jdk-24/make/autoconf/hotspot.m4
2024-09-03 15:31:09 +00:00

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#
# Copyright (c) 2011, 2022, Oracle and/or its affiliates. All rights reserved.
# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
#
# This code is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License version 2 only, as
# published by the Free Software Foundation. Oracle designates this
# particular file as subject to the "Classpath" exception as provided
# by Oracle in the LICENSE file that accompanied this code.
#
# This code is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
# version 2 for more details (a copy is included in the LICENSE file that
# accompanied this code).
#
# You should have received a copy of the GNU General Public License version
# 2 along with this work; if not, write to the Free Software Foundation,
# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
# or visit www.oracle.com if you need additional information or have any
# questions.
#
# All valid JVM variants
VALID_JVM_VARIANTS="server client minimal core zero 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 " =~ " $1 " ]] ] ])
################################################################################
# Check which variants of the JVM that we want to build. Available variants are:
# server: normal interpreter, and a tiered C1/C2 compiler
# client: normal interpreter, and C1 (no C2 compiler)
# minimal: reduced form of client with optional features stripped out
# core: normal interpreter only, no compiler
# zero: C++ based interpreter only, no compiler
# custom: baseline JVM with no default features
#
AC_DEFUN_ONCE([HOTSPOT_SETUP_JVM_VARIANTS],
[
AC_ARG_WITH([jvm-variants], [AS_HELP_STRING([--with-jvm-variants],
[JVM variants to build, separated by commas (server client minimal core
zero custom) @<:@server@:>@])])
if test "x$with_jvm_variants" = x; then
with_jvm_variants="server"
fi
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
UTIL_GET_NON_MATCHING_VALUES(INVALID_VARIANTS, $JVM_VARIANTS, \
$VALID_JVM_VARIANTS)
if test "x$INVALID_VARIANTS" != x; then
AC_MSG_NOTICE([Unknown variant(s) specified: "$INVALID_VARIANTS"])
AC_MSG_NOTICE([The available JVM variants are: "$VALID_JVM_VARIANTS"])
AC_MSG_ERROR([Cannot continue])
fi
# The "main" variant is the one used by other libs to link against during the
# build.
if test "x$BUILDING_MULTIPLE_JVM_VARIANTS" = "xtrue"; then
MAIN_VARIANT_PRIO_ORDER="server client minimal zero"
for variant in $MAIN_VARIANT_PRIO_ORDER; do
if HOTSPOT_CHECK_JVM_VARIANT($variant); then
JVM_VARIANT_MAIN="$variant"
break
fi
done
else
JVM_VARIANT_MAIN="$JVM_VARIANTS"
fi
AC_SUBST(JVM_VARIANTS)
AC_SUBST(VALID_JVM_VARIANTS)
AC_SUBST(JVM_VARIANT_MAIN)
])
################################################################################
# Misc hotspot setup that does not fit elsewhere.
#
AC_DEFUN_ONCE([HOTSPOT_SETUP_MISC],
[
if HOTSPOT_CHECK_JVM_VARIANT(zero); then
# zero behaves as a platform and rewrites these values. This is a bit weird.
# But when building zero, we never build any other variants so it works.
HOTSPOT_TARGET_CPU=zero
HOTSPOT_TARGET_CPU_ARCH=zero
fi
AC_ARG_WITH([hotspot-build-time], [AS_HELP_STRING([--with-hotspot-build-time],
[timestamp to use in hotspot version string, empty means determined at build time @<:@source-date/empty@:>@])])
AC_MSG_CHECKING([what hotspot build time to use])
if test "x$with_hotspot_build_time" != x; then
HOTSPOT_BUILD_TIME="$with_hotspot_build_time"
AC_MSG_RESULT([$HOTSPOT_BUILD_TIME (from --with-hotspot-build-time)])
else
if test "x$SOURCE_DATE" = xupdated; then
HOTSPOT_BUILD_TIME=""
AC_MSG_RESULT([determined at build time (default)])
else
# If we have a fixed value for SOURCE_DATE, use it as default
HOTSPOT_BUILD_TIME="$SOURCE_DATE_ISO_8601"
AC_MSG_RESULT([$HOTSPOT_BUILD_TIME (from --with-source-date)])
fi
fi
AC_SUBST(HOTSPOT_BUILD_TIME)
# Override hotspot cpu definitions for ARM platforms
if test "x$OPENJDK_TARGET_CPU" = xarm; then
HOTSPOT_TARGET_CPU=arm_32
HOTSPOT_TARGET_CPU_DEFINE="ARM32"
fi
])