macos - 无法在OS X上链接到iconv

我正在尝试使用依赖于iconv的CMake构建一个库。我已经在Macports上安装了它，但是每当尝试构建库时，都会出现以下错误:

Undefined symbols for architecture x86_64:
  "_iconv", referenced from:
      _mariadb_convert_string in my_charset.c.o
  "_iconv_close", referenced from:
      _mariadb_convert_string in my_charset.c.o
  "_iconv_open", referenced from:
      _mariadb_convert_string in my_charset.c.o
ld: symbol(s) not found for architecture x86_64

我有一个FindIconv.cmake文件，似乎在正确的位置。可能出什么问题了？

最佳答案

您可能与使用的库/标题不匹配。看来您使用/ usr / include中的 header 编译了源代码，并试图链接到/opt/local/lib/libiconv.dylib

~ $ nm -m /usr/lib/libiconv.dylib | grep iconv_close
0000000000002ea4 (__TEXT,__text) external _iconv_close

~ $ nm -m /opt/local/lib/libiconv.dylib | grep iconv_close
0000000000003ec0 (__TEXT,__text) external _libiconv_close

确保使用-I / opt / local / include进行编译