Hi all,
I can't get my C routines running on a windows box. I have no problems at
all in Linux.
On windows, I have installed cygwin and the compilation works well but once
I execute "dyn.load(.)" it hangs whatever I use C/C++ interfaces.
In Linux it works wonderful but I need to get this code running on windows
boxes.
I know that the problem should be something with the dll generation/linkage
in windows but I can't figure out.
As a matter of test I did the following C code:
#include <R.h>
#include <Rinternals.h>
SEXP thisisatest(SEXP);
SEXP thisisatest(SEXP a)
{
long int i;
if (!isReal(a)) printf("Vector should be double.\n");
for (i=LENGTH(a)-1; i >=0; i--) {
REAL(a)[i] = REAL(a)[i] + 1;
}
return (a);
}
Linux output:
R CMD SHLIB thisisthetest.c
gcc -I/usr/lib/R/include -I/usr/local/include -D__NO_MATH_INLINES -mieee-fp
-fPIC -O2 -g -pipe -march=i386 -mcpu=i686 -c thisisthetest.c -o
thisisthetest.o
g++ -shared -L/usr/local/lib -o thisisthetest.so thisisthetest.o
In R:
> dyn.load("thisisthetest.so")
> .Call("thisisatest",5)
[1] 6
>
[[ WONDERFUL ]]
Windows output:
L:\R>Rcmd SHLIB thisisthetest.c
making thisisthetest.d from thisisthetest.c
gcc -IC:/PROGRA~1/R/rw2001/include -Wall -O2 -c thisisthetest.c -o
thisisthetest.o
ar cr thisisthetest.a thisisthetest.o
ranlib thisisthetest.a
gcc --shared -s -o thisisthetest.dll thisisthetest.def thisisthetest.a
-LC:/PROGRA~1/R/rw2001/src/gnuwin32 -lg2c -lR
In R:
> dyn.load("thisisthetest.dll")
[[ IT HANGS ]]
I have tried different combinations in paths (for library search) and
compiling inside cygwin. no success.
Any comments are very very very welcome.
Thanks !
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