bug#19831: 25.0.50; Can't build emacs 25.0.5 with libpng16 support (only libpng15)

[Ivan Shmakov]

>>>>> Tory S Anderson <torys.anderson@gmail.com> writes:

[…]

 > And yet, to my frustration, afterwards I STILL received:

 > $ libpng-config --cflags -I/home/torys/anaconda/include/libpng15

 > I can't seem to get around this.  Any suggestions would be
 > appreciated.

        My guess is that the ‘libpng-config’ executable coming first in
        your $PATH is still the one belonging to libpng15, not libpng16.

        What’s the output of $ type libpng-config?  Do that file’s mtime
        and ctime (try $ stat on the file) reflect the date and time the
        new version was installed?

        If it’s indeed the “wrong” libpng-config which gets used, –
        check the value of the $PATH environment variable itself and
        either adjust as needed for the directory with the “right”
        libpng-config to come first there, /or/ somehow prevent the
        “wrong” file from being found (either $ chmod a-x it, or perhaps
        rename it.)

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