Hey guys!  Quick question.

Currently, I have POV-Ray 3.6 installed and working.  I am trying to get POV-Ray
3.7 working (mainly for the multithreading).  ./configure works fine (exits with
no errors).  However, make throws several errors, the most severe of which is:

..../source/base/libbase.a(png.o): In function `ReadPNGUpdateInfo':
png.cpp:(.text+0x36b): undefined reference to `png_set_longjmp_fn'
..../source/base/libbase.a(png.o): In function `ReadPNGImage':
png.cpp:(.text+0x3bb): undefined reference to `png_set_longjmp_fn'
..../source/base/libbase.a(png.o): In function
`pov_base::Png::Write(pov_base::OStream*, pov_base::Image const*,
pov_base::Image::WriteOptions const&)':
png.cpp:(.text+0x21a5): undefined reference to `png_set_longjmp_fn'
png.cpp:(.text+0x2c5b): undefined reference to `png_set_longjmp_fn'
collect2: error: ld returned 1 exit status
make[2]: *** [povray] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2

I googled the error and did not get much to go from.  Has anyone else
encountered this error and if so, how did you fix it?

Thank you very much!

- Chaanakya

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