Does MikTeX support texfonts.map for .tfm mapping?

Hello,

I am writing a LaTeX package to setup fonts on the fly. It uses
texfonts.map to let different fonts share the same metric file. Then
\pdfmapline makes the font works.

This faculty works well on TeX Live, but on MiKTeX it fails. PDFTeX or
maketfm does not read the mapping at all.

What should I do? Is it impossible to use it on miktex then? Or there may
be an alternative method?

Many thanks.

Leo
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