I intend to port an R project from Linux to Windows.
It involves C code that is loaded via dyn.load().
I could manage to produce a 'dll' File using cygwin which seems to be
o.k.
Now, using dyn.load("pcr.dll") i get:
Error in dyn.load(x, as.logical(local), as.logical(now)) :
unable to load shared library
"c:/cygwin/home/pingu/rt-pcr/pcr.dll":
LoadLibrary failure: Invalid access to memory location.
Besides modifying the makefile no changes have been made to the source
code. This is the Makefile (the relevant target is winlib):
---
RHOME="C:/Program Files/R/rw1090"
SOURCE=lambert.c
OBJ=lambert.o brent.o nrutil.o pcr.o
#CFLAGS=-I/usr/lib/R/include -g -O2
CFLAGS+=-I${RHOME}/src/include -mno-cygwin
CFLAGS+=-I/usr/lib/R/include -g -O2
OBJT=${OBJ} test.o
OBJR=${OBJ} pcr-R.o
${OBJ} : ${SOURCE}
# cc -I/usr/lib/R/include -o $@.o $@.c
test : test.o ${OBJ}
cc -g -o test ${OBJT} -lc -lm
lib : ${OBJR}
cc -o pcr.so ${OBJR} -lc -lm -shared
# we may not use ld because the -mno-cygwin cannot be passed
# which is required
winlib : ${OBJR}
cc -mno-cygwin -o pcr.dll ${OBJR} ${RHOME}/bin/R.dll -lc -lm -shared
---
Does anybody have some clue? I am using gcc v3.3.3 and R1.9.0 on
Windows. If there is a recipe somewhere that I have missed I would be
most grateful.
Thank you very much,
Stefan
commercial at s-boehringer.de writes:> I intend to port an R project from Linux to Windows. > It involves C code that is loaded via dyn.load(). > I could manage to produce a 'dll' File using cygwin which seems to be > o.k. > > Now, using dyn.load("pcr.dll") i get: > > Error in dyn.load(x, as.logical(local), as.logical(now)) : > unable to load shared library > "c:/cygwin/home/pingu/rt-pcr/pcr.dll": > LoadLibrary failure: Invalid access to memory location. > > Besides modifying the makefile no changes have been made to the source > code. This is the Makefile (the relevant target is winlib): > --- > RHOME="C:/Program Files/R/rw1090" > > SOURCE=lambert.c > OBJ=lambert.o brent.o nrutil.o pcr.o > #CFLAGS=-I/usr/lib/R/include -g -O2 > CFLAGS+=-I${RHOME}/src/include -mno-cygwin > CFLAGS+=-I/usr/lib/R/include -g -O2 > OBJT=${OBJ} test.o > OBJR=${OBJ} pcr-R.o > > ${OBJ} : ${SOURCE} > # cc -I/usr/lib/R/include -o $@.o $@.c > > test : test.o ${OBJ} > cc -g -o test ${OBJT} -lc -lm > > lib : ${OBJR} > cc -o pcr.so ${OBJR} -lc -lm -shared > > # we may not use ld because the -mno-cygwin cannot be passed > # which is required > winlib : ${OBJR} > cc -mno-cygwin -o pcr.dll ${OBJR} ${RHOME}/bin/R.dll -lc -lm -shared > --- > > Does anybody have some clue? I am using gcc v3.3.3 and R1.9.0 on > Windows. If there is a recipe somewhere that I have missed I would be > most grateful.You're definitely missing R CMD SHLIB for a start. DLLs are more complicated to make than .so files because they require explicit export files and such. This has all been packaged up in a user friendly (as far as Windows allows) set of development tools and whatnot. The place to start reading is readme.packages in the windows distribution, also available from e.g. https://svn.r-project.org/R/trunk/src/gnuwin32/README.packages As the comment at the start of the document indicates, you should take care to read the whole text and follow the instructions very precisely. People often get in trouble by reading what they think it says and not what it actually says... If your original project is in the form of a valid CRAN package, and all the build tools are in place on windows, the porting effort can be as little as "R CMD build --binary mysrc.tar.gz". You probably also want to read the "Writing R Extensions" document, which also ships with R and is on CRAN via http://cran.r-project.org/manuals.html -- O__ ---- Peter Dalgaard Blegdamsvej 3 c/ /'_ --- Dept. of Biostatistics 2200 Cph. N (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907
Don't mix R and Cygwin, at least not this year. Peter's advice is spot on, for the rest. best, -tony On Fri, 14 Jan 2005 10:51:19 +0100 (CET), commercial at s-boehringer.de <commercial at s-boehringer.de> wrote:> I intend to port an R project from Linux to Windows. > It involves C code that is loaded via dyn.load(). > I could manage to produce a 'dll' File using cygwin which seems to be > o.k. > > Now, using dyn.load("pcr.dll") i get: > > Error in dyn.load(x, as.logical(local), as.logical(now)) : > unable to load shared library > "c:/cygwin/home/pingu/rt-pcr/pcr.dll": > LoadLibrary failure: Invalid access to memory location. > > Besides modifying the makefile no changes have been made to the source > code. This is the Makefile (the relevant target is winlib): > --- > RHOME="C:/Program Files/R/rw1090" > > SOURCE=lambert.c > OBJ=lambert.o brent.o nrutil.o pcr.o > #CFLAGS=-I/usr/lib/R/include -g -O2 > CFLAGS+=-I${RHOME}/src/include -mno-cygwin > CFLAGS+=-I/usr/lib/R/include -g -O2 > OBJT=${OBJ} test.o > OBJR=${OBJ} pcr-R.o > > ${OBJ} : ${SOURCE} > # cc -I/usr/lib/R/include -o $@.o $@.c > > test : test.o ${OBJ} > cc -g -o test ${OBJT} -lc -lm > > lib : ${OBJR} > cc -o pcr.so ${OBJR} -lc -lm -shared > > # we may not use ld because the -mno-cygwin cannot be passed > # which is required > winlib : ${OBJR} > cc -mno-cygwin -o pcr.dll ${OBJR} ${RHOME}/bin/R.dll -lc -lm -shared > --- > > Does anybody have some clue? I am using gcc v3.3.3 and R1.9.0 on > Windows. If there is a recipe somewhere that I have missed I would be > most grateful. > > Thank you very much, > > Stefan > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html >-- best, -tony "Commit early,commit often, and commit in a repository from which we can easily roll-back your mistakes" (AJR, 4Jan05). A.J. Rossini blindglobe at gmail.com