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#
# Copyright (c) 2011, 2018, 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.
#
################################################################################
#
AC_DEFUN([FLAGS_SETUP_LDFLAGS],
[
FLAGS_SETUP_LDFLAGS_HELPER
# Setup the target toolchain
# On some platforms (mac) the linker warns about non existing -L dirs.
# For any of the variants server, client or minimal, the dir matches the
# variant name. The "main" variant should be used for linking. For the
# rest, the dir is just server.
if HOTSPOT_CHECK_JVM_VARIANT(server) || HOTSPOT_CHECK_JVM_VARIANT(client) \
|| HOTSPOT_CHECK_JVM_VARIANT(minimal); then
TARGET_JVM_VARIANT_PATH=$JVM_VARIANT_MAIN
else
TARGET_JVM_VARIANT_PATH=server
fi
FLAGS_SETUP_LDFLAGS_CPU_DEP([TARGET])
# Setup the build toolchain
# When building a buildjdk, it's always only the server variant
BUILD_JVM_VARIANT_PATH=server
FLAGS_SETUP_LDFLAGS_CPU_DEP([BUILD], [OPENJDK_BUILD_])
LDFLAGS_TESTEXE="${TARGET_LDFLAGS_JDK_LIBPATH}"
AC_SUBST(LDFLAGS_TESTEXE)
])
################################################################################
# CPU independent LDFLAGS setup, used for both target and build toolchain.
AC_DEFUN([FLAGS_SETUP_LDFLAGS_HELPER],
[
# Setup basic LDFLAGS
if test "x$TOOLCHAIN_TYPE" = xgcc; then
# If this is a --hash-style=gnu system, use --hash-style=both, why?
# We have previously set HAS_GNU_HASH if this is the case
if test -n "$HAS_GNU_HASH"; then
BASIC_LDFLAGS="-Wl,--hash-style=both"
LIBJSIG_HASHSTYLE_LDFLAGS="-Wl,--hash-style=both"
fi
# Add -z defs, to forbid undefined symbols in object files.
# add -z,relro (mark relocations read only) for all libs
# add -z,now ("full relro" - more of the Global Offset Table GOT is marked read only)
BASIC_LDFLAGS="$BASIC_LDFLAGS -Wl,-z,defs -Wl,-z,relro -Wl,-z,now"
# s390x : remove unused code+data in link step
if test "x$OPENJDK_TARGET_CPU" = xs390x; then
BASIC_LDFLAGS="$BASIC_LDFLAGS -Wl,--gc-sections"
fi
BASIC_LDFLAGS_JVM_ONLY="-Wl,-O1"
elif test "x$TOOLCHAIN_TYPE" = xclang; then
BASIC_LDFLAGS_JVM_ONLY="-mno-omit-leaf-frame-pointer -mstack-alignment=16 \
-fPIC"
elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
BASIC_LDFLAGS="-Wl,-z,defs"
BASIC_LDFLAGS_ONLYCXX="-norunpath"
BASIC_LDFLAGS_ONLYCXX_JDK_ONLY="-xnolib"
BASIC_LDFLAGS_JDK_ONLY="-ztext"
BASIC_LDFLAGS_JVM_ONLY="-library=%none -mt -z noversion"
elif test "x$TOOLCHAIN_TYPE" = xxlc; then
BASIC_LDFLAGS="-b64 -brtl -bnolibpath -bexpall -bernotok -btextpsize:64K \
-bdatapsize:64K -bstackpsize:64K"
# libjvm.so has gotten too large for normal TOC size; compile with qpic=large and link with bigtoc
BASIC_LDFLAGS_JVM_ONLY="-Wl,-lC_r -bbigtoc"
elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
BASIC_LDFLAGS="-nologo -opt:ref"
BASIC_LDFLAGS_JDK_ONLY="-incremental:no"
BASIC_LDFLAGS_JVM_ONLY="-opt:icf,8 -subsystem:windows"
fi
if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then
if test -n "$HAS_NOEXECSTACK"; then
BASIC_LDFLAGS="$BASIC_LDFLAGS -Wl,-z,noexecstack"
fi
fi
# Setup OS-dependent LDFLAGS
if test "x$TOOLCHAIN_TYPE" = xclang || test "x$TOOLCHAIN_TYPE" = xgcc; then
if test "x$OPENJDK_TARGET_OS" = xmacosx; then
# Assume clang or gcc.
# FIXME: We should really generalize SET_SHARED_LIBRARY_ORIGIN instead.
OS_LDFLAGS_JVM_ONLY="-Wl,-rpath,@loader_path/. -Wl,-rpath,@loader_path/.."
