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  4. How to use Rcpp in Qt (with Mac) [Almost Solved]?
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How to use Rcpp in Qt (with Mac) [Almost Solved]?

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  • SGaistS Offline
    SGaistS Offline
    SGaist
    Lifetime Qt Champion
    wrote on last edited by
    #11

    Hi and welcome to devnet,

    Try with -framework R in place of -lR

    Interested in AI ? www.idiap.ch
    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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    • N Offline
      N Offline
      newe12
      wrote on last edited by newe12
      #12

      Thanks!

      Well, now I have got:
      INCLUDEPATH += /Users/xy/share/R/include
      INCLUDEPATH += /Users/xy/Library/Frameworks/R.framework/Resources/library/Rcpp/include
      LIBS += -L/Users/xy/Library -framework R

      but I still get:
      'Rcpp.h' file not found

      also if change to:
      LIBS += -L/Users/xy/Library/Frameworks/R.framework/

      and when I typed in R Studio:
      getw()

      I got:
      /Users/xy

      Sorry, but I do not find the mistake. Any idea?

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      • SGaistS Offline
        SGaistS Offline
        SGaist
        Lifetime Qt Champion
        wrote on last edited by SGaist
        #13

        It depends on how you wrote your includes

        What mistake are you thinking about ?

        Interested in AI ? www.idiap.ch
        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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        • N Offline
          N Offline
          newe12
          wrote on last edited by newe12
          #14

          I wrote my include: #include "Rcpp.h" in mainwindow.cpp.
          It is not conflicting with: #include "math.h", or?

          And it displays: directory not found for: LIBS += -L/Users/xy/Library/Frameworks/R.framework/ and also for: LIBS += -L/Users/xy/Library -framework R

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          • SGaistS Offline
            SGaistS Offline
            SGaist
            Lifetime Qt Champion
            wrote on last edited by
            #15

            To add a path for frameworks you should user -F /Users/xy/Library/Frameworks/
            The includes are generally in fwname.framework/Headers

            Interested in AI ? www.idiap.ch
            Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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            • N Offline
              N Offline
              newe12
              wrote on last edited by newe12
              #16

              Hi!

              Sorry, but Qt still does not find the "Rccp.h" file. I tried to include #include "Rcpp.h" in mainwindow.cpp or in mainwindow.h. Or should I include it in main.cpp?

              and additionally I wrote in the .pro-file:
              HEADERS += mainwindow.h

              FORMS += mainwindow.ui

              INCLUDEPATH += /Users/xy/share/R/include
              INCLUDEPATH += /Users/xy/Library/Frameworks/R.framework/Resources/library/Rcpp/include
              LIBS += -L/Users/xy/Library/Frameworks/R.framework/
              INCLUDEPATH += -F/Users/xy/Library/Frameworks/R.framework/Resources/library/Rcpp/include

              and I tried: INCLUDEPATH += "/Users/.../include" using: "..." but same result.

              In RStudio it gives me:

              .Library
              [1] "/Library/Frameworks/R.framework/Resources/library"
              getwd()
              [1] "/Users/xy"

              So I combined: "/Users/xy/Library/Frameworks/R.framework/Resources/library"

              Unfortunately, always the same result 'Rcpp.h' not found.

              Even they: https://stat.ethz.ch/pipermail/r-sig-mac/2011-May/008270.html found
              "/Library/Frameworks/R.framework/Resources/library" should be alright!

              Has got anyone an idea?

              I just want to use 'Rcpp.h' (which I already installed via RStudio, where it loads and runs without any problems) in Qt with a Mac. :-)

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              • N Offline
                N Offline
                newe12
                wrote on last edited by
                #17

                Has anyone an idea to get Rcpp.h http://dirk.eddelbuettel.com/code/rcpp/html/Rmath_8h.html
                running in Qt with a Mac?

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                • ? Offline
                  ? Offline
                  A Former User
                  wrote on last edited by
                  #18

                  Hi again!
                  Can you open the directory "/Users/xy/Library/Frameworks/R.framework/Resources/library/Rcpp/include" with a file manager? Does it contain the file "Rcpp.h" ?

