Description:
------------
MySQLi build fails with this error:

/bin/sh /Users/arthur/php-src/libtool --silent --preserve-dup-deps --mode=compile gcc  -Imain/ -I/Users/arthur/php-src/main/ -DPHP_ATOM_INC -I/Users/arthur/php-src/include -I/Users/arthur/php-src/main -I/Users/arthur/php-src -I/usr/include/libxml2 -I/Users/arthur/php-src/ext/mbstring/oniguruma -I/Users/arthur/php-src/ext/mbstring/libmbfl -I/Users/arthur/php-src/ext/mbstring/libmbfl/mbfl -I/usr/local/mysql/include -I/Users/arthur/php-src/TSRM -I/Users/arthur/php-src/Zend  -no-cpp-precomp  -g -O2  -c main/internal_functions.c -o main/internal_functions.lo 
gcc -dynamic -twolevel_namespace -bundle -bundle_loader /usr/sbin/httpd -g -O2   -L/usr/local/mysql/lib ext/libxml/libxml.o ext/zlib/zlib.o ext/zlib/zlib_fopen_wrapper.o ext/zlib/zlib_filter.o ext/ctype/ctype.o ext/curl/interface.o ext/curl/multi.o ext/curl/streams.o ext/date/php_date.o ext/date/lib/dow.o ext/date/lib/parse_date.o ext/date/lib/parse_tz.o ext/date/lib/timelib.o ext/date/lib/tm2unixtime.o ext/date/lib/unixtime2tm.o ext/dom/php_dom.o ext/dom/attr.o ext/dom/document.o ext/dom/domerrorhandler.o ext/dom/domstringlist.o ext/dom/domexception.o ext/dom/namelist.o ext/dom/processinginstruction.o ext/dom/cdatasection.o ext/dom/documentfragment.o ext/dom/domimplementation.o ext/dom/element.o ext/dom/node.o ext/dom/string_extend.o ext/dom/characterdata.o ext/dom/documenttype.o ext/dom/domimplementationlist.o ext/dom/entity.o ext/dom/nodelist.o ext/dom/text.o ext/dom/comment.o ext/dom/domconfiguration.o ext/dom/domimplementationsource.o ext/dom/entityreference.o ext/dom/notation.o ext/dom/xpath.o ext/dom/dom_iterators.o ext/dom/typeinfo.o ext/dom/domerror.o ext/dom/domlocator.o ext/dom/namednodemap.o ext/dom/userdatahandler.o ext/exif/exif.o ext/ftp/php_ftp.o ext/ftp/ftp.o ext/iconv/iconv.o ext/ldap/ldap.o ext/mbstring/oniguruma/regcomp.o ext/mbstring/oniguruma/regerror.o ext/mbstring/oniguruma/regexec.o ext/mbstring/oniguruma/reggnu.o ext/mbstring/oniguruma/regparse.o ext/mbstring/oniguruma/regenc.o ext/mbstring/oniguruma/regext.o ext/mbstring/oniguruma/regsyntax.o ext/mbstring/oniguruma/regtrav.o ext/mbstring/oniguruma/regversion.o ext/mbstring/oniguruma/st.o ext/mbstring/oniguruma/enc/unicode.o ext/mbstring/oniguruma/enc/ascii.o ext/mbstring/oniguruma/enc/utf8.o ext/mbstring/oniguruma/enc/euc_jp.o ext/mbstring/oniguruma/enc/euc_tw.o ext/mbstring/oniguruma/enc/euc_kr.o ext/mbstring/oniguruma/enc/sjis.o ext/mbstring/oniguruma/enc/iso8859_1.o ext/mbstring/oniguruma/enc/iso8859_2.o ext/mbstring/oniguruma/enc/iso8859_3.o ext/mbstring/oniguruma/enc/iso8859_4.o ext/mbstring/oniguruma/enc/iso8859_5.o ext/mbstring/oniguruma/enc/iso8859_6.o ext/mbstring/oniguruma/enc/iso8859_7.o ext/mbstring/oniguruma/enc/iso8859_8.o ext/mbstring/oniguruma/enc/iso8859_9.o ext/mbstring/oniguruma/enc/iso8859_10.o