x/mobile: gomobile bind produces broken xcframework when used with Xcode 14

[darrarski]

What version of Go are you using (go version)?

$ go version
go version go1.17.13 darwin/arm64

Does this issue reproduce with the latest release?

Yes

What operating system and processor architecture are you using (go env)?

go env output

$ go env
GO111MODULE=""
GOARCH="arm64"
GOBIN=""
GOCACHE="/Users/darrarski/Library/Caches/go-build"
GOENV="/Users/darrarski/Library/Application Support/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="arm64"
GOHOSTOS="darwin"
GOINSECURE=""
GOMODCACHE="/Users/darrarski/.go-1.17/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Users/darrarski/.go-1.17"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/opt/homebrew/opt/go@1.17/libexec"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/opt/homebrew/opt/go@1.17/libexec/pkg/tool/darwin_arm64"
GOVCS=""
GOVERSION="go1.17.13"
GCCGO="gccgo"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD="/dev/null"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -arch arm64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/bh/t75dvhh939lbvnsq6n60mgtr0000gn/T/go-build1822123435=/tmp/go-build -gno-record-gcc-switches -fno-common"

What did you do?

I tried to build xcframework for iOS/macOS using Xcode 14 (14A309) developer tools with the following command:

$ gomobile bind -target ios,iossimulator,macos gitlab.com/elixxir/client/bindings

What did you expect to see?

I expected the command to create xcframework that can be used from iOS/macOS applications.

What did you see instead?

When trying to compile the iOS/macOS application that uses the resulting xcframework, following error occurs:

Undefined symbols for architecture arm64:
  "_objc_msgSend$initWithObject:", referenced from:
      -[RefTracker assignRefnumAndIncRefcount:] in Bindings(000007.o)
  "_objc_msgSend$setObject:forKeyedSubscript:", referenced from:
      -[RefTracker assignRefnumAndIncRefcount:] in Bindings(000007.o)
  "_objc_msgSend$intValue", referenced from:
  ...
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

I truncated the output because it just lists all functions and methods that gomobile exposes from go to Objective-C.

When creating the same xcframework with Xcode 13.4.1, everything works fine, without any issues.

[darrarski]

There was something messed up with my local environment. I reinstalled golang and can't reproduce the issue anymore. Sorry for the confusion.