[Mingw-users] MinGW FAQ question

[cxf <che...@is...>]

hello,everyone:
    in the minGW website:www.mingw.org,I follow the FAQ "How can an MSVC 
program call a MinGW DLL, and vice versa?",but the command seems wrong,
the command is

gcc -shared -o testdll.dll testdll.c \
    -Wl,--output-def,testdll.def,--out-implib,libtestdll.a

It did not generate the testdll.def and libtestdll.a.