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 "$HAS_GNU_HASH"; then 70 BASIC_LDFLAGS="-Wl,--hash-style=both" 71 LIBJSIG_HASHSTYLE_LDFLAGS="-Wl,--hash-style=both" 72 fi 73 74 # Add -z defs, to forbid undefined symbols in object files. 75 # add relro (mark relocations read only) for all libs 76 BASIC_LDFLAGS="$BASIC_LDFLAGS -Wl,-z,defs -Wl,-z,relro" 77 # s390x : remove unused code+data in link step 78 if test "x$OPENJDK_TARGET_CPU" = xs390x; then 79 BASIC_LDFLAGS="$BASIC_LDFLAGS -Wl,--gc-sections -Wl,--print-gc-sections" 80 fi 81 82 BASIC_LDFLAGS_JVM_ONLY="-Wl,-O1" 83 84 elif test "x$TOOLCHAIN_TYPE" = xclang; then 85 BASIC_LDFLAGS_JVM_ONLY="-mno-omit-leaf-frame-pointer -mstack-alignment=16 \ 86 -fPIC" 87 88 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 89 BASIC_LDFLAGS="-Wl,-z,defs" 90 BASIC_LDFLAGS_ONLYCXX="-norunpath" 91 BASIC_LDFLAGS_ONLYCXX_JDK_ONLY="-xnolib" 92 93 BASIC_LDFLAGS_JDK_ONLY="-ztext" 94 BASIC_LDFLAGS_JVM_ONLY="-library=%none -mt -z noversion" 95 96 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 97 BASIC_LDFLAGS="-b64 -brtl -bnolibpath -bexpall -bernotok -btextpsize:64K \ 98 -bdatapsize:64K -bstackpsize:64K" 99 # libjvm.so has gotten too large for normal TOC size; compile with qpic=large and link with bigtoc 100 BASIC_LDFLAGS_JVM_ONLY="-Wl,-lC_r -bbigtoc" 101 102 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 103 BASIC_LDFLAGS="-nologo -opt:ref" 104 BASIC_LDFLAGS_JDK_ONLY="-incremental:no" 105 BASIC_LDFLAGS_JVM_ONLY="-opt:icf,8 -subsystem:windows" 106 fi 107 108 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then 109 if test -n "$HAS_NOEXECSTACK"; then 110 BASIC_LDFLAGS="$BASIC_LDFLAGS -Wl,-z,noexecstack" 111 fi 112 fi 113 114 # Setup OS-dependent LDFLAGS 115 if test "x$TOOLCHAIN_TYPE" = xclang || test "x$TOOLCHAIN_TYPE" = xgcc; then 116 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 117 # Assume clang or gcc. 118 # FIXME: We should really generalize SET_SHARED_LIBRARY_ORIGIN instead. 119 OS_LDFLAGS_JVM_ONLY="-Wl,-rpath,@loader_path/. -Wl,-rpath,@loader_path/.." 120 OS_LDFLAGS_JDK_ONLY="-mmacosx-version-min=$MACOSX_VERSION_MIN" 121 fi 122 fi 123 124 # Setup debug level-dependent LDFLAGS 125 if test "x$TOOLCHAIN_TYPE" = xgcc; then 126 if test "x$OPENJDK_TARGET_OS" = xlinux; then 127 if test x$DEBUG_LEVEL = xrelease; then 128 DEBUGLEVEL_LDFLAGS_JDK_ONLY="$DEBUGLEVEL_LDFLAGS_JDK_ONLY -Wl,-O1" 129 fi 130 if test x$DEBUG_LEVEL = xslowdebug; then 131 # do relocations at load 132 DEBUGLEVEL_LDFLAGS="-Wl,-z,now" 133 fi 134 fi 135 136 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 137 # We need '-qminimaltoc' or '-qpic=large -bbigtoc' if the TOC overflows. 138 # Hotspot now overflows its 64K TOC (currently only for debug), 139 # so we build with '-qpic=large -bbigtoc'. 