gfortran Makefile for windows

I am unaware that gfortran or gcc4 exist as a MinGW binary for Windows.
You mention Cygwin, but that is not a supported platform for R.

There is a g95 binary for Windows.

You can find how to link on Windows from the sources: most of the rules 
are in src/gnuwin32/MkRules.   I suspect all you need is to set 
pkgname-DLLLIBS appropriately.


I don't see that you need a Makefile: a Makevars file would suffice and 
avoid your hardcoding so many OS-specific features.  In any case it seems 
to me that in general you need to link against the Fortran libraries: you 
may get away with it on MacOS, but you will not on Windows.

Support for F95 files is planned for R 2.3.0, but depends on being able to 
differentiate F77 and F95 sources where needed (most platforms). 
Meanwhile we will try to add an example to the R-admin manual for 2.2.0.

Hi all,

(Originally posted to r-help)

Congratulations: you have now read the posting guide and selected an 
appropriate list!  Perhaps soon you will get the part about not sending 
HTML mail?

Seriously, there is a posting guide, and it asks you to do your homework 
before posting.  Please show us the courtesy of doing so.

I'm porting a package that I've worked on for OS X to Windows.
The package is written in F95 so I need to compile it with gfortran
and link it with gcc4.

I've been trying to build an R with gcc4 without luck so far. If there is
a binary of such a thing info would be appreciated.

This package requires a Makefile. My question is, how can I find out
(or what is), the link command?

Here is the OS X Makefile:


RLIB_LOC=${R_HOME}

F90_FILES=\
class_data_frame.f90 \
class_old_dbest.f90 \
class_cm_data.f90 \
class_cm.f90 \
class_bgw.f90 \
class_cm_mle.f90 \
cme.f90


FORTRAN_FILES=\
dgletc.f \
dglfgb.f\
dglfg.f\
dmdc.f\
mecdf.f


%.o: %.f90
gfortran -c -g $<

%.o: %.f
gfortran -c -g $<

bpkg.so: $(F90_FILES:%.f90=%.o) $(FORTRAN_FILES:%.f=%.o)
gcc -Wall -bundle -flat_namespace -undefined suppress -L/sw/lib
-L/usr/local/lib -o $@ $^ \
-L$(RLIB_LOC)/lib -lR

###EOF####

The -L lib dirs are not correct. On a *nix platform I would do something
like this

sh -x R CMD SHLIB ...

to get at the R internal link information but I can't get that to work on
Cygwin.

Regards,

Joel

--
Joel Bremson
Graduate Student
Institute for Transportation Studies - UC Davis
http://etrans.blogspot.com

	[[alternative HTML version deleted]]

Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

I am unaware that gfortran or gcc4 exist as a MinGW binary for Windows.
You mention Cygwin, but that is not a supported platform for R.

There is a g95 binary for Windows.

At www.g95.org, but I found no installation instructions relevant to 
Windows.  Some comments at the end of this message.

[...]

Support for F95 files is planned for R 2.3.0, but depends on being able to
differentiate F77 and F95 sources where needed (most platforms).
Meanwhile we will try to add an example to the R-admin manual for 2.2.0.

Here is an example src/Makefile.win for a package called testf95 that uses 
F95/F90 only.

% cat testf95/src/Makefile.win

DLLNAME=testf95 # will not be needed in 2.2.0

include $(RHOME)/src/gnuwin32/MkRules

F90SOURCES=$(wildcard -f *.f90)
F95SOURCES=$(wildcard -f *.f95)
OBJS=$(F90SOURCES:.f90=.o) $(F95SOURCES:.f95=.o)

G95=c:/packages/g95/bin/g95
MINGW=c:/packages/gcc-3.4.4/

.SUFFIXES: .f90 .f95
.f90.o:
 	$(G95) -c $< -o $@
.f95.o:
 	$(G95) -c $< -o $@

## at least on my setup, G95 is not searching MinGW libs.
DLL=$(G95) -L$(MINGW)/lib

all: $(DLLNAME).dll

## Rules copied from MakeDll

RCNAME=${DLLNAME}_res
RCOBJ=$(RCNAME).o
RESFLAGS=--include-dir $(RHOME)/include
$(DLLNAME)_res.rc:
 	@PERL5LIB=$(RHOME)/share/perl perl 
$(RHOME)/src/gnuwin32/makeDllRes.pl $(DLLNAME) > $@
$(DLLNAME)_res.o: $(DLLNAME)_res.rc $(RHOME)/include/Rversion.h
$(DLLNAME).a: $(OBJS)
$(DLLNAME).dll : $(DLLNAME).a $(RCOBJ)


It works for me, but do be aware that it will depend on the
fine details of how your MinGW/G95 tools are installed.  I had to copy
dllcrt2.o from MINGW/lib to
C:/packages/g95/lib/gcc-lib/i686-pc-mingw32/4.0.1 since the paths are
processed after that file.  It is probably better to fiddle with the specs 
file.

Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595