Build Dummy Example Failed in MacOS M1

[dusty-cjh]

ENV

MacOS 2020 M1 chip

python3.9 (system)

Replication

# prepare
mkdir dummy && cd dummy
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:.
go env -w GOBIN="/usr/local/go/bin/"

# init project and install as python package
go mod init dummy.com/dum
go get github.com/go-python/gopy/_examples/hi

# error happened here
gopy build -output=out -vm=python3 github.com/go-python/gopy/_examples/hi

Output:

--- Processing package: github.com/go-python/gopy/_examples/hi ---

--- building package ---
gopy build -output=out -vm=python3 github.com/go-python/gopy/_examples/hi
goimports -w hi.go
go build -mod=mod -buildmode=c-shared -o hi_go.so .
cmd had error: exit status 1  output:
# dummy.com/dum/out
/usr/local/go/pkg/tool/darwin_arm64/link: running clang failed: exit status 1
ld: warning: directory not found for option '-L/Applications/Xcode.app/Contents/Developer/Library/Frameworks/Python3.framework/Versions/3.9/lib'
ld: library not found for -lpython3.9
clang: error: linker command failed with exit code 1 (use -v to see invocation)


2023/03/19 13:35:14 error dispatching command: exit status 1

Questions

The path /App****/Python3.framework/Versions/3.9/lib actually doesn't exist in my PC, so I think maybe it's because somewhere point to a wrong $PATH.

I found where the true python lib path is, and added it to $PATH, since this error seems due to lib not in the path:

sudo find /Library -name "python*"

# so here I got the python3 lib path in my PC
export PATH=/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/lib:$PATH

# re-run
gopy build -output=out -vm=python3 github.com/go-python/gopy/_examples/hi

# still the error output
--- Processing package: github.com/go-python/gopy/_examples/hi ---

--- building package ---
gopy build -output=out -vm=python3 github.com/go-python/gopy/_examples/hi
goimports -w hi.go
go build -mod=mod -buildmode=c-shared -o hi_go.so .
cmd had error: exit status 1  output:
# dummy.com/dum/out
/usr/local/go/pkg/tool/darwin_arm64/link: running clang failed: exit status 1
ld: warning: directory not found for option '-L/Applications/Xcode.app/Contents/Developer/Library/Frameworks/Python3.framework/Versions/3.9/lib'
ld: library not found for -lpython3.9
clang: error: linker command failed with exit code 1 (use -v to see invocation)


2023/03/19 13:49:54 error dispatching command: exit status 1

Am I doing any step wrong? could you give me some advice, thanks! 😊

[jieya907]

I got around this by passing the absolute path for the python binary to the -vm flag

[jieya907]

But the error I'm seeing is

ld: warning: ignoring file /Users/somename/miniconda3/lib/libpython3.10.dylib, building for macOS-x86_64 but attempting to link with file built for macOS-arm64
Undefined symbols for architecture x86_64:
  "_PyComplex_AsCComplex", referenced from:
      __cgo_19fe0cd99635_Cfunc_PyComplex_AsCComplex in 000001.o
     (maybe you meant: __cgo_19fe0cd99635_Cfunc_PyComplex_AsCComplex)
  "_PyComplex_FromDoubles", referenced from:
      __cgo_19fe0cd99635_Cfunc_PyComplex_FromDoubles in 000001.o
     (maybe you meant: __cgo_19fe0cd99635_Cfunc_PyComplex_FromDoubles)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)```

Should we maybe pass in some flags specifically for arm?

[saurav-orca]

Can you try setting the env variable - ARCHFLAGS=-arch arm64?
Also try GOARCH=arm64 and GOOS=darwin