diff options
| author | Boris Kolpackov <boris@codesynthesis.com> | 2021-10-14 13:24:59 +0200 |
|---|---|---|
| committer | Boris Kolpackov <boris@codesynthesis.com> | 2021-10-14 13:27:57 +0200 |
| commit | c050db1d2f88196002ecb882c8a9f1d7eeb4848e (patch) | |
| tree | 438a2836469bb4d094ce8ae0fe2312a50ed160d5 /libbuild2/cxx | |
| parent | d267e350e3fb8571805f6d8eba9c0d7f41bf75c2 (diff) | |
Map latest to -std=c++2b from Clang 13, /std:c++20 from MSVC 16.11
Diffstat (limited to 'libbuild2/cxx')
| -rw-r--r-- | libbuild2/cxx/init.cxx | 33 |
1 files changed, 16 insertions, 17 deletions
diff --git a/libbuild2/cxx/init.cxx b/libbuild2/cxx/init.cxx index a2c9f25..cd5169d 100644 --- a/libbuild2/cxx/init.cxx +++ b/libbuild2/cxx/init.cxx @@ -164,10 +164,12 @@ namespace build2 // C++ standard-wise, with VC you got what you got up until 14.2. // Starting with 14.3 there is now the /std: switch which defaults // to c++14 but can be set to c++latest. And from 15.3 it can be - // c++17. And from 16.?? it can be c++20. + // c++17. And from 16.11 it can be c++20 (we start with the compiler + // version for 16.11.4 since 16.11.0 seems to be indistinguishable + // from 16.10). // - bool v16_10 (false /* mj > 19 || (mj == 19 && mi >= 29) */); - bool v16_0 (v16_10 || mj > 19 || (mj == 19 && mi >= 20)); + bool v16_11 ( mj > 19 || (mj == 19 && (mi > 29 || (mi == 29 && p >= 30136)))); + bool v16_0 (v16_11 || (mj == 19 && mi >= 20)); bool v15_3 (v16_0 || (mj == 19 && mi >= 11)); bool v14_3 (v15_3 || (mj == 19 && (mi > 0 || (mi == 0 && p >= 24215)))); @@ -192,7 +194,7 @@ namespace build2 // for this mode. So starting from 16 we only enable it in // `experimental`. // - if (v16_10) + if (v16_11) o = "/std:c++20"; else if (v16_0) o = "/std:c++17"; @@ -220,12 +222,10 @@ namespace build2 sup = (mj > 19 || (mj == 19 && (mi > 0 || (mi == 0 && p >= 23918)))); } - /* - else if (*v == "20") // C++20 since VS2019/16.??. + else if (*v == "20") // C++20 since VS2019/16.11. { - sup = (mj > 19 || (mj == 19 && mi >= 29)); + sup = v16_11; } - */ if (!sup) fail << "C++" << *v << " is not supported by " << ci.signature << @@ -289,15 +289,14 @@ namespace build2 // and later are used with a sufficiently new version of // MSVC. // - if (mj == 10 && latest && tt.system == "win32-msvc") - { - o = "-std=c++17"; - } - //else if (mj >= 13) o = "-std=c++2b"; - else if (mj >= 5) o = "-std=c++2a"; - else if (mj > 3 || (mj == 3 && mi >= 5)) o = "-std=c++1z"; - else if (mj == 3 && mi >= 4) o = "-std=c++1y"; - else /* ??? */ o = "-std=c++0x"; + + if (mj >= 13) o = "-std=c++2b"; + else if (mj == 10 && + latest && tt.system == "win32-msvc") o = "-std=c++17"; + else if (mj >= 5) o = "-std=c++2a"; + else if (mj > 3 || (mj == 3 && mi >= 5)) o = "-std=c++1z"; + else if (mj == 3 && mi >= 4) o = "-std=c++1y"; + else /* ??? */ o = "-std=c++0x"; break; } |