#Simple Makefile
#
# IMPORTANT
#   If you are using modules, you must set the appropriate
#   module so the fftw3 libraries can be found.
#
#   module load fftw3-gnu4
#
#  will load the fftw3 module for gnu4 compilers
#
#  This step will automatically set FFTW3_PATH and
#  FFTW3_INCLUDE in your environment. FFTW3_PATH points
#  to the fftw3 library directory and FFTW3_INCLUDE points to
#  to the fftw3 include directory for your compiler.
#  See modules section in the documentation for
#  more information
#
#
# Set Fortran compiler (G77, Gfortran for GNU, pgf90 for Portland Group
FC=gfortran
# Set gfortran Flags
FFLAGS= -O2  
# Set Path to your library files. FFTW3_PATH is defined by
# modules, or you can enter a specific path
LIBPATH= -L$(FFTW3_PATH)
# Set Path to your include files. FFTW3_INCLUDE is defined by
# modules, or you can enter a specific path here
INCPATH= -I$(FFTW3_INCLUDE)
# Set the libraries you need 
LIBS_SINGLE= -lfftw3f
LIBS_DOUBLE= -lfftw3
# Set the source files
DEPS = fftw3-test-single.f fftw3-test-double.f
# Set the object files
OBJ_DOUBLE = fftw3-test-double.o 
OBJ_SINGLE = fftw3-test-single.o 

# Make rules follow

%.o: %.f $(DEPS)  
	$(FC)  $(FFLAGS) $(INCPATH) -c -o $@ $< 

all: fftw3-test-single fftw3-test-double
fftw3-test-double: $(OBJ_DOUBLE)
	$(FC)  $(FFLAGS) -o $@ $^  $(LIBPATH) $(LIBS_DOUBLE)
fftw3-test-single: $(OBJ_SINGLE)
	$(FC)  $(FFLAGS) -o $@ $^ $(LIBPATH) $(LIBS_SINGLE)

clean:
	/bin/rm -f fftw3-test-single fftw3-test-single.o fftw3-test-double fftw3-test-double.o

# Command line version
#
# double precision
# gfortran -o fftw3-test-double fftw3-test-double.f -I$FFTW3_INCLUDE -ffixed-line-length-none -lfftw3 -L$FFTW3_PATH
# single precision
#gfortran -o fftw3-test-single fftw3-test-single.f -I$FFTW3_INCLUDE -ffixed-line-length-none -lfftw3f -L$FFTW3_PATH