dnl -*- shell-script -*-
dnl
dnl Copyright (c) 2013      Mellanox Technologies, Inc.
dnl                         All rights reserved.
dnl Copyright (c) 2013-2014 Cisco Systems, Inc.  All rights reserved.
dnl Copyright (c) 2014      Intel, Inc. All rights reserved
dnl Copyright (c) 2014-2015 Research Organization for Information Science
dnl                         and Technology (RIST). All rights reserved.
dnl Copyright (c) 2018      Amazon.com, Inc. or its affiliates.
dnl                         All Rights reserved.
dnl $COPYRIGHT$
dnl
dnl Additional copyrights may follow
dnl
dnl $HEADER$
dnl

AC_DEFUN([OSHMEM_CONFIGURE_OPTIONS],[
opal_show_subtitle "OpenSHMEM Configuration options"

AC_SUBST(OSHMEM_LIBSHMEM_EXTRA_LIBS)
AC_SUBST(OSHMEM_LIBSHMEM_EXTRA_LDFLAGS)

#
# Disable Open SHMEM?
#
AC_MSG_CHECKING([if want OpenSHMEM])
AC_ARG_ENABLE([oshmem],
              [AS_HELP_STRING([--enable-oshmem],
                              [Enable building the OpenSHMEM interface (available on Linux only, where it is enabled by default)])])

if test "$enable_oshmem" = "no"; then
    AC_MSG_RESULT([no])
elif test "$enable_oshmem" = ""; then
    case $host_os in
    linux*)
        AC_MSG_RESULT([yes])
        ;;
    *)
        enable_oshmem=no
        AC_MSG_RESULT([not supported on this platform])
        ;;
    esac
else
    AC_MSG_RESULT([yes])
    case $host_os in
    linux*)
        ;;
    *)
        AC_MSG_WARN([OpenSHMEM support was requested, but currently])
        AC_MSG_WARN([only supports Linux.])
        AC_MSG_ERROR([Cannot continue])
        ;;
    esac
fi

#
# Enable compatibility mode
#
AC_MSG_CHECKING([if want SGI/Quadrics compatibility mode])
AC_ARG_ENABLE([oshmem-compat],
        [AS_HELP_STRING([--enable-oshmem-compat],
            [enable compatibility mode (default: enabled)])])
if test "$enable_oshmem_compat" != "no"; then
    AC_MSG_RESULT([yes])
    OSHMEM_SPEC_COMPAT=1
else
    AC_MSG_RESULT([no])
    OSHMEM_SPEC_COMPAT=0
fi
AC_DEFINE_UNQUOTED([OSHMEM_SPEC_COMPAT], [$OSHMEM_SPEC_COMPAT],
                   [Whether user wants OSHMEM in compatibility mode or not])



#
# Do we want to disable OSHMEM parameter checking at run-time?
#
AC_MSG_CHECKING([if want OpenSHMEM API parameter checking])
AC_ARG_WITH([oshmem-param-check],
    [AS_HELP_STRING([--with-oshmem-param-check(=VALUE)],
                   [behavior of OSHMEM API function parameter checking.  Valid values are: always, never.  If --with-oshmem-param-check is specified with no VALUE argument, it is equivalent to a VALUE of "always"; --without-oshmem-param-check is equivalent to "never" (default: always).])])
if test "$with_oshmem_param_check" = "no" || \
        test "$with_oshmem_param_check" = "never"; then
    shmem_param_check=0
    AC_MSG_RESULT([never])
elif test "$with_oshmem_param_check" = "yes" || \
        test "$with_oshmem_param_check" = "always" || \
        test -z "$with_oshmem_param_check"; then
    shmem_param_check=1
    AC_MSG_RESULT([always])
else
    shmem_param_check=1
    AC_MSG_RESULT([unknown])
    AC_MSG_WARN([*** Unrecognized --with-oshmem-param-check value])
    AC_MSG_WARN([*** See "configure --help" output])
    AC_MSG_WARN([*** Defaulting to "always"])
fi
AC_DEFINE_UNQUOTED(OSHMEM_PARAM_CHECK, $shmem_param_check,
    [Whether we want to check OSHMEM parameters always or never])

#
#  OSHMEM profiling support
#
AC_ARG_ENABLE([oshmem-profile],
    [AS_HELP_STRING([--enable-oshmem-profile],
                   [enable OpenSHMEM profiling (default: enabled)])])
AC_MSG_CHECKING([if want pshmem])
AS_IF([test "$enable_oshmem_profile" != "no"],
      [AC_MSG_RESULT([yes])],
      [AC_MSG_RESULT([no])])

# Bozo check
AS_IF([test "$enable_oshmem" = "no" && \
       test "$enable_oshmem_profile" = "yes"],
      [AC_MSG_WARN([OpenSHMEM profiling was requested, but OpenSHMEM has been explicitly disabled])
       AC_MSG_ERROR([Cannot continue])])

# Cannot check if we can enable profiling because it is not yet
# known whether the compiler supports weak symbols.


#
# Fortran bindings
#
AC_MSG_CHECKING([if want to build OpenSHMEM fortran bindings])
AC_ARG_ENABLE([oshmem-fortran],
AS_HELP_STRING([--enable-oshmem-fortran],
               [enable OpenSHMEM Fortran bindings (default: enabled if Fortran compiler found)]))
if test "$enable_oshmem_fortran" != "no"; then
# If no OMPI FORTRAN, bail
   AS_IF([test $OMPI_TRY_FORTRAN_BINDINGS -eq $OMPI_FORTRAN_NO_BINDINGS && \
          test "$enable_oshmem_fortran" = "yes"],
               [AC_MSG_RESULT([bad value OMPI_TRY_FORTRAN_BINDINGS: ($OMPI_TRY_FORTRAN_BINDINGS)])
                AC_MSG_WARN([Your request to --enable-oshmem-fortran can only be satisfied if fortran support is enabled in OMPI.
You see this message because MPI fortran support has been explicitly disabled via --disable-mpi-fortran and OpenSHMEM fortran support was explicitly enabled with --enable-oshmem-fortran.
Configure will abort because you, a human, have asked for something that cannot be provided.])
                AC_MSG_ERROR([Cannot continue])])
    if test $OMPI_TRY_FORTRAN_BINDINGS -gt $OMPI_FORTRAN_NO_BINDINGS; then
        AC_MSG_RESULT([yes])
    else
        AC_MSG_RESULT([no])
    fi
else
    enable_oshmem_fortran=no
    AC_MSG_RESULT([no])
fi

#
# We can't set am_conditional here since it's yet unknown if there is
# valid Fortran compiler available
#

]) dnl