1 # 2 # Copyright (c) 2011, 2017, 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 # $1 A command line (typically autoconf macro) to execute 57 AC_DEFUN([BOOTJDK_DO_CHECK], 58 [ 59 if test "x$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 | $EGREP '\"10([\.+-].*)?\"|\"9([\.+-].*)?\"'`] 81 if test "x$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 9 or 10)]) 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 explicitly set by command line arguments? 102 AC_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 $JAVA_HOME set? 112 AC_DEFUN([BOOTJDK_CHECK_JAVA_HOME], 113 [ 114 if test "x$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="$JAVA_HOME_PROCESSED" 123 BOOT_JDK_FOUND=maybe 124 AC_MSG_NOTICE([Found potential Boot JDK using JAVA_HOME]) 125 fi 126 fi 127 ]) 128 129 # Test: Is there a java or javac in the PATH, which is a symlink to the JDK? 130 AC_DEFUN([BOOTJDK_CHECK_JAVA_IN_PATH_IS_SYMLINK], 131 [ 132 AC_PATH_PROG(JAVAC_CHECK, javac) 133 AC_PATH_PROG(JAVA_CHECK, java) 134 BINARY="$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) 156 AC_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 $1]) 162 fi 163 ]) 164 165 # Test: On MacOS X, can we find a boot jdk using /usr/libexec/java_home? 166 AC_DEFUN([BOOTJDK_CHECK_MACOSX_JAVA_LOCATOR], 167 [ 168 if test "x$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 182 AC_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 # $1 Name of an environmal variable, assumed to point to the Program Files directory. 203 AC_DEFUN([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY], 204 [ 205 if test "x[$]$1" != x; then 206 VIRTUAL_DIR="[$]$1/Java" 207 BASIC_WINDOWS_REWRITE_AS_UNIX_PATH(VIRTUAL_DIR) 208 BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY($VIRTUAL_DIR) 209 fi 210 ]) 211 212 # Test: Is there a JDK installed in default, well-known locations? 213 AC_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 232 AC_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 explicitly 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($1) 246 ]) 247 ]) 248 249 ############################################################################### 250 # 251 # We need a Boot JDK to bootstrap the build. 252 # 253 254 AC_DEFUN_ONCE([BOOTJDK_SETUP_BOOT_JDK], 255 [ 256 BOOT_JDK_FOUND=no 257 AC_ARG_WITH(boot-jdk, [AS_HELP_STRING([--with-boot-jdk], 258 [path to Boot JDK (used to bootstrap build) @<:@probed@:>@])]) 259 260 # We look for the Boot JDK through various means, going from more certain to 261 # more of a guess-work. After each test, BOOT_JDK_FOUND is set to "yes" if 262 # we detected something (if so, the path to the jdk is in BOOT_JDK). But we 263 # must check if this is indeed valid; otherwise we'll continue looking. 264 265 # Test: Is bootjdk explicitly set by command line arguments? 266 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_ARGUMENTS]) 267 if test "x$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. $HELP_MSG]) 289 AC_MSG_NOTICE([This might be fixed by explicitly setting --with-boot-jdk]) 290 AC_MSG_ERROR([Cannot continue]) 291 fi 292 293 AC_SUBST(BOOT_JDK) 294 295 # Setup tools from the Boot JDK. 296 BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JAVA, java) 297 BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JAVAC, javac) 298 BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JAVADOC, javadoc) 299 BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JAR, jar) 300 BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JARSIGNER, jarsigner) 301 302 # Finally, set some other options... 