diff options
Diffstat (limited to 'SConstruct')
| -rw-r--r-- | SConstruct | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/SConstruct b/SConstruct index 5d89b26489a..c7282477a43 100644 --- a/SConstruct +++ b/SConstruct @@ -1755,10 +1755,42 @@ def doConfigure(myenv): context.Result(ret) return ret + # not all C++11-enabled gcc versions have type properties + def CheckCXX11IsTriviallyCopyable(context): + test_body = """ + #include <type_traits> + int main(int argc, char **argv) { + class Trivial { + int trivial1; + double trivial2; + struct { + float trivial3; + short trivial4; + } trivial_member; + }; + + class NotTrivial { + int x, y; + NotTrivial(const NotTrivial& o) : x(o.y), y(o.x) {} + }; + + static_assert(std::is_trivially_copyable<Trivial>::value, + "I should be trivially copyable"); + static_assert(!std::is_trivially_copyable<NotTrivial>::value, + "I should not be trivially copyable"); + return 0; + } + """ + context.Message('Checking for C++11 is_trivially_copyable support... ') + ret = context.TryCompile(textwrap.dedent(test_body), '.cpp') + context.Result(ret) + return ret + conf = Configure(myenv, help=False, custom_tests = { 'CheckCXX11Atomics': CheckCXX11Atomics, 'CheckGCCAtomicBuiltins': CheckGCCAtomicBuiltins, 'CheckGCCSyncBuiltins': CheckGCCSyncBuiltins, + 'CheckCXX11IsTriviallyCopyable': CheckCXX11IsTriviallyCopyable, }) # Figure out what atomics mode to use by way of the tests defined above. @@ -1788,6 +1820,10 @@ def doConfigure(myenv): else: if conf.CheckGCCSyncBuiltins(): conf.env.Append(CPPDEFINES=["MONGO_HAVE_GCC_SYNC_BUILTINS"]) + + if (cxx11_mode == "on") and conf.CheckCXX11IsTriviallyCopyable(): + conf.env.Append(CPPDEFINES=['MONGO_HAVE_STD_IS_TRIVIALLY_COPYABLE']) + myenv = conf.Finish() conf = Configure(myenv) |