OS_LDFLAGS="-mmacosx-version-min=$MACOSX_VERSION_MIN"
fi
fi
# Setup debug level-dependent LDFLAGS
if test "x$TOOLCHAIN_TYPE" = xgcc; then
if test "x$OPENJDK_TARGET_OS" = xlinux; then
if test x$DEBUG_LEVEL = xrelease; then
DEBUGLEVEL_LDFLAGS_JDK_ONLY="$DEBUGLEVEL_LDFLAGS_JDK_ONLY -Wl,-O1"
fi
fi
elif test "x$TOOLCHAIN_TYPE" = xxlc; then
# We need '-qminimaltoc' or '-qpic=large -bbigtoc' if the TOC overflows.
# Hotspot now overflows its 64K TOC (currently only for debug),
# so we build with '-qpic=large -bbigtoc'.
if test "x$DEBUG_LEVEL" != xrelease; then
DEBUGLEVEL_LDFLAGS_JVM_ONLY="$DEBUGLEVEL_LDFLAGS_JVM_ONLY -bbigtoc"
fi
fi
# Setup warning flags
if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
LDFLAGS_WARNINGS_ARE_ERRORS="-Wl,-z,fatal-warnings"
else
LDFLAGS_WARNINGS_ARE_ERRORS=""
fi
AC_SUBST(LDFLAGS_WARNINGS_ARE_ERRORS)
# Setup LDFLAGS for linking executables
if test "x$TOOLCHAIN_TYPE" = xgcc; then
EXECUTABLE_LDFLAGS="$EXECUTABLE_LDFLAGS -Wl,--allow-shlib-undefined"
# Enabling pie on 32 bit builds prevents the JVM from allocating a continuous
# java heap.
if test "x$OPENJDK_TARGET_CPU_BITS" != "x32"; then
EXECUTABLE_LDFLAGS="$EXECUTABLE_LDFLAGS -pie"
fi
fi
if test "x$ENABLE_REPRODUCIBLE_BUILD" = "xtrue"; then
if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
REPRODUCIBLE_LDFLAGS="-experimental:deterministic"
fi
fi
if test "x$ALLOW_ABSOLUTE_PATHS_IN_OUTPUT" = "xfalse"; then
if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
BASIC_LDFLAGS="$BASIC_LDFLAGS -pdbaltpath:%_PDB%"
# PATHMAP_FLAGS is setup in flags-cflags.m4.
FILE_MACRO_LDFLAGS="${PATHMAP_FLAGS}"
fi
fi
# Export some intermediate variables for compatibility
LDFLAGS_CXX_JDK="$BASIC_LDFLAGS_ONLYCXX $BASIC_LDFLAGS_ONLYCXX_JDK_ONLY $DEBUGLEVEL_LDFLAGS_JDK_ONLY"
AC_SUBST(LDFLAGS_CXX_JDK)
AC_SUBST(LIBJSIG_HASHSTYLE_LDFLAGS)
AC_SUBST(LIBJSIG_NOEXECSTACK_LDFLAGS)
])
