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Python Apple Silicon

  Sep. 21, 2023   249 words   2 minutes 

Install x86 dependencies

Once you have the shell shortcuts, we can brew install x86 or arm libraries, since they reside in different locations

Switch to the intel shell and brew86 install the required libraries

libs="openssl readline sqlite3 xz zlib gettext"

for lib in ${=libs}; do
brew86 install $lib
done

Next, set the compiler and linker flags realine is keg only brew86 info readline

For compilers to find readline you may need to set: export LDFLAGS="-L/usr/local/opt/readline/lib" export CPPFLAGS="-I/usr/local/opt/readline/include"

For pkg-config to find readline you may need to set: export PKG_CONFIG_PATH="/usr/local/opt/readline/lib/pkgconfig"

Here we set all the flags:

libs="openssl readline sqlite3 xz zlib gettext"

for lib in ${=libs}; do
    prefix="$(brew86 --prefix $lib)"
    export CFLAGS="$CFLAGS -I$prefix/include"
    export LDFLAGS="$LDFLAGS -L$prefix/lib"
done

Alternately, you can just use (and not install the x86 packages above): export PYTHON_BUILD_SKIP_HOMEBREW="1"

ajay@Ajays-MacBook-Pro ~ % intel
ajay@Ajays-MacBook-Pro ~ % /usr/bin/uname -m
x86_64
ajay@Ajays-MacBook-Pro ~ % export PYTHON_BUILD_SKIP_HOMEBREW="1"
ajay@Ajays-MacBook-Pro ~ % pyenv86 install 3.11.4
Downloading openssl-1.1.1s.tar.gz...
-> https://www.openssl.org/source/openssl-1.1.1s.tar.gz
Installing openssl-1.1.1s...
Installed openssl-1.1.1s to /Users/ajay/.pyenv/versions/3.11.4
Downloading readline-8.2.tar.gz...
-> https://ftpmirror.gnu.org/readline/readline-8.2.tar.gz
Installing readline-8.2...
Installed readline-8.2 to /Users/ajay/.pyenv/versions/3.11.4
Downloading Python-3.11.4.tar.xz...
-> https://www.python.org/ftp/python/3.11.4/Python-3.11.4.tar.xz
Installing Python-3.11.4...
python-build: use zlib from xcode sdk
Installed Python-3.11.4 to /Users/ajay/.pyenv/versions/3.11.4
ajay@Ajays-MacBook-Pro ~ % pyenv shell 3.11.4
ajay@Ajays-MacBook-Pro ~ % python
Python 3.11.4 (main, Sep 21 2023, 12:25:56) [Clang 15.0.0 (clang-1500.0.40.1)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import platform
>>> platform.machine()
'x86_64'
>>> platform.platform()
'macOS-13.5.2-x86_64-i386-64bit'
>>>

of course I have a regular arm python environment, built for Maximum Performance env PYTHON_CONFIGURE_OPTS='--enable-optimizations --with-lto' PYTHON_CFLAGS='-march=native -mtune=native' pyenv install 3.11.5

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