dnl pkg-config-based checks for Orc

dnl specific:

dnl ORC_CHECK([REQUIRED_VERSION])

AC_DEFUN([ORC_CHECK],

[

  ORC_REQ=ifelse([$1], , "0.4.6", [$1])

  AC_ARG_ENABLE(orc,

  AC_HELP_STRING([--enable-orc],[use Orc if installed]),

  [case "${enableval}" in

    auto) enable_orc=auto ;;

    yes) enable_orc=yes ;;

    no)  enable_orc=no ;;

    *) AC_MSG_ERROR(bad value ${enableval} for --enable-orc) ;;

  esac

  ],

  [enable_orc=auto]) dnl Default value

  if test "x$enable_orc" != "xno" ; then

    PKG_CHECK_MODULES(ORC, orc-0.4 >= $ORC_REQ, [

      AC_DEFINE(HAVE_ORC, 1, [Use Orc])

      HAVE_ORC=yes

      if test "x$ORCC" = "x" ; then

        AC_MSG_CHECKING(for usable orcc)

        ORCC=`$PKG_CONFIG --variable=orcc orc-0.4`

        dnl check whether the orcc found by pkg-config can be run from the build environment

        dnl if this is not the case (e.g. when cross-compiling) fall back to orcc from PATH

        AS_IF([$ORCC --version 1> /dev/null 2> /dev/null], [], [ORCC=`which orcc`])

        AC_MSG_RESULT($ORCC)

      fi

      AC_SUBST(ORCC)

      ORCC_FLAGS="--compat $ORC_REQ"

      AC_SUBST(ORCC_FLAGS)

      AS_IF([test "x$ORCC" = "x"], [HAVE_ORCC=no], [HAVE_ORCC=yes])

    ], [

      if test "x$enable_orc" = "xyes" ; then

        AC_MSG_ERROR([--enable-orc specified, but Orc >= $ORC_REQ not found])

      fi

      AC_DEFINE(DISABLE_ORC, 1, [Disable Orc])

      HAVE_ORC=no

      HAVE_ORCC=no

    ])

  else

    AC_DEFINE(DISABLE_ORC, 1, [Disable Orc])

    HAVE_ORC=no

    HAVE_ORCC=no

  fi

  AM_CONDITIONAL(HAVE_ORC, [test "x$HAVE_ORC" = "xyes"])

  AM_CONDITIONAL(HAVE_ORCC, [test "x$HAVE_ORCC" = "xyes"])

]))

AC_DEFUN([ORC_OUTPUT],

[

  if test "$HAVE_ORC" = yes ; then

    printf "configure: *** Orc acceleration enabled.\n"

  else

    if test "x$enable_orc" = "xno" ; then

      printf "configure: *** Orc acceleration disabled by --disable-orc.  Slower code paths\n"

      printf "               will be used.\n"

    else

      printf "configure: *** Orc acceleration disabled.  Requires Orc >= $ORC_REQ, which was\n"

      printf "               not found.  Slower code paths will be used.\n"

    fi

  fi

  printf "\n"

])