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copied!<p>Generally, <strong>this problem is caused by being unable to find the right libiconv</strong>. Here is how I solve my problem:</p> <p>Check output of <code>otool -L /usr/lib/libiconv.2.dylib</code>. I got the following output:</p> <pre><code>/usr/lib/libiconv.2.dylib (compatibility version 7.0.0, current version 7.0.0) /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 169.3.0) </code></pre> <p>Then I install libiconv with Homebrew, <code>brew install libiconv</code>, and show where it was installed using <code>brew list libiconv</code>. I got the following output:</p> <pre><code>/usr/local/Cellar/libiconv/1.14/bin/iconv /usr/local/Cellar/libiconv/1.14/include/ (3 files) /usr/local/Cellar/libiconv/1.14/lib/libcharset.1.dylib /usr/local/Cellar/libiconv/1.14/lib/libiconv.2.dylib /usr/local/Cellar/libiconv/1.14/lib/ (3 other files) /usr/local/Cellar/libiconv/1.14/share/doc/ (6 files) /usr/local/Cellar/libiconv/1.14/share/man/ (6 files) </code></pre> <p>the libiconv is installed in <code>/usr/local/Cellar/libiconv/1.14/lib/libiconv.2.dylib</code>. Then I check verion of newly installed libiconv, <code>otool -L /usr/local/Cellar/libiconv/1.14/lib/libiconv.2.dylib</code>, and I got the following output:</p> <pre><code>/usr/local/Cellar/libiconv/1.14/lib/libiconv.2.dylib: /usr/local/opt/libiconv/lib/libiconv.2.dylib (compatibility version 8.0.0, current version 8.1.0) /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 169.3.0) </code></pre> <p>The version is correct, and we need to make this library available for <a href="http://en.wikipedia.org/wiki/Ruby_%28programming_language%29" rel="nofollow">Ruby</a>. Creating a symbol link is a quick solution:</p> <pre><code>sudo ln -s /usr/local/opt/libiconv/lib/libiconv.2.dylib /opt/local/lib/libiconv.2.dylib </code></pre>

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