1 # 2 # Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved. 3 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 # 5 # This code is free software; you can redistribute it and/or modify it 6 # under the terms of the GNU General Public License version 2 only, as 7 # published by the Free Software Foundation. Oracle designates this 8 # particular file as subject to the "Classpath" exception as provided 9 # by Oracle in the LICENSE file that accompanied this code. 10 # 11 # This code is distributed in the hope that it will be useful, but WITHOUT 12 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 # version 2 for more details (a copy is included in the LICENSE file that 15 # accompanied this code). 16 # 17 # You should have received a copy of the GNU General Public License version 18 # 2 along with this work; if not, write to the Free Software Foundation, 19 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 # 21 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 # or visit www.oracle.com if you need additional information or have any 23 # questions. 24 # 25 26 ################################################################################ 27 # 28 29 AC_DEFUN([FLAGS_SETUP_LDFLAGS], 30 [ 31 FLAGS_SETUP_LDFLAGS_HELPER 32 33 # Setup the target toolchain 34 35 # On some platforms (mac) the linker warns about non existing -L dirs. 36 # For any of the variants server, client or minimal, the dir matches the 37 # variant name. The "main" variant should be used for linking. For the 38 # rest, the dir is just server. 39 if HOTSPOT_CHECK_JVM_VARIANT(server) || HOTSPOT_CHECK_JVM_VARIANT(client) \ 40 || HOTSPOT_CHECK_JVM_VARIANT(minimal); then 41 TARGET_JVM_VARIANT_PATH=$JVM_VARIANT_MAIN 42 else 43 TARGET_JVM_VARIANT_PATH=server 44 fi 45 FLAGS_SETUP_LDFLAGS_CPU_DEP([TARGET]) 46 47 # Setup the build toolchain 48 49 # When building a buildjdk, it's always only the server variant 50 BUILD_JVM_VARIANT_PATH=server 51 52 FLAGS_SETUP_LDFLAGS_CPU_DEP([BUILD], [OPENJDK_BUILD_]) 53 54 LDFLAGS_TESTLIB="$LDFLAGS_JDKLIB" 55 LDFLAGS_TESTEXE="$LDFLAGS_JDKEXE ${TARGET_LDFLAGS_JDK_LIBPATH}" 56 AC_SUBST(LDFLAGS_TESTLIB) 57 AC_SUBST(LDFLAGS_TESTEXE) 58 ]) 59 60 ################################################################################ 61 62 # CPU independent LDFLAGS setup, used for both target and build toolchain. 63 AC_DEFUN([FLAGS_SETUP_LDFLAGS_HELPER], 64 [ 65 # Setup basic LDFLAGS 66 if test "x$TOOLCHAIN_TYPE" = xgcc; then 67 # If this is a --hash-style=gnu system, use --hash-style=both, why? 68 # We have previously set HAS_GNU_HASH if this is the case 69 if test -n "$HAS_GNU_HASH"; then 70 BASIC_LDFLAGS="-Wl,--hash-style=both" 71 LIBJSIG_HASHSTYLE_LDFLAGS="-Wl,--hash-style=both" 72 fi 73 74 # Add -z defs, to forbid undefined symbols in object files. 