macosx_deployment_target - building for previous versions from MacOS 10.13

[Ryan Schmidt]

On Sep 5, 2020, at 02:29, Friedrich Beckmann wrote:

> Am 05.09.2020 um 08:39 schrieb Ryan Schmidt:
> 
>> On Sep 4, 2020, at 05:53, Friedrich Beckmann wrote:
>> 
>>> :info:configure checking if /usr/bin/clang++ works... no
>>> :info:configure configure: WARNING: Ignore /usr/bin/clang++, since it cannot compile hello-world.
>>> :info:configure configure: WARNING: You don't have any C++ compiler, too bad
>>> 
>>> because the 10.5 and libc++ does not fit as you say.
>> 
>> You'd need to examine the config.log to see why it failed.
> 
> It is because clang++ says it cannot compile with deployment target „10.5" and "-stdlib=libc++“. So for the ncurses port it would be possible to change to „-stdlib=libstdc++“ if the deployment target is below 10.7

But you would have to compile everything with libstdc++ in that case. You cannot mix C++ standard libraries.