Στις Δευ 26 Νοε 2012, ο/η Dirk Eddelbuettel έγραψε: > Hang in there. It would be nice to get this going, and document it. It is, > as so many things, frightfully tedious in Windows but I think it can be > done.
Finally nailed it!!! Compiled and run qtdensity example on windows. :D > It may of course also work with the Qt binary you got. Sometimes it is > just link order etc pp. But hard to tell. That's exactly what the problem was: the linker was linking against libRcpp.a before linking libRInside.a. So I had to modify the qtdensity.pro file, and move $$RINSIDELIBS just before $$RCPPLIBS on line 46 (QMAKE_LIBS). That did the trick. In addition, I had to replace single quotes on lines 31,32,41 and 42 with double quotes, otherwise Rscript would not properly evaluate RInside:::LdFlags(). I used the latest Qt SDK (1.2.1), which includes the Qt 4.8.1 binaries, Qt Creator and MinGW 4.4.0. Didn't need to compile Qt from source. R was binary as well. I did need however to install Rcpp and RInside from source, and with the same compiler used to compile qtdensity (otherwise I would get additional linker errors). As I had trouble getting the (Cygwin-based) g++ shipped with Rtools to work with Qt, I used instead the g++ shipped with Qt SDK to compile Rcpp and RInside. To do that, I adjusted the PATH environment variable to point to QtSDK\mingw\bin instead of Rtools\gcc-4.6.3\bin. That's the whole story of how it worked for me. I suggest that qtdensity.pro receive these two modifications for the next RInside release (patch included); I tried this on Linux too and it seems to do no harm there. I do wonder why linking order seems to matter on windows and not on linux, but I'm no expert.... Thanks again, Theodore
--- qtdensity.pro.orig 2012-11-28 01:24:41.000000000 +0200 +++ qtdensity.pro 2012-11-28 01:24:08.000000000 +0200 @@ -28,8 +28,8 @@ RRPATH = -Wl,-rpath,$$R_HOME/lib ## include headers and libraries for Rcpp interface classes -RCPPINCL = $$system($$R_HOME/bin/Rscript -e \'Rcpp:::CxxFlags\(\)\') -RCPPLIBS = $$system($$R_HOME/bin/Rscript -e \'Rcpp:::LdFlags\(\)\') +RCPPINCL = $$system($$R_HOME/bin/Rscript -e \"Rcpp:::CxxFlags\(\)\") +RCPPLIBS = $$system($$R_HOME/bin/Rscript -e \"Rcpp:::LdFlags\(\)\") ## for some reason when building with Qt we get this each time ## /usr/local/lib/R/site-library/Rcpp/include/Rcpp/module/Module_generated_ctor_signature.h:25: warning: unused parameter ‘classname @@ -38,12 +38,12 @@ #RCPPWARNING = -Wno-unused-parameter ## include headers and libraries for RInside embedding classes -RINSIDEINCL = $$system($$R_HOME/bin/Rscript -e \'RInside:::CxxFlags\(\)\') -RINSIDELIBS = $$system($$R_HOME/bin/Rscript -e \'RInside:::LdFlags\(\)\') +RINSIDEINCL = $$system($$R_HOME/bin/Rscript -e \"RInside:::CxxFlags\(\)\") +RINSIDELIBS = $$system($$R_HOME/bin/Rscript -e \"RInside:::LdFlags\(\)\") ## compiler etc settings used in default make rules QMAKE_CXXFLAGS += $$RCPPWARNING $$RCPPFLAGS $$RCPPINCL $$RINSIDEINCL -QMAKE_LIBS += $$RLDFLAGS $$RBLAS $$RLAPACK $$RCPPLIBS $$RINSIDELIBS +QMAKE_LIBS += $$RLDFLAGS $$RBLAS $$RLAPACK $$RINSIDELIBS $$RCPPLIBS ## addition clean targets QMAKE_CLEAN += qtdensity Makefile
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