Lioncash e860a0ae59 src/CMakeLists: Add /Zc:externConstexpr to the MSVC build flags
The C++ standard allows constexpr variables declared with the extern
keyword to have external linkage. Previously MSVC wasn't abiding by
this. This just makes the compiler more standards compliant during
builds.

Given we currently don't make use of anything that would break by this,
this is safe to enable.
2019-06-24 17:47:59 +02:00
..