Python 2.7 is no longer the default variant with boost, and your log shows you are still using this.
> sudo port sync > sudo port -f uninstall boost > sudo ports install boost As others have said, the best way to avoid issues like this is to not leave things too long between port updates. > On 23 Apr 2021, at 3:48 pm, tom eee <eeeto...@gmail.com> wrote: > > I got the following error message while doing sudo port upgrade outdated: > > Error: Failed to configure boost: configure failure: command execution failed > > OS X 10.7.5 > Mac Mini mid-2011 > > main.log is attached. > > Thank you, > Tom > > <main.log>
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