boot-jdk.m4 revision 1775:e1ef7db1e02d
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 | $EGREP '\"9([\.+-].*)?\"|(1\.[89]\.)'`] 81 if test "x$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 bootjdk available from builddeps? 112AC_DEFUN([BOOTJDK_CHECK_BUILDDEPS], 113[ 114 BDEPS_CHECK_MODULE(BOOT_JDK, bootjdk, xxx, [BOOT_JDK_FOUND=maybe], [BOOT_JDK_FOUND=no]) 115]) 116 117# Test: Is $JAVA_HOME set? 118AC_DEFUN([BOOTJDK_CHECK_JAVA_HOME], 119[ 120 if test "x$JAVA_HOME" != x; then 121 JAVA_HOME_PROCESSED="$JAVA_HOME" 122 BASIC_FIXUP_PATH(JAVA_HOME_PROCESSED) 123 if test ! -d "$JAVA_HOME_PROCESSED"; then 124 AC_MSG_NOTICE([Your JAVA_HOME points to a non-existing directory!]) 125 else 126 # Aha, the user has set a JAVA_HOME 127 # let us use that as the Boot JDK. 128 BOOT_JDK="$JAVA_HOME_PROCESSED" 129 BOOT_JDK_FOUND=maybe 130 AC_MSG_NOTICE([Found potential Boot JDK using JAVA_HOME]) 131 fi 132 fi 133]) 134 135# Test: Is there a java or javac in the PATH, which is a symlink to the JDK? 136AC_DEFUN([BOOTJDK_CHECK_JAVA_IN_PATH_IS_SYMLINK], 137[ 138 AC_PATH_PROG(JAVAC_CHECK, javac) 139 AC_PATH_PROG(JAVA_CHECK, java) 140 BINARY="$JAVAC_CHECK" 141 if test "x$JAVAC_CHECK" = x; then 142 BINARY="$JAVA_CHECK" 143 fi 144 if test "x$BINARY" != x; then 145 # So there is a java(c) binary, it might be part of a JDK. 146 # Lets find the JDK/JRE directory by following symbolic links. 147 # Linux/GNU systems often have links from /usr/bin/java to 148 # /etc/alternatives/java to the real JDK binary. 149 BASIC_REMOVE_SYMBOLIC_LINKS(BINARY) 150 BOOT_JDK=`dirname "$BINARY"` 151 BOOT_JDK=`cd "$BOOT_JDK/.."; pwd` 152 if test -x "$BOOT_JDK/bin/javac" && test -x "$BOOT_JDK/bin/java"; then 153 # Looks like we found ourselves an JDK 154 BOOT_JDK_FOUND=maybe 155 AC_MSG_NOTICE([Found potential Boot JDK using java(c) in PATH]) 156 fi 157 fi 158]) 159 160# Test: Is there a /usr/libexec/java_home? (Typically on MacOSX) 161# $1: Argument to the java_home binary (optional) 162AC_DEFUN([BOOTJDK_CHECK_LIBEXEC_JAVA_HOME], 163[ 164 if test -x /usr/libexec/java_home; then 165 BOOT_JDK=`/usr/libexec/java_home $1` 166 BOOT_JDK_FOUND=maybe 167 AC_MSG_NOTICE([Found potential Boot JDK using /usr/libexec/java_home $1]) 168 fi 169]) 170 171# Test: On MacOS X, can we find a boot jdk using /usr/libexec/java_home? 172AC_DEFUN([BOOTJDK_CHECK_MACOSX_JAVA_LOCATOR], 173[ 174 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 175 # First check at user selected default 176 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_LIBEXEC_JAVA_HOME()]) 177 # If that did not work out (e.g. too old), try explicit versions instead 178 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_LIBEXEC_JAVA_HOME([-v 1.9])]) 179 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_LIBEXEC_JAVA_HOME([-v 1.8])]) 180 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_LIBEXEC_JAVA_HOME([-v 1.7])]) 181 fi 182]) 183 184# Look for a jdk in the given path. If there are multiple, try to select the newest. 185# If found, set BOOT_JDK and BOOT_JDK_FOUND. 186# $1 = Path to directory containing jdk installations. 187# $2 = String to append to the found JDK directory to get the proper JDK home 188AC_DEFUN([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY], 189[ 190 BOOT_JDK_PREFIX="$1" 191 BOOT_JDK_SUFFIX="$2" 192 ALL_JDKS_FOUND=`$LS "$BOOT_JDK_PREFIX" 2> /dev/null | $SORT -r` 193 if test "x$ALL_JDKS_FOUND" != x; then 194 for JDK_TO_TRY in $ALL_JDKS_FOUND ; do 195 BOOTJDK_DO_CHECK([ 196 BOOT_JDK="${BOOT_JDK_PREFIX}/${JDK_TO_TRY}${BOOT_JDK_SUFFIX}" 197 if test -d "$BOOT_JDK"; then 198 BOOT_JDK_FOUND=maybe 199 AC_MSG_NOTICE([Found potential Boot JDK using well-known locations (in $BOOT_JDK_PREFIX/$JDK_TO_TRY)]) 200 fi 201 ]) 202 done 203 fi 204]) 205 206# Call BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY, but use the given 207# environmental variable as base for where to look. 208# $1 Name of an environmal variable, assumed to point to the Program Files directory. 