error compiling php 4.1.1

Hello, Now I can't compile php 4.1.1 under Solaris 8 (gcc 2.95.3). make crashes with the following message : gmake[3]: Entering directory `/local/src/php-4.1.1/ext/standard' /bin/sh /local/src/php-4.1.1/libtool --silent --mode=compile gcc -I. -I/local/src/php-4.1.1/ext/standard -I/local/src/php-4.1.1/main -I/local/src/php-4.1.1 -I/usr/local/apache/include -I/local/src/php-4.1.1/Zend -I/usr/local/ssl/include -I/usr/local/include -I/usr/local/mysql/include -I/local/src/php-4.1.1/ext/xml/expat -D_POSIX_PTHREAD_SEMANTICS -DSOLARIS2=280 -DMOD_SSL=208106 -DMOD_PERL -DUSE_PERL_SSI -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -DEAPI -DEAPI_MM -DUSE_EXPAT -I/local/src/php-4.1.1/TSRM -g -O2 -prefer-pic -c mail.c mail.c: In function `php_mail': mail.c:191: `EX_OK' undeclared (first use in this function) mail.c:191: (Each undeclared identifier is reported only once mail.c:191: for each function it appears in.) gmake[3]: *** [mail.lo] Error 1 gmake[3]: Leaving directory `/local/src/php-4.1.1/ext/standard' gmake[2]: *** [all-recursive] Error 1 gmake[2]: Leaving directory `/local/src/php-4.1.1/ext/standard' gmake[1]: *** [all-recursive] Error 1 gmake[1]: Leaving directory `/local/src/php-4.1.1/ext' gmake: *** [all-recursive] Error 1 Here is the configure I used : ./configure --with-apxs=/usr/local/apache/bin/apxs --with-mysql=/usr/local/mysql --enable-track-vars --with-openssl=/usr/local/ssl --with-imap-ssl=../imap-2001a --with-gd --with-ldap=/usr/local --enable-ftp --enable-sysvsem --enable-sysvshm --enable-sockets --with-pdflib=/usr/local/lib --with-gettext --with-mm=../mm-1.1.3 --with-jpeg-dir=/usr/local/lib --with-zlib-dir=/usr/local/lib No error message in the log file. -- -- Gerard Gachelin Universite de la Reunion 15, Avenue Rene Cassin - BP 7151 97715 Saint-Denis MESSAG-CEDEX 9 Tel: 0262 93 82 72 Fax: 0262 93 82 60 Email : Gerard.Gachelin@univ-reunion.fr