x86_64-w64-mingw32-g++ options -static-libgcc -static-libstdc++ seems to broken at gcc 9.3.0

"Michael Ellis" <[email protected]> Fri, 04 Sep 2020 07:57:03 +0000
Newsgroups gmane.comp.gnu.mingw.user
Message-ID <[email protected]>
When using x86_64-w64-mingw32-g++ to build a shared library on OS-X for deployment on Windows, it fails to include libstc++-6.dll, libwinpthread-1.dll and libgcc_s_seh.dll even when the options -static-libgcc -static-libstdc++ are specified 

	Adding these shared libraries into the same folder as the deployed application allows the program to execute as it should.

A full SSCCE example can be seen here: https://gitlab.com/Michael51773/mingwwindowssharedlibbug (https://gitlab.com/Michael51773/mingwwindowssharedlibbug) 

	Using: x86_64-w64-mingw32-gcc/g++9.3.0 (GCC) (download with brew install mingw-w64) 

	Any help with this would be gratefully received. 

	-- Michael Ellis

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