[Proj] PROJ 5.2.0

[Roger Oberholtzer]

I just tried building this on Linux with g++, and I dot this:

>[   37s] checking whether g++ supports C++11 features with -h std=c++11... no
>[   37s] configure: error: *** A compiler with support for C++11

Shouldn't the test

     -h std=c++1

be

     -std=c++11





--
Roger Oberholtzer