boot-jdk.m4 revision 1146:e0a080fd4047
1# 2# Copyright (c) 2011, 2014, 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 $BOOT_JDK did not contain bin/javac; ignoring]) 73 AC_MSG_NOTICE([(This might be an JRE instead of an JDK)]) 74 BOOT_JDK_FOUND=no 75 else 76 # Do we have an rt.jar? (On MacOSX it is called classes.jar) 77 if test ! -f "$BOOT_JDK/jre/lib/rt.jar" && test ! -f "$BOOT_JDK/../Classes/classes.jar"; then 78 AC_MSG_NOTICE([Potential Boot JDK found at $BOOT_JDK did not contain an rt.jar; ignoring]) 79 BOOT_JDK_FOUND=no 80 else 81 # Oh, this is looking good! We probably have found a proper JDK. Is it the correct version? 82 BOOT_JDK_VERSION=`"$BOOT_JDK/bin/java" -version 2>&1 | head -n 1` 83 84 # Extra M4 quote needed to protect [] in grep expression. 85 [FOUND_CORRECT_VERSION=`echo $BOOT_JDK_VERSION | grep '\"1\.[89]\.'`] 86 if test "x$FOUND_CORRECT_VERSION" = x; then 87 AC_MSG_NOTICE([Potential Boot JDK found at $BOOT_JDK is incorrect JDK version ($BOOT_JDK_VERSION); ignoring]) 88 AC_MSG_NOTICE([(Your Boot JDK must be version 8 or 9)]) 89 BOOT_JDK_FOUND=no 90 else 91 # We're done! :-) 92 BOOT_JDK_FOUND=yes 93 BASIC_FIXUP_PATH(BOOT_JDK) 94 AC_MSG_CHECKING([for Boot JDK]) 95 AC_MSG_RESULT([$BOOT_JDK]) 96 AC_MSG_CHECKING([Boot JDK version]) 97 BOOT_JDK_VERSION=`"$BOOT_JDK/bin/java" -version 2>&1 | $TR '\n\r' ' '` 98 AC_MSG_RESULT([$BOOT_JDK_VERSION]) 99 fi # end check jdk version 100 fi # end check rt.jar 101 fi # end check javac 102 fi # end check java 103 fi # end check boot jdk found 104 fi 105]) 106 107# Test: Is bootjdk explicitely set by command line arguments? 108AC_DEFUN([BOOTJDK_CHECK_ARGUMENTS], 109[ 110 if test "x$with_boot_jdk" != x; then 111 BOOT_JDK=$with_boot_jdk 112 BOOT_JDK_FOUND=maybe 113 AC_MSG_NOTICE([Found potential Boot JDK using configure arguments]) 114 fi 115]) 116 117# Test: Is bootjdk available from builddeps? 118AC_DEFUN([BOOTJDK_CHECK_BUILDDEPS], 119[ 120 BDEPS_CHECK_MODULE(BOOT_JDK, bootjdk, xxx, [BOOT_JDK_FOUND=maybe], [BOOT_JDK_FOUND=no]) 121]) 122 123# Test: Is $JAVA_HOME set? 124AC_DEFUN([BOOTJDK_CHECK_JAVA_HOME], 125[ 126 if test "x$JAVA_HOME" != x; then 127 JAVA_HOME_PROCESSED="$JAVA_HOME" 128 BASIC_FIXUP_PATH(JAVA_HOME_PROCESSED) 129 if test ! -d "$JAVA_HOME_PROCESSED"; then 130 AC_MSG_NOTICE([Your JAVA_HOME points to a non-existing directory!]) 131 else 132 # Aha, the user has set a JAVA_HOME 133 # let us use that as the Boot JDK. 134 BOOT_JDK="$JAVA_HOME_PROCESSED" 135 BOOT_JDK_FOUND=maybe 136 AC_MSG_NOTICE([Found potential Boot JDK using JAVA_HOME]) 137 fi 138 fi 139]) 140 141# Test: Is there a java or javac in the PATH, which is a symlink to the JDK? 142AC_DEFUN([BOOTJDK_CHECK_JAVA_IN_PATH_IS_SYMLINK], 143[ 144 AC_PATH_PROG(JAVAC_CHECK, javac) 145 AC_PATH_PROG(JAVA_CHECK, java) 146 BINARY="$JAVAC_CHECK" 147 if test "x$JAVAC_CHECK" = x; then 148 BINARY="$JAVA_CHECK" 149 fi 150 if test "x$BINARY" != x; then 151 # So there is a java(c) binary, it might be part of a JDK. 152 # Lets find the JDK/JRE directory by following symbolic links. 153 # Linux/GNU systems often have links from /usr/bin/java to 154 # /etc/alternatives/java to the real JDK binary. 