Redding, Matthew wrote:
Hello R Developers,
This is my first foray into using c-code with R, so please forgive my
foolishness.
I had a look at the archives and did not find anything on this, so
hopefully I am not doubling up.
I have tried to use R cmd to create an object file from the odesolve
dynload example.
I am using windows and have just installed rtools, and have the latest
version of stable R (2..7.2).
This is what happened:
C:\Program Files\R\R-2.7.2\library\odesolve\dynload\c>Rcmd SHLIB mymod.c
making mymod.d from mymod.c
windres --preprocessor="gcc -E -xc -DRC_INVOKED" -I
C:/PROGRA~1/R/R-27~1.2/include -i mymod_res.rc -o mymod_res.o
gcc -std=gnu99 -shared -s -o mymod.dll mymod.def mymod.o mymod_res.o
-LC:/PROGRA~1/R/R-27~1.2/bin -lR
Cannot export myderivs: symbol not found
Cannot export myjac: symbol not found
Cannot export mymod: symbol not found
mymod.o: In function `mymod':
/home/setzer/tasks/Programming_Projects/odesolve/odesolve/inst/dynload/c
/mymod.c:14: undefined reference to `GLOBAL_OFFSET_TA
BLE_'
mymod.o: In function `myderivs':
/home/setzer/tasks/Programming_Projects/odesolve/odesolve/inst/dynload/c
/mymod.c:21: undefined reference to `GLOBAL_OFFSET_TA
BLE_'
mymod.o: In function `myjac':
/home/setzer/tasks/Programming_Projects/odesolve/odesolve/inst/dynload/c
/mymod.c:30: undefined reference to `GLOBAL_OFFSET_TA
BLE_'
collect2: ld returned 1 exit status
make: *** [mymod.dll] Error 1
Any ideas what I have not got set up properly? What do I need to do to
get this firing?
Advice appreciated.
I'm a bit rusty on the windows tools, but it looks like mymod.o and
mymod_res.rc not being made above. Any chance that you have old
versions lying around?
--
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c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
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