Sudarsana Babu Nagineni 15a1c7b71f Fix compilation errors with libc++ on QNX 7 ...

This patch fixes the compilation errors on QNX 7:
1) QNX 7 compiler (i.e qcc based GCC 5.4.0 with libc++ from LLVM) has a
limited c++11 feature support and causing the compilation
errors with the inheriting constructors. This fixes the issues by
providing the required constructors explicitly.

2) Resolves an ambiguous overload error with optional<T>

2018-07-30 12:38:24 +03:00

..

mbgl

Fix compilation errors with libc++ on QNX 7

2018-07-30 12:38:24 +03:00