RBIN="${R_HOME}/bin/R"
RSCRIPT="${R_HOME}/bin/Rscript"

SWI_HOME=$(shell "${RSCRIPT}" -e "source('../R/plbase.R'); .cat.swipl64()")
ifeq ("$(SWI_HOME)","")
  $(error Please install R package rswipl or SWI-Prolog from https://swi-prolog.org)
else
  $(info Found SWI-Prolog at $(SWI_HOME))
endif

PKG_CPPFLAGS=-I"$(SWI_HOME)/include" -D_REENTRANT -D__SWI_PROLOG__

SWI_LIBS=$(shell "${RSCRIPT}" -e "source('../R/plbase.R'); .cat.swilibs()")
PKG_LIBS=$(SWI_LIBS)
