This is the current git on OpenBSD current/amd64. That's a system with clang 5.0.0 as the system compiler. In fact, 'c++' is 'clang++':
$ ls -li /usr/bin/c++ /usr/bin/clang++
32869 -r-xr-xr-x 6 root bin 42331608 Dec 18 18:55 /usr/bin/c++
32869 -r-xr-xr-x 6 root bin 42331608 Dec 18 18:55 /usr/bin/clang++
It also has the old GCC 4.2.1 (which used to be the system compiler)
installed as gcc and g++. It seems that ./configure prefers the name g++
before c++, and gcc before cc (which might be yet another of its gnuisms).
That's why ./configure fails here with
checking whether g++ supports C++11 features with -h std=c++11... no
configure: error: *** A compiler with support for C++11 language features is required.
but ./configure CC=cc CXX=c++ succeeds.
I find it strange that I have to explicitly specify CC=cc and CXX=c++.
Shouldn't that be the default, as opposed to gcc and g++?
