Hello r-helpers,
I am new to Rtools and would like to build dll's from fortran subroutines for
use within R.
I have had no luck compiling the following simple fortran code;
c sample subroutine to include for R
subroutine multiply(ax,bx,cx)
implicit none
integer ax,bx,cx
cx=ax*bx
end
>From the directory in which the file is located I used the following command;
R CMD SHLIB multiply.f
With the following a sample of the error messages, and no dll produced;
cygwin warning:
MS-DOS style path detected: C:/PROGRA~1/R/R-215~1.1/etc/i386/Makeconf
Preferred POSIX equivalent is:
/cygdrive/c/PROGRA~1/R/R-215~1.1/etc/i386/Makeconf
CYGWIN environment variable option "nodosfilewarning" turns off this warning.
Consult the user's guide for more details about POSIX paths:
http://cygwin.com/cygwin-ug-net/using.html#using-pathnames
gcc -shared -s -static-libgcc -o multiply.dll tmp.def multiply.o -lgfortran
-LC:/PROGRA~1/R/R-215~1.1/bin/i386 -lR
c:/rtools/gcc-4.6.3/bin/../lib/gcc/i686-w64-mingw32/4.6.3/../../../../i686-w64-mingw32/lib/../lib/dllcrt2.o:
In function `pre_c_init':
/data/gannet/ripley/Sources/mingw-test3/src/mingw-w64/stable/v2.x/mingw-w64-crt/crt/crtdll.c:67:
undefined reference to `_encode_pointer'
My system variables path is as follows;
c:\Rtools\bin;c:\Rtools\gcc-4.6.3\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program
Files (x86)\Microsoft Application Virtualization Client;C:\Program
Files\WIDCOMM\Bluetooth Software\;C:\Program Files\WIDCOMM\Bluetooth
Software\syswow64;C:\Program Files (x86)\Internet Explorer;C:\Program
Files\R\R-2.15.1\bin;C:\Program Files\TortoiseSVN\bin;C:\Program Files
(x86)\MiKTeX 2.9\miktex\bin\
R info as follows;
platform "i386-pc-mingw32"
arch "i386"
os "mingw32"
system "i386, mingw32"
status ""
major "2"
minor "15.1"
year "2012"
month "06"
day "22"
svn.rev "59607"
language "R"
version.string "R version 2.15.1 (2012-06-22)"
nickname "Roasted Marshmallows"
Thanks in advance
Justin Hughes
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