OPT   +=  -DPMGRID=2560
OPT   +=  -DWALLCLOCK   
OPT   +=  -DFOF
OPT   +=  -DTWOPOINT
OPT   +=  -DPOWERSPEC
OPT   +=  -DOUTPUT_LONGRANGE_POTENTIAL

#OPT   +=  -DDOUBLEPRECISION      
#OPT   +=  -DDOUBLEPRECISION_FFTW

#OPT   +=  -DNOTREERND 
#OPT   +=  -DNOSTOP_WHEN_BELOW_MINTIMESTEP
#OPT   +=  -DT3E    
#OPT   +=  -DNOTYPEPREFIX_FFTW        
#OPT   +=  -DMAKEGLASS=1000000    # if a value is assigned to MAKEGLASS, a glass is generated
		 	          # with this number of particles, otherwise a file is read

#OPT   +=  -DASMTH=1.25         #  Can be used to override default value of 1.25 
#OPT   +=  -DRCUT=4.5          # Can be used to override default value of 4.5

OPT   +=  -DGROUP_MIN_LEN=20  # Can be used to override default minimum particle number of 32 in groups 
#OPT   +=  -DLINKLENGTH=0.2    # Can be used to override default linking length of 0.2

OPT   +=  -DDOMAINLEVELS=5    # For Millennium run: Override default value of 4 with 5 
OPT   +=  -DHASHBITS=8        # For Millennium run: Override default value of 6 with 8
OPT   +=  -DFRACTION_TP=2.0  # for Millennium run: Override with 2.0

OPT   +=  -DNODES=16
OPT   +=  -DPROCSPERNODE=32 


#OPT   +=  -DHPM


SYSTYPE="Regatta"
#SYSTYPE="RZG_LinuxCluster"
#SYSTYPE="RZG_LinuxCluster-gcc"
#SYSTYPE="MPA"
#SYSTYPE="Solaris"



CC       =   mpicc        # sets the C-compiler (default)
OPTIMIZE =   -O3 -Wall    # optimization and warning flags (default)




ifeq ($(SYSTYPE),"MPA")
GSL_INCL = -I/usr/common/pdsoft/include
GSL_LIBS = -L/usr/common/pdsoft/lib
endif


ifeq ($(SYSTYPE),"Regatta")
CC       =   mpcc_r   # sets the C-compiler
OPTIMIZE =   -O5 -qstrict -qipa -q64 -g

GSL_INCL = -I/afs/ipp-garching.mpg.de/u/vrs/gsl_psi64/include  -I/afs/rzg/@sys/lib/include
GSL_LIBS = -L/afs/ipp-garching.mpg.de/u/vrs/gsl_psi64/lib                
FFTW_INCL= -I/afs/ipp-garching.mpg.de/u/vrs/fftw_psi64/include
FFTW_LIBS= -L/afs/ipp-garching.mpg.de/u/vrs/fftw_psi64/lib -qipa -q64
endif


ifeq ($(SYSTYPE),"RZG_LinuxCluster")
CC       =   mpicci   # sets the C-compiler
OPTIMIZE =   -O3 -ip 

GSL_INCL = -I/afs/ipp-garching.mpg.de/u/vrs/gsl_linux/include
GSL_LIBS = -L/afs/ipp-garching.mpg.de/u/vrs/gsl_linux/lib                -static
FFTW_INCL= -I/afs/ipp-garching.mpg.de/u/vrs/fftw_linux/include
FFTW_LIBS= -L/afs/ipp-garching.mpg.de/u/vrs/fftw_linux/lib
endif


ifeq ($(SYSTYPE),"RZG_LinuxCluster-gcc")
CC       =   /afs/ipp-garching.mpg.de/u/vrs/bin/mpiccf   # sets the gcc C-compiler
OPTIMIZE =   -O3 -Wall

GSL_INCL = -I/afs/ipp-garching.mpg.de/u/vrs/gsl_linux_gcc3.2/include
GSL_LIBS = -L/afs/ipp-garching.mpg.de/u/vrs/gsl_linux_gcc3.2/lib
FFTW_INCL= -I/afs/ipp-garching.mpg.de/u/vrs/fftw_linux_gcc3.2/include
FFTW_LIBS= -L/afs/ipp-garching.mpg.de/u/vrs/fftw_linux_gcc3.2/lib  

endif

ifeq ($(SYSTYPE),"Solaris")
CC       =   mpcc   # sets the C-compiler
OPTIMIZE =   -i -fast -xvector -xarch=v9b -xchip=ultra3 -xcache=64/32/4:8192/512/1 -I/opt/local/include

GSL_INCL = -I/opt/local/include/gsl
GSL_LIBS = -L/opt/local/lib/sparcv9               
FFTW_INCL= -I/opt/local/include
FFTW_LIBS= -L/opt/local/lib/sparcv9
endif

EXEC   = L-Gadget2

OBJS   = memtest.o sendrecv.o main.o mymalloc.o fof.o  run.o  predict.o begrun.o endrun.o global.o  \
	 init.o restart.o  io.o accel.o   read_ic.o  twopoint.o \
	 system.o  allocate.o gravtree.o  driftfac.o \
	 domain.o  allvars.o forcetree.o   peano.o  pm_periodic.o  


INCL   = allvars.h  proto.h  forcetree.h  domain.h fof.h  #Makefile


CFLAGS =   $(OPTIMIZE) $(OPT) $(GSL_INCL) $(FFTW_INCL)

 
ifeq (NOTYPEPREFIX_FFTW,$(findstring NOTYPEPREFIX_FFTW,$(OPT)))    # fftw installed with type prefix?
  FFTW_LIB = $(FFTW_LIBS) -lrfftw_mpi -lfftw_mpi -lrfftw -lfftw
else
ifeq (DOUBLEPRECISION_FFTW,$(findstring DOUBLEPRECISION_FFTW,$(OPT))) 
  FFTW_LIB = $(FFTW_LIBS) -ldrfftw_mpi -ldfftw_mpi -ldrfftw -ldfftw
else
  FFTW_LIB = $(FFTW_LIBS) -lsrfftw_mpi -lsfftw_mpi -lsrfftw -lsfftw
endif
endif


LIBS   = -g  -lm    $(GSL_LIBS) -lgsl -lgslcblas  $(FFTW_LIB)

ifeq ($(SYSTYPE),"Solaris")
LIBS   =   -R/opt/local/lib/sparcv9 -lm  -lmpi   $(GSL_LIBS) -lgsl -lgslcblas  $(FFTW_LIB)
endif

ifeq ($(SYSTYPE),"Regatta")
ifeq (HPM,$(findstring HPM,$(OPT)))  
LIBS   =  -L/afs/rzg/@sys/lib -lhpm -lpmapi -lm    $(GSL_LIBS) -lgsl -lgslcblas  $(FFTW_LIB)
endif
endif

$(EXEC): $(OBJS) 
	$(CC) $(OPTIMIZE) $(OBJS) $(LIBS)   -o  $(EXEC)  

$(OBJS): $(INCL) 


clean:
	rm -f $(OBJS) $(EXEC)