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 || test "x$TOOLCHAIN_TYPE" = xclang; then 67 # If this is a --hash-style=gnu system, use --hash-style=both, why? 68 # We have previously set HAS_GNU_HASH if this is the case 69 if test -n "$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" = xsolstudio; then 83 BASIC_LDFLAGS="-Wl,-z,defs" 84 BASIC_LDFLAGS_ONLYCXX="-norunpath" 85 BASIC_LDFLAGS_ONLYCXX_JDK_ONLY="-xnolib" 86 87 BASIC_LDFLAGS_JDK_ONLY="-ztext" 88 BASIC_LDFLAGS_JVM_ONLY="-library=%none -mt -z noversion" 89 90 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 91 BASIC_LDFLAGS="-b64 -brtl -bnolibpath -bexpall -bernotok -btextpsize:64K \ 92 -bdatapsize:64K -bstackpsize:64K" 93 # libjvm.so has gotten too large for normal TOC size; compile with qpic=large and link with bigtoc 94 BASIC_LDFLAGS_JVM_ONLY="-Wl,-lC_r -bbigtoc" 95 96 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 97 BASIC_LDFLAGS="-nologo -opt:ref" 98 BASIC_LDFLAGS_JDK_ONLY="-incremental:no" 99 BASIC_LDFLAGS_JVM_ONLY="-opt:icf,8 -subsystem:windows" 100 fi 101 102 # Setup OS-dependent LDFLAGS 103 if test "x$TOOLCHAIN_TYPE" = xclang || test "x$TOOLCHAIN_TYPE" = xgcc; then 104 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 105 # Assume clang or gcc. 106 # FIXME: We should really generalize SET_SHARED_LIBRARY_ORIGIN instead. 107 OS_LDFLAGS_JVM_ONLY="-Wl,-rpath,@loader_path/. -Wl,-rpath,@loader_path/.." 108 OS_LDFLAGS_JDK_ONLY="-mmacosx-version-min=$MACOSX_VERSION_MIN" 109 fi 110 fi 111 112 # Setup debug level-dependent LDFLAGS 113 if test "x$TOOLCHAIN_TYPE" = xgcc; then 114 if test "x$OPENJDK_TARGET_OS" = xlinux; then 115 if test x$DEBUG_LEVEL = xrelease; then 116 DEBUGLEVEL_LDFLAGS_JDK_ONLY="$DEBUGLEVEL_LDFLAGS_JDK_ONLY -Wl,-O1" 117 else 118 # mark relocations read only on (fast/slow) debug builds 119 DEBUGLEVEL_LDFLAGS_JDK_ONLY="-Wl,-z,relro" 120 fi 121 if test x$DEBUG_LEVEL = xslowdebug; then 122 # do relocations at load 123 DEBUGLEVEL_LDFLAGS="-Wl,-z,now" 124 fi 125 fi 126 127 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 128 # We need '-qminimaltoc' or '-qpic=large -bbigtoc' if the TOC overflows. 129 # Hotspot now overflows its 64K TOC (currently only for debug), 130 # so we build with '-qpic=large -bbigtoc'. 131 if test "x$DEBUG_LEVEL" != xrelease; then 132 DEBUGLEVEL_LDFLAGS_JVM_ONLY="$DEBUGLEVEL_LDFLAGS_JVM_ONLY -bbigtoc" 133 fi 134 fi 135 136 # Setup LDFLAGS for linking executables 137 if test "x$TOOLCHAIN_TYPE" = xgcc; then 138 EXECUTABLE_LDFLAGS="$EXECUTABLE_LDFLAGS -Wl,--allow-shlib-undefined" 139 fi 140 141 # Export some intermediate variables for compatibility 142 LDFLAGS_CXX_JDK="$BASIC_LDFLAGS_ONLYCXX $BASIC_LDFLAGS_ONLYCXX_JDK_ONLY $DEBUGLEVEL_LDFLAGS_JDK_ONLY" 143 AC_SUBST(LDFLAGS_CXX_JDK) 144 AC_SUBST(LIBJSIG_HASHSTYLE_LDFLAGS) 145 AC_SUBST(LIBJSIG_NOEXECSTACK_LDFLAGS) 146 ]) 147 148 ################################################################################ 149 # $1 - Either BUILD or TARGET to pick the correct OS/CPU variables to check 150 # conditionals against. 