[mpas-developers] improved Makefile

[Michael Duda]

Hi, Folks,

With more than just a couple people now compiling the MPAS code on
various platforms, I was thinking of ways to make the build process
friendlier (especially in the sense of removing the need to manually
edit the Makefile for a particular system after checking out the
code). I've attached a new Makefile that has specific targets for
different platforms, where compiling is now accomplished by typing,
for example, 'make pgi' or 'make xlf'. I'm not claiming that this is
necessarily the way in which we will want to manage building on
different platforms in future, but it is a simple modification to the
existing Makefile that will hopefully make our lives easier in the
present. 

If what I've attached looks reasonable to everyone, I'll go ahead and
commit the new Makefile. Of course, if anyone has any suggestions,
they would be most welcome, too.

Cheers,
Michael
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#MODEL_FORMULATION = -DNCAR_FORMULATION
MODEL_FORMULATION = -DLANL_FORMULATION

#EXPAND_LEVELS = -DEXPAND_LEVELS=32
#FILE_OFFSET = -DOFFSET64BIT

dummy:
	@( echo "try one of:"; \
	echo "   make xlf"; \
	echo "   make pgi"; \
	echo "   make ifort"; \
	echo "   make gfortran"; \
	)

xlf:
	( make all \
	"FC = mpxlf90" \
	"CC = mpcc" \
	"SFC = xlf90" \
	"SCC = xlc" \
	"FFLAGS = -qrealsize=8 -g -C " \
	"CFLAGS = -g" \
	"LDFLAGS = -g -C" \
	"CPPFLAGS = -DRKIND=8 $(MODEL_FORMULATION) $(EXPAND_LEVELS) -D_MPI $(FILE_OFFSET)" )
 
pgi:
	( make all \
	"FC = mpif90" \
	"CC = mpicc" \
	"SFC = pgf90" \
	"SCC = pgcc" \
	"FFLAGS = -r8 -O3" \
	"CFLAGS = -O3" \
	"LDFLAGS = -O3" \
	"CPPFLAGS = -DRKIND=8 $(MODEL_FORMULATION) $(EXPAND_LEVELS) -D_MPI -DUNDERSCORE $(FILE_OFFSET)" )

ifort:
	( make all \
	"FC = mpif90" \
	"CC = gcc" \
	"SFC = ifort" \
	"SCC = gcc" \
	"FFLAGS = -real-size 64 -O3" \
	"CFLAGS = -O3 -m64" \
	"LDFLAGS = -O3" \
	"CPPFLAGS = -DRKIND=8 $(MODEL_FORMULATION) $(EXPAND_LEVELS) -D_MPI -DUNDERSCORE -m64 $(FILE_OFFSET)" )

gfortran:
	( make all \
	"FC = mpif90" \
	"CC = mpicc" \
	"SFC = gfortran" \
	"SCC = gcc" \
	"FFLAGS = -O3 -m64 -ffree-line-length-none" \
	"CFLAGS = -O3 -m64" \
	"LDFLAGS = -O3 -m64" \
	"CPPFLAGS = -DRKIND=8 $(MODEL_FORMULATION) $(EXPAND_LEVELS) -D_MPI -DUNDERSCORE -m64 $(FILE_OFFSET)" )



CPPINCLUDES = -I../inc -I$(NETCDF)/include
FCINCLUDES = -I../inc -I$(NETCDF)/include
LIBS = -L$(NETCDF)/lib -lnetcdf

RM = rm -f
CPP = cpp -C -P -traditional
RANLIB = ranlib

#########################
# Section for Zoltan TPL                                                                                                                                                                                      
#########################
ifdef ZOLTAN_HOME
   FFLAGS += -DHAVE_ZOLTAN
   CFLAGS += -DHAVE_ZOLTAN
   CPPFLAGS += -DHAVE_ZOLTAN

   ifdef ZOLTAN_INC_PATH
      FCINCLUDES += -I$(ZOLTAN_INC_PATH)
   else
      FCINCLUDES += -I$(ZOLTAN_HOME)/include
   endif

   ifdef ZOLTAN_LIB_PATH
      LIBS += -L$(ZOLTAN_LIB_PATH) -lzoltan
   else
      LIBS += -L$(ZOLTAN_HOME)/lib -lzoltan
   endif
endif
#########################

all: reg_includes externals swmodel_main

reg_includes:
	cd Registry; make CC="$(SCC)"
	cd Registry; ./parse Registry; mv *.inc ../inc

externals:
	cd external; make FC="$(FC)" SFC="$(SFC)" CC="$(CC)" SCC="$(SCC)" FFLAGS="$(FFLAGS)" CFLAGS="$(CFLAGS)" CPP="$(CPP)" RANLIB="$(RANLIB)" NETCDF="$(NETCDF)"

swmodel_main: 
	cd src; make FC="$(FC)" CC="$(CC)" CFLAGS="$(CFLAGS)" FFLAGS="$(FFLAGS)" LDFLAGS="$(LDFLAGS)" RM="$(RM)" CPP="$(CPP)" CPPFLAGS="$(CPPFLAGS)" LIBS="$(LIBS)" CPPINCLUDES="$(CPPINCLUDES)" FCINCLUDES="$(FCINCLUDES)"
	if [ ! -e swmodel ]; then ln -s src/swmodel .; fi

clean:
	cd Registry; make clean
	cd external; make clean
	cd src; make clean RM="$(RM)"
	$(RM) inc/*.inc
	$(RM) swmodel