Attempts to install package lme4 result in:
cpp -o external.o
In file included from external.cpp:8:0:
predModule.h:12:23: fatal error: RcppEigen.h: No such file or directory
compilation terminated.
/usr/lib64/R/etc/Makeconf:139: recipe for target 'external.o' failed
make: *** [external.o] Error 1
ERROR: compilation failed for package ‘lme4’
The system is Fedora Core 23 R is 3.3.1 Searches do not produce references to resolve the RccpEigen reference. Is there a workaround.