Makefile.in

#=====================================================================#
# User Options
#=====================================================================#

COMPILER = gnu
COARRAY  = yes
DEBUG    = yes
PROFILE  = no
OPTIMIZE = no
MPI      = no
HDF5     = no
PETSC    = no
F2008    = yes
LAPACK   = yes
COMPLEX  = no

#=====================================================================#
# External Library Paths
#=====================================================================#

MPI_DIR    = $(HOME)/install/mpich-3.2/builild
HDF5_DIR   = /opt/hdf5/1.8.9-$(COMPILER)
PETSC_DIR  = $(HOME)/install/petsc/3.7.4
LAPACK_DIR = /usr

#=====================================================================#
# Add git SHA-1 hash
#=====================================================================#

# GIT_SHA1 = $(shell git log -1 | head -n 1 | awk '{print $$2}')

#=====================================================================#
# GNU Fortran compiler options
#=====================================================================#

ifeq ($(COMPILER),gnu)
  # Vanilla gnu or Coarray wrapper
  ifeq ($(COARRAY),yes)
    F90 = caf
  else
    F90 = gfortran
  endif
  F90FLAGS := -cpp -fbacktrace

  # COMPLEX mode
  ifeq ($(COMPLEX),yes)
    F90FLAGS += -DUSE_COMPLEX
  endif

  # Disable F2008 STD
  ifeq ($(F2008),no)
    F90FLAGS +=  -DNO_F2008
  endif

  # Debugging
  ifeq ($(DEBUG),yes)
    F90FLAGS += -g -Wall -pedantic -fbounds-check \
                -ffpe-trap=invalid,overflow,underflow
    LDFLAGS  += -g
  endif

  # Profiling
  ifeq ($(PROFILE),yes)
    F90FLAGS += -pg
    LDFLAGS  += -pg
  endif

  # Optimization
  ifeq ($(OPTIMIZE),yes)
    F90FLAGS += -O3
  endif
endif

#=====================================================================#
# Intel Fortran compiler options
#=====================================================================#

ifeq ($(COMPILER),intel)
  F90 = ifort
  F90FLAGS := -cpp -warn -assume byterecl -traceback
  LDFLAGS =

  # Debugging
  ifeq ($(DEBUG),yes)
    F90FLAGS += -g -ftrapuv -fp-stack-check -check all -fpe0
    LDFLAGS  += -g
  endif

  # Profiling
  ifeq ($(PROFILE),yes)
    F90FLAGS += -pg
    LDFLAGS  += -pg
  endif

  # Optimization
  ifeq ($(OPTIMIZE),yes)
    F90FLAGS += -O3
  endif
endif

#=====================================================================#
# Setup External Libraries
#=====================================================================#

# LAPACK for linear algebra
ifeq ($(LAPACK),yes)
  F90FLAGS += -I$(LAPACK_DIR)/include
  LDFLAGS  += -L$(LAPACK_DIR)/lib -llapack
endif

# MPI for distributed-memory parallelism

ifeq ($(MPI),yes)
  F90 = mpif90
  F90FLAGS += -DMPI
endif

# HDF5 for I/O

ifeq ($(HDF5),yes)
  F90FLAGS += -DHDF5 -I$(HDF5_DIR)/include
  LDFLAGS += -L$(HDF5_DIR)/lib $(HDF5_DIR)/lib/libhdf5hl_fortran.a \
             $(HDF5_DIR)/lib/libhdf5_hl.a $(HDF5_DIR)/lib/libhdf5_fortran.a \
             $(HDF5_DIR)/lib/libhdf5.a -lz -lrt -lm -Wl,-rpath -Wl,$(HDF5_DIR)/lib
endif

# PETSC
ifeq ($(PETSC),yes)
  # Check to make sure MPI is set
  ifneq ($(MPI),yes)
    $(error MPI must be enabled to compile with PETSC!)
  endif

  # Set up PETSc environment
  F90FLAGS += -I${PETSC_DIR}/linux-gnu-c-opt/include -DPETSC
  LDFLAGS +=  -lpetsc
endif

#=====================================================================#
# Machine-specific setup
#=====================================================================#

# IBM Blue Gene/P ANL supercomputer

ifeq ($(MACHINE),bluegene)
  F90 = /bgsys/drivers/ppcfloor/comm/xl/bin/mpixlf2003
  F90FLAGS = -WF,-DNO_F2008,-DMPI -O3
endif

# Cray XK6 ORNL Titan supercomputer

ifeq ($(MACHINE),crayxk6)
  F90 = ftn
  F90FLAGS += -DMPI
endif