php make编译时，iconv 报错

报错内容：

　　

Undefined symbols for architecture x86_64:
  "_libiconv", referenced from:
      _php_iconv_string in iconv.o
      __php_iconv_strlen in iconv.o
      _zif_iconv_substr in iconv.o
      __php_iconv_strpos in iconv.o
      _zif_iconv_mime_encode in iconv.o
      __php_iconv_appendl in iconv.o
      _php_iconv_stream_filter_append_bucket in iconv.o
      ...
  "_libiconv_close", referenced from:
      _php_iconv_string in iconv.o
      __php_iconv_strlen in iconv.o
      _zif_iconv_substr in iconv.o
      __php_iconv_strpos in iconv.o
      _zif_iconv_mime_encode in iconv.o
      __php_iconv_mime_decode in iconv.o
      _php_iconv_stream_filter_factory_create in iconv.o
      ...
  "_libiconv_open", referenced from:
      _php_iconv_string in iconv.o
      __php_iconv_strlen in iconv.o
      _zif_iconv_substr in iconv.o
      __php_iconv_strpos in iconv.o
      _zif_iconv_mime_encode 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

解决方法：

　　

1、 ./configure  --prefix=/usr/local/php --with-mysqli=mysqlnd --enable-mysqlnd --with-iconv=/usr/local/opt/libiconv --enable-fpm

2、 修改 Makefile 文件：搜索 -liconv，应该是在 EXTRA_LIBS = 这一行里，将    其替换为 /usr/local/opt/libiconv/lib/libiconv.dylib
3、 make
4、 sudo make install