# All valid JVM features, regardless of platform

VALID_JVM_FEATURES="compiler1 compiler2 zero shark minimal dtrace jvmti jvmci \

    fprof vm-structs jni-check services management all-gcs nmt cds static-build"

# All valid JVM variants

VALID_JVM_VARIANTS="server client minimal core zero zeroshark custom"

###############################################################################

# Check if the specified JVM variant should be built. To be used in shell if

# constructs, like this:

# if HOTSPOT_CHECK_JVM_VARIANT(server); then

#

# Only valid to use after HOTSPOT_SETUP_JVM_VARIANTS has setup variants.

# Definition kept in one line to allow inlining in if statements.

# Additional [] needed to keep m4 from mangling shell constructs.

AC_DEFUN([HOTSPOT_CHECK_JVM_VARIANT],

[ [ [[ " $JVM_VARIANTS " =~ " $1 " ]] ] ])

# Check if the specified JVM features are explicitly enabled. To be used in

# shell if constructs, like this:

# if HOTSPOT_CHECK_JVM_FEATURE(jvmti); then

#

# Only valid to use after HOTSPOT_SETUP_JVM_FEATURES has setup features.

# Definition kept in one line to allow inlining in if statements.

# Additional [] needed to keep m4 from mangling shell constructs.

AC_DEFUN([HOTSPOT_CHECK_JVM_FEATURE],

[ [ [[ " $JVM_FEATURES " =~ " $1 " ]] ] ])

###############################################################################

# Check which variants of the JVM that we want to build. Available variants are:

#   server: normal interpreter, and a tiered C1/C2 compiler

#   client: normal interpreter, and C1 (no C2 compiler)

#   minimal: reduced form of client with optional features stripped out

#   core: normal interpreter only, no compiler

#   zero: C++ based interpreter only, no compiler

#   zeroshark: C++ based interpreter, and a llvm-based compiler

#   custom: baseline JVM with no default features

#

      [JVM variants (separated by commas) to build (server,client,minimal,core,zero,zeroshark,custom) @<:@server@:>@])])

  JVM_VARIANTS_OPT="$with_jvm_variants"

  # Has the user listed more than one variant?

  # Additional [] needed to keep m4 from mangling shell constructs.

  if [ [[ "$JVM_VARIANTS_OPT" =~ "," ]] ]; then

    BUILDING_MULTIPLE_JVM_VARIANTS=true

  else

    BUILDING_MULTIPLE_JVM_VARIANTS=false

  fi

  # Replace the commas with AND for use in the build directory name.

  JVM_VARIANTS_WITH_AND=`$ECHO "$JVM_VARIANTS_OPT" | $SED -e 's/,/AND/g'`

  AC_MSG_CHECKING([which variants of the JVM to build])

  # JVM_VARIANTS is a space-separated list.

  # Also use minimal, not minimal1 (which is kept for backwards compatibility).

  JVM_VARIANTS=`$ECHO $JVM_VARIANTS_OPT | $SED -e 's/,/ /g' -e 's/minimal1/minimal/'`

  AC_MSG_RESULT([$JVM_VARIANTS])

  # Check that the selected variants are valid

  # grep filter function inspired by a comment to http://stackoverflow.com/a/1617326

  INVALID_VARIANTS=`$GREP -Fvx "${VALID_JVM_VARIANTS// /$'\n'}" <<< "${JVM_VARIANTS// /$'\n'}"`

  if test "x$INVALID_VARIANTS" != x; then

    AC_MSG_NOTICE([Unknown variant(s) specified: $INVALID_VARIANTS])

    AC_MSG_ERROR([The available JVM variants are: $VALID_JVM_VARIANTS])

  fi

  # All "special" variants share the same output directory ("server")

  VALID_MULTIPLE_JVM_VARIANTS="server client minimal"

