Hi! I followed the same procedure but I am still seeing the same error message after running nmake test.

LINK : fatal error LNK1104: cannot open file 'libmylib.lib'
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This is my Makefile.PL

use ExtUtils::MakeMaker;
$Verbose = 1;
WriteMakefile(
    NAME     => 'Mytest2::mylib',
    SKIP     => [qw(all static static_lib dynamic dynamic_lib)],
    clean    => {'FILES' => 'libmylib$(LIBEEXT)'},
    MYEXTLIB => 'mylib/libmylib$(LIB_EXT)',
);

sub MY::top_targets {
        '
all :: static

pure_all ::    static

static ::    libmylib$(LIB_EXT)

libmylib$(LIB_EXT): $(O_FILES)
        $(AR) libmylib$(LIB_EXT) $(O_FILES)
        $(RANLIB) libmylib$(LIB_EXT)

';
}
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What is wrong here? Thanks.