Errors Compiling PHP 4.3.1 with Apache 2

I have just installed Red hat Linux 9 (Shike). I removed the php and httpd (apache) rpm packages with rpm -e. I have compiled and built Apache httpd version 2.0.45 without problems. I followed the instructions from the php documentation: ..snip.. 10. ./configure --with-apxs2=/usr/local/apache2/bin/apxs 11. make And get this error message (compiling php 4.3.1) : /home/mysql/php-4.3.1/ext/mysql/libmysql/my_lib.c:588: undefined reference to `errno' ext/mysql/libmysql/my_malloc.lo(.text+0xde): In function `my_malloc': /home/mysql/php-4.3.1/ext/mysql/libmysql/my_malloc.c:24: undefined reference to `errno' ext/mysql/libmysql/my_realloc.lo(.text+0xd5): In function `my_realloc': /home/mysql/php-4.3.1/ext/mysql/libmysql/my_realloc.c:44: undefined reference to `errno' ext/mysql/libmysql/my_delete.lo(.text+0x86): In function `my_delete': /home/mysql/php-4.3.1/ext/mysql/libmysql/my_delete.c:16: undefined reference to `errno' ext/mysql/libmysql/my_tempnam.lo(.text+0x89):/home/mysql/php-4.3.1/ext/mysql/libmysql/my_tempnam.c:108: more undefined references to `errno' follow collect2: ld returned 1 exit status make: *** [sapi/cli/php] Error 1 Any ideas? Thanks Jeremy