  INVALID_MULTIPLE_VARIANTS=`$GREP -Fvx "${VALID_MULTIPLE_JVM_VARIANTS// /$'\n'}" <<< "${JVM_VARIANTS// /$'\n'}"`

  if  test "x$INVALID_MULTIPLE_VARIANTS" != x && test "x$BUILDING_MULTIPLE_JVM_VARIANTS" = xtrue; then

    AC_MSG_ERROR([You cannot build multiple variants with anything else than $VALID_MULTIPLE_JVM_VARIANTS.])

  fi

  AC_SUBST(JVM_VARIANTS)

  AC_SUBST(VALID_JVM_VARIANTS)

  if HOTSPOT_CHECK_JVM_VARIANT(zero) || HOTSPOT_CHECK_JVM_VARIANT(zeroshark); then

    # zero behaves as a platform and rewrites these values. This is really weird. :(

    # We are guaranteed that we do not build any other variants when building zero.

    HOTSPOT_TARGET_CPU=zero

    HOTSPOT_TARGET_CPU_ARCH=zero

])

###############################################################################

# Check if dtrace should be enabled and has all prerequisites present.

#

AC_DEFUN_ONCE([HOTSPOT_SETUP_DTRACE],

[

  # Test for dtrace dependencies

  AC_ARG_ENABLE([dtrace], [AS_HELP_STRING([--enable-dtrace@<:@=yes/no/auto@:>@],

      [enable dtrace. Default is auto, where dtrace is enabled if all dependencies

      are present.])])

  DTRACE_DEP_MISSING=false

  AC_MSG_CHECKING([for dtrace tool])

  if test "x$DTRACE" != "x" && test -x "$DTRACE"; then

    AC_MSG_RESULT([$DTRACE])

  else

    AC_MSG_RESULT([not found, cannot build dtrace])

    DTRACE_DEP_MISSING=true

  fi

  AC_CHECK_HEADERS([sys/sdt.h], [DTRACE_HEADERS_OK=yes],[DTRACE_HEADERS_OK=no])

  if test "x$DTRACE_HEADERS_OK" != "xyes"; then

    DTRACE_DEP_MISSING=true

  fi

  AC_MSG_CHECKING([if dtrace should be built])

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

    if test "x$DTRACE_DEP_MISSING" = "xtrue"; then

      AC_MSG_RESULT([no, missing dependencies])

      HELP_MSG_MISSING_DEPENDENCY([dtrace])

      AC_MSG_ERROR([Cannot enable dtrace with missing dependencies. See above. $HELP_MSG])

    else

      INCLUDE_DTRACE=true

      AC_MSG_RESULT([yes, forced])

    fi

  elif test "x$enable_dtrace" = "xno"; then

    INCLUDE_DTRACE=false

    AC_MSG_RESULT([no, forced])

  elif test "x$enable_dtrace" = "xauto" || test "x$enable_dtrace" = "x"; then

    if test "x$OPENJDK_TARGET_OS" = "xlinux" && test "x$OPENJDK" != "xtrue"; then

      INCLUDE_DTRACE=false

      AC_MSG_RESULT([no, non-open linux build])

    elif test "x$DTRACE_DEP_MISSING" = "xtrue"; then

      INCLUDE_DTRACE=false

      AC_MSG_RESULT([no, missing dependencies])

    else

      INCLUDE_DTRACE=true

      AC_MSG_RESULT([yes, dependencies present])

    fi

  else

    AC_MSG_ERROR([Invalid value for --enable-dtrace: $enable_dtrace])

  fi

  AC_SUBST(INCLUDE_DTRACE)

])

###############################################################################

# Set up all JVM features for each JVM variant.

#

AC_DEFUN_ONCE([HOTSPOT_SETUP_JVM_FEATURES],

[

  # The user can in some cases supply additional jvm features. For the custom

  # variant, this defines the entire variant.

  AC_ARG_WITH([jvm-features], [AS_HELP_STRING([--with-jvm-features],

      [additional JVM features to enable (separated by comma),  use '--help' to show possible values @<:@none@:>@])])

  if test "x$with_jvm_features" != x; then

    AC_MSG_CHECKING([additional JVM features])

