cannot build with png support in gnuplot 4.1

[Matt F. <tad...@gm...>]

Just grabbed the latest from CVS (10/3) and I cannot build with png support=
.
Configure shows that it should be working:

checking for png_create_write_struct in -lpng... yes
checking png.h usability... yes
checking png.h presence... yes
checking for png.h... yes
...
** Configuration summary for gnuplot 4.1.0:
...
Enable generation of PNG files


However, when I build, I dont get png support

gnuplot> set terminal png
^
unknown or ambiguous terminal type; type just 'set terminal' for a list

Is there an issue with png support in CVS or any other ideas I could try?

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