[libc++] Make variables in templates inline (#115785)

The variables are all `constexpr`, which implies `inline`. Since they
aren't `constexpr` in C++03 they're also not `inline` there. Because of
that we define them out-of-line currently. Instead we can use the C++17
extension of `inline` variables, which results in the same weak
definitions of the variables but without having all the boilerplate.

1 files changed, 6 insertions, 0 deletions

diff --git a/libcxx/src/chrono.cpp b/libcxx/src/chrono.cpp
index f17ea55..098b6a1 100644
--- a/libcxx/src/chrono.cpp
+++ b/libcxx/src/chrono.cpp
@@ -134,7 +134,10 @@ static system_clock::time_point __libcpp_system_clock_now() {
 
 #endif
 
+_LIBCPP_DIAGNOSTIC_PUSH
+_LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated")
 const bool system_clock::is_steady;
+_LIBCPP_DIAGNOSTIC_POP
 
 system_clock::time_point system_clock::now() noexcept { return __libcpp_system_clock_now(); }
 
@@ -226,7 +229,10 @@ static steady_clock::time_point __libcpp_steady_clock_now() {
 #    error "Monotonic clock not implemented on this platform"
 #  endif
 
+_LIBCPP_DIAGNOSTIC_PUSH
+_LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated")
 const bool steady_clock::is_steady;
+_LIBCPP_DIAGNOSTIC_POP
 
 steady_clock::time_point steady_clock::now() noexcept { return __libcpp_steady_clock_now(); }