make/autoconf/flags-ldflags.m4 - platform/libcore - Git at Google

 #
 # 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.
     BASIC_LDFLAGS="$BASIC_LDFLAGS -Wl,-z,defs"

     BASIC_LDFLAGS_JVM_ONLY="-Wl,-O1 -Wl,-z,relro"


   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$OPENJDK_TARGET_OS" = xmacosx; then
       # Assume clang or gcc.
       # FIXME: We should really generalize SET_SHARED_LIBRARY_ORIGIN instead.
       OS_LDFLAGS_JVM_ONLY="-Wl,-rpath,@loader_path/. -Wl,-rpath,@loader_path/.."
       OS_LDFLAGS_JDK_ONLY="-mmacosx-version-min=$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"
       else
         # mark relocations read only on (fast/slow) debug builds
         DEBUGLEVEL_LDFLAGS_JDK_ONLY="-Wl,-z,relro"
       fi
       if test x$DEBUG_LEVEL = xslowdebug; then
         # do relocations at load
         DEBUGLEVEL_LDFLAGS="-Wl,-z,now"
       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"
   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"
     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"
     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
     $1_LDFLAGS_JDK_LIBPATH="-libpath:${OUTPUTDIR}/support/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_JDK_ONLY $DEBUGLEVEL_LDFLAGS_JDK_ONLY ${$2EXTRA_LDFLAGS}"
   $2LDFLAGS_JDKLIB="$LDFLAGS_JDK_COMMON $BASIC_LDFLAGS_JDK_LIB_ONLY \
       ${$1_LDFLAGS_JDK_LIBPATH} $SHARED_LIBRARY_FLAGS"
   $2LDFLAGS_JDKEXE="$LDFLAGS_JDK_COMMON $EXECUTABLE_LDFLAGS \
       ${$1_CPU_EXECUTABLE_LDFLAGS}"

   $2JVM_LDFLAGS="$BASIC_LDFLAGS $BASIC_LDFLAGS_JVM_ONLY $OS_LDFLAGS_JVM_ONLY \
       $DEBUGLEVEL_LDFLAGS $DEBUGLEVEL_LDFLAGS_JVM_ONLY $BASIC_LDFLAGS_ONLYCXX \
       ${$1_CPU_LDFLAGS} ${$1_CPU_LDFLAGS_JVM_ONLY} ${$2EXTRA_LDFLAGS}"

   AC_SUBST($2LDFLAGS_JDKLIB)
   AC_SUBST($2LDFLAGS_JDKEXE)

   AC_SUBST($2JVM_LDFLAGS)
 ])
	#
	# 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.
	BASIC_LDFLAGS="$BASIC_LDFLAGS -Wl,-z,defs"

	BASIC_LDFLAGS_JVM_ONLY="-Wl,-O1 -Wl,-z,relro"


	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$OPENJDK_TARGET_OS" = xmacosx; then
	# Assume clang or gcc.
	# FIXME: We should really generalize SET_SHARED_LIBRARY_ORIGIN instead.
	OS_LDFLAGS_JVM_ONLY="-Wl,-rpath,@loader_path/. -Wl,-rpath,@loader_path/.."
	OS_LDFLAGS_JDK_ONLY="-mmacosx-version-min=$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"
	else
	# mark relocations read only on (fast/slow) debug builds
	DEBUGLEVEL_LDFLAGS_JDK_ONLY="-Wl,-z,relro"
	fi
	if test x$DEBUG_LEVEL = xslowdebug; then
	# do relocations at load
	DEBUGLEVEL_LDFLAGS="-Wl,-z,now"
	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"
	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"
	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"
	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
	$1_LDFLAGS_JDK_LIBPATH="-libpath:${OUTPUTDIR}/support/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_JDK_ONLY $DEBUGLEVEL_LDFLAGS_JDK_ONLY ${$2EXTRA_LDFLAGS}"
	$2LDFLAGS_JDKLIB="$LDFLAGS_JDK_COMMON $BASIC_LDFLAGS_JDK_LIB_ONLY \
	${$1_LDFLAGS_JDK_LIBPATH} $SHARED_LIBRARY_FLAGS"
	$2LDFLAGS_JDKEXE="$LDFLAGS_JDK_COMMON $EXECUTABLE_LDFLAGS \
	${$1_CPU_EXECUTABLE_LDFLAGS}"

	$2JVM_LDFLAGS="$BASIC_LDFLAGS $BASIC_LDFLAGS_JVM_ONLY $OS_LDFLAGS_JVM_ONLY \
	$DEBUGLEVEL_LDFLAGS $DEBUGLEVEL_LDFLAGS_JVM_ONLY $BASIC_LDFLAGS_ONLYCXX \
	${$1_CPU_LDFLAGS} ${$1_CPU_LDFLAGS_JVM_ONLY} ${$2EXTRA_LDFLAGS}"

	AC_SUBST($2LDFLAGS_JDKLIB)
	AC_SUBST($2LDFLAGS_JDKEXE)

	AC_SUBST($2JVM_LDFLAGS)
	])