diff options
Diffstat (limited to 'libbuild2/cxx/init.cxx')
| -rw-r--r-- | libbuild2/cxx/init.cxx | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/libbuild2/cxx/init.cxx b/libbuild2/cxx/init.cxx index ad0dd05..e2d7343 100644 --- a/libbuild2/cxx/init.cxx +++ b/libbuild2/cxx/init.cxx @@ -189,6 +189,17 @@ namespace build2 if (!o.empty ()) prepend (move (o)); + // Since VC 15.7 we can get a (more) accurate __cplusplus value if + // we ask for it with /Zc:__cplusplus: + // + // https://devblogs.microsoft.com/cppblog/msvc-now-correctly-reports-__cplusplus/ + // + if (mj > 19 || (mj == 19 && mi >= 14)) + { + if (!find_option_prefix ("/Zc:__cplusplus", mode)) + prepend ("/Zc:__cplusplus"); + } + break; } case compiler_class::gcc: |