How to make a package with RcppGSL

rcppGSLpackage.txt

Things to do (MacOS Sierra):

1. make a file: src/Makevars that contains:

PKG_CFLAGS = `gsl-config --cflags`
PKG_LIBS = `gsl-config --libs`
PKG_CPPFLAGS = -I../inst/include

2. the DESCRIPTION should include:

Imports: Rcpp
LinkingTo: Rcpp, RcppGSL

3. the NAMESPACE should look like:

exportPattern("^[[:alpha:]]+")
importFrom(Rcpp, evalCpp)
useDynLib(MYPACKAGE)

4. if you need to link to external .h or .hpp files, put them in inst/include/ ; to access them from .cpp files in src/ you will use the tag #include <MYHEADER.h>