another GCC bug

[Mike Jakubik]

This warning occurs when compiling php4-mbstrings.

---
cc -DHAVE_CONFIG_H -I.
-I/usr/ports/converters/php4-mbstring/work/php-4.3.8/ext/mbstring
-DPHP_ATOM_INC
-I/usr/ports/converters/php4-mbstring/work/php-4.3.8/ext/mbstring/include
-I/usr/ports/converters/php4-mbstring/work/php-4.3.8/ext/mbstring/main
-I/usr/ports/converters/php4-mbstring/work/php-4.3.8/ext/mbstring
-I/usr/local/include/php -I/usr/local/include/php/main
-I/usr/local/include/php/Zend -I/usr/local/include/php/TSRM
-I/usr/ports/converters/php4-mbstring/work/php-4.3.8/ext/mbstring/mbregex
-I/usr/ports/converters/php4-mbstring/work/php-4.3.8/ext/mbstring/libmbfl
-I/usr/ports/converters/php4-mbstring/work/php-4.3.8/ext/mbstring/libmbfl/mbfl
-DHAVE_CONFIG_H -O2 -pipe -march=pentium3 -prefer-pic -c
/usr/ports/converters/php4-mbstring/work/php-4.3.8/ext/mbstring/mbregex/mbregex.c
 -fPIC -DPIC -o mbregex/.libs/mbregex.lo
cc: unrecognized option `-prefer-pic'
---

Thanks.