SHLIB steps on a Makefile
On Thu, 20 Dec 2007, Iago Mosqueira wrote:
Hi, I need to create a Makefile.win for a given package so as to fiddle slightly with the compilation process. My Makefile works fine in Linux
That's rather dangerous: we have had lots of trouble with packages for which the Makefile works on the maintainer's Linux, but not on other people's systems (even Linux ones). Do you really, really need a Makefile.win?: I would be surprised if you did. Only 9 CRAN packages have a Makefile.win, and two of those are dummies and one other we have asked the maintainers to replace by Makevars.win as it is not portable.
but I am having trouble creating Makefile.win for MinGW. I first looked at the commands that Rcmd SHLIB appeared to be running and copied those onto the Makefile. But one step seems to be missing, the creation of the _res.rc file needed by windres g++-sjlj -I$(RHOME)/include -I../inst/include/ -O2 -Wall -c pkg.cpp -o pkg.o windres --preprocessor="gcc-sjlj -E -xc -DRC_INVOKED" -I$(RHOME)/include -I../inst/include -i pkg_res.rc -o pkg_res.o g++-sjlj -shared -s -o pkg.dll pkg.def pkg.o FL pkg_res.o -L$(RHOME)/bin -lR This might be fairly obvious, but it is my first attempt at compiling with MinGW and my search has been fruitless. What is it that I need to add to replicate what Rcmd SHLIB does?
Adding the resources is not essential: they add identification to the
DLL which can be very useful but are icing on the cake. So I would not
try to emulate that step.
But the Makefile in use is src/gnuwin32/MakeDll and that contains
$(DLLNAME)_res.rc:
@PERL5LIB=$(RHOME)/share/perl $(PERL) $(RHOME)/src/gnuwin32/makeDllRes.pl $(DLLNAME) > $@
$(DLLNAME)_res.o: $(DLLNAME)_res.rc $(RHOME)/include/Rversion.h
Brian D. Ripley, ripley at stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595