boot-jdk.m4 revision 1670:ee11e7837c17
1# 2# Copyright (c) 2011, 2015, 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# This file handles detection of the Boot JDK. The Boot JDK detection 28# process has been developed as a response to solve a complex real-world 29# problem. Initially, it was simple, but it has grown as platform after 30# platform, idiosyncracy after idiosyncracy has been supported. 31# 32# The basic idea is this: 33# 1) You need an acceptable *) JDK to use as a Boot JDK 34# 2) There are several ways to locate a JDK, that are mostly platform 35# dependent **) 36# 3) You can have multiple JDKs installed 37# 4) If possible, configure should try to dig out an acceptable JDK 38# automatically, without having to resort to command-line options 39# 40# *) acceptable means e.g. JDK7 for building JDK8, a complete JDK (with 41# javac) and not a JRE, etc. 42# 43# **) On Windows we typically use a well-known path. 44# On MacOSX we typically use the tool java_home. 45# On Linux we typically find javac in the $PATH, and then follow a 46# chain of symlinks that often ends up in a real JDK. 47# 48# This leads to the code where we check in different ways to locate a 49# JDK, and if one is found, check if it is acceptable. If not, we print 50# our reasons for rejecting it (useful when debugging non-working 51# configure situations) and continue checking the next one. 52######################################################################## 53 54# Execute the check given as argument, and verify the result 55# If the Boot JDK was previously found, do nothing 56# $1 A command line (typically autoconf macro) to execute 57AC_DEFUN([BOOTJDK_DO_CHECK], 58[ 59 if test "x$BOOT_JDK_FOUND" = xno; then 60 # Now execute the test 61 $1 62 63 # If previous step claimed to have found a JDK, check it to see if it seems to be valid. 64 if test "x$BOOT_JDK_FOUND" = xmaybe; then 65 # Do we have a bin/java? 66 if test ! -x "$BOOT_JDK/bin/java"; then 67 AC_MSG_NOTICE([Potential Boot JDK found at $BOOT_JDK did not contain bin/java; ignoring]) 68 BOOT_JDK_FOUND=no 69 else 70 # Do we have a bin/javac? 71 if test ! -x "$BOOT_JDK/bin/javac"; then 72 AC_MSG_NOTICE([Potential Boot JDK found at $BOOT_JDK did not contain bin/javac; ignoring]) 73 AC_MSG_NOTICE([(This might be an JRE instead of an JDK)]) 74 BOOT_JDK_FOUND=no 75 else 76 # Oh, this is looking good! We probably have found a proper JDK. Is it the correct version? 77 BOOT_JDK_VERSION=`"$BOOT_JDK/bin/java" -version 2>&1 | head -n 1` 78 79 # Extra M4 quote needed to protect [] in grep expression. 80 [FOUND_CORRECT_VERSION=`echo $BOOT_JDK_VERSION | grep '\"1\.[89]\.'`] 81 if test "x$FOUND_CORRECT_VERSION" = x; then 82 AC_MSG_NOTICE([Potential Boot JDK found at $BOOT_JDK is incorrect JDK version ($BOOT_JDK_VERSION); ignoring]) 83 AC_MSG_NOTICE([(Your Boot JDK must be version 8 or 9)]) 84 BOOT_JDK_FOUND=no 85 else 86 # We're done! :-) 87 BOOT_JDK_FOUND=yes 88 BASIC_FIXUP_PATH(BOOT_JDK) 89 AC_MSG_CHECKING([for Boot JDK]) 90 AC_MSG_RESULT([$BOOT_JDK]) 91 AC_MSG_CHECKING([Boot JDK version]) 92 BOOT_JDK_VERSION=`"$BOOT_JDK/bin/java" -version 2>&1 | $TR '\n\r' ' '` 93 AC_MSG_RESULT([$BOOT_JDK_VERSION]) 94 fi # end check jdk version 95 fi # end check javac 96 fi # end check java 97 fi # end check boot jdk found 98 fi 99]) 100 101# Test: Is bootjdk explicitely set by command line arguments? 102AC_DEFUN([BOOTJDK_CHECK_ARGUMENTS], 103[ 104 if test "x$with_boot_jdk" != x; then 105 BOOT_JDK=$with_boot_jdk 106 BOOT_JDK_FOUND=maybe 107 AC_MSG_NOTICE([Found potential Boot JDK using configure arguments]) 108 fi 109]) 110 111# Test: Is $JAVA_HOME set? 112AC_DEFUN([BOOTJDK_CHECK_JAVA_HOME], 113[ 114 if test "x$JAVA_HOME" != x; then 115 JAVA_HOME_PROCESSED="$JAVA_HOME" 116 BASIC_FIXUP_PATH(JAVA_HOME_PROCESSED) 117 if test ! -d "$JAVA_HOME_PROCESSED"; then 118 AC_MSG_NOTICE([Your JAVA_HOME points to a non-existing directory!]) 