# $Id: build_rules.mk,v 1.20 2011/04/04 22:05:31 svasquez Exp $
#
# Dawin.g95.default
#

############################################################
# Default compiler setting.
#
ESMF_F90DEFAULT         = g95
ESMF_CXXDEFAULT         = g++

############################################################
# Default MPI setting.
#
ifeq ($(ESMF_COMM),default)
export ESMF_COMM := mpiuni
endif

############################################################
# MPI dependent settings.
#
ifeq ($(ESMF_COMM),mpiuni)
# MPI stub library -----------------------------------------
ESMF_F90COMPILECPPFLAGS+= -DESMF_MPIUNI
ESMF_CXXCOMPILECPPFLAGS+= -DESMF_MPIUNI
ESMF_CXXCOMPILEPATHS   += -I$(ESMF_DIR)/src/Infrastructure/stubs/mpiuni
ESMF_MPIRUNDEFAULT      = $(ESMF_DIR)/src/Infrastructure/stubs/mpiuni/mpirun
else
ifeq ($(ESMF_COMM),mpich)
# Mpich ----------------------------------------------------
ESMF_F90COMPILECPPFLAGS+= -DESMF_MPICH
ESMF_CXXCOMPILECPPFLAGS+= -DESMF_MPICH
ESMF_F90DEFAULT         = mpif90
ESMF_F90LINKLIBS       += -lpmpich++ -lmpich
ESMF_CXXDEFAULT         = mpicxx
ESMF_MPIRUNDEFAULT      = mpirun $(ESMF_MPILAUNCHOPTIONS)
else
ifeq ($(ESMF_COMM),mpich2)
# Mpich2 ---------------------------------------------------
ESMF_F90DEFAULT         = mpif90
ESMF_CXXDEFAULT         = mpicxx
ESMF_MPIRUNDEFAULT      = mpirun $(ESMF_MPILAUNCHOPTIONS)
ESMF_MPIMPMDRUNDEFAULT  = mpiexec $(ESMF_MPILAUNCHOPTIONS)
else
ifeq ($(ESMF_COMM),mvapich2)
# Mvapich2 ---------------------------------------------------
ESMF_F90DEFAULT         = mpif90
ESMF_CXXDEFAULT         = mpicxx
ESMF_MPIRUNDEFAULT      = mpirun $(ESMF_MPILAUNCHOPTIONS)
ESMF_MPIMPMDRUNDEFAULT  = mpiexec $(ESMF_MPILAUNCHOPTIONS)
else
ifeq ($(ESMF_COMM),lam)
# LAM (assumed to be built with g95) -----------------------
ESMF_CXXCOMPILECPPFLAGS+= -DESMF_NO_SIGUSR2
ESMF_F90DEFAULT         = mpif77
ESMF_CXXDEFAULT         = mpic++
ESMF_MPIRUNDEFAULT      = mpirun $(ESMF_MPILAUNCHOPTIONS)
ESMF_MPIMPMDRUNDEFAULT  = mpiexec $(ESMF_MPILAUNCHOPTIONS)
else
ifeq ($(ESMF_COMM),openmpi)
# OpenMPI --------------------------------------------------
ESMF_CXXCOMPILECPPFLAGS+= -DESMF_NO_SIGUSR2
ESMF_F90DEFAULT         = mpif90
ESMF_F90LINKLIBS       += -lmpi_cxx
ESMF_CXXDEFAULT         = mpicxx
ESMF_CXXLINKLIBS       += -lmpi_f77
ESMF_MPIRUNDEFAULT      = mpirun $(ESMF_MPILAUNCHOPTIONS)
ESMF_MPIMPMDRUNDEFAULT  = mpiexec $(ESMF_MPILAUNCHOPTIONS)
else
ifeq ($(ESMF_COMM),user)
# User specified flags -------------------------------------
else
$(error Invalid ESMF_COMM setting: $(ESMF_COMM))
endif
endif
endif
endif
endif
endif
endif

############################################################
# Print compiler version string
#
ESMF_F90COMPILER_VERSION    = ${ESMF_F90COMPILER} -v --version
ESMF_CXXCOMPILER_VERSION    = ${ESMF_CXXCOMPILER} -v --version

############################################################
# g95 runtime library is not currently thread-safe
#
ESMF_PTHREADS := OFF

############################################################
# g95 currently does not support OpenMP
#
ESMF_OPENMP := OFF