    JVM_FEATURES=`$ECHO $with_jvm_features | $SED -e 's/,/ /g'`

    AC_MSG_RESULT([$JVM_FEATURES])

  fi

  # Verify that dependencies are met for explicitly set features.

  if HOTSPOT_CHECK_JVM_FEATURE(jvmti) && ! HOTSPOT_CHECK_JVM_FEATURE(services); then

    AC_MSG_ERROR([Specified JVM feature 'jvmti' requires feature 'services'])

  if HOTSPOT_CHECK_JVM_FEATURE(management) && ! HOTSPOT_CHECK_JVM_FEATURE(nmt); then

    AC_MSG_ERROR([Specified JVM feature 'management' requires feature 'nmt'])

  fi

  if HOTSPOT_CHECK_JVM_FEATURE(jvmci) && ! HOTSPOT_CHECK_JVM_FEATURE(compiler2); then

    AC_MSG_ERROR([Specified JVM feature 'jvmci' requires feature 'compiler2'])

  fi

  if HOTSPOT_CHECK_JVM_FEATURE(compiler2) && ! HOTSPOT_CHECK_JVM_FEATURE(all-gcs); then

    AC_MSG_ERROR([Specified JVM feature 'compiler2' requires feature 'all-gcs'])

  fi

  if HOTSPOT_CHECK_JVM_FEATURE(vm-structs) && ! HOTSPOT_CHECK_JVM_FEATURE(all-gcs); then

    AC_MSG_ERROR([Specified JVM feature 'vm-structs' requires feature 'all-gcs'])

  fi

  # Turn on additional features based on other parts of configure

  if test "x$INCLUDE_DTRACE" = "xtrue"; then

    JVM_FEATURES="$JVM_FEATURES dtrace"

  else

    if HOTSPOT_CHECK_JVM_FEATURE(dtrace); then

      AC_MSG_ERROR([To enable dtrace, you must use --enable-dtrace])

  if test "x$STATIC_BUILD" = "xtrue"; then

    JVM_FEATURES="$JVM_FEATURES static-build"

    if HOTSPOT_CHECK_JVM_FEATURE(static-build); then

      AC_MSG_ERROR([To enable static-build, you must use --enable-static-build])

    fi

  fi

  if ! HOTSPOT_CHECK_JVM_VARIANT(zero) && ! HOTSPOT_CHECK_JVM_VARIANT(zeroshark); then

    if HOTSPOT_CHECK_JVM_FEATURE(zero); then

      AC_MSG_ERROR([To enable zero/zeroshark, you must use --with-jvm-variants=zero/zeroshark])

    fi

  fi

  if ! HOTSPOT_CHECK_JVM_VARIANT(zeroshark); then

    if HOTSPOT_CHECK_JVM_FEATURE(shark); then

      AC_MSG_ERROR([To enable shark, you must use --with-jvm-variants=zeroshark])

    fi

  fi

  # Only enable jvmci on x86_64, sparcv9 and aarch64, and only on server.

  if test "x$OPENJDK_TARGET_CPU" = "xx86_64" || \

      test "x$OPENJDK_TARGET_CPU" = "xsparcv9" || \

      test "x$OPENJDK_TARGET_CPU" = "xaarch64" ; then

    JVM_FEATURES_jvmci="jvmci"

  else

    JVM_FEATURES_jvmci=""

  # All variants but minimal (and custom) get these features

  NON_MINIMAL_FEATURES="$NON_MINIMAL_FEATURES jvmti fprof vm-structs jni-check services management all-gcs nmt cds"

  # Enable features depending on variant.

  JVM_FEATURES_server="compiler1 compiler2 $NON_MINIMAL_FEATURES $JVM_FEATURES $JVM_FEATURES_jvmci"