119 else 120 # Aha, the user has set a JAVA_HOME 121 # let us use that as the Boot JDK. 122 BOOT_JDK="$JAVA_HOME_PROCESSED" 123 BOOT_JDK_FOUND=maybe 124 AC_MSG_NOTICE([Found potential Boot JDK using JAVA_HOME]) 125 fi 126 fi 127]) 128 129# Test: Is there a java or javac in the PATH, which is a symlink to the JDK? 130AC_DEFUN([BOOTJDK_CHECK_JAVA_IN_PATH_IS_SYMLINK], 131[ 132 AC_PATH_PROG(JAVAC_CHECK, javac) 133 AC_PATH_PROG(JAVA_CHECK, java) 134 BINARY="$JAVAC_CHECK" 135 if test "x$JAVAC_CHECK" = x; then 136 BINARY="$JAVA_CHECK" 137 fi 138 if test "x$BINARY" != x; then 139 # So there is a java(c) binary, it might be part of a JDK. 140 # Lets find the JDK/JRE directory by following symbolic links. 141 # Linux/GNU systems often have links from /usr/bin/java to 142 # /etc/alternatives/java to the real JDK binary. 143 BASIC_REMOVE_SYMBOLIC_LINKS(BINARY) 144 BOOT_JDK=`dirname "$BINARY"` 145 BOOT_JDK=`cd "$BOOT_JDK/.."; pwd` 146 if test -x "$BOOT_JDK/bin/javac" && test -x "$BOOT_JDK/bin/java"; then 147 # Looks like we found ourselves an JDK 148 BOOT_JDK_FOUND=maybe 149 AC_MSG_NOTICE([Found potential Boot JDK using java(c) in PATH]) 150 fi 151 fi 152]) 153 154# Test: Is there a /usr/libexec/java_home? (Typically on MacOSX) 155# $1: Argument to the java_home binary (optional) 156AC_DEFUN([BOOTJDK_CHECK_LIBEXEC_JAVA_HOME], 157[ 158 if test -x /usr/libexec/java_home; then 159 BOOT_JDK=`/usr/libexec/java_home $1` 160 BOOT_JDK_FOUND=maybe 161 AC_MSG_NOTICE([Found potential Boot JDK using /usr/libexec/java_home $1]) 162 fi 163]) 164 165# Test: On MacOS X, can we find a boot jdk using /usr/libexec/java_home? 166AC_DEFUN([BOOTJDK_CHECK_MACOSX_JAVA_LOCATOR], 167[ 168 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 169 # First check at user selected default 170 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_LIBEXEC_JAVA_HOME()]) 171 # If that did not work out (e.g. too old), try explicit versions instead 172 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_LIBEXEC_JAVA_HOME([-v 1.9])]) 173 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_LIBEXEC_JAVA_HOME([-v 1.8])]) 174 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_LIBEXEC_JAVA_HOME([-v 1.7])]) 175 fi 176]) 177 178# Look for a jdk in the given path. If there are multiple, try to select the newest. 179# If found, set BOOT_JDK and BOOT_JDK_FOUND. 180# $1 = Path to directory containing jdk installations. 181# $2 = String to append to the found JDK directory to get the proper JDK home 182AC_DEFUN([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY], 183[ 184 BOOT_JDK_PREFIX="$1" 185 BOOT_JDK_SUFFIX="$2" 186 ALL_JDKS_FOUND=`$LS "$BOOT_JDK_PREFIX" 2> /dev/null | $SORT -r` 187 if test "x$ALL_JDKS_FOUND" != x; then 188 for JDK_TO_TRY in $ALL_JDKS_FOUND ; do 189 BOOTJDK_DO_CHECK([ 190 BOOT_JDK="${BOOT_JDK_PREFIX}/${JDK_TO_TRY}${BOOT_JDK_SUFFIX}" 191 if test -d "$BOOT_JDK"; then 192 BOOT_JDK_FOUND=maybe 193 AC_MSG_NOTICE([Found potential Boot JDK using well-known locations (in $BOOT_JDK_PREFIX/$JDK_TO_TRY)]) 194 fi 195 ]) 196 done 197 fi 198]) 199 200# Call BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY, but use the given 201# environmental variable as base for where to look. 202# $1 Name of an environmal variable, assumed to point to the Program Files directory. 203AC_DEFUN([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY], 204[ 205 if test "x[$]$1" != x; then 206 VIRTUAL_DIR="[$]$1/Java" 207 BASIC_WINDOWS_REWRITE_AS_UNIX_PATH(VIRTUAL_DIR) 208 BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY($VIRTUAL_DIR) 209 fi 210]) 211 212# Test: Is there a JDK installed in default, well-known locations? 