Description:
------------
there are many "multiple definition" of xxxx occur when i compile php-5.1.1
most of them related to pdo, 
ext/pdo/.libs/pdo_stmt.o(.data+0x178):/tmp/php-5.1.1/ext/pdo/pdo_stmt.c:214: first defined here

i choose -without-pdo-sqlite and -without-pdo-sqlite2 
since they cause samiliar errors,

--enable-pdo=shared cause error too

Thanks and Regards

Reproduce code:
---------------
./configure --with-apxs \
        --with-curl=/usr/lib/include/curl \
        --with-freetype-dir=/usr/local/lib \
        --with-gd \
        --with-gettext \
        --with-gmp \
        --with-jpeg-dir=/usr/local/lib \
        --with-java=/usr/java \
        --with-kerberos \
        --with-mcrypt \
        --with-mhash \
        --with-mysql=/usr/lib,shared \
        --with-readline=/usr/lib \
        --with-pear \
        --with-regex=php \
        --with-xml \
        --without-pdo-sqlite \
        --without-pdo-sqlite2 \
        --with-zlib \
        --with-zip \
        --with-openssl \

make 

Expected result:
----------------
complete 'make' as normal

Actual result:
--------------
...  -o libphp5.la
Zend/.libs/zend_builtin_functions.o(.data+0x0): In function `zend_startup_builtin_functions':
/usr/local/directadmin/customapache/php-5.1.1/Zend/zend_builtin_functions.c:152: multiple definition of `first_arg_force_ref'
ext/pdo/.libs/pdo_stmt.o(.data+0x0):/usr/local/directadmin/customapache/php-5.1.1/ext/pdo/pdo_stmt.c:79: first defined here
Zend/.libs/zend_builtin_functions.o(.data+0x40): In function `zif_func_num_args':
/usr/local/directadmin/customapache/php-5.1.1/Zend/zend_builtin_functions.c:169: multiple definition of `second_arg_force_ref'
ext/pdo/.libs/pdo_stmt.o(.data+0x40):/usr/local/directadmin/customapache/php-5.1.1/ext/pdo/pdo_stmt.c:135: first defined here
Zend/.libs/zend_builtin_functions.o(.data+0xa0): In function `zif_func_num_args':
/usr/local/directadmin/customapache/php-5.1.1/Zend/zend_builtin_functions.c:177: multiple definition of `third_arg_force_ref'
ext/pdo/.libs/pdo_stmt.o(.data+0xa0):/usr/local/directadmin/customapache/php-5.1.1/ext/pdo/pdo_stmt.c:150: first defined here
Zend/.libs/zend_builtin_functions.o(.data+0x100): In function `zif_func_get_arg':
/usr/local/directadmin/customapache/php-5.1.1/Zend/zend_builtin_functions.c:203: multiple definition of `fourth_arg_force_ref'
ext/pdo/.libs/pdo_stmt.o(.data+0x100):/usr/local/directadmin/customapache/php-5.1.1/ext/pdo/pdo_stmt.c:174: first defined here
Zend/.libs/zend_builtin_functions.o(.data+0x178): In function `zif_func_get_arg':
/usr/local/directadmin/customapache/php-5.1.1/Zend/zend_builtin_functions.c:232: multiple definition of `all_args_by_ref'
ext/pdo/.libs/pdo_stmt.o(.data+0x178):/usr/local/directadmin/customapache/php-5.1.1/ext/pdo/pdo_stmt.c:214: first defined here
collect2: ld returned 1 exit status
make: *** [libphp5.la] Error 1