ext/gd/libgd/.libs/gdkanji.o: In function `do_convert’:

/root/php-5.2.12/ext/gd/libgd/gdkanji.c:350: undefined reference to `libiconv_open’

/root/php-5.2.12/ext/gd/libgd/gdkanji.c:365: undefined reference to `libiconv’

/root/php-5.2.12/ext/gd/libgd/gdkanji.c:381: undefined reference to `libiconv_close’

ext/iconv/.libs/iconv.o: In function `_php_iconv_strlen’:

/root/php-5.2.12/ext/iconv/iconv.c:603: undefined reference to `libiconv_open’

/root/php-5.2.12/ext/iconv/iconv.c:626: undefined reference to `libiconv’

/root/php-5.2.12/ext/iconv/iconv.c:660: undefined reference to `libiconv_close’

ext/iconv/.libs/iconv.o: In function `php_iconv_string’:

/root/php-5.2.12/ext/iconv/iconv.c:441: undefined reference to `libiconv_open’

/root/php-5.2.12/ext/iconv/iconv.c:453: undefined reference to `libiconv’

/root/php-5.2.12/ext/iconv/iconv.c:467: undefined reference to `libiconv’

/root/php-5.2.12/ext/iconv/iconv.c:478: undefined reference to `libiconv_close’

ext/iconv/.libs/iconv.o: In function `_php_iconv_strpos’:

/root/php-5.2.12/ext/iconv/iconv.c:851: undefined reference to `libiconv_open’

/root/php-5.2.12/ext/iconv/iconv.c:879: undefined reference to `libiconv’

/root/php-5.2.12/ext/iconv/iconv.c:993: undefined reference to `libiconv_close’

ext/iconv/.libs/iconv.o: In function `_php_iconv_appendl’:

/root/php-5.2.12/ext/iconv/iconv.c:348: undefined reference to `libiconv’

/root/php-5.2.12/ext/iconv/iconv.c:385: undefined reference to `libiconv’

ext/iconv/.libs/iconv.o: In function `_php_iconv_substr’:

/root/php-5.2.12/ext/iconv/iconv.c:723: undefined reference to `libiconv_open’

/root/php-5.2.12/ext/iconv/iconv.c:747: undefined reference to `libiconv’

/root/php-5.2.12/ext/iconv/iconv.c:802: undefined reference to `libiconv_close’

/root/php-5.2.12/ext/iconv/iconv.c:806: undefined reference to `libiconv_close’

/root/php-5.2.12/ext/iconv/iconv.c:755: undefined reference to `libiconv_open’

ext/iconv/.libs/iconv.o: In function `_php_iconv_mime_decode’:

/root/php-5.2.12/ext/iconv/iconv.c:1354: undefined reference to `libiconv_open’

/root/php-5.2.12/ext/iconv/iconv.c:1465: undefined reference to `libiconv_close’

/root/php-5.2.12/ext/iconv/iconv.c:1468: undefined reference to `libiconv_open’

/root/php-5.2.12/ext/iconv/iconv.c:1823: undefined reference to `libiconv_close’

/root/php-5.2.12/ext/iconv/iconv.c:1826: undefined reference to `libiconv_close’

ext/iconv/.libs/iconv.o: In function `php_iconv_stream_filter_dtor’:

/root/php-5.2.12/ext/iconv/iconv.c:2465: undefined reference to `libiconv_close’

ext/iconv/.libs/iconv.o: In function `_php_iconv_mime_encode’:

/root/php-5.2.12/ext/iconv/iconv.c:1043: undefined reference to `libiconv_open’

/root/php-5.2.12/ext/iconv/iconv.c:1057: undefined reference to `libiconv_open’

/root/php-5.2.12/ext/iconv/iconv.c:1316: undefined reference to `libiconv_close’

/root/php-5.2.12/ext/iconv/iconv.c:1319: undefined reference to `libiconv_close’

/root/php-5.2.12/ext/iconv/iconv.c:1176: undefined reference to `libiconv’

/root/php-5.2.12/ext/iconv/iconv.c:1128: undefined reference to `libiconv’

/root/php-5.2.12/ext/iconv/iconv.c:1160: undefined reference to `libiconv’

/root/php-5.2.12/ext/iconv/iconv.c:1319: undefined reference to `libiconv_close’

/root/php-5.2.12/ext/iconv/iconv.c:1228: undefined reference to `libiconv’

/root/php-5.2.12/ext/iconv/iconv.c:1259: undefined reference to `libiconv’

/root/php-5.2.12/ext/iconv/iconv.c:1303: undefined reference to `libiconv’

ext/iconv/.libs/iconv.o: In function `php_iconv_stream_filter_append_bucket’:

/root/php-5.2.12/ext/iconv/iconv.c:2615: undefined reference to `libiconv’

/root/php-5.2.12/ext/iconv/iconv.c:2615: undefined reference to `libiconv’

ext/iconv/.libs/iconv.o:/root/php-5.2.12/ext/iconv/iconv.c:2537: more undefined references to `libiconv’ follow

ext/iconv/.libs/iconv.o: In function `php_iconv_stream_filter_ctor’:

/root/php-5.2.12/ext/iconv/iconv.c:2491: undefined reference to `libiconv_open’

ext/xmlrpc/libxmlrpc/.libs/encodings.o: In function `convert’:

/root/php-5.2.12/ext/xmlrpc/libxmlrpc/encodings.c:73: undefined reference to `libiconv_open’

/root/php-5.2.12/ext/xmlrpc/libxmlrpc/encodings.c:81: undefined reference to `libiconv’

/root/php-5.2.12/ext/xmlrpc/libxmlrpc/encodings.c:101: undefined reference to `libiconv_close’

collect2: ld returned 1 exit status

make: *** [sapi/cli/php] ?.. 1

處理方法：

./configure …………

vi Makefile

找到下面這行：

EXTRA_LIBS =-lcrypt ...

在最后添加-liconv

原文：http://www.cnblogs.com/yoursoul/p/5070103.html

總結

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