id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
13166	gcc static linking with LTO flag with boost filesystem fails	mettbest@…	Beman Dawes	"boost version 1.64 \\
gcc version 6.4.1 \\
Linux OpenSuse x64 42.2 \\
Cmake 3.5.2 \\
\\
**[linking, no LTO] works:** \\
-std=gnu++11 -O2  -fopenmp -static /opt/lib64/libboost_filesystem.a /opt/lib64/libboost_system.a \\

**[linking, with LTO] does not work:** \\
-std=gnu++11 -O2  -fopenmp -flto=8 -static /opt/lib64/libboost_filesystem.a /opt/lib64/libboost_system.a

**error:**

{{{
/opt/lib64/libboost_filesystem.a(operations.o): In function `boost::filesystem::detail::is_empty(boost::filesystem::path const&, boost::system::error_code*)':
operations.cpp:(.text+0x536a): undefined reference to `vtable for boost::detail::sp_counted_impl_p<boost::filesystem::detail::dir_itr_imp>'
/opt/lib64/libboost_filesystem.a(operations.o): In function `(anonymous namespace)::remove_all_aux(boost::filesystem::path const&, boost::filesystem::file_type, boost::system::error_code*)':
operations.cpp:(.text+0x699d): undefined reference to `vtable for boost::detail::sp_counted_impl_p<boost::filesystem::detail::dir_itr_imp>'
operations.cpp:(.text+0x6add): undefined reference to `vtable for boost::detail::sp_counted_impl_p<boost::filesystem::detail::dir_itr_imp>'
collect2: error: ld returned 1 exit status
CMakeFiles/zebr.dir/build.make:137: recipe for target 'zebr' failed
}}}
"	Bugs	new	To Be Determined	filesystem	Boost 1.64.0	Problem		lto gcc linking	mika.fischer@…