ext/mbstring/oniguruma/enc/iso8859_11.o ext/mbstring/oniguruma/enc/iso8859_13.o ext/mbstring/oniguruma/enc/iso8859_14.o ext/mbstring/oniguruma/enc/iso8859_15.o ext/mbstring/oniguruma/enc/iso8859_16.o ext/mbstring/oniguruma/enc/koi8.o ext/mbstring/oniguruma/enc/koi8_r.o ext/mbstring/oniguruma/enc/big5.o ext/mbstring/oniguruma/enc/utf16_be.o ext/mbstring/oniguruma/enc/utf16_le.o ext/mbstring/oniguruma/enc/utf32_be.o ext/mbstring/oniguruma/enc/utf32_le.o ext/mbstring/libmbfl/filters/html_entities.o ext/mbstring/libmbfl/filters/mbfilter_7bit.o ext/mbstring/libmbfl/filters/mbfilter_ascii.o ext/mbstring/libmbfl/filters/mbfilter_base64.o ext/mbstring/libmbfl/filters/mbfilter_big5.o ext/mbstring/libmbfl/filters/mbfilter_byte2.o ext/mbstring/libmbfl/filters/mbfilter_byte4.o ext/mbstring/libmbfl/filters/mbfilter_cp1251.o ext/mbstring/libmbfl/filters/mbfilter_cp1252.o ext/mbstring/libmbfl/filters/mbfilter_cp866.o ext/mbstring/libmbfl/filters/mbfilter_cp932.o ext/mbstring/libmbfl/filters/mbfilter_cp936.o ext/mbstring/libmbfl/filters/mbfilter_euc_cn.o ext/mbstring/libmbfl/filters/mbfilter_euc_jp.o ext/mbstring/libmbfl/filters/mbfilter_euc_jp_win.o ext/mbstring/libmbfl/filters/mbfilter_euc_kr.o ext/mbstring/libmbfl/filters/mbfilter_euc_tw.o ext/mbstring/libmbfl/filters/mbfilter_htmlent.o ext/mbstring/libmbfl/filters/mbfilter_hz.o ext/mbstring/libmbfl/filters/mbfilter_iso2022_kr.o ext/mbstring/libmbfl/filters/mbfilter_iso8859_1.o ext/mbstring/libmbfl/filters/mbfilter_iso8859_10.o ext/mbstring/libmbfl/filters/mbfilter_iso8859_13.o ext/mbstring/libmbfl/filters/mbfilter_iso8859_14.o ext/mbstring/libmbfl/filters/mbfilter_iso8859_15.o ext/mbstring/libmbfl/filters/mbfilter_iso8859_16.o ext/mbstring/libmbfl/filters/mbfilter_iso8859_2.o ext/mbstring/libmbfl/filters/mbfilter_iso8859_3.o ext/mbstring/libmbfl/filters/mbfilter_iso8859_4.o ext/mbstring/libmbfl/filters/mbfilter_iso8859_5.o ext/mbstring/libmbfl/filters/mbfilter_iso8859_6.o ext/mbstring/libmbfl/filters/mbfilter_iso8859_7.o ext/mbstring/libmbfl/filters/mbfilter_iso8859_8.o ext/mbstring/libmbfl/filters/mbfilter_iso8859_9.o ext/mbstring/libmbfl/filters/mbfilter_jis.o ext/mbstring/libmbfl/filters/mbfilter_koi8r.o ext/mbstring/libmbfl/filters/mbfilter_armscii8.o ext/mbstring/libmbfl/filters/mbfilter_qprint.o ext/mbstring/libmbfl/filters/mbfilter_sjis.o ext/mbstring/libmbfl/filters/mbfilter_ucs2.o ext/mbstring/libmbfl/filters/mbfilter_ucs4.o ext/mbstring/libmbfl/filters/mbfilter_uhc.o ext/mbstring/libmbfl/filters/mbfilter_utf16.o ext/mbstring/libmbfl/filters/mbfilter_utf32.o ext/mbstring/libmbfl/filters/mbfilter_utf7.o ext/mbstring/libmbfl/filters/mbfilter_utf7imap.o ext/mbstring/libmbfl/filters/mbfilter_utf8.o ext/mbstring/libmbfl/filters/mbfilter_uuencode.o ext/mbstring/libmbfl/mbfl/mbfilter.o ext/mbstring/libmbfl/mbfl/mbfilter_8bit.o