php make problem

when trying to install php on solaris8/sparc box IM getting the following error MSG bash-2.03# make Making all in Zend make[1]: Entering directory `/down/php-4.2.3/Zend' /bin/sh ../libtool --silent --mode=link gcc -g -O2 -pthreads -DZTS -prefer-pic -o libZend.la zend_language_parser.lo zend_language_scanner.lo zend_ini_parser.lo zend_ini_scanner.lo zend_alloc.lo zend_compile.lo zend_constants.lo zend_dynamic_array.lo zend_execute.lo zend_execute_API.lo zend_highlight.lo zend_llist.lo zend_opcode.lo zend_operators.lo zend_ptr_stack.lo zend_stack.lo zend_variables.lo zend.lo zend_API.lo zend_extensions.lo zend_hash.lo zend_list.lo zend_indent.lo zend_builtin_functions.lo zend_sprintf.lo zend_ini.lo zend_qsort.lo -ldl ../libtool: ar: not found make[1]: *** [libZend.la] Error 1 make[1]: Leaving directory `/down/php-4.2.3/Zend' make: *** [all-recursive] Error 1 bash-2.03# can someone tell me what is ar and how can i add it my PATH Thanks, Einav