C++ compiler is not installed which we try to compile them. So
reduce mingw32-filesystem min version to 40.
BuildArch: noarch
-BuildRequires: mingw32-filesystem >= 43-6
+BuildRequires: mingw32-filesystem >= 40
BuildRequires: mingw32-gcc
BuildRequires: mingw32-binutils
BuildRequires: mingw32-dlfcn
BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
BuildArch: noarch
-BuildRequires: mingw32-filesystem >= 41
+BuildRequires: mingw32-filesystem >= 40
BuildRequires: mingw32-gcc
BuildRequires: mingw32-gcc-c++
BuildRequires: mingw32-binutils
BuildArch: noarch
-BuildRequires: mingw32-filesystem >= 43
+BuildRequires: mingw32-filesystem >= 40
BuildRequires: mingw32-gcc
BuildRequires: mingw32-gcc-c++
BuildRequires: mingw32-binutils
BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
BuildArch: noarch
-BuildRequires: mingw32-filesystem >= 41
+BuildRequires: mingw32-filesystem >= 40
BuildRequires: mingw32-gcc
BuildRequires: mingw32-binutils