macosx_deployment_target - building for previous versions from MacOS 10.13

Jeffrey Walton noloader at
Fri Sep 4 11:14:46 UTC 2020

On Fri, Sep 4, 2020 at 6:54 AM Friedrich Beckmann
<friedrich.beckmann at> wrote:
> ...
> I just figured out that ncurses indeed does not build for deployment target 10.5 because macports or whoever sets the CXXFLAGS to

Sorry to hear this. Ncurses is a mess. I cringe when it is needed...
No source code repo, bizarre processes and procedures, memory leaks
out the ass, ...

Are you fetching their patches per

> :debug:configure CXXFLAGS='-pipe -Os -stdlib=libc++ -arch x86_64 -arch i386‘

Be careful of this. It assumes all packages are fat/universal safe.
That is not the case. For example, OpenSSL is not fat safe because of
different configuration files depending on the platform, and the way
it wields the AR command.

You need to do something like
You build the library for each platform, rig up some header files, and
use lipo to combine your output artifacts.


More information about the macports-users mailing list