LibPNG works fine but LibGD fails to use it.

L.S. I am re-installing a combalt raq4 with php4.0.6/gd1.8 with png and jpeg support. libpng and libjpg are compiled succesfully but libgd refuses to use them. When i try to configure libgd i get the following messages: checking whether to include GD support... yes checking whether to enable truetype string function in gd... no checking for the location of libjpeg... no not set. If configure fails try --with-jpeg-dir=<DIR> checking for the location of libpng... yes checking for png_info_init in -lpng... (cached) yes checking for the location of libXpm... no If configure fails try --with-xpm-dir=<DIR> checking for freetype(2)... no If configure fails try --with-freetype-dir=<DIR> checking whether to include include FreeType 1.x support... yes checking whether to include T1lib support... no checking for gdImageString16 in -lgd... (cached) yes checking for gdImagePaletteCopy in -lgd... (cached) yes checking for gdImageCreateFromPng in -lgd... (cached) no checking for gdImageCreateFromGif in -lgd... (cached) no checking for gdImageWBMP in -lgd... (cached) yes checking for gdImageCreateFromJpeg in -lgd... (cached) no checking for gdImageCreateFromXpm in -lgd... (cached) yes checking for gdImageCreateTrueColor in -lgd... (cached) no checking for gdImageSetTile in -lgd... (cached) yes checking for gdImageSetBrush in -lgd... (cached) yes checking for gdImageStringFTEx in -lgd... (cached) no checking for gdImageColorClosestHWB in -lgd... (cached) yes checking for gdImageColorResolve in -lgd... (cached) yes checking for gdImageGifCtx in -lgd... (cached) no Any suggestions? Rein