151 # $2 - Optional prefix for each variable defined. 152 AC_DEFUN([FLAGS_SETUP_LDFLAGS_CPU_DEP], 153 [ 154 # Setup CPU-dependent basic LDFLAGS. These can differ between the target and 155 # build toolchain. 156 if test "x$TOOLCHAIN_TYPE" = xgcc; then 157 if test "x${OPENJDK_$1_CPU}" = xx86; then 158 $1_CPU_LDFLAGS_JVM_ONLY="-march=i586" 159 elif test "x$OPENJDK_$1_CPU" = xarm; then 160 $1_CPU_LDFLAGS_JVM_ONLY="${$1_CPU_LDFLAGS_JVM_ONLY} -fsigned-char" 161 $1_CPU_LDFLAGS="$ARM_ARCH_TYPE_FLAGS $ARM_FLOAT_TYPE_FLAGS" 162 elif test "x$FLAGS_CPU" = xaarch64; then 163 if test "x$HOTSPOT_TARGET_CPU_PORT" = xarm64; then 164 $1_CPU_LDFLAGS_JVM_ONLY="${$1_CPU_LDFLAGS_JVM_ONLY} -fsigned-char" 165 fi 166 fi 167 168 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 169 if test "x${OPENJDK_$1_CPU}" = "xsparcv9"; then 170 $1_CPU_LDFLAGS_JVM_ONLY="-xarch=sparc" 171 fi 172 173 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 174 if test "x${OPENJDK_$1_CPU}" = "xx86"; then 175 $1_CPU_LDFLAGS="-safeseh" 176 # NOTE: Old build added -machine. Probably not needed. 177 $1_CPU_LDFLAGS_JVM_ONLY="-machine:I386" 178 $1_CPU_EXECUTABLE_LDFLAGS="-stack:327680" 179 else 180 $1_CPU_LDFLAGS_JVM_ONLY="-machine:AMD64" 181 $1_CPU_EXECUTABLE_LDFLAGS="-stack:1048576" 182 fi 183 fi 184 185 # JVM_VARIANT_PATH depends on if this is build or target... 186 if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 187 $1_LDFLAGS_JDK_LIBPATH="-libpath:${OUTPUTDIR}/support/modules_libs/java.base" 188 else 189 $1_LDFLAGS_JDK_LIBPATH="-L\$(SUPPORT_OUTPUTDIR)/modules_libs/java.base \ 190 -L\$(SUPPORT_OUTPUTDIR)/modules_libs/java.base/${$1_JVM_VARIANT_PATH}" 191 fi 192 193 # Export variables according to old definitions, prefix with $2 if present. 194 LDFLAGS_JDK_COMMON="$BASIC_LDFLAGS $BASIC_LDFLAGS_JDK_ONLY \ 195 $OS_LDFLAGS_JDK_ONLY $DEBUGLEVEL_LDFLAGS_JDK_ONLY ${$2EXTRA_LDFLAGS}" 196 $2LDFLAGS_JDKLIB="$LDFLAGS_JDK_COMMON $BASIC_LDFLAGS_JDK_LIB_ONLY \ 197 ${$1_LDFLAGS_JDK_LIBPATH} $SHARED_LIBRARY_FLAGS" 198 $2LDFLAGS_JDKEXE="$LDFLAGS_JDK_COMMON $EXECUTABLE_LDFLAGS \ 199 ${$1_CPU_EXECUTABLE_LDFLAGS}" 200 201 $2JVM_LDFLAGS="$BASIC_LDFLAGS $BASIC_LDFLAGS_JVM_ONLY $OS_LDFLAGS_JVM_ONLY \ 202 $DEBUGLEVEL_LDFLAGS $DEBUGLEVEL_LDFLAGS_JVM_ONLY $BASIC_LDFLAGS_ONLYCXX \ 203 ${$1_CPU_LDFLAGS} ${$1_CPU_LDFLAGS_JVM_ONLY} ${$2EXTRA_LDFLAGS}" 204 205 AC_SUBST($2LDFLAGS_JDKLIB) 206 AC_SUBST($2LDFLAGS_JDKEXE) 207 208 AC_SUBST($2JVM_LDFLAGS) 209 ])