Hi there, I am in need of assistance. at this point I am pretty sure I am doing something wrong. I am trying to build enough of xpdf for 3ds to be able to perform pdftopng (program in xpdf). it requires libpng but it fails this "checking for png_write_row in -lpng... no" check. everytime no matter what i do. this is a repository with the code i use to fail building. (xpdf has --libdir --includedir --with-freetype2-includes flags with absolute path) https://github.com/Theyrealone/helpxpdflibpng to use (requires libpng,freetype) $ make xpdf Thanks in advance for any help.