  JVM_FEATURES_client="compiler1 $NON_MINIMAL_FEATURES $JVM_FEATURES"

  JVM_FEATURES_core="$NON_MINIMAL_FEATURES $JVM_FEATURES"

  JVM_FEATURES_minimal="compiler1 minimal $JVM_FEATURES"

  JVM_FEATURES_zero="zero $NON_MINIMAL_FEATURES $JVM_FEATURES"

  JVM_FEATURES_zeroshark="zero shark $NON_MINIMAL_FEATURES $JVM_FEATURES"

  JVM_FEATURES_custom="$JVM_FEATURES"

  AC_SUBST(JVM_FEATURES_server)

  AC_SUBST(JVM_FEATURES_client)

  AC_SUBST(JVM_FEATURES_core)

  AC_SUBST(JVM_FEATURES_minimal)

  AC_SUBST(JVM_FEATURES_zero)

  AC_SUBST(JVM_FEATURES_zeroshark)

  AC_SUBST(JVM_FEATURES_custom)

  # Used for verification of Makefiles by check-jvm-feature

  AC_SUBST(VALID_JVM_FEATURES)

  # We don't support --with-jvm-interpreter anymore, use zero instead.

  BASIC_DEPRECATED_ARG_WITH(jvm-interpreter)

])

###############################################################################

# Validate JVM features once all setup is complete, including custom setup.

#

AC_DEFUN_ONCE([HOTSPOT_VALIDATE_JVM_FEATURES],

[

  # Keep feature lists sorted and free of duplicates

  JVM_FEATURES_server="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_server | $SORT -u))"

  JVM_FEATURES_client="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_client | $SORT -u))"

  JVM_FEATURES_core="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_core | $SORT -u))"

  JVM_FEATURES_minimal="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_minimal | $SORT -u))"

  JVM_FEATURES_zero="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_zero | $SORT -u))"

  JVM_FEATURES_zeroshark="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_zeroshark | $SORT -u))"

  JVM_FEATURES_custom="$($ECHO $($PRINTF '%s\n' $JVM_FEATURES_custom | $SORT -u))"

  # Validate features

  for variant in $JVM_VARIANTS; do

    AC_MSG_CHECKING([JVM features for JVM variant '$variant'])

    features_var_name=JVM_FEATURES_$variant

    JVM_FEATURES_TO_TEST=${!features_var_name}

    AC_MSG_RESULT([$JVM_FEATURES_TO_TEST])

    INVALID_FEATURES=`$GREP -Fvx "${VALID_JVM_FEATURES// /$'\n'}" <<< "${JVM_FEATURES_TO_TEST// /$'\n'}"`

    if test "x$INVALID_FEATURES" != x; then

      AC_MSG_ERROR([Invalid JVM feature(s): $INVALID_FEATURES])

    fi

  done

])

###############################################################################

# Support for old hotspot build. Remove once new hotspot build has proven

# to work satisfactory.

#

AC_DEFUN_ONCE([HOTSPOT_SETUP_LEGACY_BUILD],

[

  AC_ARG_ENABLE(new-hotspot-build, [AS_HELP_STRING([--disable-new-hotspot-build],

      [disable the new hotspot build system (use the old) @<:@enabled@:>@])])

   if test "x$enable_new_hotspot_build" = "x" || test "x$enable_new_hotspot_build" = "xyes"; then

     USE_NEW_HOTSPOT_BUILD=true

   else

     USE_NEW_HOTSPOT_BUILD=false

   fi

  AC_SUBST(USE_NEW_HOTSPOT_BUILD)

  case $HOTSPOT_DEBUG_LEVEL in

    product )

      VARIANT="OPT"

      FASTDEBUG="false"

      DEBUG_CLASSFILES="false"

      ;;

    fastdebug )

      VARIANT="DBG"

      FASTDEBUG="true"

      DEBUG_CLASSFILES="true"

      ;;

    debug )

