configure --with-gd libraries in wrong order

Forgive me if there's some standard fix for this I'm unaware of. I'm trying to get PHP4 to enable imagepng, but the test is failing. GD itself is detected, and all the GD functions are available except imagepng and imagecreatefrompng. The line that compiles the test program is: gcc -o conftest -g -O2 conftest.c -lgd -lgd -lm -lz -lpng This fails because with lots of messages like pngrutil.o(.text+0x1be2): undefined reference to `inflate' So, I finally came to the conclusing that the libraries are out of order. If I change the line to gcc -o conftest -g -O2 conftest.c -lm -lgd -lpng -lz it compiles. Of course, libpng needs libz. Is the configure script not detecting that my lame slackware install needs the libraries in a different order? Thanks, Leon --- Leon Atkinson, Chief Technologist, Clear Ink Corporation