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# macOS Makevars configuration for LLVM/GCC
# for OpenMP support with R v3.6
#
# For installation details, see
# http://ryanhomer.github.io/posts/build-openmp-macos-catalina-complete
#
# Some sources used as reference:
# https://github.com/Rdatatable/data.table/wiki/Installation
# https://asieira.github.io/using-openmp-with-r-packages-in-os-x.html
# https://thecoatlessprofessor.com/programming/openmp-in-r-on-os-x/
# https://bit.ly/3d16TuW
# https://www.kthohr.com/r-mac-source.html
XCBASE:=$(shell xcrun --show-sdk-path)
LLVMBASE:=$(shell brew --prefix llvm)
GCCBASE:=$(shell brew --prefix gcc)
GETTEXT:=$(shell brew --prefix gettext)
CC=$(LLVMBASE)/bin/clang
CXX=$(LLVMBASE)/bin/clang++
CXX11=$(LLVMBASE)/bin/clang++
CXX14=$(LLVMBASE)/bin/clang++
CXX17=$(LLVMBASE)/bin/clang++
CXX1X=$(LLVMBASE)/bin/clang++
CPPFLAGS=-isystem "$(LLVMBASE)/include" -isysroot "$(XCBASE)" -fopenmp
LDFLAGS=-L"$(LLVMBASE)/lib" -L"$(GETTEXT)/lib" --sysroot="$(XCBASE)" -fopenmp
FC=$(GCCBASE)/bin/gfortran
F77=$(GCCBASE)/bin/gfortran
FLIBS=-L$(GCCBASE)/lib/gcc/9/ -lm
SHLIB_OPENMP_CFLAGS = -fopenmp
SHLIB_OPENMP_CXXFLAGS = -fopenmp
SHLIB_OPENMP_FFLAGS = -fopenmp
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