################################################################################
# $1 - Either BUILD or TARGET to pick the correct OS/CPU variables to check
# conditionals against.
# $2 - Optional prefix for each variable defined.
AC_DEFUN([FLAGS_SETUP_LDFLAGS_CPU_DEP],
[
# Setup CPU-dependent basic LDFLAGS. These can differ between the target and
# build toolchain.
if test "x$TOOLCHAIN_TYPE" = xgcc; then
if test "x${OPENJDK_$1_CPU}" = xx86; then
$1_CPU_LDFLAGS_JVM_ONLY="-march=i586"
elif test "x$OPENJDK_$1_CPU" = xarm; then
$1_CPU_LDFLAGS_JVM_ONLY="${$1_CPU_LDFLAGS_JVM_ONLY} -fsigned-char"
$1_CPU_LDFLAGS="$ARM_ARCH_TYPE_FLAGS $ARM_FLOAT_TYPE_FLAGS"
elif test "x$FLAGS_CPU" = xaarch64; then
if test "x$HOTSPOT_TARGET_CPU_PORT" = xarm64; then
$1_CPU_LDFLAGS_JVM_ONLY="${$1_CPU_LDFLAGS_JVM_ONLY} -fsigned-char"
fi
fi
elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
if test "x${OPENJDK_$1_CPU}" = "xsparcv9"; then
$1_CPU_LDFLAGS_JVM_ONLY="-xarch=sparc"
fi
elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
if test "x${OPENJDK_$1_CPU}" = "xx86"; then
$1_CPU_LDFLAGS="-safeseh"
# NOTE: Old build added -machine. Probably not needed.
$1_CPU_LDFLAGS_JVM_ONLY="-machine:I386"
$1_CPU_EXECUTABLE_LDFLAGS="-stack:327680"
elif test "x${OPENJDK_$1_CPU}" = "xaarch64"; then
$1_CPU_EXECUTABLE_LDFLAGS="-stack:1048576"
else
$1_CPU_LDFLAGS_JVM_ONLY="-machine:AMD64"
$1_CPU_EXECUTABLE_LDFLAGS="-stack:1048576"
fi
fi
# JVM_VARIANT_PATH depends on if this is build or target...
if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
$1_LDFLAGS_JDK_LIBPATH="-libpath:\$(SUPPORT_OUTPUTDIR)/modules_libs/java.base"
else
$1_LDFLAGS_JDK_LIBPATH="-L\$(SUPPORT_OUTPUTDIR)/modules_libs/java.base \
-L\$(SUPPORT_OUTPUTDIR)/modules_libs/java.base/${$1_JVM_VARIANT_PATH}"
fi
# Export variables according to old definitions, prefix with $2 if present.
LDFLAGS_JDK_COMMON="$BASIC_LDFLAGS $BASIC_LDFLAGS_JDK_ONLY \
$OS_LDFLAGS $DEBUGLEVEL_LDFLAGS_JDK_ONLY ${$2EXTRA_LDFLAGS}"
$2LDFLAGS_JDKLIB="$LDFLAGS_JDK_COMMON $BASIC_LDFLAGS_JDK_LIB_ONLY \
${$1_LDFLAGS_JDK_LIBPATH} $SHARED_LIBRARY_FLAGS \
$REPRODUCIBLE_LDFLAGS $FILE_MACRO_LDFLAGS"
$2LDFLAGS_JDKEXE="$LDFLAGS_JDK_COMMON $EXECUTABLE_LDFLAGS \
${$1_CPU_EXECUTABLE_LDFLAGS} $REPRODUCIBLE_LDFLAGS $FILE_MACRO_LDFLAGS"
$2JVM_LDFLAGS="$BASIC_LDFLAGS $BASIC_LDFLAGS_JVM_ONLY $OS_LDFLAGS $OS_LDFLAGS_JVM_ONLY \
$DEBUGLEVEL_LDFLAGS $DEBUGLEVEL_LDFLAGS_JVM_ONLY $BASIC_LDFLAGS_ONLYCXX \
${$1_CPU_LDFLAGS} ${$1_CPU_LDFLAGS_JVM_ONLY} ${$2EXTRA_LDFLAGS} \
$REPRODUCIBLE_LDFLAGS $FILE_MACRO_LDFLAGS"
AC_SUBST($2LDFLAGS_JDKLIB)
AC_SUBST($2LDFLAGS_JDKEXE)
AC_SUBST($2JVM_LDFLAGS)
])
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