303 304 # When compiling code to be executed by the Boot JDK, force compatibility with the 305 # oldest supported bootjdk. 306 BOOT_JDK_SOURCETARGET="-source 9 -target 9" 307 AC_SUBST(BOOT_JDK_SOURCETARGET) 308 309 AC_SUBST(JAVAC_FLAGS) 310 311 # Check if the boot jdk is 32 or 64 bit 312 if "$JAVA" -version 2>&1 | $GREP -q "64-Bit"; then 313 BOOT_JDK_BITS="64" 314 else 315 BOOT_JDK_BITS="32" 316 fi 317 AC_MSG_CHECKING([if Boot JDK is 32 or 64 bits]) 318 AC_MSG_RESULT([$BOOT_JDK_BITS]) 319 320 # Try to enable CDS 321 AC_MSG_CHECKING([for local Boot JDK Class Data Sharing (CDS)]) 322 BOOT_JDK_CDS_ARCHIVE=$CONFIGURESUPPORT_OUTPUTDIR/classes.jsa 323 ADD_JVM_ARG_IF_OK([-XX:+UnlockDiagnosticVMOptions -XX:-VerifySharedSpaces -XX:SharedArchiveFile=$BOOT_JDK_CDS_ARCHIVE],boot_jdk_cds_args,[$JAVA]) 324 325 if test "x$boot_jdk_cds_args" != x; then 326 # Try creating a CDS archive 327 "$JAVA" $boot_jdk_cds_args -Xshare:dump > /dev/null 2>&1 328 if test $? -eq 0; then 329 BOOTJDK_USE_LOCAL_CDS=true 330 AC_MSG_RESULT([yes, created]) 331 else 332 # Generation failed, don't use CDS. 333 BOOTJDK_USE_LOCAL_CDS=false 334 AC_MSG_RESULT([no, creation failed]) 335 fi 336 else 337 BOOTJDK_USE_LOCAL_CDS=false 338 AC_MSG_RESULT([no, -XX:SharedArchiveFile not supported]) 339 fi 340 ]) 341 342 AC_DEFUN_ONCE([BOOTJDK_SETUP_BOOT_JDK_ARGUMENTS], 343 [ 344 ############################################################################## 345 # 346 # Specify jvm options for anything that is run with the Boot JDK. 347 # Not all JVM:s accept the same arguments on the command line. 348 # 349 AC_ARG_WITH(boot-jdk-jvmargs, [AS_HELP_STRING([--with-boot-jdk-jvmargs], 350 [specify JVM arguments to be passed to all java invocations of boot JDK, overriding the default values, 351 e.g --with-boot-jdk-jvmargs="-Xmx8G -enableassertions"])]) 352 353 AC_MSG_CHECKING([flags for boot jdk java command] ) 354 355 # Force en-US environment 356 ADD_JVM_ARG_IF_OK([-Duser.language=en -Duser.country=US],boot_jdk_jvmargs,[$JAVA]) 357 358 if test "x$BOOTJDK_USE_LOCAL_CDS" = xtrue; then 359 # Use our own CDS archive 360 ADD_JVM_ARG_IF_OK([$boot_jdk_cds_args -Xshare:auto],boot_jdk_jvmargs,[$JAVA]) 361 else 362 # Otherwise optimistically use the system-wide one, if one is present 363 ADD_JVM_ARG_IF_OK([-Xshare:auto],boot_jdk_jvmargs,[$JAVA]) 364 fi 365 366 # Apply user provided options. 367 ADD_JVM_ARG_IF_OK([$with_boot_jdk_jvmargs],boot_jdk_jvmargs,[$JAVA]) 368 369 AC_MSG_RESULT([$boot_jdk_jvmargs]) 370 371 # For now, general JAVA_FLAGS are the same as the boot jdk jvmargs 372 JAVA_FLAGS=$boot_jdk_jvmargs 373 AC_SUBST(JAVA_FLAGS) 374 375 AC_MSG_CHECKING([flags for boot jdk java command for big workloads]) 376 377 # Starting amount of heap memory. 