Compile fails dns.c Fails on Mac OS X 10.6 (Snow Leopard)

I'm having some trouble recompiling PHP 5.3.2 on my fresh install of Mac OS X 10.6 (Snow Leopard).

Here's the partial error when running make.
/Users/keith/php/php-5.3.2/ext/standard/dns.c:305: error: expected specifier-qualifier-list before ‘HEADER’
/Users/keith/php/php-5.3.2/ext/standard/dns.c: In function ‘zif_dns_check_record’:
/Users/keith/php/php-5.3.2/ext/standard/dns.c:340: error: ‘T_MX’ undeclared (first use in this function)
/Users/keith/php/php-5.3.2/ext/standard/dns.c:340: error: (Each undeclared identifier is reported only once
/Users/keith/php/php-5.3.2/ext/standard/dns.c:340: error: for each function it appears in.)
/Users/keith/php/php-5.3.2/ext/standard/dns.c:360: error: ‘T_A’ undeclared (first use in this function)
/Users/keith/php/php-5.3.2/ext/standard/dns.c:393: error: ‘C_IN’ undeclared (first use in this function)
/Users/keith/php/php-5.3.2/ext/standard/dns.c: In function ‘php_parserr’:

But issue I think occurs when running ./configure. 

Here's my configure script.
MACOSX_DEPLOYMENT_TARGET=10.6.3
CFLAGS="-arch x86_64 -g -Os -pipe -no-cpp-precomp"
CCFLAGS="-arch x86_64 -g -Os -pipe"
CXXFLAGS="-arch x86_64 -g -Os -pipe"
LDFLAGS="-arch x86_64 -bind_at_load -L/usr/local/lib/ -liconv"
export CFLAGS CXXFLAGS LDFLAGS CCFLAGS MACOSX_DEPLOYMENT_TARGET
cd php-5.3.2
./configure \
--prefix=/usr \
--mandir=/usr/share/man \
--infodir=/usr/share/info \
--sysconfdir=/private/etc \
--with-apxs2=/usr/sbin/apxs \
--enable-cli \
--with-config-file-path=/etc \
--with-libxml-dir=/usr \
--with-openssl=shared \
--with-kerberos=/usr \
--with-zlib=/usr \
--enable-bcmath \
--with-bz2=/usr \
--enable-calendar \
--with-curl=/usr \
--enable-exif \
--enable-ftp \
--with-gd \
--enable-gd-native-ttf \
--enable-mbstring \
--enable-mbregex \
--with-mysql=mysqlnd \
--with-mysqli=mysqlnd \
--with-pdo-mysql=mysqlnd \
--with-mysql-sock=/var/mysql/mysql.sock \
--with-iodbc=/usr \
--enable-shmop \
--with-snmp=/usr \
--enable-soap \
--enable-sockets \
--enable-sysvmsg \
--enable-sysvsem \
--enable-sysvshm \
--with-xmlrpc \
--with-iconv-dir= /usr \
--with-xsl=/usr \
--enable-zend-multibyte \
--enable-zip \
--with-pcre-regex \
--with-pdo-pgsql=/Library/PostgreSQL/8.4 \
--with-png-dir=/usr/local/lib \
--with-jpeg-dir=/usr/local/lib

I'm seeing this error when running compile.
checking build system type... Invalid configuration `/usr': machine `/usr' not recognized

Any thoughts? It appears that either my ./configure command is incorrect or I'm missing a library or something. I haven't installed fink or ports.