see invocation)

any idea how I can build tinygo on my mac?

[aykevl]

I'm not exactly sure what goes wrong here. Maybe -lclang links in libclang.a instead of libclang.so?

[Zambiorix]

I can't find a libclang.so or libclang.a on my system, only libclang.dylib ...