<div dir="ltr"><br>Hi R developers, <div><br></div><div>We see the same problem and found that re-install all package with the argument "type = 'source" solves this problem. I don't know what is the reason for this but someone may answer it. <br><div><br>On Friday, April 7, 2017 at 2:11:26 AM UTC-7, Berend Hasselman wrote:<blockquote class="gmail_quote" style="margin: 0;margin-left: 0.8ex;border-left: 1px #ccc solid;padding-left: 1ex;">

<br>Hi,

<br>

I have downloaded and installed R from R-3.4-r72492-branch-el-capitan.pkg.

<br>My OS: OS X El Capitan (10.11.6)

<br>

My packages and all additional tests of these are working correctly.

<br>

I can install Rcpp.

Packages requiring Rcpp however don't seem to install or run.

<br>

<br>

<br>Running otool -L on /Library/Frameworks/R.<wbr>framework/Versions/3.4/<wbr>Resources/library/Rcpp/libs/<wbr>Rcpp.so

<br>gives

<br>

<br>Rcpp.so:

<br>        Rcpp.so (compatibility version 0.0.0, current version 0.0.0)

<br>        /Library/Frameworks/R.<wbr>framework/Versions/3.4/<wbr>Resources/lib/libR.dylib (compatibility version 3.4.0, current version 3.4.0)

<br>        /System/Library/<wbr>Frameworks/CoreFoundation.<wbr>framework/Versions/A/<wbr>CoreFoundation (compatibility version 150.0.0, current version 1259.0.0)

<br>        /usr/local/clang4/lib/<wbr>libc++.1.dylib (compatibility version 1.0.0, current version 1.0.0)

<br>        /usr/lib/libSystem.B.<wbr>dylib (compatibility version 1.0.0, current version 1226.10.1)

<br>

<br>

I don't have  /usr/local/clang4/lib/libc++.1.dylib.

I wouldn't know where to get it from. AFAIK The macOS Commandline Tools do not install stuff in /usr/local.

If this isn't a mishap: where do we get the necessary libc++.1.dylib from?

<br>

<br>Berend Hasselman

<br>

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