Hi,
I have downloaded and installed R from R-3.4-r72492-branch-el-capitan.pkg.
My OS: OS X El Capitan (10.11.6)
My packages and all additional tests of these are working correctly.
I can install Rcpp.
Packages requiring Rcpp however don't seem to install or run.
Running otool -L on /Library/Frameworks/R.framework/Versions/3.4/Resources/library/Rcpp/libs/Rcpp.so
gives
Rcpp.so:
Rcpp.so (compatibility version 0.0.0, current version 0.0.0)
/Library/Frameworks/R.framework/Versions/3.4/Resources/lib/libR.dylib (compatibility version 3.4.0, current version 3.4.0)
/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation (compatibility version 150.0.0, current version 1259.0.0)
/usr/local/clang4/lib/libc++.1.dylib (compatibility version 1.0.0, current version 1.0.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1226.10.1)
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?
Berend Hasselman