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#
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# Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
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# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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#
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# This code is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License version 2 only, as
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# published by the Free Software Foundation. Oracle designates this
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# particular file as subject to the "Classpath" exception as provided
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# by Oracle in the LICENSE file that accompanied this code.
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#
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# This code is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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# version 2 for more details (a copy is included in the LICENSE file that
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# accompanied this code).
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#
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# You should have received a copy of the GNU General Public License version
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# 2 along with this work; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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#
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# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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# or visit www.oracle.com if you need additional information or have any
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# questions.
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#
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################################################################################
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#
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AC_DEFUN([FLAGS_SETUP_LDFLAGS],
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[
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FLAGS_SETUP_LDFLAGS_HELPER
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# Setup the target toolchain
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# On some platforms (mac) the linker warns about non existing -L dirs.
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# For any of the variants server, client or minimal, the dir matches the
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# variant name. The "main" variant should be used for linking. For the
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# rest, the dir is just server.
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if HOTSPOT_CHECK_JVM_VARIANT(server) || HOTSPOT_CHECK_JVM_VARIANT(client) \
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|| HOTSPOT_CHECK_JVM_VARIANT(minimal); then
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TARGET_JVM_VARIANT_PATH=$JVM_VARIANT_MAIN
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else
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TARGET_JVM_VARIANT_PATH=server
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fi
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FLAGS_SETUP_LDFLAGS_CPU_DEP([TARGET])
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# Setup the build toolchain
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# When building a buildjdk, it's always only the server variant
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BUILD_JVM_VARIANT_PATH=server
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FLAGS_SETUP_LDFLAGS_CPU_DEP([BUILD], [OPENJDK_BUILD_])
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LDFLAGS_TESTLIB="$LDFLAGS_JDKLIB"
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LDFLAGS_TESTEXE="$LDFLAGS_JDKEXE ${TARGET_LDFLAGS_JDK_LIBPATH}"
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AC_SUBST(LDFLAGS_TESTLIB)
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AC_SUBST(LDFLAGS_TESTEXE)
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])
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################################################################################
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# CPU independent LDFLAGS setup, used for both target and build toolchain.
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AC_DEFUN([FLAGS_SETUP_LDFLAGS_HELPER],
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[
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# Setup basic LDFLAGS
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if test "x$TOOLCHAIN_TYPE" = xgcc; then
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# If this is a --hash-style=gnu system, use --hash-style=both, why?
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# We have previously set HAS_GNU_HASH if this is the case
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if test -n "$HAS_GNU_HASH"; then
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BASIC_LDFLAGS="-Wl,--hash-style=both"
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LIBJSIG_HASHSTYLE_LDFLAGS="-Wl,--hash-style=both"
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fi
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# Add -z defs, to forbid undefined symbols in object files.
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BASIC_LDFLAGS="$BASIC_LDFLAGS -Wl,-z,defs"
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BASIC_LDFLAGS_JVM_ONLY="-Wl,-z,noexecstack -Wl,-O1 -Wl,-z,relro"
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BASIC_LDFLAGS_JDK_LIB_ONLY="-Wl,-z,noexecstack"
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LIBJSIG_NOEXECSTACK_LDFLAGS="-Wl,-z,noexecstack"
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elif test "x$TOOLCHAIN_TYPE" = xclang; then
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BASIC_LDFLAGS_JVM_ONLY="-mno-omit-leaf-frame-pointer -mstack-alignment=16 \
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-stdlib=libstdc++ -fPIC"
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elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
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BASIC_LDFLAGS="-Wl,-z,defs"
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BASIC_LDFLAGS_ONLYCXX="-norunpath"
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BASIC_LDFLAGS_ONLYCXX_JDK_ONLY="-xnolib"
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BASIC_LDFLAGS_JDK_ONLY="-ztext"
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BASIC_LDFLAGS_JVM_ONLY="-library=%none -mt -z noversion"
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elif test "x$TOOLCHAIN_TYPE" = xxlc; then
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BASIC_LDFLAGS="-b64 -brtl -bnolibpath -bexpall -bernotok -btextpsize:64K \
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-bdatapsize:64K -bstackpsize:64K"
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BASIC_LDFLAGS_JVM_ONLY="-Wl,-lC_r"
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elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
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BASIC_LDFLAGS="-nologo -opt:ref"
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BASIC_LDFLAGS_JDK_ONLY="-incremental:no"
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BASIC_LDFLAGS_JVM_ONLY="-opt:icf,8 -subsystem:windows -base:0x8000000"
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fi
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# Setup OS-dependent LDFLAGS
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if test "x$TOOLCHAIN_TYPE" = xclang || test "x$TOOLCHAIN_TYPE" = xgcc; then
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if test "x$OPENJDK_TARGET_OS" = xmacosx; then
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# Assume clang or gcc.
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# FIXME: We should really generalize SET_SHARED_LIBRARY_ORIGIN instead.
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OS_LDFLAGS_JVM_ONLY="-Wl,-rpath,@loader_path/. -Wl,-rpath,@loader_path/.."
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OS_LDFLAGS_JDK_ONLY="-mmacosx-version-min=$MACOSX_VERSION_MIN"
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fi
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fi
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# Setup debug level-dependent LDFLAGS
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if test "x$TOOLCHAIN_TYPE" = xgcc; then
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if test "x$OPENJDK_TARGET_OS" = xlinux; then
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if test x$DEBUG_LEVEL = xrelease; then
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DEBUGLEVEL_LDFLAGS_JDK_ONLY="$DEBUGLEVEL_LDFLAGS_JDK_ONLY -Wl,-O1"
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else
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# mark relocations read only on (fast/slow) debug builds
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DEBUGLEVEL_LDFLAGS_JDK_ONLY="-Wl,-z,relro"
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fi
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if test x$DEBUG_LEVEL = xslowdebug; then
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# do relocations at load
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DEBUGLEVEL_LDFLAGS="-Wl,-z,now"
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fi
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fi
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elif test "x$TOOLCHAIN_TYPE" = xxlc; then
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# We need '-qminimaltoc' or '-qpic=large -bbigtoc' if the TOC overflows.