155 BASIC_REMOVE_SYMBOLIC_LINKS(BINARY) 156 BOOT_JDK=`dirname "$BINARY"` 157 BOOT_JDK=`cd "$BOOT_JDK/.."; pwd` 158 if test -x "$BOOT_JDK/bin/javac" && test -x "$BOOT_JDK/bin/java"; then 159 # Looks like we found ourselves an JDK 160 BOOT_JDK_FOUND=maybe 161 AC_MSG_NOTICE([Found potential Boot JDK using java(c) in PATH]) 162 fi 163 fi 164]) 165 166# Test: Is there a /usr/libexec/java_home? (Typically on MacOSX) 167# $1: Argument to the java_home binary (optional) 168AC_DEFUN([BOOTJDK_CHECK_LIBEXEC_JAVA_HOME], 169[ 170 if test -x /usr/libexec/java_home; then 171 BOOT_JDK=`/usr/libexec/java_home $1` 172 BOOT_JDK_FOUND=maybe 173 AC_MSG_NOTICE([Found potential Boot JDK using /usr/libexec/java_home $1]) 174 fi 175]) 176 177# Test: On MacOS X, can we find a boot jdk using /usr/libexec/java_home? 178AC_DEFUN([BOOTJDK_CHECK_MACOSX_JAVA_LOCATOR], 179[ 180 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 181 # First check at user selected default 182 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_LIBEXEC_JAVA_HOME()]) 183 # If that did not work out (e.g. too old), try explicit versions instead 184 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_LIBEXEC_JAVA_HOME([-v 1.9])]) 185 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_LIBEXEC_JAVA_HOME([-v 1.8])]) 186 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_LIBEXEC_JAVA_HOME([-v 1.7])]) 187 fi 188]) 189 190# Look for a jdk in the given path. If there are multiple, try to select the newest. 191# If found, set BOOT_JDK and BOOT_JDK_FOUND. 192# $1 = Path to directory containing jdk installations. 193# $2 = String to append to the found JDK directory to get the proper JDK home 194AC_DEFUN([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY], 195[ 196 BOOT_JDK_PREFIX="$1" 197 BOOT_JDK_SUFFIX="$2" 198 ALL_JDKS_FOUND=`$LS "$BOOT_JDK_PREFIX" 2> /dev/null | $SORT -r` 199 if test "x$ALL_JDKS_FOUND" != x; then 200 for JDK_TO_TRY in $ALL_JDKS_FOUND ; do 201 BOOTJDK_DO_CHECK([ 202 BOOT_JDK="${BOOT_JDK_PREFIX}/${JDK_TO_TRY}${BOOT_JDK_SUFFIX}" 203 if test -d "$BOOT_JDK"; then 204 BOOT_JDK_FOUND=maybe 205 AC_MSG_NOTICE([Found potential Boot JDK using well-known locations (in $BOOT_JDK_PREFIX/$JDK_TO_TRY)]) 206 fi 207 ]) 208 done 209 fi 210]) 211 212# Call BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY, but use the given 213# environmental variable as base for where to look. 214# $1 Name of an environmal variable, assumed to point to the Program Files directory. 215AC_DEFUN([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY], 216[ 217 if test "x[$]$1" != x; then 218 VIRTUAL_DIR="[$]$1/Java" 219 BASIC_WINDOWS_REWRITE_AS_UNIX_PATH(VIRTUAL_DIR) 220 BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY($VIRTUAL_DIR) 221 fi 222]) 223 224# Test: Is there a JDK installed in default, well-known locations? 225AC_DEFUN([BOOTJDK_CHECK_WELL_KNOWN_LOCATIONS], 226[ 227 if test "x$OPENJDK_TARGET_OS" = xwindows; then 228 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY([ProgramW6432])]) 229 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY([PROGRAMW6432])]) 230 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY([PROGRAMFILES])]) 231 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY([ProgramFiles])]) 232 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY([/cygdrive/c/Program Files/Java])]) 233 elif test "x$OPENJDK_TARGET_OS" = xmacosx; then 234 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY([/Library/Java/JavaVirtualMachines],[/Contents/Home])]) 235 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY([/System/Library/Java/JavaVirtualMachines],[/Contents/Home])]) 236 elif test "x$OPENJDK_TARGET_OS" = xlinux; then 237 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY([/usr/lib/jvm])]) 238 fi 239]) 240 241# Check that