id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
12882	Boost.Log fails to build on Solaris 11.3 x86 using Developer Studio 12.5	lcarreon@…	akrzemi1	"I'm build Boost 1.63.0 on Solaris 11.3 x86 using Developer Studio 12.5.

I use the following command to do the build:

./b2 link=shared runtime-link=shared address-model=64 threading=multi variant=release cxxflags=""-std=c++14"" linkflags=""-std=c++14""

The above build fails in Boost.Log with the error message:

""libs/log/src/named_scope.cpp"", line 118: Error: Overloading ambiguity between ""boost::optional<boost::log::v2_mt_posix::attributes::named_scope_list>::operator=<boost::log::v2_mt_posix::attributes::named_scope_list&>(boost::log::v2_mt_posix::attributes::named_scope_list&)"" and ""boost::optional<boost::log::v2_mt_posix::attributes::named_scope_list>::operator=<boost::log::v2_mt_posix::attributes::named_scope_list&>(boost::log::v2_mt_posix::attributes::named_scope_list&)"".

I have looked at the file where the error is occurring but due to my unfamiliarity with this area of Boost, I couldn't figure out what the problem is.
However, it is possible that the problem could have something to do with Boost.Optional.

Can you let me know what I can do in order for the Boost build to successfully generate the Boost.Log library files.

"	Bugs	new	To Be Determined	optional	Boost 1.63.0	Showstopper			Andrey.Semashev@…