ext/mbstring/libmbfl/mbfl/mbfilter_pass.o ext/mbstring/libmbfl/mbfl/mbfilter_wchar.o ext/mbstring/libmbfl/mbfl/mbfl_convert.o ext/mbstring/libmbfl/mbfl/mbfl_encoding.o ext/mbstring/libmbfl/mbfl/mbfl_filter_output.o ext/mbstring/libmbfl/mbfl/mbfl_ident.o ext/mbstring/libmbfl/mbfl/mbfl_language.o ext/mbstring/libmbfl/mbfl/mbfl_memory_device.o ext/mbstring/libmbfl/mbfl/mbfl_string.o ext/mbstring/libmbfl/mbfl/mbfl_allocators.o ext/mbstring/libmbfl/nls/nls_de.o ext/mbstring/libmbfl/nls/nls_en.o ext/mbstring/libmbfl/nls/nls_ja.o ext/mbstring/libmbfl/nls/nls_kr.o ext/mbstring/libmbfl/nls/nls_neutral.o ext/mbstring/libmbfl/nls/nls_ru.o ext/mbstring/libmbfl/nls/nls_uni.o ext/mbstring/libmbfl/nls/nls_zh.o ext/mbstring/libmbfl/nls/nls_hy.o ext/mbstring/mbstring.o ext/mbstring/php_unicode.o ext/mbstring/mb_gpc.o ext/mbstring/php_mbregex.o ext/mysql/php_mysql.o ext/mysqli/mysqli.o ext/mysqli/mysqli_api.o ext/mysqli/mysqli_prop.o ext/mysqli/mysqli_nonapi.o ext/mysqli/mysqli_fe.o ext/mysqli/mysqli_report.o ext/mysqli/mysqli_repl.o ext/mysqli/mysqli_driver.o ext/mysqli/mysqli_warning.o ext/mysqli/mysqli_exception.o ext/mysqli/mysqli_embedded.o ext/odbc/php_odbc.o ext/pcre/pcrelib/maketables.o ext/pcre/pcrelib/get.o ext/pcre/pcrelib/study.o ext/pcre/pcrelib/pcre.o ext/pcre/php_pcre.o ext/pdo/pdo.o ext/pdo/pdo_dbh.o ext/pdo/pdo_stmt.o ext/pdo/pdo_sql_parser.o ext/pdo/pdo_sqlstate.o ext/pdo_sqlite/pdo_sqlite.o ext/pdo_sqlite/sqlite_driver.o ext/pdo_sqlite/sqlite_statement.o ext/pdo_sqlite/sqlite/src/attach.o ext/pdo_sqlite/sqlite/src/auth.o ext/pdo_sqlite/sqlite/src/btree.o ext/pdo_sqlite/sqlite/src/build.o ext/pdo_sqlite/sqlite/src/callback.o ext/pdo_sqlite/sqlite/src/date.o ext/pdo_sqlite/sqlite/src/delete.o ext/pdo_sqlite/sqlite/src/expr.o ext/pdo_sqlite/sqlite/src/func.o ext/pdo_sqlite/sqlite/src/hash.o ext/pdo_sqlite/sqlite/src/insert.o ext/pdo_sqlite/sqlite/src/legacy.o ext/pdo_sqlite/sqlite/src/main.o ext/pdo_sqlite/sqlite/src/os_mac.o ext/pdo_sqlite/sqlite/src/os_unix.o ext/pdo_sqlite/sqlite/src/os_win.o ext/pdo_sqlite/sqlite/src/pager.o ext/pdo_sqlite/sqlite/src/pragma.o ext/pdo_sqlite/sqlite/src/prepare.o ext/pdo_sqlite/sqlite/src/printf.o ext/pdo_sqlite/sqlite/src/random.o ext/pdo_sqlite/sqlite/src/select.o ext/pdo_sqlite/sqlite/src/table.o ext/pdo_sqlite/sqlite/src/tokenize.o ext/pdo_sqlite/sqlite/src/trigger.o ext/pdo_sqlite/sqlite/src/update.o ext/pdo_sqlite/sqlite/src/utf.o ext/pdo_sqlite/sqlite/src/util.o ext/pdo_sqlite/sqlite/src/vacuum.o ext/pdo_sqlite/sqlite/src/vdbeapi.o ext/pdo_sqlite/sqlite/src/vdbeaux.o ext/pdo_sqlite/sqlite/src/vdbe.o ext/pdo_sqlite/sqlite/src/vdbemem.o ext/pdo_sqlite/sqlite/src/where.o ext/pdo_sqlite/sqlite/src/parse.o ext/pdo_sqlite/sqlite/src/opcodes.o ext/pdo_sqlite/sqlite/src/alter.o ext/pdo_sqlite/sqlite/src/experimental.o ext/posix/posix.o ext/session/session.o