TK's mxe bundle uses these custom patches on top of gcc 10.3 https://github.com/r-devel/r-dev-web/tree/master/WindowsBuilds/winutf8/ucrt3/toolchain_libs/mxe/plugins/gcc10
TK's mxe bundle uses these custom patches on top of gcc 10.3 https://github.com/r-devel/r-dev-web/tree/master/WindowsBuilds/winutf8/ucrt3/toolchain_libs/mxe/plugins/gcc10