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Compile in universal2 mode for macOS Python >= 3.9.1. #114

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Jun 2, 2022
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Compile in universal2 mode for macOS Python >= 3.9.1. #114

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8 changes: 8 additions & 0 deletions builders/macos-python-builder.psm1
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Expand Up @@ -42,6 +42,14 @@ class macOSPythonBuilder : NixPythonBuilder {
$configureString += " --enable-shared"
$configureString += " --with-lto"

### For Python versions which support it, compile a universal2 (arm64 + x86_64 hybrid) build. The arm64 slice
### will never be used itself by a Github Actions runner but using a universal2 Python is the only way to build
### universal2 C extensions and wheels. This is supported by Python >= 3.10 and was backported to Python >=
### 3.9.1 and >= 3.8.10.
if ($this.Version -ge "3.8.10" -and $this.Version -ne "3.9.0" ) {
$configureString += " --enable-universalsdk --with-universal-archs=universal2"
}

### OS X 10.11, Apple no longer provides header files for the deprecated system version of OpenSSL.
### Solution is to install these libraries from a third-party package manager,
### and then add the appropriate paths for the header and library files to configure command.
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