ext/session/mod_files.o ext/session/mod_mm.o ext/session/mod_user.o ext/simplexml/simplexml.o ext/sockets/sockets.o ext/spl/php_spl.o ext/spl/spl_functions.o ext/spl/spl_engine.o ext/spl/spl_iterators.o ext/spl/spl_array.o ext/spl/spl_directory.o ext/spl/spl_sxe.o ext/spl/spl_exceptions.o ext/spl/spl_observer.o ext/sqlite/sqlite.o ext/sqlite/sess_sqlite.o ext/sqlite/pdo_sqlite2.o ext/sqlite/libsqlite/src/opcodes.o ext/sqlite/libsqlite/src/parse.o ext/sqlite/libsqlite/src/encode.o ext/sqlite/libsqlite/src/auth.o ext/sqlite/libsqlite/src/btree.o ext/sqlite/libsqlite/src/build.o ext/sqlite/libsqlite/src/delete.o ext/sqlite/libsqlite/src/expr.o ext/sqlite/libsqlite/src/func.o ext/sqlite/libsqlite/src/hash.o ext/sqlite/libsqlite/src/insert.o ext/sqlite/libsqlite/src/main.o ext/sqlite/libsqlite/src/os.o ext/sqlite/libsqlite/src/pager.o ext/sqlite/libsqlite/src/printf.o ext/sqlite/libsqlite/src/random.o ext/sqlite/libsqlite/src/select.o ext/sqlite/libsqlite/src/table.o ext/sqlite/libsqlite/src/tokenize.o ext/sqlite/libsqlite/src/update.o ext/sqlite/libsqlite/src/util.o ext/sqlite/libsqlite/src/vdbe.o ext/sqlite/libsqlite/src/attach.o ext/sqlite/libsqlite/src/btree_rb.o ext/sqlite/libsqlite/src/pragma.o ext/sqlite/libsqlite/src/vacuum.o ext/sqlite/libsqlite/src/copy.o ext/sqlite/libsqlite/src/vdbeaux.o ext/sqlite/libsqlite/src/date.o ext/sqlite/libsqlite/src/where.o ext/sqlite/libsqlite/src/trigger.o regex/regcomp.o regex/regexec.o regex/regerror.o regex/regfree.o ext/standard/array.o ext/standard/base64.o ext/standard/basic_functions.o ext/standard/browscap.o ext/standard/crc32.o ext/standard/crypt.o ext/standard/cyr_convert.o ext/standard/datetime.o ext/standard/dir.o ext/standard/dl.o ext/standard/dns.o ext/standard/exec.o ext/standard/file.o ext/standard/filestat.o ext/standard/flock_compat.o ext/standard/formatted_print.o ext/standard/fsock.o ext/standard/head.o ext/standard/html.o ext/standard/image.o ext/standard/info.o ext/standard/iptc.o ext/standard/lcg.o ext/standard/link.o ext/standard/mail.o ext/standard/math.o ext/standard/md5.o ext/standard/metaphone.o ext/standard/microtime.o ext/standard/pack.o ext/standard/pageinfo.o ext/standard/quot_print.o ext/standard/rand.o ext/standard/reg.o ext/standard/soundex.o ext/standard/string.o ext/standard/scanf.o ext/standard/syslog.o ext/standard/type.o ext/standard/uniqid.o ext/standard/url.o ext/standard/url_scanner.o ext/standard/var.o ext/standard/versioning.o ext/standard/assert.o ext/standard/strnatcmp.o ext/standard/levenshtein.o ext/standard/incomplete_class.o ext/standard/url_scanner_ex.o ext/standard/ftp_fopen_wrapper.o ext/standard/http_fopen_wrapper.o ext/standard/php_fopen_wrapper.o ext/standard/credits.o ext/standard/css.o ext/standard/var_unserializer.o ext/standard/ftok.o ext/standard/sha1.o ext/standard/user_filters.o