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.
This commit is contained in:
Lioncash 2019-05-07 14:06:20 -04:00
parent 6ca7241bd9
commit 70c6506a7e

View file

@ -21,14 +21,15 @@ if (MSVC)
# Ensure that projects build with Unicode support. # Ensure that projects build with Unicode support.
add_definitions(-DUNICODE -D_UNICODE) add_definitions(-DUNICODE -D_UNICODE)
# /W3 - Level 3 warnings # /W3 - Level 3 warnings
# /MP - Multi-threaded compilation # /MP - Multi-threaded compilation
# /Zi - Output debugging information # /Zi - Output debugging information
# /Zo - Enhanced debug info for optimized builds # /Zo - Enhanced debug info for optimized builds
# /permissive- - Enables stricter C++ standards conformance checks # /permissive- - Enables stricter C++ standards conformance checks
# /EHsc - C++-only exception handling semantics # /EHsc - C++-only exception handling semantics
# /Zc:inline - Let codegen omit inline functions in object files # /Zc:externConstexpr - Allow extern constexpr variables to have external linkage, like the standard mandates
# /Zc:throwingNew - Let codegen assume `operator new` (without std::nothrow) will never return null # /Zc:inline - Let codegen omit inline functions in object files
# /Zc:throwingNew - Let codegen assume `operator new` (without std::nothrow) will never return null
add_compile_options( add_compile_options(
/W3 /W3
/MP /MP
@ -37,6 +38,7 @@ if (MSVC)
/permissive- /permissive-
/EHsc /EHsc
/std:c++latest /std:c++latest
/Zc:externConstexpr
/Zc:inline /Zc:inline
/Zc:throwingNew /Zc:throwingNew
) )