Hi, I installed 64 bit MySQL-5.3.1 and i am in the process of installing php-5.2.8. While configuring php with mysql, getting following issues. Issue: ==== 1. I ran php configuration as below. $./configure --with-apxs2=/usr/local/apache2/bin/apxs --with-mysql=/apps/mysql/mysql It went fine. 2. While running make, i got following relink error. ld: fatal: file /usr/local/mysql/lib/libmysqlclient.so: wrong ELF class: ELFCLASS64 ld: fatal: File processing errors. No output written to .libs/libphp5.so collect2: ld returned 1 exit status *** Error code 1 make: Fatal error: Command failed for target `libphp5.la' I tried exporting CFLAGS as export CFLAGS="$CFLAGS -m64" so that gcc will use 64 bit. But i got following error at the time of make. ld: fatal: file ext/libxml/.libs/libxml.o: wrong ELF class: ELFCLASS32 ld: fatal: File processing errors. No output written to .libs/libphp5.so collect2: ld returned 1 exit status *** Error code 1 make: Fatal error: Command failed for target `libphp5.la' I am not able to proceed with the installation of PHP due to above errors. I would appreciate if any one can help me in resolving the issue. Please let me know if you need more details in solving the issue. Regards, Niranjan