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. > When I install the port with > > port -v install ncurses configure.cxx_stdlib="libstdc++“ > > then I can install ncurses (MacOS 10.13 with XCode 10.1). > > When I try to compile icu with this setting to go further down then I hit the > c++11 problem that you mention below (not compatible with libstdc++). Correct, the version of icu we use now requires C++11, which the system's libstdc++ does not support. Newer libstdc++ does support C++11.