############################################################
# Fortran symbol convention
#
ifeq ($(ESMF_FORTRANSYMBOLS),default)
ESMF_F90COMPILEOPTS       +=
ESMF_F90LINKOPTS          +=
ESMF_CXXCOMPILEOPTS       += -DESMF_LOWERCASE_DOUBLEUNDERSCORE
else
ifeq ($(ESMF_FORTRANSYMBOLS),lowercase_singleunderscore)
ESMF_F90COMPILEOPTS       += -fno-second-underscore
ESMF_F90LINKOPTS          += -fno-second-underscore
ESMF_CXXCOMPILEOPTS       += -DESMF_LOWERCASE_SINGLEUNDERSCORE
else
ifeq ($(ESMF_FORTRANSYMBOLS),lowercase_doubleunderscore)
ESMF_F90COMPILEOPTS       +=
ESMF_F90LINKOPTS          +=
ESMF_CXXCOMPILEOPTS       += -DESMF_LOWERCASE_DOUBLEUNDERSCORE
else
$(error "ESMF_FORTRANSYMBOLS = $(ESMF_FORTRANSYMBOLS)" not supported by ESMF and/or this platform)
endif
endif
endif

############################################################
# Construct the ABISTRING
#
ifeq ($(ESMF_MACHINE),ia64)
ifeq ($(ESMF_ABI),64)
ESMF_ABISTRING := $(ESMF_MACHINE)_64
else
$(error Invalid ESMF_MACHINE / ESMF_ABI combination: $(ESMF_MACHINE) / $(ESMF_ABI))
endif
endif
ifeq ($(ESMF_MACHINE),x86_64)
ifeq ($(ESMF_ABI),32)
ESMF_ABISTRING := $(ESMF_MACHINE)_32
endif
ifeq ($(ESMF_ABI),64)
ESMF_ABISTRING := x86_64_small
endif
endif

############################################################
# Set memory model compiler flags according to ABISTRING
#
ifeq ($(ESMF_ABISTRING),x86_64_32)
ESMF_CXXCOMPILEOPTS       += -m32
ESMF_CXXLINKOPTS          += -m32
ESMF_F90COMPILEOPTS       += -m32
ESMF_F90LINKOPTS          += -m32
endif
ifeq ($(ESMF_ABISTRING),x86_64_small)
ESMF_CXXCOMPILEOPTS       += -m64 -mcmodel=small
ESMF_CXXLINKOPTS          += -m64 -mcmodel=small
ESMF_F90COMPILEOPTS       += -m64 -mcmodel=small
ESMF_F90LINKOPTS          += -m64 -mcmodel=small
endif
ifeq ($(ESMF_ABISTRING),x86_64_medium)
ESMF_CXXCOMPILEOPTS       += -m64 -mcmodel=medium
ESMF_CXXLINKOPTS          += -m64 -mcmodel=medium
ESMF_F90COMPILEOPTS       += -m64 -mcmodel=medium
ESMF_F90LINKOPTS          += -m64 -mcmodel=medium
endif

############################################################
# Conditionally add pthread compiler and linker flags
#
ifeq ($(ESMF_PTHREADS),ON)
ESMF_F90COMPILEOPTS += -pthread
ESMF_CXXCOMPILEOPTS += -pthread
ESMF_F90LINKOPTS    += -pthread
ESMF_CXXLINKOPTS    += -pthread
endif

############################################################
# OpenMP compiler and linker flags
#
ESMF_OPENMP_F90COMPILEOPTS += -fopenmp
ESMF_OPENMP_CXXCOMPILEOPTS += -fopenmp
ESMF_OPENMP_F90LINKOPTS    += -fopenmp
ESMF_OPENMP_CXXLINKOPTS    += -fopenmp

############################################################
# Need this until the file convention is fixed (then remove these two lines)
#
ESMF_F90COMPILEFREENOCPP = -ffree-form
ESMF_F90COMPILEFIXCPP    = -cpp -ffixed-form

############################################################
# Set huge line length limit for free format files
#
ESMF_F90COMPILEOPTS += -ffree-line-length-huge

############################################################
# Blank out variables to prevent rpath encoding
#
ESMF_F90LINKRPATHS      =
ESMF_CXXLINKRPATHS      =

############################################################
# Determine where gcc's libraries are located
#
ESMF_LIBSTDCXX := $(shell $(ESMF_CXXCOMPILER) -print-file-name=libstdc++.dylib)
ifeq ($(ESMF_LIBSTDCXX),libstdc++.dylib)
ESMF_LIBSTDCXX := $(shell $(ESMF_CXXCOMPILER) -print-file-name=libstdc++.a)
endif
ESMF_F90LINKPATHS += -L$(dir $(ESMF_LIBSTDCXX))

############################################################
# Link against libesmf.a using the F90 linker front-end
#
ESMF_F90LINKLIBS += -lstdc++

############################################################
# Link against libesmf.a using the C++ linker front-end
#
# Explicitly specify libf95.a (instead of -lf95) since we are not providing 
# the g95 library path as a linker search path. Providing the g95 library path
# could potentially cause the linker to pick gcc system libs from g95's version
# of gcc rather than the actually used gcc version. The following approach
# avoids this.
ESMF_CXXLINKLIBS += $(shell $(ESMF_F90COMPILER) -print-file-name=libf95.a)

############################################################
# Blank out shared library options
#
ESMF_SL_LIBS_TO_MAKE  =