Building mod_auth_vas-3,5,3.308 on AIX v5.3 fails

I am working to build the mod_auth_vas module with IBM's IHS 2.0.47.0 version of Apache.  I am using IBM's C compiler as this is the default of the IHS version.  The configure succeeds, but the link fails with the following.

Making all in .
make[1]: Entering directory `/home/wpz1599/mod_auth_vas-3.5.3.308'
for f in mod_auth_vas.c compat.h; do \
  cmp ./$f ./$f 2>/dev/null || \
    cp ./$f . ; \
done
/apps/IHS/bin/apxs -c -S CC='/usr/vac/bin/xlc_r' \
        -DHAVE_UNIX_SUEXEC -DMODAUTHVAS_DIAGNOSTIC -DMODAUTHVAS_VERBOSE \
        -DMODAUTHVAS_VERSION='\"3.5.3.308\"' \
        -Wc,-g -Wc,+DAportable \
        -Wc,-I/opt/quest/include \
        -Wl,-bexpall \
        -Wl,-bnolibpath -Wl,-blibpath:/opt/quest/lib:/usr/lib:/lib -Wl,-L/opt/quest/lib -Wl,-lvas -Wl,-L/opt/quest/lib/support -Wl,-lgcc_s \
        -o mod_auth_vas.so \
        -n auth_vas \
        mod_auth_vas.c
/apps/IHS/build/libtool --silent --mode=compile /usr/vac/bin/xlc_r -prefer-pic -O2 -qmaxmem=8192  -U__STR__ -D_THREAD_SAFE -D_USE_IRS -qHALT=E -I/apps/IHS/include  -I/apps/IHS/include   -I/apps/IHS/include  -g +DAportable -I/opt/quest/include -DHAVE_UNIX_SUEXEC -DMODAUTHVAS_DIAGNOSTIC -DMODAUTHVAS_VERBOSE -DMODAUTHVAS_VERSION=\"3.5.3.308\"  -c -o mod_auth_vas.lo mod_auth_vas.c && touch mod_auth_vas.slo
/usr/vac/bin/xlc_r: 1501-228 input file +DAportable not found
"mod_auth_vas.c", line 280.17: 1506-196 (W) Initialization between types "void*" and "unsigned long" is not allowed.
"mod_auth_vas.c", line 284.17: 1506-196 (W) Initialization between types "void*" and "unsigned long" is not allowed.
"mod_auth_vas.c", line 288.17: 1506-196 (W) Initialization between types "void*" and "unsigned long" is not allowed.
"mod_auth_vas.c", line 292.17: 1506-196 (W) Initialization between types "void*" and "unsigned long" is not allowed.
"mod_auth_vas.c", line 296.17: 1506-196 (W) Initialization between types "void*" and "unsigned long" is not allowed.
"mod_auth_vas.c", line 300.17: 1506-196 (W) Initialization between types "void*" and "unsigned long" is not allowed.
"mod_auth_vas.c", line 304.17: 1506-196 (W) Initialization between types "void*" and "unsigned long" is not allowed.
"mod_auth_vas.c", line 308.17: 1506-196 (W) Initialization between types "void*" and "unsigned long" is not allowed.
"mod_auth_vas.c", line 312.17: 1506-196 (W) Initialization between types "void*" and "unsigned long" is not allowed.
"mod_auth_vas.c", line 316.17: 1506-196 (W) Initialization between types "void*" and "unsigned long" is not allowed.
/apps/IHS/build/libtool --silent --mode=link /usr/vac/bin/xlc_r -o mod_auth_vas.so -g +DAportable -I/opt/quest/include -DHAVE_UNIX_SUEXEC -DMODAUTHVAS_DIAGNOSTIC -DMODAUTHVAS_VERBOSE -DMODAUTHVAS_VERSION=\"3.5.3.308\"  -bexpall -bnolibpath -blibpath:/opt/quest/lib:/usr/lib:/lib -L/opt/quest/lib -lvas -L/opt/quest/lib/support -lgcc_s -rpath /apps/IHS/modules -module -avoid-version  -Wl,-brtl  mod_auth_vas.lo