a command-line tool in the Boot JDK is correct 242# $1 = name of variable to assign 243# $2 = name of binary 244AC_DEFUN([BOOTJDK_CHECK_TOOL_IN_BOOTJDK], 245[ 246 # Use user overridden value if available, otherwise locate tool in the Boot JDK. 247 BASIC_SETUP_TOOL($1, 248 [ 249 AC_MSG_CHECKING([for $2 in Boot JDK]) 250 $1=$BOOT_JDK/bin/$2 251 if test ! -x [$]$1; then 252 AC_MSG_RESULT(not found) 253 AC_MSG_NOTICE([Your Boot JDK seems broken. This might be fixed by explicitely setting --with-boot-jdk]) 254 AC_MSG_ERROR([Could not find $2 in the Boot JDK]) 255 fi 256 AC_MSG_RESULT(ok) 257 AC_SUBST($1) 258 ]) 259]) 260 261############################################################################### 262# 263# We need a Boot JDK to bootstrap the build. 264# 265 266AC_DEFUN_ONCE([BOOTJDK_SETUP_BOOT_JDK], 267[ 268 BOOT_JDK_FOUND=no 269 AC_ARG_WITH(boot-jdk, [AS_HELP_STRING([--with-boot-jdk], 270 [path to Boot JDK (used to bootstrap build) @<:@probed@:>@])]) 271 272 # We look for the Boot JDK through various means, going from more certain to 273 # more of a guess-work. After each test, BOOT_JDK_FOUND is set to "yes" if 274 # we detected something (if so, the path to the jdk is in BOOT_JDK). But we 275 # must check if this is indeed valid; otherwise we'll continue looking. 276 277 # Test: Is bootjdk explicitely set by command line arguments? 278 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_ARGUMENTS]) 279 if test "x$with_boot_jdk" != x && test "x$BOOT_JDK_FOUND" = xno; then 280 # Having specified an argument which is incorrect will produce an instant failure; 281 # we should not go on looking 282 AC_MSG_ERROR([The path given by --with-boot-jdk does not contain a valid Boot JDK]) 283 fi 284 285 # Test: Is bootjdk available from builddeps? 286 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_BUILDDEPS]) 287 288 # Test: On MacOS X, can we find a boot jdk using /usr/libexec/java_home? 289 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_MACOSX_JAVA_LOCATOR]) 290 291 # Test: Is $JAVA_HOME set? 292 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_JAVA_HOME]) 293 294 # Test: Is there a java or javac in the PATH, which is a symlink to the JDK? 295 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_JAVA_IN_PATH_IS_SYMLINK]) 296 297 # Test: Is there a JDK installed in default, well-known locations? 298 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_WELL_KNOWN_LOCATIONS]) 299 300 # If we haven't found anything yet, we've truly lost. Give up. 301 if test "x$BOOT_JDK_FOUND" = xno; then 302 HELP_MSG_MISSING_DEPENDENCY([openjdk]) 303 AC_MSG_NOTICE([Could not find a valid Boot JDK. $HELP_MSG]) 304 AC_MSG_NOTICE([This might be fixed by explicitely setting --with-boot-jdk]) 305 AC_MSG_ERROR([Cannot continue]) 306 fi 307 308 # Setup proper paths for what we found 309 BOOT_RTJAR="$BOOT_JDK/jre/lib/rt.jar" 310 if test ! -f "$BOOT_RTJAR"; then 311 # On MacOSX it is called classes.jar 312 BOOT_RTJAR="$BOOT_JDK/../Classes/classes.jar" 313 if test -f "$BOOT_RTJAR"; then 314 # Remove the .. 315 BOOT_RTJAR="`cd ${BOOT_RTJAR%/*} && pwd`/${BOOT_RTJAR##*/}" 316 fi 317 fi 318 BOOT_TOOLSJAR="$BOOT_JDK/lib/tools.jar" 319 BOOT_JDK="$BOOT_JDK" 320 AC_SUBST(BOOT_RTJAR) 321 AC_SUBST(BOOT_TOOLSJAR) 322 AC_SUBST(BOOT_JDK) 323 324 # Setup tools from the Boot JDK. 325 BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JAVA, java) 326 BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JAVAC, javac) 327 BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JAVAH, javah) 328 BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JAR, jar) 329 BOOTJDK_CHECK_TOOL_IN_BOOTJDK(NATIVE2ASCII, native2ascii) 330 BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JARSIGNER, jarsigner) 331 332 # Finally, set some other options... 