213AC_DEFUN([BOOTJDK_CHECK_WELL_KNOWN_LOCATIONS], 214[ 215 if test "x$OPENJDK_TARGET_OS" = xwindows; then 216 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY([ProgramW6432])]) 217 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY([PROGRAMW6432])]) 218 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY([PROGRAMFILES])]) 219 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY([ProgramFiles])]) 220 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY([/cygdrive/c/Program Files/Java])]) 221 elif test "x$OPENJDK_TARGET_OS" = xmacosx; then 222 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY([/Library/Java/JavaVirtualMachines],[/Contents/Home])]) 223 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY([/System/Library/Java/JavaVirtualMachines],[/Contents/Home])]) 224 elif test "x$OPENJDK_TARGET_OS" = xlinux; then 225 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY([/usr/lib/jvm])]) 226 fi 227]) 228 229# Check that a command-line tool in the Boot JDK is correct 230# $1 = name of variable to assign 231# $2 = name of binary 232AC_DEFUN([BOOTJDK_CHECK_TOOL_IN_BOOTJDK], 233[ 234 # Use user overridden value if available, otherwise locate tool in the Boot JDK. 235 BASIC_SETUP_TOOL($1, 236 [ 237 AC_MSG_CHECKING([for $2 in Boot JDK]) 238 $1=$BOOT_JDK/bin/$2 239 if test ! -x [$]$1; then 240 AC_MSG_RESULT(not found) 241 AC_MSG_NOTICE([Your Boot JDK seems broken. This might be fixed by explicitely setting --with-boot-jdk]) 242 AC_MSG_ERROR([Could not find $2 in the Boot JDK]) 243 fi 244 AC_MSG_RESULT(ok) 245 AC_SUBST($1) 246 ]) 247]) 248 249############################################################################### 250# 251# We need a Boot JDK to bootstrap the build. 252# 253 254AC_DEFUN_ONCE([BOOTJDK_SETUP_BOOT_JDK], 255[ 256 BOOT_JDK_FOUND=no 257 AC_ARG_WITH(boot-jdk, [AS_HELP_STRING([--with-boot-jdk], 258 [path to Boot JDK (used to bootstrap build) @<:@probed@:>@])]) 259 260 # We look for the Boot JDK through various means, going from more certain to 261 # more of a guess-work. After each test, BOOT_JDK_FOUND is set to "yes" if 262 # we detected something (if so, the path to the jdk is in BOOT_JDK). But we 263 # must check if this is indeed valid; otherwise we'll continue looking. 264 265 # Test: Is bootjdk explicitely set by command line arguments? 266 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_ARGUMENTS]) 267 if test "x$with_boot_jdk" != x && test "x$BOOT_JDK_FOUND" = xno; then 268 # Having specified an argument which is incorrect will produce an instant failure; 269 # we should not go on looking 270 AC_MSG_ERROR([The path given by --with-boot-jdk does not contain a valid Boot JDK]) 271 fi 272 273 # Test: On MacOS X, can we find a boot jdk using /usr/libexec/java_home? 274 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_MACOSX_JAVA_LOCATOR]) 275 276 # Test: Is $JAVA_HOME set? 277 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_JAVA_HOME]) 278 279 # Test: Is there a java or javac in the PATH, which is a symlink to the JDK? 280 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_JAVA_IN_PATH_IS_SYMLINK]) 281 282 # Test: Is there a JDK installed in default, well-known locations? 