209AC_DEFUN([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY], 210[ 211 if test "x[$]$1" != x; then 212 VIRTUAL_DIR="[$]$1/Java" 213 BASIC_WINDOWS_REWRITE_AS_UNIX_PATH(VIRTUAL_DIR) 214 BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY($VIRTUAL_DIR) 215 fi 216]) 217 218# Test: Is there a JDK installed in default, well-known locations? 219AC_DEFUN([BOOTJDK_CHECK_WELL_KNOWN_LOCATIONS], 220[ 221 if test "x$OPENJDK_TARGET_OS" = xwindows; then 222 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY([ProgramW6432])]) 223 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY([PROGRAMW6432])]) 224 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY([PROGRAMFILES])]) 225 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY([ProgramFiles])]) 226 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY([/cygdrive/c/Program Files/Java])]) 227 elif test "x$OPENJDK_TARGET_OS" = xmacosx; then 228 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY([/Library/Java/JavaVirtualMachines],[/Contents/Home])]) 229 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY([/System/Library/Java/JavaVirtualMachines],[/Contents/Home])]) 230 elif test "x$OPENJDK_TARGET_OS" = xlinux; then 231 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY([/usr/lib/jvm])]) 232 fi 233]) 234 235# Check that a command-line tool in the Boot JDK is correct 236# $1 = name of variable to assign 237# $2 = name of binary 238AC_DEFUN([BOOTJDK_CHECK_TOOL_IN_BOOTJDK], 239[ 240 # Use user overridden value if available, otherwise locate tool in the Boot JDK. 241 BASIC_SETUP_TOOL($1, 242 [ 243 AC_MSG_CHECKING([for $2 in Boot JDK]) 244 $1=$BOOT_JDK/bin/$2 245 if test ! -x [$]$1; then 246 AC_MSG_RESULT(not found) 247 AC_MSG_NOTICE([Your Boot JDK seems broken. This might be fixed by explicitely setting --with-boot-jdk]) 248 AC_MSG_ERROR([Could not find $2 in the Boot JDK]) 249 fi 250 AC_MSG_RESULT(ok) 251 AC_SUBST($1) 252 ]) 253]) 254 255############################################################################### 256# 257# We need a Boot JDK to bootstrap the build. 258# 259 260AC_DEFUN_ONCE([BOOTJDK_SETUP_BOOT_JDK], 261[ 262 BOOT_JDK_FOUND=no 263 AC_ARG_WITH(boot-jdk, [AS_HELP_STRING([--with-boot-jdk], 264 [path to Boot JDK (used to bootstrap build) @<:@probed@:>@])]) 265 266 # We look for the Boot JDK through various means, going from more certain to 267 # more of a guess-work. After each test, BOOT_JDK_FOUND is set to "yes" if 268 # we detected something (if so, the path to the jdk is in BOOT_JDK). But we 269 # must check if this is indeed valid; otherwise we'll continue looking. 270 271 # Test: Is bootjdk explicitely set by command line arguments? 272 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_ARGUMENTS]) 273 if test "x$with_boot_jdk" != x && test "x$BOOT_JDK_FOUND" = xno; then 274 # Having specified an argument which is incorrect will produce an instant failure; 275 # we should not go on looking 276 AC_MSG_ERROR([The path given by --with-boot-jdk does not contain a valid Boot JDK]) 277 fi 278 279 # Test: Is bootjdk available from builddeps? 280 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_BUILDDEPS]) 281 282 # Test: On MacOS X, can we find a boot jdk using /usr/libexec/java_home? 283 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_MACOSX_JAVA_LOCATOR]) 284 285 # Test: Is $JAVA_HOME set? 286 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_JAVA_HOME]) 287 288 # Test: Is there a java or javac in the PATH, which is a symlink to the JDK? 289 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_JAVA_IN_PATH_IS_SYMLINK]) 290 291 # Test: Is there a JDK installed in default, well-known locations? 