On 16 May 2015 at 01:55, Klemens Weigl wrote: | Hi! | | I would like to use Rcpp (Rcpp.h) with Qt Creator and a Mac. | | So far I installed Rcpp successfully with RStudio. When I wanted to use it in a | Qt project it always gives me the answer: 'Rcpp.h' file not found. | | | In the Terminal I found the directory in: | cd /Library/Frameworks/R.framework/Resources/library | in the .Pro-File (of the project) I tried: | INCLUDEPATH += /Users/xy/Library/Frameworks/R.framework/Resources/library/Rcpp/ | include | LIBS += -I/Users/xy/Library/ -framework R | | Exists there a solution to access directly to Rcpp.h via Qt when it was | installed with RStudio? | | I would appreciate if someone has got an idea/link/blog... to enable Rcpp.h | also in Qt with a Mac!
The general mechanism with Qt -- on _any_ platform -- with to use the .pro file to create an appropriate Makefile. On my Linux box, and using _the working and documented example for RInsite_ : edd@max:~/git/rinside/inst/examples/qt(master)$ grep RCPPINCL qtdensity.pro RCPPINCL = $$system($$R_HOME/bin/Rscript -e \"Rcpp:::CxxFlags\(\)\") QMAKE_CXXFLAGS += $$RCPPWARNING $$RCPPFLAGS $$RCPPINCL $$RINSIDEINCL edd@max:~/git/rinside/inst/examples/qt(master)$ You then run qmake: edd@max:~/git/rinside/inst/examples/qt(master)$ qmake edd@max:~/git/rinside/inst/examples/qt(master)$ grep INCPATH Makefile | head -1 INCPATH = -I. -isystem /usr/include/x86_64-linux-gnu/qt5 -isystem /usr/include/x86_64-linux-gnu/qt5/QtSvg -isystem /usr/include/x86_64-linux-gnu/qt5/QtWidgets -isystem /usr/include/x86_64-linux-gnu/qt5/QtGui -isystem /usr/include/x86_64-linux-gnu/qt5/QtCore -I. -I/usr/lib/x86_64-linux-gnu/qt5/mkspecs/linux-g++-64 edd@max:~/git/rinside/inst/examples/qt(master)$ This now took the _abstract definition of 'ask R where Rcpp says its headers are' and encode it in a way that make understands. Now we can build: edd@max:~/git/rinside/inst/examples/qt(master)$ make edd@max:~/git/rinside/inst/examples/qt(master)$ [ Using qt5 on Ubuntu 15.05, that currently fails with a linking error main.o:(.bss+0x0): multiple definition of `R_running_as_main_program' but I am pretty certain this still worked just a few weeks/months ago under the previous Ubuntu release. ] In any event, the main story here is that _building programs with Qt is different_ and you need to learn how to tell the Qt build framework where the Rcpp resources are. Hope this helps, Dirk -- http://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
