mac m1 can not run cgo

[benggee]

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

$ go version
go version go1.16.3 darwin/arm64

go env Output

$ go env
GO111MODULE="on"
GOARCH="arm64"
GOBIN=""
GOCACHE="/Users/xxx/Library/Caches/go-build"
GOENV="/Users/xxx/Library/Application Support/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="arm64"
GOHOSTOS="darwin"
GOINSECURE=""
GOMODCACHE="/Users/xxx/go/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Users/mrbinary/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/darwin_arm64"
GOVCS=""
GOVERSION="go1.16.3"
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/ny/w9t1brsx7hq3gjc0tlfy6yyc0000gn/T/go-build2251407779=/tmp/go-build -gno-record-gcc-switches -fno-common"

What did you do?

Undefined symbols for architecture arm64:
"_create_byte_array", referenced from:
__cgo_21bc20011f30_Cfunc_create_byte_array in _x002.o
(maybe you meant: __cgo_21bc20011f30_Cfunc_create_byte_array)
"_decrypt", referenced from:
__cgo_21bc20011f30_Cfunc_decrypt in _x002.o
(maybe you meant: __cgo_21bc20011f30_Cfunc_decrypt)
"_get_key", referenced from:
__cgo_21bc20011f30_C2func_get_key in _x002.o
__cgo_21bc20011f30_Cfunc_get_key in _x002.o
(maybe you meant: __cgo_21bc20011f30_Cfunc_get_key, __cgo_21bc20011f30_C2func_get_key )
"_release_byte_array", referenced from:
__cgo_21bc20011f30_Cfunc_release_byte_array in _x002.o
(maybe you meant: __cgo_21bc20011f30_Cfunc_release_byte_array)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

[cherrymui]

The darwin/arm64 port supports cgo. Could you provide the instruction to reproduce this, including the program you are building? Thanks.

[benggee]

The environment variable of my IDE is like this:
GOARCH=arm64;GOOS=darwin

My version of the clang compiler like this:
Target: arm64-apple-darwin20.2.0 Thread model: posix InstalledDir: /Library/Developer/CommandLineTools/usr/bin

[cherrymui]

What IDE is it? Do you know what commands does it run when you build your program? Could you capture the full error message? And what is the program source code? Thanks.

[ChristianOrgler]

Similar issue,

same env variables, clang compiler:
Apple clang version 13.0.0 (clang-1300.0.18.6) Target: arm64-apple-darwin20.5.0 Thread model: posix InstalledDir: /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin

I'm trying to build wireguard's go kit and it misses symbols for arm64 in runtime/cgo:

go build -ldflags=-w -trimpath -v -o "/Users/someone/Library/Developer/Xcode/DerivedData/something-bipqhwawbdbbciblevyubvleyofz/Build/Intermediates.noindex/something.build/Debug-iphonesimulator/wireguard-go-bridge/libwg-go-arm64.a" -buildmode c-archive

runtime/cgo
# runtime/cgo

Undefined symbols for architecture arm64:
  "_darwin_arm_init_mach_exception_handler", referenced from:
      _x_cgo_init in _x004.o

  "_darwin_arm_init_thread_exception_port", referenced from:
      _threadentry in _x004.o
      _x_cgo_init in _x004.o

ld: symbol(s) not found for architecture arm64

[cherrymui]

@ChristianOrgler are you building for macOS or iOS?

The references of those two functions should only appear if TARGET_OS_IPHONE is #defined.

Could you share your environment when running the go build? Thanks.

[ChristianOrgler]

I'm building for iOS - yet I figured out that the culprit is with the Makefile of the vendor not GO in particular.