      VARIANT="DBG"

      FASTDEBUG="false"

      DEBUG_CLASSFILES="true"

      ;;

    optimized )

      VARIANT="OPT"

      FASTDEBUG="false"

      DEBUG_CLASSFILES="false"

      ;;

  esac

  AC_SUBST(VARIANT)

  AC_SUBST(FASTDEBUG)

  AC_SUBST(DEBUG_CLASSFILES)

  # Make sure JVM_VARIANTS_COMMA use minimal1 for backwards compatibility

  JVM_VARIANTS_COMMA=`$ECHO ,$JVM_VARIANTS_OPT, | $SED -e 's/,minimal,/,minimal1,/'`

  JVM_VARIANT_SERVER=`$ECHO "$JVM_VARIANTS_COMMA" | $SED -e '/,server,/!s/.*/false/g' -e '/,server,/s/.*/true/g'`

  JVM_VARIANT_CLIENT=`$ECHO "$JVM_VARIANTS_COMMA" | $SED -e '/,client,/!s/.*/false/g' -e '/,client,/s/.*/true/g'`

  JVM_VARIANT_MINIMAL1=`$ECHO "$JVM_VARIANTS_COMMA" | $SED -e '/,minimal1\?,/!s/.*/false/g' -e '/,minimal1\?,/s/.*/true/g'`

  JVM_VARIANT_CORE=`$ECHO "$JVM_VARIANTS_COMMA" | $SED -e '/,core,/!s/.*/false/g' -e '/,core,/s/.*/true/g'`

  JVM_VARIANT_ZERO=`$ECHO "$JVM_VARIANTS_COMMA" | $SED -e '/,zero,/!s/.*/false/g' -e '/,zero,/s/.*/true/g'`

  JVM_VARIANT_ZEROSHARK=`$ECHO "$JVM_VARIANTS_COMMA" | $SED -e '/,zeroshark,/!s/.*/false/g' -e '/,zeroshark,/s/.*/true/g'`

  JVM_VARIANT_CUSTOM=`$ECHO "$JVM_VARIANTS_COMMA" | $SED -e '/,custom,/!s/.*/false/g' -e '/,custom,/s/.*/true/g'`

  HOTSPOT_TARGET="$HOTSPOT_TARGET docs export_$HOTSPOT_DEBUG_LEVEL"

    HOTSPOT_TARGET=universal_${HOTSPOT_DEBUG_LEVEL}

  HOTSPOT_MAKE_ARGS="$HOTSPOT_TARGET"

  AC_SUBST(HOTSPOT_MAKE_ARGS)

  if test "x$USE_NEW_HOTSPOT_BUILD" = xfalse; then

    if test "x$JVM_VARIANT_CLIENT" = xtrue; then

      if test "x$OPENJDK_TARGET_CPU_BITS" = x64; then

        AC_MSG_ERROR([You cannot build a client JVM for a 64-bit machine.])

      fi

    fi

    if test "x$JVM_VARIANT_MINIMAL1" = xtrue; then

      if test "x$OPENJDK_TARGET_CPU_BITS" = x64; then

        AC_MSG_ERROR([You cannot build a minimal JVM for a 64-bit machine.])

      fi

    fi

    if test "x$JVM_VARIANT_CUSTOM" = xtrue; then

        AC_MSG_ERROR([You cannot build a custom JVM using the old hotspot build system.])

    fi

  fi

  AC_SUBST(JVM_VARIANTS_COMMA)

  AC_SUBST(JVM_VARIANT_SERVER)

  AC_SUBST(JVM_VARIANT_CLIENT)

  AC_SUBST(JVM_VARIANT_MINIMAL1)

  AC_SUBST(JVM_VARIANT_HOTSPOT)

  AC_SUBST(JVM_VARIANT_ZERO)

  AC_SUBST(JVM_VARIANT_ZEROSHARK)

  AC_SUBST(JVM_VARIANT_CORE)