Compiling PHP 5.3.3 on Solaris 9

I'm trying to compile PHP 5.3.3 from source on Solaris 9.  I just 
compiled & installed PHP 5.3.2 on the same server a couple of months 
ago, but 5.3.3 isn't cooperating.  I use the following configure:

../configure  --prefix=/usr/local/apps/php-5.3.3 \
--with-apxs2=/usr/local/apps/apache-2.2.16/bin/apxs \
--with-mysql=/usr/local/apps/mysql \
--with-oci8-instant-client=/usr/local/apps/oracle/instantclient10_1 \
--with-ldap

which runs without error.

When I try to run make, it goes along for a while, and ends with:

/bin/sh /common/src/languages/PHP/php-5.3.3/libtool --silent 
--preserve-dup-deps --mode=compile gcc 
-I/common/src/languages/PHP/php-5.3.3/ext/pcre/pcrelib -Iext/pcre/ 
-I/common/src/languages/PHP/php-5.3.3/ext/pcre/ -DPHP_ATOM_INC 
-I/common/src/languages/PHP/php-5.3.3/include 
-I/common/src/languages/PHP/php-5.3.3/main 
-I/common/src/languages/PHP/php-5.3.3 
-I/common/src/languages/PHP/php-5.3.3/ext/date/lib 
-I/common/src/languages/PHP/php-5.3.3/ext/ereg/regex 
-I/usr/local/apps/libxml2-2.6.26/include/libxml2 
-I/usr/local/apps/mysql/include/mysql 
-I/common/src/languages/PHP/php-5.3.3/ext/sqlite3/libsqlite 
-I/common/src/languages/PHP/php-5.3.3/TSRM 
-I/common/src/languages/PHP/php-5.3.3/Zend  -D_POSIX_PTHREAD_SEMANTICS 
-I/usr/local/include -g -O2   -c 
/common/src/languages/PHP/php-5.3.3/ext/pcre/pcrelib/pcre_chartables.c 
-o ext/pcre/pcrelib/pcre_chartables.lo
In file included from 
/common/src/languages/PHP/php-5.3.3/ext/pcre/pcrelib/pcre_chartables.c:25:
/common/src/languages/PHP/php-5.3.3/ext/pcre/pcrelib/pcre_internal.h:197:20: 
stdint.h: No such file or directory
make: *** [ext/pcre/pcrelib/pcre_chartables.lo] Error 1


As far as I can tell, stdint.h does not appear to exist in Solaris 9. 
It does exist in Solaris 10.  Since this server isn't slated for upgrade 
to Solaris 10 in the immediate future, I need to figure out why PHP 
5.3.3 all of a sudden needs to have stdint.h available, when 5.3.2 did not.

Anybody have any ideas/suggestions?

Thanks,
Kurt