ext/standard/uuencode.o ext/standard/filters.o ext/standard/proc_open.o ext/standard/sunfuncs.o ext/standard/streamsfuncs.o ext/standard/http.o ext/tokenizer/tokenizer.o ext/xml/xml.o ext/xml/compat.o TSRM/TSRM.o TSRM/tsrm_strtok_r.o TSRM/tsrm_virtual_cwd.o main/main.o main/snprintf.o main/spprintf.o main/php_sprintf.o main/safe_mode.o main/fopen_wrappers.o main/alloca.o main/php_scandir.o main/php_ini.o main/SAPI.o main/rfc1867.o main/php_content_types.o main/strlcpy.o main/strlcat.o main/mergesort.o main/reentrancy.o main/php_variables.o main/php_ticks.o main/network.o main/php_open_temporary_file.o main/php_logos.o main/output.o main/streams/streams.o main/streams/cast.o main/streams/memory.o main/streams/filter.o main/streams/plain_wrapper.o main/streams/userspace.o main/streams/transports.o main/streams/xp_socket.o main/streams/mmap.o Zend/zend_language_parser.o Zend/zend_language_scanner.o Zend/zend_ini_parser.o Zend/zend_ini_scanner.o Zend/zend_alloc.o Zend/zend_compile.o Zend/zend_constants.o Zend/zend_dynamic_array.o Zend/zend_execute_API.o Zend/zend_highlight.o Zend/zend_llist.o Zend/zend_opcode.o Zend/zend_operators.o Zend/zend_ptr_stack.o Zend/zend_stack.o Zend/zend_variables.o Zend/zend.o Zend/zend_API.o Zend/zend_extensions.o Zend/zend_hash.o Zend/zend_list.o Zend/zend_indent.o Zend/zend_builtin_functions.o Zend/zend_sprintf.o Zend/zend_ini.o Zend/zend_qsort.o Zend/zend_multibyte.o Zend/zend_ts_hash.o Zend/zend_stream.o Zend/zend_iterators.o Zend/zend_interfaces.o Zend/zend_exceptions.o Zend/zend_strtod.o Zend/zend_objects.o Zend/zend_object_handlers.o Zend/zend_objects_API.o Zend/zend_mm.o Zend/zend_default_classes.o Zend/zend_reflection_api.o Zend/zend_execute.o sapi/apache/sapi_apache.o sapi/apache/mod_php5.o sapi/apache/php_apache.o main/internal_functions.o  -liodbc -lmysqlclient -lldap -llber -lcurl -lz -lm -lxml2 -lz -liconv -lm -lcurl -lssl -lcrypto -lz -lxml2 -lz -liconv -lm -lmysqlclient -lz -lm -liodbc -lxml2 -lz -liconv -lm -lxml2 -lz -liconv -lm  -o libs/libphp5.bundle && cp libs/libphp5.bundle libs/libphp5.so
/usr/bin/ld: warning multiple definitions of symbol _regcomp
/usr/sbin/httpd definition of _regcomp
/usr/lib/gcc/powerpc-apple-darwin8/4.0.0/../../../libm.dylib(regcomp.So) definition of _regcomp
/usr/bin/ld: warning multiple definitions of symbol _regexec
/usr/sbin/httpd definition of _regexec
/usr/lib/gcc/powerpc-apple-darwin8/4.0.0/../../../libm.dylib(regexec.So) definition of _regexec
/usr/bin/ld: warning multiple definitions of symbol _regfree
/usr/sbin/httpd definition of _regfree
/usr/lib/gcc/powerpc-apple-darwin8/4.0.0/../../../libm.dylib(regfree.So) definition of _regfree
/usr/bin/ld: Undefined symbols:
_zif_mysqli_get_charset
collect2: ld returned 1 exit status
make: *** [libs/libphp5.bundle] Error 


GCC 4.0 and everything else included with Xcode 2.1.