[reportlab-users] Installation issue in Mac OS Big Sur

Robin Becker robin at reportlab.com
Thu Nov 19 07:50:59 EST 2020

Hi Mathieu,

thanks for the report. You can report issues at the users list see


So macintosh is now deprecated. I guess there's an OSX flag or somesuch.

 From the fact that you are building the package yourself I assume that this
pypi package doesn't work for you on you improved OS

which I build with multibuild on travis.

Unfortunately multibuild hasn't advanced beyond 10.9, but perhaps that's an issue with travis as well.
> I found a workaround here:
> https://stackoverflow.com/questions/64871133/reportlab-installation-failed-after-upgrading-to-macos-big-sur
> It seems that `defined(macintosh)` does not evaluate to true on the Big Sur
> operating system.
> I Was able to build from source by modifying this file:
> src/rl_addons/renderPM/gt1/gt1-namecontext.c
Robin Becker

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