gem - 无法 `gem install tiny_tds` OS X Mavericks

Question

错误

$ sudo gem install tiny_tds

Building native extensions. This could take a while...

ERROR: Error installing tiny_tds:

ERROR: Failed to build gem native extension.

/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb

checking for iconv_open() in iconv.h... no

checking for iconv_open() in -liconv... yes

checking for sybfront.h... yes

checking for sybdb.h... yes

checking for tdsdbopen() in -lsybdb... no

家酿
上面的错误即使在

$ brew install freetds

手动安装

$ tar zxf freetds-stable.tgz

$ cd freetds-0.91

$ ./configure

$ make

$ sudo make install

在 /usr/local/lib/ 中似乎缺少以下文件:

libsybdb.so

相反，我有以下文件:

libsybdb.a

libsybdb.dylib

libsybdb.la

研究

https://github.com/Homebrew/homebrew/issues/24550

ROR + Unable to install tiny_tds

Answer 1

我通过明确指定 64 位架构解决了这个问题:

$ brew install freetds
$ sudo ARCHFLAGS="-arch x86_64" gem install tiny_tds

原因是在gem构建过程中，mkmf会尝试寻找32位版本的freetds，该版本不可用。 mkmf.log 中的错误信息说过:

ld: warning: ignoring file /usr/local/lib/libsybdb.dylib, file was built for x86_64 which is not the architecture being linked (i386): /usr/local/lib/libsybdb.dylib
Undefined symbols for architecture i386:
  "_tdsdbopen", referenced from:
      _t in conftest-a13287.o
ld: symbol(s) not found for architecture i386