With newer xcode (12+, I think), the default behaviour is to build
universal binaries that include native code for both arm64 and x86_64.
On older xcode, the default was to only target x86_64.
I am not sure why, but "hid.cpython-310-darwin.so" is not built
reproducibly when it is "universal".
(Even for consecutive builds done on the same machine.)
```
- + diff='Files /tmp/electrum_compare_dmg/signed_app/Electrum.app/Contents/MacOS/hid.cpython-310-darwin.so and /tmp/electrum_compare_dmg/dmg2/Electrum.app/Contents/MacOS/hid.cpython-310-darwin.so differ
```
This commit works around the reproducibly issue by making clang only
build for the x86_64 target. The binary should still be able to run
on arm64 macs using rosetta (same with previous versions of Electrum).
-----
The `lipo` tool can tell what archs a shared object is built for, e.g.:
```
$ lipo -info /Users/vagrant/electrum/contrib/osx/build-venv/lib/python3.10/site-packages/hid.cpython-310-darwin.so
Non-fat file: /Users/vagrant/electrum/contrib/osx/build-venv/lib/python3.10/site-packages/hid.cpython-310-darwin.so is architecture: x86_64
```
For quick testing, we don't need to build the whole .app, only hid.so:
```
source /Users/vagrant/electrum/contrib/osx/build-venv/bin/activate
export CFLAGS="-g0"
python3 -m pip install -I --no-build-isolation --no-dependencies --no-binary :all: --no-warn-script-location hidapi==0.14.0
strip -x /Users/vagrant/electrum/contrib/osx/build-venv/lib/python3.10/site-packages/hid.cpython-310-darwin.so
cp /Users/vagrant/electrum/contrib/osx/build-venv/lib/python3.10/site-packages/hid.cpython-310-darwin.so /Users/vagrant/wspace/tmp/try7/hid10.so
```
Re ARCHFLAGS env var, see https://stackoverflow.com/a/5808548
-----
Note: I've found several xcode build settings that looked relevant
but in the end were not useful, e.g. ARCHS, ONLY_ACTIVE_ARCH,
EXCLUDED_ARCHS, VALID_ARCHS.
- see https://developer.apple.com/documentation/technotes/tn3117-resolving-build-errors-for-apple-silicon
- see https://stackoverflow.com/a/64422757
```
602 WARNING: Failed to collect submodules for 'pkg_resources._vendor.pyparsing.diagram' because importing 'pkg_resources._vendor.pyparsing.diagram' raised: ModuleNotFoundError: No module named 'railroad'
libsecp256k1 library failed to load. exceptions: [FileNotFoundError("Could not find module 'C:\\python3\\lib\\site-packages\\electrum\\libsecp256k1-2.dll' (or one of its dependencies). Try using the full path with constructor syntax."), FileNotFoundError("Could not find module 'C:\\python3\\lib\\site-packages\\electrum\\libsecp256k1-1.dll'(or one of its dependencies). Try using the full path with constructor syntax."), FileNotFoundError("Could not find module 'C:\\python3\\lib\\site-packages\\electrum\\libsecp256k1-0.dll' (or one of its dependencies). Try using the full path with constructor syntax."), FileNotFoundError("Could not find module 'libsecp256k1-2.dll' (or one ofits dependencies). Try using the full path with constructor syntax."), FileNotFoundError("Could not find module 'libsecp256k1-1.dll' (or one of its dependencies). Try using the full path with constructor syntax."), FileNotFoundError("Could not find module 'libsecp256k1-0.dll' (or one of its dependencies). Try using the full path with constructor syntax.")]
libsecp256k1 library failed to load. exceptions: [FileNotFoundError("Could not find module 'C:\\python3\\lib\\site-packages\\electrum\\libsecp256k1-2.dll' (or one of its dependencies). Try using the full path with constructor syntax."), FileNotFoundError("Could not find module 'C:\\python3\\lib\\site-packages\\electrum\\libsecp256k1-1.dll'(or one of its dependencies). Try using the full path with constructor syntax."), FileNotFoundError("Could not find module 'C:\\python3\\lib\\site-packages\\electrum\\libsecp256k1-0.dll' (or one of its dependencies). Try using the full path with constructor syntax."), FileNotFoundError("Could not find module 'libsecp256k1-2.dll' (or one ofits dependencies). Try using the full path with constructor syntax."), FileNotFoundError("Could not find module 'libsecp256k1-1.dll' (or one of its dependencies). Try using the full path with constructor syntax."), FileNotFoundError("Could not find module 'libsecp256k1-0.dll' (or one of its dependencies). Try using the full path with constructor syntax.")]
libsecp256k1 library failed to load. exceptions: [FileNotFoundError("Could not find module 'C:\\python3\\lib\\site-packages\\electrum\\libsecp256k1-2.dll' (or one of its dependencies). Try using the full path with constructor syntax."), FileNotFoundError("Could not find module 'C:\\python3\\lib\\site-packages\\electrum\\libsecp256k1-1.dll'(or one of its dependencies). Try using the full path with constructor syntax."), FileNotFoundError("Could not find module 'C:\\python3\\lib\\site-packages\\electrum\\libsecp256k1-0.dll' (or one of its dependencies). Try using the full path with constructor syntax."), FileNotFoundError("Could not find module 'libsecp256k1-2.dll' (or one ofits dependencies). Try using the full path with constructor syntax."), FileNotFoundError("Could not find module 'libsecp256k1-1.dll' (or one of its dependencies). Try using the full path with constructor syntax."), FileNotFoundError("Could not find module 'libsecp256k1-0.dll' (or one of its dependencies). Try using the full path with constructor syntax.")]
5921 WARNING: collect_data_files - skipping data collection for module 'electrum.plugins' as it is not a package.
```
note: python 3.9.x is now in source-only mode, so could not update to latest...
it is time to investigate upgrading to python 3.10 in the win and mac binaries
note: the extra copies in make_osx.sh are needed because of the CI caching
(pyinstaller needs to see the .dylib's inside electrum/, e.g. when importing electrum during Analysis)