378 ADD_JVM_ARG_IF_OK([-Xms64M],boot_jdk_jvmargs_big,[$JAVA]) 379 BOOTCYCLE_JVM_ARGS_BIG=-Xms64M 380 381 # Maximum amount of heap memory and stack size. 382 JVM_HEAP_LIMIT_32="1024" 383 # Running a 64 bit JVM allows for and requires a bigger heap 384 JVM_HEAP_LIMIT_64="1600" 385 STACK_SIZE_32=768 386 STACK_SIZE_64=1536 387 JVM_HEAP_LIMIT_GLOBAL=`expr $MEMORY_SIZE / 2` 388 if test "$JVM_HEAP_LIMIT_GLOBAL" -lt "$JVM_HEAP_LIMIT_32"; then 389 JVM_HEAP_LIMIT_32=$JVM_HEAP_LIMIT_GLOBAL 390 fi 391 if test "$JVM_HEAP_LIMIT_GLOBAL" -lt "$JVM_HEAP_LIMIT_64"; then 392 JVM_HEAP_LIMIT_64=$JVM_HEAP_LIMIT_GLOBAL 393 fi 394 if test "$JVM_HEAP_LIMIT_GLOBAL" -lt "512"; then 395 JVM_HEAP_LIMIT_32=512 396 JVM_HEAP_LIMIT_64=512 397 fi 398 399 if test "x$BOOT_JDK_BITS" = "x32"; then 400 STACK_SIZE=$STACK_SIZE_32 401 JVM_MAX_HEAP=$JVM_HEAP_LIMIT_32 402 else 403 STACK_SIZE=$STACK_SIZE_64 404 JVM_MAX_HEAP=$JVM_HEAP_LIMIT_64 405 fi 406 ADD_JVM_ARG_IF_OK([-Xmx${JVM_MAX_HEAP}M],boot_jdk_jvmargs_big,[$JAVA]) 407 ADD_JVM_ARG_IF_OK([-XX:ThreadStackSize=$STACK_SIZE],boot_jdk_jvmargs_big,[$JAVA]) 408 409 AC_MSG_RESULT([$boot_jdk_jvmargs_big]) 410 411 JAVA_FLAGS_BIG=$boot_jdk_jvmargs_big 412 AC_SUBST(JAVA_FLAGS_BIG) 413 414 if test "x$OPENJDK_TARGET_CPU_BITS" = "x32"; then 415 BOOTCYCLE_MAX_HEAP=$JVM_HEAP_LIMIT_32 416 BOOTCYCLE_STACK_SIZE=$STACK_SIZE_32 417 else 418 BOOTCYCLE_MAX_HEAP=$JVM_HEAP_LIMIT_64 419 BOOTCYCLE_STACK_SIZE=$STACK_SIZE_64 420 fi 421 BOOTCYCLE_JVM_ARGS_BIG="$BOOTCYCLE_JVM_ARGS_BIG -Xmx${BOOTCYCLE_MAX_HEAP}M" 422 BOOTCYCLE_JVM_ARGS_BIG="$BOOTCYCLE_JVM_ARGS_BIG -XX:ThreadStackSize=$BOOTCYCLE_STACK_SIZE" 423 AC_MSG_CHECKING([flags for bootcycle boot jdk java command for big workloads]) 424 AC_MSG_RESULT([$BOOTCYCLE_JVM_ARGS_BIG]) 425 AC_SUBST(BOOTCYCLE_JVM_ARGS_BIG) 426 427 # By default, the main javac compilations use big 428 JAVA_FLAGS_JAVAC="$JAVA_FLAGS_BIG" 429 AC_SUBST(JAVA_FLAGS_JAVAC) 430 431 AC_MSG_CHECKING([flags for boot jdk java command for small workloads]) 432 433 # Use serial gc for small short lived tools if possible 434 ADD_JVM_ARG_IF_OK([-XX:+UseSerialGC],boot_jdk_jvmargs_small,[$JAVA]) 435 ADD_JVM_ARG_IF_OK([-Xms32M],boot_jdk_jvmargs_small,[$JAVA]) 436 ADD_JVM_ARG_IF_OK([-Xmx512M],boot_jdk_jvmargs_small,[$JAVA]) 437 ADD_JVM_ARG_IF_OK([-XX:TieredStopAtLevel=1],boot_jdk_jvmargs_small,[$JAVA]) 438 439 AC_MSG_RESULT([$boot_jdk_jvmargs_small]) 440 441 JAVA_FLAGS_SMALL=$boot_jdk_jvmargs_small 442 AC_SUBST(JAVA_FLAGS_SMALL) 443 444 JAVA_TOOL_FLAGS_SMALL="" 445 for f in $JAVA_FLAGS_SMALL; do 446 JAVA_TOOL_FLAGS_SMALL="$JAVA_TOOL_FLAGS_SMALL -J$f" 447 done 448 AC_SUBST(JAVA_TOOL_FLAGS_SMALL) 449 ]) 450 451 # BUILD_JDK: the location of the latest JDK that can run 452 # on the host system and supports the target class file version 453 # generated in this JDK build. This variable should only be 454 # used after the launchers are built. 455 # 456 457 # Execute the check given as argument, and verify the result. 458 # If the JDK was previously found, do nothing. 459 # $1 A command line (typically autoconf macro) to execute 460 AC_DEFUN([BOOTJDK_CHECK_BUILD_JDK], 461 [ 462 if test "x$BUILD_JDK_FOUND" = xno; then 463 # Execute the test 464 $1 465 466 # If previous step claimed to have found a JDK, check it to see if it seems to be valid. 