[OUTDATED] Build R with OpenBLAS and OpenMP support on MacOS 10.14 (Mojave)

Makevars

# --------
# Makevars
# --------

# Homebrew bin / opt / lib locations
HB=/usr/local/bin
HO=/usr/local/opt
HL=/usr/local/lib

# ccache
CCACHE=$(HB)/ccache

# Make using all cores (set number to your number of cores)
MAKE=make -j8

# GNU version (assumes latest in Homebrew as of May 2019)
VER=9

# LLVM (Clang) compiler options
CC=$(CCACHE) $(HO)/llvm/bin/clang
CXX=$(CC)++

# FORTRAN
FC=$(CCACHE) $(HB)/gfortran-$(VER)
F77=$(FC)
FLIBS=-L$(HL)/gcc/$(VER) -lgfortran -lquadmath -lm

# STD libraries
CXX1XSTD=-std=c++0x
CXX11STD=-std=c++11
CXX14STD=-std=c++14
CXX17STD=-std=c++17

# FLAGS
CFLAGS=-g -O3 -Wall -pedantic -mtune=native -pipe
CXXFLAGS=-g -O3 -Wall -pedantic -mtune=native -pipe 
CPPFLAGS=-I$(HO)/llvm/include -I$(HO)/openssl/include -I$(HO)/gettext/include 
LDFLAGS=-L$(HO)/llvm/lib -L$(HO)/openssl/lib -L$(HO)/gettext/lib

# R-specific flags for OpenMP support
SHLIB_OPENMP_CFLAGS=-fopenmp
SHLIB_OPENMP_CXXFLAGS=-fopenmp
SHLIB_OPENMP_FCFLAGS=-fopenmp
SHLIB_OPENMP_FFLAGS=-fopenmp