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# Hotspot now overflows its 64K TOC (currently only for debug),
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# so we build with '-qpic=large -bbigtoc'.
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if test "x$DEBUG_LEVEL" != xrelease; then
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DEBUGLEVEL_LDFLAGS_JVM_ONLY="$DEBUGLEVEL_LDFLAGS_JVM_ONLY -bbigtoc"
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fi
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fi
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# Setup LDFLAGS for linking executables
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if test "x$TOOLCHAIN_TYPE" = xgcc; then
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EXECUTABLE_LDFLAGS="$EXECUTABLE_LDFLAGS -Wl,--allow-shlib-undefined"
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fi
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# Export some intermediate variables for compatibility
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LDFLAGS_CXX_JDK="$BASIC_LDFLAGS_ONLYCXX $BASIC_LDFLAGS_ONLYCXX_JDK_ONLY $DEBUGLEVEL_LDFLAGS_JDK_ONLY"
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AC_SUBST(LDFLAGS_CXX_JDK)
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AC_SUBST(LIBJSIG_HASHSTYLE_LDFLAGS)
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AC_SUBST(LIBJSIG_NOEXECSTACK_LDFLAGS)
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])
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################################################################################
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# $1 - Either BUILD or TARGET to pick the correct OS/CPU variables to check
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# conditionals against.
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# $2 - Optional prefix for each variable defined.
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AC_DEFUN([FLAGS_SETUP_LDFLAGS_CPU_DEP],
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[
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# Setup CPU-dependent basic LDFLAGS. These can differ between the target and
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# build toolchain.
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if test "x$TOOLCHAIN_TYPE" = xgcc; then
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if test "x${OPENJDK_$1_CPU}" = xx86; then
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$1_CPU_LDFLAGS_JVM_ONLY="-march=i586"
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elif test "x$OPENJDK_$1_CPU" = xarm; then
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$1_CPU_LDFLAGS_JVM_ONLY="${$1_CPU_LDFLAGS_JVM_ONLY} -fsigned-char"
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$1_CPU_LDFLAGS="$ARM_ARCH_TYPE_FLAGS $ARM_FLOAT_TYPE_FLAGS"
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elif test "x$FLAGS_CPU" = xaarch64; then
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if test "x$HOTSPOT_TARGET_CPU_PORT" = xarm64; then
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$1_CPU_LDFLAGS_JVM_ONLY="${$1_CPU_LDFLAGS_JVM_ONLY} -fsigned-char"
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fi
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fi
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elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
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if test "x${OPENJDK_$1_CPU}" = "xsparcv9"; then
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$1_CPU_LDFLAGS_JVM_ONLY="-xarch=sparc"
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fi
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elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
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if test "x${OPENJDK_$1_CPU}" = "xx86"; then
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$1_CPU_LDFLAGS="-safeseh"
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# NOTE: Old build added -machine. Probably not needed.
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$1_CPU_LDFLAGS_JVM_ONLY="-machine:I386"
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$1_CPU_EXECUTABLE_LDFLAGS="-stack:327680"
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else
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$1_CPU_LDFLAGS_JVM_ONLY="-machine:AMD64"
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$1_CPU_EXECUTABLE_LDFLAGS="-stack:1048576"
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fi
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fi
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# JVM_VARIANT_PATH depends on if this is build or target...
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if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
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$1_LDFLAGS_JDK_LIBPATH="-libpath:${OUTPUTDIR}/support/modules_libs/java.base"
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else
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$1_LDFLAGS_JDK_LIBPATH="-L\$(SUPPORT_OUTPUTDIR)/modules_libs/java.base \
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-L\$(SUPPORT_OUTPUTDIR)/modules_libs/java.base/${$1_JVM_VARIANT_PATH}"
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fi
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# Export variables according to old definitions, prefix with $2 if present.
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LDFLAGS_JDK_COMMON="$BASIC_LDFLAGS $BASIC_LDFLAGS_JDK_ONLY \
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$OS_LDFLAGS_JDK_ONLY $DEBUGLEVEL_LDFLAGS_JDK_ONLY ${$2EXTRA_LDFLAGS}"
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$2LDFLAGS_JDKLIB="$LDFLAGS_JDK_COMMON $BASIC_LDFLAGS_JDK_LIB_ONLY \
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${$1_LDFLAGS_JDK_LIBPATH} $SHARED_LIBRARY_FLAGS"
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$2LDFLAGS_JDKEXE="$LDFLAGS_JDK_COMMON $EXECUTABLE_LDFLAGS \
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${$1_CPU_EXECUTABLE_LDFLAGS}"
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$2JVM_LDFLAGS="$BASIC_LDFLAGS $BASIC_LDFLAGS_JVM_ONLY $OS_LDFLAGS_JVM_ONLY \
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$DEBUGLEVEL_LDFLAGS $DEBUGLEVEL_LDFLAGS_JVM_ONLY $BASIC_LDFLAGS_ONLYCXX \
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${$1_CPU_LDFLAGS} ${$1_CPU_LDFLAGS_JVM_ONLY} ${$2EXTRA_LDFLAGS}"
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AC_SUBST($2LDFLAGS_JDKLIB)
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AC_SUBST($2LDFLAGS_JDKEXE)
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AC_SUBST($2JVM_LDFLAGS)
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])
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