dnl -*- shell-script -*-
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# OPAL_CHECK_PORTALS4(prefix, [action-if-found], [action-if-not-found])
# --------------------------------------------------------
# check if PORTALS4 support can be found.  sets prefix_{CPPFLAGS,
# LDFLAGS, LIBS} as needed and runs action-if-found if there is
# support, otherwise executes action-if-not-found
AC_DEFUN([OPAL_CHECK_PORTALS4],[
    OPAL_VAR_SCOPE_PUSH([ompi_check_portals4_happy max_md_size max_va_size])

    AC_ARG_WITH([portals4],
                [AS_HELP_STRING([--with-portals4(=DIR)],
                                [Build Portals4 support, optionally adding DIR/include, DIR/lib, and DIR/lib64 to the search path for headers and libraries])])
    AC_ARG_WITH([portals4-libdir],
                [AS_HELP_STRING([--with-portals4-libdir=DIR],
                                [Search for Portals4 libraries in DIR])])

    OAC_CHECK_PACKAGE([portals4],
                      [$1],
                      [portals4.h],
                      [portals],
                      [PtlLEAppend],
                      [ompi_check_portals4_happy="yes"],
                      [ompi_check_portals4_happy="no"])

    max_md_size=0
    AC_ARG_WITH([portals4-max-md-size],
                [AS_HELP_STRING([--with-portals4-max-md-size=SIZE],
                                [Log base 2 of the maximum size in bytes of a memory descriptor.  Should only be set for implementations which do not support binding all of virtual address space.])])
    AS_IF([test "$with_portals4_max_md_size" = "yes" || test "$with_portals4_max_md_size" = "no"],
          [AC_MSG_ERROR([--with-portals4-max-md-size requires an integer argument])],
          [AS_IF([test -n "$with_portals4_max_md_size"],
                 [max_md_size="$with_portals4_max_md_size"])])
    AC_DEFINE_UNQUOTED([OPAL_PORTALS4_MAX_MD_SIZE], [$max_md_size],
                       [Log base 2 of the maximum size in bytes of a memory descriptor.  Set to 0 if MD can bind all of memory.])

    max_va_size=0
    AC_ARG_WITH([portals4-max-va-size],
                [AS_HELP_STRING([--with-portals4-max-va-size=SIZE],
                                [Log base 2 of the maximum size in bytes of the user virtual address space.  Should only be set for implementations which do not support binding all of virtual address space.])])
    AS_IF([test "$with_portals4_max_va_size" = "yes" || test "$with_portals4_max_va_size" = "no"],
          [AC_MSG_ERROR([--with-portals4-max-va-size requires an integer argument])],
          [AS_IF([test -n "$with_portals4_max_va_size"],
                 [max_va_size="$with_portals4_max_va_size"])])
    AC_DEFINE_UNQUOTED([OPAL_PORTALS4_MAX_VA_SIZE], [$max_va_size],
                       [Log base 2 of the maximum size in bytes of the user virtual address space.  Set to 0 if MD can bind all of memory.])

    AS_IF([(test $max_md_size -eq 0 && test $max_va_size -ne 0 ) || (test $max_md_size -ne 0 && test $max_va_size -eq 0 )],
          [AC_MSG_ERROR([If either --with-portals4-max-md-size or --with-portals4-max-va-size is set, both must be set.])])
    AS_IF([test $max_md_size -ge $max_va_size],
          [max_md_size=0
           max_va_size=0])
    AS_IF([test $max_md_size -ne 0 && test $max_va_size -ne 0],
          [AC_MSG_NOTICE([Portals 4 address space size: $max_md_size, $max_va_size])])

    OPAL_SUMMARY_ADD([Transports], [Portals4], [], [${$1_SUMMARY}])

    AS_IF([test "$ompi_check_portals4_happy" = "yes"],
          [$2],
          [AS_IF([test ! -z "$with_portals4" && test "$with_portals4" != "no"],
                 [AC_MSG_ERROR([Portals4 support requested but not found.  Aborting])])
           $3])

    OPAL_VAR_SCOPE_POP
])dnl