Description:
------------
php fails to compile, due to errors on ext/snmp. cant tell for sure what it is, but one thing that was done is previously sessions were disabled, now sessions are enabled on this compile. not sure if relevant, maybe new net-snmp version also. this looks similar to bug 25200, but not sure if its the same.

Reproduce code:
---------------
use net-snmp v5.2, with php 5.0.2

emerge net-snmp

then

emerge php

OR

emerge mod_php

Expected result:
----------------
successful compile.

Actual result:
--------------
gcc -Iext/snmp/ -I/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/ext/snmp/ -DPHP_ATOM_INC -I/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/include -I/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/main -I/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2 -I/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/Zend -I/usr/include/libxml2 -I/usr/include/freetype2 -I/usr/include/imap -I/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/ext/mbstring/oniguruma -I/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/ext/mbstring/libmbfl -I/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/ext/mbstring/libmbfl/mbfl -I/usr/include/mysql -I/usr/include/postgresql/pgsql -I/usr/include/pspell -I/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/TSRM -O2 -march=pentium3 -fomit-frame-pointer -fforce-addr -g -Wall -c /var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/ext/snmp/snmp.c  -fPIC -DPIC -o ext/snmp/snmp.lo
/bin/sh /var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/libtool --preserve-dup-deps --mode=compile gcc  -Iext/sockets/ -I/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/ext/sockets/ -DPHP_ATOM_INC -I/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/include -I/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/main -I/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2 -I/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/Zend -I/usr/include/libxml2 -I/usr/include/freetype2 -I/usr/include/imap -I/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/ext/mbstring/oniguruma -I/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/ext/mbstring/libmbfl -I/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/ext/mbstring/libmbfl/mbfl -I/usr/include/mysql -I/usr/include/postgresql/pgsql -I/usr/include/pspell  -I/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/TSRM  -O2 -march=pentium3 -fomit-frame-pointer -fforce-addr -g -Wall  -prefer-pic -c /var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/ext/sockets/sockets.c -o ext/sockets/sockets.lo
/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/ext/snmp/snmp.c: In function `netsnmp_session_set_sec_protocol':
/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/ext/snmp/snmp.c:795: error: `usmAES192PrivProtocol' undeclared (first use in this function)
/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/ext/snmp/snmp.c:795: error: (Each undeclared identifier is reported only once
/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/ext/snmp/snmp.c:795: error: for each function it appears in.)
/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/ext/snmp/snmp.c:799: error: `usmAES256PrivProtocol' undeclared (first use in this function)
/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/ext/snmp/snmp.c: In function `netsnmp_session_gen_auth_key':
/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/ext/snmp/snmp.c:822: warning: initialization discards qualifiers from pointer target type
/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/ext/snmp/snmp.c: In function `netsnmp_session_gen_sec_key':
/var/tmp/portage/mod_php-5.0.2/work/php-5.0.2/ext/snmp/snmp.c:851: warning: initialization discards qualifiers from pointer target type
make: *** [ext/snmp/snmp.lo] Error 1