GD not loading

Im trying to load GDlib in PHP, but its not working. Everything seems to be OK, but when i try to execute some GD function, i get error. What is happening ? Ideas ? I recompiled PHP with: ./configure --with-mysql --with-apxs --enable-dbase --with-gd --with-gd-lib=/usr/local/lib --with-jpeg-dir=/usr/src/jpeg-6b --with-png-dir=/usr/src/libpng-1.2.5 --with-zlib --with-zlib-dir=/usr/src/zlib-1.1.4 The versions are: php-4.2.3, gd-2.0.8 (with the patch), jpeg-6b, libpng-1.2.5, and zlib-1.1.4 Configure gets: checking for GD support... yes checking whether to enable truetype string function in GD... no checking for the location of libjpeg... yes checking for jpeg_read_header in -ljpeg... (cached) yes checking for the location of libpng... yes checking for png_write_image 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 for FreeType 1.x support... no checking for T1lib support... no checking for gdImageString16 in -lgd... (cached) yes checking for gdImagePaletteCopy in -lgd... (cached) yes checking for gdImageCreateFromPng in -lgd... (cached) yes checking for gdImageCreateFromGif in -lgd... (cached) no checking for gdImageGif in -lgd... (cached) no checking for gdImageWBMP in -lgd... (cached) yes checking for gdImageCreateFromJpeg in -lgd... (cached) yes checking for gdImageCreateFromXpm in -lgd... (cached) yes checking for gdImageCreateFromGd2 in -lgd... (cached) yes checking for gdImageCreateTrueColor in -lgd... (cached) no And i receive no errors compiling or installing. Please, i'm lost. Thanks, Anibal