467 if test "x$BUILD_JDK_FOUND" = xmaybe; then 468 # Do we have a bin/java? 469 if test ! -x "$BUILD_JDK/bin/java"; then 470 AC_MSG_NOTICE([Potential Build JDK found at $BUILD_JDK did not contain bin/java; ignoring]) 471 BUILD_JDK_FOUND=no 472 elif test ! -x "$BUILD_JDK/bin/jlink"; then 473 AC_MSG_NOTICE([Potential Build JDK found at $BUILD_JDK did not contain bin/jlink; ignoring]) 474 BUILD_JDK_FOUND=no 475 elif test ! -x "$BUILD_JDK/bin/jmod"; then 476 AC_MSG_NOTICE([Potential Build JDK found at $BUILD_JDK did not contain bin/jmod; ignoring]) 477 BUILD_JDK_FOUND=no 478 elif test ! -x "$BUILD_JDK/bin/javac"; then 479 # Do we have a bin/javac? 480 AC_MSG_NOTICE([Potential Build JDK found at $BUILD_JDK did not contain bin/javac; ignoring]) 481 AC_MSG_NOTICE([(This might be a JRE instead of an JDK)]) 482 BUILD_JDK_FOUND=no 483 else 484 # Oh, this is looking good! We probably have found a proper JDK. Is it the correct version? 485 BUILD_JDK_VERSION=`"$BUILD_JDK/bin/java" -version 2>&1 | $HEAD -n 1` 486 487 # Extra M4 quote needed to protect [] in grep expression. 488 [FOUND_CORRECT_VERSION=`echo $BUILD_JDK_VERSION | $EGREP '\"10([\.+-].*)?\"'`] 489 if test "x$FOUND_CORRECT_VERSION" = x; then 490 AC_MSG_NOTICE([Potential Build JDK found at $BUILD_JDK is incorrect JDK version ($BUILD_JDK_VERSION); ignoring]) 491 AC_MSG_NOTICE([(Your Build JDK must be version 10)]) 492 BUILD_JDK_FOUND=no 493 else 494 # We're done! 495 BUILD_JDK_FOUND=yes 496 BASIC_FIXUP_PATH(BUILD_JDK) 497 AC_MSG_CHECKING([for Build JDK]) 498 AC_MSG_RESULT([$BUILD_JDK]) 499 AC_MSG_CHECKING([Build JDK version]) 500 BUILD_JDK_VERSION=`"$BUILD_JDK/bin/java" -version 2>&1 | $TR '\n\r' ' '` 501 AC_MSG_RESULT([$BUILD_JDK_VERSION]) 502 fi # end check jdk version 503 fi # end check java 504 fi # end check build jdk found 505 fi 506 ]) 507 508 # By default the BUILD_JDK is the JDK_OUTPUTDIR. If the target architecture 509 # is different than the host system doing the build (e.g. cross-compilation), 510 # a special BUILD_JDK is built as part of the build process. An external 511 # prebuilt BUILD_JDK can also be supplied. 512 AC_DEFUN([BOOTJDK_SETUP_BUILD_JDK], 513 [ 514 AC_ARG_WITH(build-jdk, [AS_HELP_STRING([--with-build-jdk], 515 [path to JDK of same version as is being built@<:@the newly built JDK@:>@])]) 516 517 CREATE_BUILDJDK=false 518 EXTERNAL_BUILDJDK=false 519 BUILD_JDK_FOUND="no" 520 if test "x$with_build_jdk" != "x"; then 521 BOOTJDK_CHECK_BUILD_JDK([ 522 if test "x$with_build_jdk" != x; then 523 BUILD_JDK=$with_build_jdk 524 BUILD_JDK_FOUND=maybe 525 AC_MSG_NOTICE([Found potential Build JDK using configure arguments]) 526 fi]) 527 EXTERNAL_BUILDJDK=true 528 else 529 if test "x$COMPILE_TYPE" = "xcross"; then 530 BUILD_JDK="\$(BUILDJDK_OUTPUTDIR)/jdk" 531 BUILD_JDK_FOUND=yes 532 CREATE_BUILDJDK=true 533 AC_MSG_CHECKING([for Build JDK]) 534 AC_MSG_RESULT([yes, will build it for the host platform]) 535 else 536 BUILD_JDK="\$(JDK_OUTPUTDIR)" 537 BUILD_JDK_FOUND=yes 538 AC_MSG_CHECKING([for Build JDK]) 539 AC_MSG_RESULT([yes, will use output dir]) 540 fi 541 fi 542 543 JMOD="$BUILD_JDK/bin/jmod" 544 JLINK="$BUILD_JDK/bin/jlink" 545 AC_SUBST(JMOD) 546 AC_SUBST(JLINK) 547 548 if test "x$BUILD_JDK_FOUND" != "xyes"; then 549 AC_MSG_CHECKING([for Build JDK]) 550 AC_MSG_RESULT([no]) 551 AC_MSG_ERROR([Could not find a suitable Build JDK]) 552 fi 553 554 AC_SUBST(CREATE_BUILDJDK) 555 AC_SUBST(BUILD_JDK) 556 AC_SUBST(EXTERNAL_BUILDJDK) 557 ])