Hi all,
I have Win XP and R 2.3.1 on my notebook. I would like to write a package which
includes some Fortran 95 code. Interestingly, if I compile and link the simple
file test90.f90 directly with
g95 -c test90.f90
g95 -shared -o test90.dll test90.o
then PE Viewer ( a dll viewer) shows me the right functions in the export
table, hence I can use the dll in R. But as it should become part of a package
I wrote the simple src/Makefile
F95=g95
prog: test90.f90
$(F95) -shared -o test90.dll test90.o
test90.f90: test90.f90
$(F95) -c test90.f90
which looks totally equal to the 2 commands above. If I run now
Rcmd check --no-latex test90
Rcmd install test90
then test90.dll is made but the export table is empty and therefore in R the
functions cannot be loaded.
Any idea? Can it be that Rcmd gives further flags to the compiler/linker?
Any hints appreciated
Meinhard Ploner
South Tyrol (Italy)
PS The fortran file is simply:
SUBROUTINE BLABLA(A)
!DEC$ ATTRIBUTES DLLEXPORT :: blabla ### without this line the prob is the
same :-(
IMPLICIT DOUBLE PRECISION (A-H,O-Z)
A=A+1
RETURN
END SUBROUTINE BLABLA
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