configure.ac

# Info

AC_INIT([rt],[version-1.0])

# Docstring for options

AC_ARG_ENABLE(profiling, [  --enable-profiling      Enables the profiling flags])
AC_ARG_ENABLE(debug, [  --enable-debug          Enables the full debugging flags])
AC_ARG_ENABLE(static, [  --enable-static         Enables static compilation])
AC_ARG_VAR(HYPERION_HDF5_VERSION, [By default, we assume that HDF5 1.10 is being used. This environment variable can be set to 18 or 110 to explicitly request compatibility with HDF5 1.8.x and 1.10.x respectively.])

# Static flags

if test "$enable_static" == "yes"
then
  static_ifort='--static'
  static_nag=''
  static_gfortran=''
  static_g95=''
  static_pgi='-Bstatic'
else
  static_ifort=''
  static_nag=''
  static_gfortran=''
  static_g95=''
  static_pgi=''
fi

# Profiling flags

if test "$enable_profiling" == "yes"
then
  profiling_ifort='-g -save-temps'
  profiling_nag=''
  profiling_gfortran=''
  profiling_g95=''
  profiling_pgi=''
else
  profiling_ifort=''
  profiling_nag=''
  profiling_gfortran=''
  profiling_g95=''
  profiling_pgi=''
fi

# Debugging flags

if test "$enable_debug" == "yes"
then
  debug_nag='-C=all -gline -nan'
  debug_ifort='-check all -warn all -warn nodec -warn interfaces -gen_interfaces -traceback -g'
  debug_gfortran='-Wall -fbounds-check -g'
  debug_g95='-Wall -fbounds-check -g'
  debug_pgi='-Mbounds -traceback -g'
else
  debug_nag=''
  debug_ifort=''
  debug_gfortran=''
  debug_g95=''
  debug_pgi=''
fi

extra_nag="-Isrc/modules -mdir src/modules -f2003 -colour -ieee=full $debug_nag $profiling_nag $static_nag"
extra_ifort="-module src/modules -heap-arrays -error-limit 1 -fp-model strict -diag-disable 8291 $debug_ifort $profiling_ifort $static_ifort"
extra_gfortran="-Jsrc/modules -Isrc/modules -g -ffree-line-length-none $debug_gfortran $profiling_gfortran $static_gfortran"
extra_g95="-fmod=src/modules -Isrc/modules -g -ffree-line-length-huge $debug_g95 $profiling_g95 $static_g95"
extra_pgi="$debug_pgi $profiling_pgi $static_pgi"

# SERIAL CODE

AC_CHECK_PROGS(hdf_compiler, [h5fc h5pfc], none)

if test "$hdf_compiler" == none
then
  AC_MSG_ERROR("The HDF5 library with support for Fortran needs to be installed")
else
  AC_SUBST(serial_fc, "$hdf_compiler")
fi

# Find out what compiler is buried under the HDF5 wrapper
# and remove any leading path from the compiler
if test "$hdf_compiler" == "h5fc"
then
  hdf_compiler=`basename $(h5fc -show | awk {'print $1'})`
else
  hdf_compiler=`basename $(h5pfc -show | awk {'print $1'})`
  if test "$hdf_compiler" == "mpif90"
  then
    hdf_compiler=`basename $(mpif90 -show | awk {'print $1'})`
  elif test "$hdf_compiler" == "mpifort"
  then
    hdf_compiler=`basename $(mpifort -show | awk {'print $1'})`
  fi
fi

# gfortran sometimes includes version number and/or platform info
# (e.g., x86_64-pc-linux-gnu-gfortran-4.8.2), so check whether this is the case
hdf_compiler_short=`echo $hdf_compiler | sed s/'.*gfortran.*'/gfortran/`
if test "$hdf_compiler_short" == gfortran
then
  hdf_compiler=gfortran
fi