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                  • N Offline
                    N Offline
                    newe12
                    wrote on last edited by
                    #19

                    Hi,
                    I tried to re-install Rcpp.h:

                    • installing source package ‘Rcpp’ ...
                      ** Paket ‘Rcpp’ erfolgreich entpackt und MD5 Summen überprüft
                      ** libs
                      clang++ -I/Library/Frameworks/R.framework/Resources/include -DNDEBUG -I../inst/include/ -I/usr/local/include -I/usr/local/include/freetype2 -I/opt/X11/include
                      ...
                      ...
                      clang++ -dynamiclib -Wl,-headerpad_max_install_names -undefined dynamic_lookup -single_module -multiply_defined suppress -L/Library/Frameworks/R.framework/Resources/lib -L/usr/local/lib -o Rcpp.so Date.o Module.o Rcpp_init.o api.o attributes.o barrier.o -F/Library/Frameworks/R.framework/.. -framework R -Wl,-framework -Wl,CoreFoundation
                      installing to /Library/Frameworks/R.framework/Versions/3.1/Resources/library/Rcpp/libs
                      ** R
                      ** inst
                      ** preparing package for lazy loading
                      ** help
                      *** installing help indices
                      ** building package indices
                      ** installing vignettes
                      ** testing if installed package can be loaded
                    • DONE (Rcpp)

                    then I used:
                    INCLUDEPATH += /Users/xy/Library/Frameworks/R.framework/Versions/3.1/Resources/library/Rcpp/include
                    LIBS += -I/Library/Frameworks/R.framework/Resources/include
                    or
                    LIBS += -F/Library/Frameworks/R.framework/Resources/include

                    It still does not run!

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                    • ? Offline
                      ? Offline
                      A Former User
                      wrote on last edited by
                      #20

                      Hallo :-)

                      -o Rcpp.so Date.o Module.o Rcpp_init.o api.o attributes.o

                      I see that some object code files have been installed. But are you really sure that the file "Rcpp.h" exists in "/Users/xy/Library/Frameworks/R.framework/Versions/3.1/Resources/library/Rcpp/include" ? Maybe the Rcpp project has been split in two separate packages: One package only for software that uses Rcpp binaries and a second package for developers that includes all the header files (so called "-dev" package)?

                      N 1 Reply Last reply
                      1
                      • ? A Former User

                        Hallo :-)

                        -o Rcpp.so Date.o Module.o Rcpp_init.o api.o attributes.o

                        I see that some object code files have been installed. But are you really sure that the file "Rcpp.h" exists in "/Users/xy/Library/Frameworks/R.framework/Versions/3.1/Resources/library/Rcpp/include" ? Maybe the Rcpp project has been split in two separate packages: One package only for software that uses Rcpp binaries and a second package for developers that includes all the header files (so called "-dev" package)?

                        N Offline
                        N Offline
                        newe12
                        wrote on last edited by newe12
                        #21

                        Hi Wieland!

                        Thanks! Yes it exists!

                        I checked (in the Terminal): cd /Library/Frameworks/R.framework/Resources/library
                        and then "ls"

                        And it is there: Rcpp

                        Then i changed to: cd Rcpp and "ls" gave me:
                        CITATION NAMESPACE THANKS examples libs
                        DESCRIPTION NEWS.Rd announce help prompt
                        INDEX R discovery html skeleton
                        Meta README doc

                        This was initially downloaded from: http://cran.r-project.org/web/packages/Rcpp/index.html

                        And I changed:
                        INCLUDEPATH += /Users/xy/Library/Frameworks/R.framework/Resources/library/Rcpp/include
                        LIBS += -I/Users/xy/Library/ -framework R
                        in the .Pro-file.

                        Any ideas?

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                        • ? Offline
                          ? Offline
                          A Former User
                          wrote on last edited by A Former User
                          #22

                          Sorry for being pedantic on this (I'm only as pedantic as the compiler is ;-) ). You said:

                          cd /Library/Frameworks/R.framework/Resources/library
                          And it is there: Rcpp

                          That is a directory. Where exactly is the file Rcpp.h?

