这是我得到的消息：
Undefined symbols for architecture x86_64: "_iconv_close", referenced from: _zif_iconv_substr in iconv.o _zif_iconv_mime_encode in iconv.o _php_iconv_string in iconv.o __php_iconv_strlen in iconv.o __php_iconv_strpos in iconv.o __php_iconv_mime_decode in iconv.o _php_iconv_stream_filter_cleanup in iconv.o ... "_iconv_open", referenced from: _zif_iconv_substr in iconv.o _zif_iconv_mime_encode in iconv.o _php_iconv_string in iconv.o __php_iconv_strlen in iconv.o __php_iconv_strpos in iconv.o __php_iconv_mime_decode in iconv.o _php_iconv_stream_filter_factory_create in iconv.o ... ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation) make: *** [sapi/cli/php] Error 1 在编译Make时，我也一直收到警告。
例如：
zend_operators.c:2171:34: warning: 'finite' is deprecated: first deprecated in OS X 10.9 [-Wdeprecated-declarations] } else if (dval1 == dval2 && !zend_finite(dval1)) { zend_compile.c:4010:9: warning: assigning to 'char *' from 'const char *' discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers] lcname = hash_key->arKey; ^ ~~~~~~~~~~~~~~~ 'unsigned char *' converts between pointers to integer types with different sign [-Wpointer-sign] sc = YYCURSOR; ^ Zend/zend_ini_scanner.l:479:12: warning: assigning to 'unsigned char *' from 'char *' converts between pointers to integer types with different sign [-Wpointer-sign] YYCURSOR = sc;
他们是更多的那些。
这是我的命令：
./configure --enable-fpm --with-pdo-mysql --with-mcrypt --with-zlib --with-openssl --with-curl make
我以root身份login。
这里有更多的细节：
PHP-5.5.13 Mac OS X 10.9.3
看起来像PHP无法find符号，因为iconv重命名它们。
详细信息请参阅以下链接：
超级用户通过fidell回答
qoute：
MacPorts iconv库将符号重命名为_libiconv_open和_libiconv_close。 这就是PHP无法find它们的原因，…运行nm /opt/local/lib/libiconv.dylib vs nm /usr/lib/libiconv.dylib（在10.7.3中）。