140 if test "x$DEBUG_LEVEL" != xrelease; then 141 DEBUGLEVEL_LDFLAGS_JVM_ONLY="$DEBUGLEVEL_LDFLAGS_JVM_ONLY -bbigtoc" 142 fi 143 fi 144 145 # Setup LDFLAGS for linking executables 146 if test "x$TOOLCHAIN_TYPE" = xgcc; then 147 EXECUTABLE_LDFLAGS="$EXECUTABLE_LDFLAGS -Wl,--allow-shlib-undefined" 148 fi 149 150 # Export some intermediate variables for compatibility 151 LDFLAGS_CXX_JDK="$BASIC_LDFLAGS_ONLYCXX $BASIC_LDFLAGS_ONLYCXX_JDK_ONLY $DEBUGLEVEL_LDFLAGS_JDK_ONLY" 152 AC_SUBST(LDFLAGS_CXX_JDK) 153 AC_SUBST(LIBJSIG_HASHSTYLE_LDFLAGS) 154 AC_SUBST(LIBJSIG_NOEXECSTACK_LDFLAGS) 155 ]) 156 157 ################################################################################ 158 # $1 - Either BUILD or TARGET to pick the correct OS/CPU variables to check 159 # conditionals against. 160 # $2 - Optional prefix for each variable defined. 161 AC_DEFUN([FLAGS_SETUP_LDFLAGS_CPU_DEP], 162 [ 163 # Setup CPU-dependent basic LDFLAGS. These can differ between the target and 164 # build toolchain. 165 if test "x$TOOLCHAIN_TYPE" = xgcc; then 166 if test "x${OPENJDK_$1_CPU}" = xx86; then 167 $1_CPU_LDFLAGS_JVM_ONLY="-march=i586" 168 elif test "x$OPENJDK_$1_CPU" = xarm; then 169 $1_CPU_LDFLAGS_JVM_ONLY="${$1_CPU_LDFLAGS_JVM_ONLY} -fsigned-char" 170 $1_CPU_LDFLAGS="$ARM_ARCH_TYPE_FLAGS $ARM_FLOAT_TYPE_FLAGS" 171 elif test "x$FLAGS_CPU" = xaarch64; then 172 if test "x$HOTSPOT_TARGET_CPU_PORT" = xarm64; then 173 $1_CPU_LDFLAGS_JVM_ONLY="${$1_CPU_LDFLAGS_JVM_ONLY} -fsigned-char" 174 fi 175 fi 176 177 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 178 if test "x${OPENJDK_$1_CPU}" = "xsparcv9"; then 179 $1_CPU_LDFLAGS_JVM_ONLY="-xarch=sparc" 180 fi 181 182 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 183 if test "x${OPENJDK_$1_CPU}" = "xx86"; then 184 $1_CPU_LDFLAGS="-safeseh" 185 # NOTE: Old build added -machine. Probably not needed. 186 $1_CPU_LDFLAGS_JVM_ONLY="-machine:I386" 187 $1_CPU_EXECUTABLE_LDFLAGS="-stack:327680" 188 else 189 $1_CPU_LDFLAGS_JVM_ONLY="-machine:AMD64" 190 $1_CPU_EXECUTABLE_LDFLAGS="-stack:1048576" 191 fi 192 fi 193 194 # JVM_VARIANT_PATH depends on if this is build or target... 195 if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 196 $1_LDFLAGS_JDK_LIBPATH="-libpath:${OUTPUTDIR}/support/modules_libs/java.base" 197 else 198 $1_LDFLAGS_JDK_LIBPATH="-L\$(SUPPORT_OUTPUTDIR)/modules_libs/java.base \ 199 -L\$(SUPPORT_OUTPUTDIR)/modules_libs/java.base/${$1_JVM_VARIANT_PATH}" 200 fi 201 202 # Export variables according to old definitions, prefix with $2 if present. 203 LDFLAGS_JDK_COMMON="$BASIC_LDFLAGS $BASIC_LDFLAGS_JDK_ONLY \ 204 $OS_LDFLAGS_JDK_ONLY $DEBUGLEVEL_LDFLAGS_JDK_ONLY ${$2EXTRA_LDFLAGS}" 205 $2LDFLAGS_JDKLIB="$LDFLAGS_JDK_COMMON $BASIC_LDFLAGS_JDK_LIB_ONLY \ 206 ${$1_LDFLAGS_JDK_LIBPATH} $SHARED_LIBRARY_FLAGS" 207 $2LDFLAGS_JDKEXE="$LDFLAGS_JDK_COMMON $EXECUTABLE_LDFLAGS \ 208 ${$1_CPU_EXECUTABLE_LDFLAGS}" 209 210 $2JVM_LDFLAGS="$BASIC_LDFLAGS $BASIC_LDFLAGS_JVM_ONLY $OS_LDFLAGS_JVM_ONLY \ 211 $DEBUGLEVEL_LDFLAGS $DEBUGLEVEL_LDFLAGS_JVM_ONLY $BASIC_LDFLAGS_ONLYCXX \ 212 ${$1_CPU_LDFLAGS} ${$1_CPU_LDFLAGS_JVM_ONLY} ${$2EXTRA_LDFLAGS}" 213 214 AC_SUBST($2LDFLAGS_JDKLIB) 215 AC_SUBST($2LDFLAGS_JDKEXE) 216 217 AC_SUBST($2JVM_LDFLAGS) 218 ])