292 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_WELL_KNOWN_LOCATIONS]) 293 294 # If we haven't found anything yet, we've truly lost. Give up. 295 if test "x$BOOT_JDK_FOUND" = xno; then 296 HELP_MSG_MISSING_DEPENDENCY([openjdk]) 297 AC_MSG_NOTICE([Could not find a valid Boot JDK. $HELP_MSG]) 298 AC_MSG_NOTICE([This might be fixed by explicitely setting --with-boot-jdk]) 299 AC_MSG_ERROR([Cannot continue]) 300 fi 301 302 AC_SUBST(BOOT_JDK) 303 304 # Setup tools from the Boot JDK. 305 BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JAVA, java) 306 BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JAVAC, javac) 307 BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JAVAH, javah) 308 BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JAR, jar) 309 BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JARSIGNER, jarsigner) 310 311 # Finally, set some other options... 312 313 # When compiling code to be executed by the Boot JDK, force jdk8 compatibility. 314 BOOT_JDK_SOURCETARGET="-source 8 -target 8" 315 AC_SUBST(BOOT_JDK_SOURCETARGET) 316 AC_SUBST(JAVAC_FLAGS) 317]) 318 319AC_DEFUN_ONCE([BOOTJDK_SETUP_BOOT_JDK_ARGUMENTS], 320[ 321 ############################################################################## 322 # 323 # Specify jvm options for anything that is run with the Boot JDK. 324 # Not all JVM:s accept the same arguments on the command line. 325 # 326 AC_ARG_WITH(boot-jdk-jvmargs, [AS_HELP_STRING([--with-boot-jdk-jvmargs], 327 [specify JVM arguments to be passed to all java invocations of boot JDK, overriding the default values, 328 e.g --with-boot-jdk-jvmargs="-Xmx8G -enableassertions"])]) 329 330 AC_MSG_CHECKING([flags for boot jdk java command] ) 331 332 # Disable special log output when a debug build is used as Boot JDK... 333 ADD_JVM_ARG_IF_OK([-XX:-PrintVMOptions -XX:-UnlockDiagnosticVMOptions -XX:-LogVMOutput],boot_jdk_jvmargs,[$JAVA]) 334 335 # Apply user provided options. 336 ADD_JVM_ARG_IF_OK([$with_boot_jdk_jvmargs],boot_jdk_jvmargs,[$JAVA]) 337 338 AC_MSG_RESULT([$boot_jdk_jvmargs]) 339 340 # For now, general JAVA_FLAGS are the same as the boot jdk jvmargs 341 JAVA_FLAGS=$boot_jdk_jvmargs 342 AC_SUBST(JAVA_FLAGS) 343 344 345 AC_MSG_CHECKING([flags for boot jdk java command for big workloads]) 346 347 # Starting amount of heap memory. 348 ADD_JVM_ARG_IF_OK([-Xms64M],boot_jdk_jvmargs_big,[$JAVA]) 349 350 # Maximum amount of heap memory. 351 # Maximum stack size. 352 JVM_MAX_HEAP=`expr $MEMORY_SIZE / 2` 353 if test "x$BUILD_NUM_BITS" = x32; then 354 if test "$JVM_MAX_HEAP" -gt "1100"; then 355 JVM_MAX_HEAP=1100 356 elif test "$JVM_MAX_HEAP" -lt "512"; then 357 JVM_MAX_HEAP=512 358 fi 359 STACK_SIZE=768 360 else 361 # Running Javac on a JVM on a 64-bit machine, takes more space since 64-bit 362 # pointers are used. Apparently, we need to increase the heap and stack 363 # space for the jvm. More specifically, when running javac to build huge 364 # jdk batch 365 if test "$JVM_MAX_HEAP" -gt "1600"; then 366 JVM_MAX_HEAP=1600 367 elif test "$JVM_MAX_HEAP" -lt "512"; then 368 JVM_MAX_HEAP=512 369 fi 370 STACK_SIZE=1536 371 fi 372 ADD_JVM_ARG_IF_OK([-Xmx${JVM_MAX_HEAP}M],boot_jdk_jvmargs_big,[$JAVA]) 373 ADD_JVM_ARG_IF_OK([-XX:ThreadStackSize=$STACK_SIZE],boot_jdk_jvmargs_big,[$JAVA]) 374 375 AC_MSG_RESULT([$boot_jdk_jvmargs_big]) 376 377 JAVA_FLAGS_BIG=$boot_jdk_jvmargs_big 378 AC_SUBST(JAVA_FLAGS_BIG) 379 380 381 AC_MSG_CHECKING([flags for boot jdk java command for small workloads]) 382 383 # Use serial gc for small short lived tools if possible 384 ADD_JVM_ARG_IF_OK([-XX:+UseSerialGC],boot_jdk_jvmargs_small,[$JAVA]) 385 ADD_JVM_ARG_IF_OK([-Xms32M],boot_jdk_jvmargs_small,[$JAVA]) 386 ADD_JVM_ARG_IF_OK([-Xmx512M],boot_jdk_jvmargs_small,[$JAVA]) 387 388 AC_MSG_RESULT([$boot_jdk_jvmargs_small]) 389 390 JAVA_FLAGS_SMALL=$boot_jdk_jvmargs_small 391 AC_SUBST(JAVA_FLAGS_SMALL) 392 393 JAVA_TOOL_FLAGS_SMALL="" 394 for f in $JAVA_FLAGS_SMALL; do 395 JAVA_TOOL_FLAGS_SMALL="$JAVA_TOOL_FLAGS_SMALL -J$f" 396 done 397 AC_SUBST(JAVA_TOOL_FLAGS_SMALL) 398]) 399