283 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_WELL_KNOWN_LOCATIONS]) 284 285 # If we haven't found anything yet, we've truly lost. Give up. 286 if test "x$BOOT_JDK_FOUND" = xno; then 287 HELP_MSG_MISSING_DEPENDENCY([openjdk]) 288 AC_MSG_NOTICE([Could not find a valid Boot JDK. $HELP_MSG]) 289 AC_MSG_NOTICE([This might be fixed by explicitely setting --with-boot-jdk]) 290 AC_MSG_ERROR([Cannot continue]) 291 fi 292 293 AC_SUBST(BOOT_JDK) 294 295 # Setup tools from the Boot JDK. 296 BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JAVA, java) 297 BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JAVAC, javac) 298 BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JAVAH, javah) 299 BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JAR, jar) 300 BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JARSIGNER, jarsigner) 301 302 # Finally, set some other options... 303 304 # When compiling code to be executed by the Boot JDK, force jdk8 compatibility. 305 BOOT_JDK_SOURCETARGET="-source 8 -target 8" 306 AC_SUBST(BOOT_JDK_SOURCETARGET) 307 AC_SUBST(JAVAC_FLAGS) 308]) 309 310AC_DEFUN_ONCE([BOOTJDK_SETUP_BOOT_JDK_ARGUMENTS], 311[ 312 ############################################################################## 313 # 314 # Specify jvm options for anything that is run with the Boot JDK. 315 # Not all JVM:s accept the same arguments on the command line. 316 # 317 AC_ARG_WITH(boot-jdk-jvmargs, [AS_HELP_STRING([--with-boot-jdk-jvmargs], 318 [specify JVM arguments to be passed to all java invocations of boot JDK, overriding the default values, 319 e.g --with-boot-jdk-jvmargs="-Xmx8G -enableassertions"])]) 320 321 AC_MSG_CHECKING([flags for boot jdk java command] ) 322 323 # Disable special log output when a debug build is used as Boot JDK... 324 ADD_JVM_ARG_IF_OK([-XX:-PrintVMOptions -XX:-UnlockDiagnosticVMOptions -XX:-LogVMOutput],boot_jdk_jvmargs,[$JAVA]) 325 326 # Apply user provided options. 327 ADD_JVM_ARG_IF_OK([$with_boot_jdk_jvmargs],boot_jdk_jvmargs,[$JAVA]) 328 329 AC_MSG_RESULT([$boot_jdk_jvmargs]) 330 331 # For now, general JAVA_FLAGS are the same as the boot jdk jvmargs 332 JAVA_FLAGS=$boot_jdk_jvmargs 333 AC_SUBST(JAVA_FLAGS) 334 335 336 AC_MSG_CHECKING([flags for boot jdk java command for big workloads]) 337 338 # Starting amount of heap memory. 339 ADD_JVM_ARG_IF_OK([-Xms64M],boot_jdk_jvmargs_big,[$JAVA]) 340 341 # Maximum amount of heap memory. 342 # Maximum stack size. 343 JVM_MAX_HEAP=`expr $MEMORY_SIZE / 2` 344 if test "x$BUILD_NUM_BITS" = x32; then 345 if test "$JVM_MAX_HEAP" -gt "1100"; then 346 JVM_MAX_HEAP=1100 347 elif test "$JVM_MAX_HEAP" -lt "512"; then 348 JVM_MAX_HEAP=512 349 fi 350 STACK_SIZE=768 351 else 352 # Running Javac on a JVM on a 64-bit machine, takes more space since 64-bit 353 # pointers are used. Apparently, we need to increase the heap and stack 354 # space for the jvm. More specifically, when running javac to build huge 355 # jdk batch 356 if test "$JVM_MAX_HEAP" -gt "1600"; then 357 JVM_MAX_HEAP=1600 358 elif test "$JVM_MAX_HEAP" -lt "512"; then 359 JVM_MAX_HEAP=512 360 fi 361 STACK_SIZE=1536 362 fi 363 ADD_JVM_ARG_IF_OK([-Xmx${JVM_MAX_HEAP}M],boot_jdk_jvmargs_big,[$JAVA]) 364 ADD_JVM_ARG_IF_OK([-XX:ThreadStackSize=$STACK_SIZE],boot_jdk_jvmargs_big,[$JAVA]) 365 366 AC_MSG_RESULT([$boot_jdk_jvmargs_big]) 367 368 JAVA_FLAGS_BIG=$boot_jdk_jvmargs_big 369 AC_SUBST(JAVA_FLAGS_BIG) 370 371 372 AC_MSG_CHECKING([flags for boot jdk java command for small workloads]) 373 374 # Use serial gc for small short lived tools if possible 375 ADD_JVM_ARG_IF_OK([-XX:+UseSerialGC],boot_jdk_jvmargs_small,[$JAVA]) 376 ADD_JVM_ARG_IF_OK([-Xms32M],boot_jdk_jvmargs_small,[$JAVA]) 377 ADD_JVM_ARG_IF_OK([-Xmx512M],boot_jdk_jvmargs_small,[$JAVA]) 378 379 AC_MSG_RESULT([$boot_jdk_jvmargs_small]) 380 381 JAVA_FLAGS_SMALL=$boot_jdk_jvmargs_small 382 AC_SUBST(JAVA_FLAGS_SMALL) 383 384 JAVA_TOOL_FLAGS_SMALL="" 385 for f in $JAVA_FLAGS_SMALL; do 386 JAVA_TOOL_FLAGS_SMALL="$JAVA_TOOL_FLAGS_SMALL -J$f" 387 done 388 AC_SUBST(JAVA_TOOL_FLAGS_SMALL) 389]) 390