Configure can't find iconv.h and iconv_open() in iconv.h

This problem can be fixed by this code
"
ln -s /usr/local/lib/libiconv.so /usr/lib/libiconv.so
ln -s /usr/local/lib/libiconv.a /usr/lib/libiconv.a
ln -s /usr/local/lib/libiconv.la /usr/lib/libiconv.la
ln -s /usr/local/include/iconv.h /usr/include/iconv.h
"