> On 26 Oct 2016, at 18:32, G 3 <programmingk...@gmail.com> wrote: > > -isysroot /Developer/SDKs/MacOSX10.6.sdk
yes, this is a compiler command line option pointing to an existing folder, but `/Developer/` is no longer in use for quite some time, and Apple does not provide any official way to install previous SDK versions. regards, Liviu