/usr/vac/bin/xlc_r: 1501-228 input file +DAportable not found
ld: 0711-317 ERROR: Undefined symbol: .main
ld: 0711-317 ERROR: Undefined symbol: .ap_log_perror
ld: 0711-317 ERROR: Undefined symbol: .ap_log_assert
ld: 0711-317 ERROR: Undefined symbol: .apr_sockaddr_info_get
ld: 0711-317 ERROR: Undefined symbol: .ap_log_rerror
ld: 0711-317 ERROR: Undefined symbol: .apr_table_do
ld: 0711-317 ERROR: Undefined symbol: .apr_ipsubnet_create
ld: 0711-317 ERROR: Undefined symbol: .apr_ipsubnet_test
ld: 0711-317 ERROR: Undefined symbol: .apr_thread_mutex_unlock
ld: 0711-317 ERROR: Undefined symbol: .apr_thread_mutex_lock
ld: 0711-317 ERROR: Undefined symbol: .apr_uid_get
ld: 0711-317 ERROR: Undefined symbol: .apr_uid_name_get
ld: 0711-317 ERROR: Undefined symbol: ap_set_flag_slot
ld: 0711-317 ERROR: Undefined symbol: ap_set_string_slot
ld: 0711-317 ERROR: Undefined symbol: .apr_pstrdup
ld: 0711-317 ERROR: Undefined symbol: .apr_psprintf
ld: 0711-317 ERROR: Undefined symbol: .ap_hook_post_config
ld: 0711-317 ERROR: Undefined symbol: .ap_hook_child_init
ld: 0711-317 ERROR: Undefined symbol: .ap_hook_auth_checker
ld: 0711-317 ERROR: Undefined symbol: .ap_hook_check_user_id
ld: 0711-317 ERROR: Undefined symbol: .ap_hook_get_suexec_identity
ld: 0711-317 ERROR: Undefined symbol: .ap_hook_fixups
ld: 0711-317 ERROR: Undefined symbol: .apr_thread_mutex_create
ld: 0711-317 ERROR: Undefined symbol: .ap_log_error
ld: 0711-317 ERROR: Undefined symbol: .ap_add_version_component
ld: 0711-317 ERROR: Undefined symbol: .apr_palloc
ld: 0711-317 ERROR: Undefined symbol: apr_pool_cleanup_null
ld: 0711-317 ERROR: Undefined symbol: .apr_pool_cleanup_register
ld: 0711-317 ERROR: Undefined symbol: .apr_table_setn
ld: 0711-317 ERROR: Undefined symbol: .ap_auth_type
ld: 0711-317 ERROR: Undefined symbol: .ap_requires
ld: 0711-317 ERROR: Undefined symbol: .apr_table_get
ld: 0711-317 ERROR: Undefined symbol: .ap_getword_white
ld: 0711-317 ERROR: Undefined symbol: .apr_base64_decode_len
ld: 0711-317 ERROR: Undefined symbol: .apr_base64_decode
ld: 0711-317 ERROR: Undefined symbol: .apr_table_add
ld: 0711-317 ERROR: Undefined symbol: .apr_pstrmemdup
ld: 0711-317 ERROR: Undefined symbol: .ap_custom_response
ld: 0711-317 ERROR: Undefined symbol: .ap_psignature
ld: 0711-317 ERROR: Undefined symbol: .apr_pstrcat
ld: 0711-317 ERROR: Undefined symbol: .apr_table_set
ld: 0711-317 ERROR: Undefined symbol: .ap_getword_conf
ld: 0711-317 ERROR: Undefined symbol: .apr_table_make
ld: 0711-317 ERROR: Undefined symbol: .ap_set_string_slot
ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more information.
apxs:Error: Command failed with rc=524288
.
make[1]: *** [mod_auth_vas.so] Error 1
make[1]: Leaving directory `/home/wpz1599/mod_auth_vas-3.5.3.308'
make: *** [all-recursive] Error 1


I can fix the .apr_ prefixed symbols, but cannot locate the .ap_ prefixed symbols.

Has anyone else encountered this issue?