if test "$hdf_compiler" == f95
then
  AC_SUBST(posix_module_serial, posix_nag)
  AC_SUBST(extra_serial, "$extra_nag")
elif test "$hdf_compiler" == nagfor
then
  AC_SUBST(posix_module_serial, posix_nag)
  AC_SUBST(extra_serial, "$extra_nag")
elif test "$hdf_compiler" == pgf90
then
  AC_SUBST(posix_module_serial, posix_default)
  AC_SUBST(extra_serial, "$extra_pgi")
elif test "$hdf_compiler" == pgf95
then
  AC_SUBST(posix_module_serial, posix_default)
  AC_SUBST(extra_serial, "$extra_pgi")
elif test "$hdf_compiler" == pgfortran
then
  AC_SUBST(posix_module_serial, posix_default)
  AC_SUBST(extra_serial, "$extra_pgi")
elif test "$hdf_compiler" == ifort
then
  AC_SUBST(posix_module_serial, posix_default)
  AC_SUBST(extra_serial, "$extra_ifort")
elif test "$hdf_compiler" == gfortran
then
  AC_SUBST(posix_module_serial, posix_default)
  AC_SUBST(extra_serial, "$extra_gfortran")
elif test "$hdf_compiler" == g95
then
  AC_SUBST(posix_module_serial, posix_default)
  AC_SUBST(extra_serial, "$extra_g95")
else
  AC_MSG_ERROR([Could not determine HDF5 compiler: $hdf_compiler])
fi

if test -z "$HYPERION_HDF5_VERSION"; then
  HYPERION_HDF5_VERSION=110
elif test "$HYPERION_HDF5_VERSION" == 18; then
  : # nothing to do
elif test "$HYPERION_HDF5_VERSION" == 110; then
  : # nothing to do
else
  AC_MSG_ERROR([HYPERION_HDF5_VERSION should be 18 or 110])
fi

# MPI CODE

# First find out if we can use h5pfc
AC_CHECK_PROGS(parallel_compiler, [h5pfc mpif90])

# Find out what compiler is buried under the MPI wrapper
# and remove any leading path from the compiler
if test "$parallel_compiler" == h5pfc
then
  mpi_compiler=`basename $(h5pfc -show | awk {'print $1'})`
  if test "$mpi_compiler" == mpif90
  then
    mpi_compiler=`basename $(mpif90 -show | awk {'print $1'})`
  elif test "$mpi_compiler" == mpifort
  then
    mpi_compiler=`basename $(mpifort -show | awk {'print $1'})`
  fi
  AC_SUBST(mpi_fc, 'h5pfc')
elif test "$parallel_compiler" == mpif90
then
  mpi_compiler=`basename $(mpif90 -show | awk {'print $1'})`
  AC_SUBST(mpi_fc, 'HDF5_FLINKER=mpif90 HDF5_FC=mpif90 h5fc')
elif test "$parallel_compiler" == mpifort
then
  mpi_compiler=`basename $(mpifort -show | awk {'print $1'})`
  AC_SUBST(mpi_fc, 'HDF5_FLINKER=mpifort HDF5_FC=mpifort h5fc')
else
  AC_MSG_ERROR("h5pfc or mpif90 need to be present")
fi

# gfortran sometimes includes version number and/or platform info
# (e.g., x86_64-pc-linux-gnu-gfortran-4.8.2), so check whether this is the case
mpi_compiler_short=`echo $mpi_compiler | sed s/'.*gfortran.*'/gfortran/`
if test "$mpi_compiler_short" == gfortran
then
  mpi_compiler=gfortran
fi

if test "$mpi_compiler" == f95
then
  AC_SUBST(posix_module_mpi, posix_nag)
  AC_SUBST(extra_mpi, "$extra_nag")
elif test "$mpi_compiler" == nagfor
then
  AC_SUBST(posix_module_mpi, posix_nag)
  AC_SUBST(extra_mpi, "$extra_nag")
elif test "$mpi_compiler" == pgf90
then
  AC_SUBST(posix_module_mpi, posix_default)
  AC_SUBST(extra_mpi, "$extra_pgi")
elif test "$mpi_compiler" == pgf95
then
  AC_SUBST(posix_module_mpi, posix_default)
  AC_SUBST(extra_mpi, "$extra_pgi")
elif test "$mpi_compiler" == pgfortran
then
  AC_SUBST(posix_module_mpi, posix_default)
  AC_SUBST(extra_mpi, "$extra_pgi")
elif test "$mpi_compiler" == ifort
then
  AC_SUBST(posix_module_mpi, posix_default)
  AC_SUBST(extra_mpi, "$extra_ifort")
elif test "$mpi_compiler" == gfortran
then
  AC_SUBST(posix_module_mpi, posix_default)
  AC_SUBST(extra_mpi, "$extra_gfortran")
elif test "$mpi_compiler" == g95
then
  AC_SUBST(posix_module_mpi, posix_default)
  AC_SUBST(extra_mpi, "$extra_g95")
else
  AC_MSG_ERROR([Could not determine MPI compiler: $mpi_compiler])
fi

# Output final Makefile

AC_CONFIG_FILES([Makefile])
AC_OUTPUT