75 BASIC_LDFLAGS="$BASIC_LDFLAGS -Wl,-z,defs" 76 77 BASIC_LDFLAGS_JVM_ONLY="-Wl,-z,noexecstack -Wl,-O1 -Wl,-z,relro" 78 79 BASIC_LDFLAGS_JDK_LIB_ONLY="-Wl,-z,noexecstack" 80 LIBJSIG_NOEXECSTACK_LDFLAGS="-Wl,-z,noexecstack" 81 82 elif test "x$TOOLCHAIN_TYPE" = xclang; then 83 BASIC_LDFLAGS_JVM_ONLY="-mno-omit-leaf-frame-pointer -mstack-alignment=16 \ 84 -stdlib=libstdc++ -fPIC" 85 86 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 87 BASIC_LDFLAGS="-Wl,-z,defs" 88 BASIC_LDFLAGS_ONLYCXX="-norunpath" 89 BASIC_LDFLAGS_ONLYCXX_JDK_ONLY="-xnolib" 90 91 BASIC_LDFLAGS_JDK_ONLY="-ztext" 92 BASIC_LDFLAGS_JVM_ONLY="-library=%none -mt -z noversion" 93 94 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 95 BASIC_LDFLAGS="-b64 -brtl -bnolibpath -bexpall -bernotok -btextpsize:64K \ 96 -bdatapsize:64K -bstackpsize:64K" 97 BASIC_LDFLAGS_JVM_ONLY="-Wl,-lC_r" 98 99 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 100 BASIC_LDFLAGS="-nologo -opt:ref" 101 BASIC_LDFLAGS_JDK_ONLY="-incremental:no" 102 BASIC_LDFLAGS_JVM_ONLY="-opt:icf,8 -subsystem:windows" 103 fi 104 105 # Setup OS-dependent LDFLAGS 106 if test "x$TOOLCHAIN_TYPE" = xclang || test "x$TOOLCHAIN_TYPE" = xgcc; then 107 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 108 # Assume clang or gcc. 109 # FIXME: We should really generalize SET_SHARED_LIBRARY_ORIGIN instead. 110 OS_LDFLAGS_JVM_ONLY="-Wl,-rpath,@loader_path/. -Wl,-rpath,@loader_path/.." 111 OS_LDFLAGS_JDK_ONLY="-mmacosx-version-min=$MACOSX_VERSION_MIN" 112 fi 113 fi 114 115 # Setup debug level-dependent LDFLAGS 116 if test "x$TOOLCHAIN_TYPE" = xgcc; then 117 if test "x$OPENJDK_TARGET_OS" = xlinux; then 118 if test x$DEBUG_LEVEL = xrelease; then 119 DEBUGLEVEL_LDFLAGS_JDK_ONLY="$DEBUGLEVEL_LDFLAGS_JDK_ONLY -Wl,-O1" 120 else 121 # mark relocations read only on (fast/slow) debug builds 122 DEBUGLEVEL_LDFLAGS_JDK_ONLY="-Wl,-z,relro" 123 fi 124 if test x$DEBUG_LEVEL = xslowdebug; then 125 # do relocations at load 126 DEBUGLEVEL_LDFLAGS="-Wl,-z,now" 127 fi 128 fi 129 130 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 131 # We need '-qminimaltoc' or '-qpic=large -bbigtoc' if the TOC overflows. 132 # Hotspot now overflows its 64K TOC (currently only for debug), 133 # so we build with '-qpic=large -bbigtoc'. 134 if test "x$DEBUG_LEVEL" != xrelease; then 135 DEBUGLEVEL_LDFLAGS_JVM_ONLY="$DEBUGLEVEL_LDFLAGS_JVM_ONLY -bbigtoc" 136 fi 137 fi 138 139 # Setup LDFLAGS for linking executables 140 if test "x$TOOLCHAIN_TYPE" = xgcc; then 141 EXECUTABLE_LDFLAGS="$EXECUTABLE_LDFLAGS -Wl,--allow-shlib-undefined" 142 fi 143 144 # Export some intermediate variables for compatibility 145 LDFLAGS_CXX_JDK="$BASIC_LDFLAGS_ONLYCXX $BASIC_LDFLAGS_ONLYCXX_JDK_ONLY $DEBUGLEVEL_LDFLAGS_JDK_ONLY" 146 AC_SUBST(LDFLAGS_CXX_JDK) 147 AC_SUBST(LIBJSIG_HASHSTYLE_LDFLAGS) 148 AC_SUBST(LIBJSIG_NOEXECSTACK_LDFLAGS) 149 ]) 150 151 ################################################################################ 152 # $1 - Either BUILD or TARGET to pick the correct OS/CPU variables to check 153 # conditionals against. 