On 10 January 2017 at 11:55, Costas Tsirogiannis wrote: | Greetings and thanks for previously offered solutions, | | I am developing a package that makes use of C++ code, and I want to compile | this code for testing reasons with the "R CMD SHLIB" command. Using Ubuntu | and gcc 5.4, and because for certain reasons I have to use the c++0x | standard, I try the following command: | | > MAKEFLAGS='CXXFLAGS=-std=c++0x -lpthread -O2' R CMD SHLIB MyMainCode.cpp | | For some weird reason, flag -O2 is not recognized properly and I get the | following error message: | | > make: *** unknown output-sync type '2'. Stop. | | If I try -O3, I get "unknown output-sync type '3' ", and so on. Everything | works fine if I drop this optimization flag. Could you suggest a workaround | for that?
Sounds weird. Wonder if something else could go on here. But in general, using ~/.R/Makevars is better. Try that. edd@max:~$ grep FLAGS ~/.R/Makevars | grep -v "^#" CFLAGS += -O3 -Wall -pipe -pedantic -std=gnu99 CXXFLAGS += -O3 -Wall -pipe -Wno-unused -pedantic FFLAGS += -O3 -g0 -Wall -pipe FCFLAGS += -O3 -g0 -Wall -pipe CXX1XFLAGS=-O3 -Wall -pipe -Wno-unused -pedantic FLAGS=-Wall -O3 DYLIB_LDFLAGS = -Wl,-S -shared -fopenmp# $(CFLAGS) $(CPICFLAGS) SHLIB_CXXLDFLAGS = -Wl,-S -shared SHLIB_CXX1XLDFLAGS = -Wl,-S -shared SHLIB_FCLDFLAGS = -Wl,-S -shared SHLIB_LDFLAGS = -Wl,-S -shared# $(CFLAGS) $(CPICFLAGS) edd@max:~$ Dirk -- http://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org ______________________________________________ R-package-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-package-devel
