Quoting ExtUtils::MakeMaker documentation:

INC
Include file dirs eg: "-I/usr/5include -I/path/to/inc"

Try opening a command prompt inside the unpacked source code directory (cpan> look Imager::File::PNG) and run the installation commands manually, passing INC="-IC:\Progra~1\GnuWin32\include" (I am not sure about how to pass a quoted string inside a quoted string in Windows CMD, so using DOS-style paths) as a command line parameter parameter to perl Makefile.PL.

In reply to Re: Help with Imager::File::PNG by aitap
in thread Help with Imager::File::PNG by Fair Strides

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