Compiling PHP4 on Solaris7

Hello, I want to install php4 on Solaris7 (sparc ultra5) with apache 1.3.9 and mysql 3.22.32. The following errors occurred during the execution of the command make : Making all in Zend /bin/sh ../libtool --silent --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I.. -DXML_BYTE_ORDER=21 -g -O2 -Wall -c zend-scanner.c In file included from /usr/local/free/gcc/gcc-2.7.2.1/lib/gcc-lib/sparc-sun-solaris2.4/2.7.2.1/include/time.h:90, from /usr/include/sys/time.h:405, from /usr/include/sys/select.h:17, from /usr/local/free/gcc/gcc-2.7.2.1/lib/gcc-lib/sparc-sun-solaris2.4/2.7.2.1/include/sys/types.h:274, from ../php_config.h:1426, from zend_config.h:1, from zend.h:45, from ./zend-scanner.l:42: /usr/include/sys/siginfo.h:74: parse error before `pthread_attr_t' /usr/include/sys/siginfo.h:74: warning: no semicolon at end of struct or union /usr/include/sys/siginfo.h:76: parse error before `}' zend-scanner.c:5766: warning: `yy_fatal_error' defined but not used zend-scanner.c:5751: warning: `yy_top_state' defined but not used *** Error code 1 make: Fatal error: Command failed for target `zend-scanner.lo' Current working directory /tmp/php-4.0.0/Zend *** Error code 1 make: Fatal error: Command failed for target `all-recursive' Thanks for your help and sorry for my english. Chrystel