154 # $2 - Optional prefix for each variable defined. 155 AC_DEFUN([FLAGS_SETUP_LDFLAGS_CPU_DEP], 156 [ 157 # Setup CPU-dependent basic LDFLAGS. These can differ between the target and 158 # build toolchain. 159 if test "x$TOOLCHAIN_TYPE" = xgcc; then 160 if test "x${OPENJDK_$1_CPU}" = xx86; then 161 $1_CPU_LDFLAGS_JVM_ONLY="-march=i586" 162 elif test "x$OPENJDK_$1_CPU" = xarm; then 163 $1_CPU_LDFLAGS_JVM_ONLY="${$1_CPU_LDFLAGS_JVM_ONLY} -fsigned-char" 164 $1_CPU_LDFLAGS="$ARM_ARCH_TYPE_FLAGS $ARM_FLOAT_TYPE_FLAGS" 165 elif test "x$FLAGS_CPU" = xaarch64; then 166 if test "x$HOTSPOT_TARGET_CPU_PORT" = xarm64; then 167 $1_CPU_LDFLAGS_JVM_ONLY="${$1_CPU_LDFLAGS_JVM_ONLY} -fsigned-char" 168 fi 169 fi 170 171 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 172 if test "x${OPENJDK_$1_CPU}" = "xsparcv9"; then 173 $1_CPU_LDFLAGS_JVM_ONLY="-xarch=sparc" 174 fi 175 176 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 177 if test "x${OPENJDK_$1_CPU}" = "xx86"; then 178 $1_CPU_LDFLAGS="-safeseh" 179 # NOTE: Old build added -machine. Probably not needed. 180 $1_CPU_LDFLAGS_JVM_ONLY="-machine:I386" 181 $1_CPU_EXECUTABLE_LDFLAGS="-stack:327680" 182 else 183 $1_CPU_LDFLAGS_JVM_ONLY="-machine:AMD64" 184 $1_CPU_EXECUTABLE_LDFLAGS="-stack:1048576" 185 fi 186 fi 187 188 # JVM_VARIANT_PATH depends on if this is build or target... 189 if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 190 $1_LDFLAGS_JDK_LIBPATH="-libpath:${OUTPUTDIR}/support/modules_libs/java.base" 191 else 192 $1_LDFLAGS_JDK_LIBPATH="-L\$(SUPPORT_OUTPUTDIR)/modules_libs/java.base \ 193 -L\$(SUPPORT_OUTPUTDIR)/modules_libs/java.base/${$1_JVM_VARIANT_PATH}" 194 fi 195 196 # Export variables according to old definitions, prefix with $2 if present. 197 LDFLAGS_JDK_COMMON="$BASIC_LDFLAGS $BASIC_LDFLAGS_JDK_ONLY \ 198 $OS_LDFLAGS_JDK_ONLY $DEBUGLEVEL_LDFLAGS_JDK_ONLY ${$2EXTRA_LDFLAGS}" 199 $2LDFLAGS_JDKLIB="$LDFLAGS_JDK_COMMON $BASIC_LDFLAGS_JDK_LIB_ONLY \ 200 ${$1_LDFLAGS_JDK_LIBPATH} $SHARED_LIBRARY_FLAGS" 201 $2LDFLAGS_JDKEXE="$LDFLAGS_JDK_COMMON $EXECUTABLE_LDFLAGS \ 202 ${$1_CPU_EXECUTABLE_LDFLAGS}" 203 204 $2JVM_LDFLAGS="$BASIC_LDFLAGS $BASIC_LDFLAGS_JVM_ONLY $OS_LDFLAGS_JVM_ONLY \ 205 $DEBUGLEVEL_LDFLAGS $DEBUGLEVEL_LDFLAGS_JVM_ONLY $BASIC_LDFLAGS_ONLYCXX \ 206 ${$1_CPU_LDFLAGS} ${$1_CPU_LDFLAGS_JVM_ONLY} ${$2EXTRA_LDFLAGS}" 207 208 AC_SUBST($2LDFLAGS_JDKLIB) 209 AC_SUBST($2LDFLAGS_JDKEXE) 210 211 AC_SUBST($2JVM_LDFLAGS) 212 ])