Hi Akshit, On 15 August 2020 at 17:53, Akshit Achara wrote: | I have created an R package(rminizinc | <https://github.com/acharaakshit/RMiniZinc>) which uses Rcpp. I have a | configure.ac file to set up the paths in my Makevars.in which looks like | this:
You already posted this at StackOverflow. I saw it, but didn't respond as it seemed to both have a) little to do with Rcpp and b) may be an 'XY Problem'. | CXX_STD = CXX11 | PKG_CPPFLAGS = -I. @MZN_INCLUDE@ | PKG_LIBS = @MZN_LIBS@ | OBJECTS.tests = cpp_tests/test-runner.o cpp_tests/test-mzn_parse.o | cpp_tests/test- | set_params.o cpp_tests/test-mzn_eval.o cpp_tests/test-sol_parse.o | cpp_tests/test- | getMissingPars.o | OBJECTS.sources = RcppExports.o set_params.o mzn_parse.o mzn_eval.o sol_parse.o | getMissingPars.o | OBJECTS.helpers = filetoString.o helper_parse.o expDetails.o pathStringcheck.o | OBJECTS = $(OBJECTS.sources) $(OBJECTS.tests) $(OBJECTS.helpers) | $(SOURCES:.cpp=.o) | strippedLib: $(SHLIB) | if test -e "/usr/bin/strip"; then /usr/bin/strip --strip-debug | $(SHLIB); fi.phony: strippedLib | all: clean | clean: | rm -f $(OBJECTS.sources) $(OBJECTS.tests) $(OBJECTS.helpers) *.so | | I want to use the path provided to PKG_LIBS flag in one of my scripts. | Is there any way I could set this flag as a global variable so that I | can read it the script or if it's not possible, how can I extract this | flag from inside R? Sys.getenv() doesn't give the values for PKG_LIBS. It is still not clear what you want and why, and it still has little to do with Rcpp, but some with a (maybe misunderstood ?) way of setting up a package structure. For questions about 'how do I built a package with ....' under a specific perceived or real constraint you could try the the r-package-devel list. Before you do that I would recommend thinking about the problem and maybe trying to explain it another way. From what you wrote now twice I still have no real idea what (and why) you want to do something. If this is about picking a configuration value (such as the at PKG_LIBS which change per installation), yes one can capture that in configure and then pass it to an R or a C/C++ source file. That is what configure does well. Then again you don't have as the Makevars snippet is read _by the same R process_ and you could just extract .libPaths() from src/Makevars (invoking Rscript or R). Good luck. Dirk -- https://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org _______________________________________________ Rcpp-devel mailing list Rcpp-devel@lists.r-forge.r-project.org https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