333 334 # When compiling code to be executed by the Boot JDK, force jdk8 compatibility. 335 BOOT_JDK_SOURCETARGET="-source 8 -target 8" 336 AC_SUBST(BOOT_JDK_SOURCETARGET) 337 AC_SUBST(JAVAC_FLAGS) 338]) 339 340AC_DEFUN_ONCE([BOOTJDK_SETUP_BOOT_JDK_ARGUMENTS], 341[ 342 ############################################################################## 343 # 344 # Specify jvm options for anything that is run with the Boot JDK. 345 # Not all JVM:s accept the same arguments on the command line. 346 # 347 AC_ARG_WITH(boot-jdk-jvmargs, [AS_HELP_STRING([--with-boot-jdk-jvmargs], 348 [specify JVM arguments to be passed to all java invocations of boot JDK, overriding the default values, 349 e.g --with-boot-jdk-jvmargs="-Xmx8G -enableassertions"])]) 350 351 AC_MSG_CHECKING([flags for boot jdk java command] ) 352 353 # Disable special log output when a debug build is used as Boot JDK... 354 ADD_JVM_ARG_IF_OK([-XX:-PrintVMOptions -XX:-UnlockDiagnosticVMOptions -XX:-LogVMOutput],boot_jdk_jvmargs,[$JAVA]) 355 356 # Apply user provided options. 357 ADD_JVM_ARG_IF_OK([$with_boot_jdk_jvmargs],boot_jdk_jvmargs,[$JAVA]) 358 359 AC_MSG_RESULT([$boot_jdk_jvmargs]) 360 361 # For now, general JAVA_FLAGS are the same as the boot jdk jvmargs 362 JAVA_FLAGS=$boot_jdk_jvmargs 363 AC_SUBST(JAVA_FLAGS) 364 365 366 AC_MSG_CHECKING([flags for boot jdk java command for big workloads]) 367 368 # Starting amount of heap memory. 369 ADD_JVM_ARG_IF_OK([-Xms64M],boot_jdk_jvmargs_big,[$JAVA]) 370 371 # Maximum amount of heap memory. 372 # Maximum stack size. 373 JVM_MAX_HEAP=`expr $MEMORY_SIZE / 2` 374 if test "x$BUILD_NUM_BITS" = x32; then 375 if test "$JVM_MAX_HEAP" -gt "1100"; then 376 JVM_MAX_HEAP=1100 377 elif test "$JVM_MAX_HEAP" -lt "512"; then 378 JVM_MAX_HEAP=512 379 fi 380 STACK_SIZE=768 381 else 382 # Running Javac on a JVM on a 64-bit machine, takes more space since 64-bit 383 # pointers are used. Apparently, we need to increase the heap and stack 384 # space for the jvm. More specifically, when running javac to build huge 385 # jdk batch 386 if test "$JVM_MAX_HEAP" -gt "1600"; then 387 JVM_MAX_HEAP=1600 388 elif test "$JVM_MAX_HEAP" -lt "512"; then 389 JVM_MAX_HEAP=512 390 fi 391 STACK_SIZE=1536 392 fi 393 ADD_JVM_ARG_IF_OK([-Xmx${JVM_MAX_HEAP}M],boot_jdk_jvmargs_big,[$JAVA]) 394 ADD_JVM_ARG_IF_OK([-XX:ThreadStackSize=$STACK_SIZE],boot_jdk_jvmargs_big,[$JAVA]) 395 396 AC_MSG_RESULT([$boot_jdk_jvmargs_big]) 397 398 JAVA_FLAGS_BIG=$boot_jdk_jvmargs_big 399 AC_SUBST(JAVA_FLAGS_BIG) 400 401 402 AC_MSG_CHECKING([flags for boot jdk java command for small workloads]) 403 404 # Use serial gc for small short lived tools if possible 405 ADD_JVM_ARG_IF_OK([-XX:+UseSerialGC],boot_jdk_jvmargs_small,[$JAVA]) 406 ADD_JVM_ARG_IF_OK([-Xms32M],boot_jdk_jvmargs_small,[$JAVA]) 407 ADD_JVM_ARG_IF_OK([-Xmx512M],boot_jdk_jvmargs_small,[$JAVA]) 408 409 AC_MSG_RESULT([$boot_jdk_jvmargs_small]) 410 411 JAVA_FLAGS_SMALL=$boot_jdk_jvmargs_small 412 AC_SUBST(JAVA_FLAGS_SMALL) 413 414 JAVA_TOOL_FLAGS_SMALL="" 415 for f in $JAVA_FLAGS_SMALL; do 416 JAVA_TOOL_FLAGS_SMALL="$JAVA_TOOL_FLAGS_SMALL -J$f" 417 done 418 AC_SUBST(JAVA_TOOL_FLAGS_SMALL) 419]) 420