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                          • N Offline
                            N Offline
                            newe12
                            wrote on last edited by newe12
                            #23

                            Hi Wieland, thanks for your hint!

                            Finally, I found Rcpp.h and I managed to include it with the correct path and now Rcpp.h is found!
                            Here the two steps, which helped me to solve it:

                            1. QMAKE_LFLAGS += -I /Library/Frameworks/R.framework/Resources/library/Rcpp/ # use qmake and then uncomment it
                            2. INCLUDEPATH += -I /Library/Frameworks/R.framework/Resources/library/Rcpp/include
                              Remark: Very important was to change the path directly to /Library/... and include "-I".

                            This first part of the problem is solved!

                            But now, i get the new error message: framework not found R.

                            I use: LIBS += -framework R
                            in the .Pro-file (as suggested here: http://doc.qt.io/qt-4.8/qmake-platform-notes.html).
                            I also tried: LIBS += -framework -lR
                            it also did not work.

                            Here is the error message:

                            ld: framework not found R
                            clang: error: linker command failed with exit code 1 (use -v to see invocation)
                            make: *** [xy.app/Contents/MacOS/xy] Error 1
                            19:13:17: Der Prozess "/usr/bin/make" wurde mit dem Rückgabewert 2 beendet.
                            Fehler beim Erstellen/Deployment des Projekts xy (Kit: Desktop Qt 5.4.1 clang 64bit)
                            Bei der Ausführung von Schritt "Make"

                            I hope this second part can also be solved. Then it should work! Any suggestions?

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                            • SGaistS Offline
                              SGaistS Offline
                              SGaist
                              Lifetime Qt Champion
                              wrote on last edited by
                              #24

                              Hi,

                              Did you add -F/Library/Frameworks to your pro file ? It's the equivalent to -L for libraries

                              Interested in AI ? www.idiap.ch
                              Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                              • N Offline
                                N Offline
                                newe12
                                wrote on last edited by
                                #25

                                Yes!

                                Well, the problem removed, but this came up:
                                Undefined symbols for architecture x86_64:
                                "_REprintf", referenced from:
                                Rcpp::Rstreambuf<false>::xsputn(char const*, long) in mainwindow.o
                                Rcpp::Rstreambuf<false>::overflow(int) in mainwindow.o
                                "_R_FlushConsole", referenced from:
                                Rcpp::Rstreambuf<false>::sync() in mainwindow.o
                                Rcpp::Rstreambuf<true>::sync() in mainwindow.o
                                "_Rprintf", referenced from:
                                Rcpp::Rstreambuf<true>::xsputn(char const*, long) in mainwindow.o
                                Rcpp::Rstreambuf<true>::overflow(int) in mainwindow.o
                                ld: symbol(s) not found for architecture x86_64
                                clang: error: linker command failed with exit code 1 (use -v to see invocation)
                                make: *** [xy.app/Contents/MacOS/xy] Error 1
                                23:51:38: Der Prozess "/usr/bin/make" wurde mit dem Rückgabewert 2 beendet.
                                Fehler beim Erstellen/Deployment des Projekts xy (Kit: Desktop Qt 5.4.1 clang 64bit)
                                Bei der Ausführung von Schritt "Make"

                                Especially: symbol(s) not found for architecture x86_64
                                does not disappear after several tries.

                                Here: https://forum.qt.io/topic/35065/solved-qt5-1-qt5-2-xcode-5-0-2-mac-os-10-9-mavericks-can-t-link-to-the-libraries-undefined-symbols-for-architecture-x86_64/11
                                it was described that Xcode and Mac Os were not linked properly.

                                Here: http://stackoverflow.com/questions/25940368/qt5-target-conditionals-not-found
                                QMAKE_MAC_SDK = macosx10.9
                                was suggested. Either it failed, or: Project ERROR: Could not resolve SDK path for 'macosx10.xy'
                                was displayed!

                                Well yet not solved... :-)

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