1 #
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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
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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
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15 # accompanied this code).
16 #
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20 #
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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, idiosyncrasy after idiosyncrasy 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 "$BOOT_JDK/bin/java" && test ! -x "$BOOT_JDK/bin/java.exe"; 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" && test ! -x "$BOOT_JDK/bin/javac.exe"; then
72 AC_MSG_NOTICE([Potential Boot JDK found at $BOOT_JDK did not contain bin/javac; ignoring])
73 AC_MSG_NOTICE([(This might be an JRE instead of an JDK)])
74 BOOT_JDK_FOUND=no
75 else
76 # Oh, this is looking good! We probably have found a proper JDK. Is it the correct version?
77 java_to_test="$BOOT_JDK/bin/java"
78 UTIL_FIXUP_EXECUTABLE(java_to_test)
79 BOOT_JDK_VERSION_OUTPUT=`$java_to_test $USER_BOOT_JDK_OPTIONS -version 2>&1`
80 # Additional [] needed to keep m4 from mangling shell constructs.
81 [ BOOT_JDK_VERSION=`echo $BOOT_JDK_VERSION_OUTPUT | $AWK '/version "[0-9a-zA-Z\._\-]+"/ {print $ 0; exit;}'` ]
82
83 if [ [[ "$BOOT_JDK_VERSION" =~ "Picked up" ]] ]; then
84 AC_MSG_NOTICE([You have _JAVA_OPTIONS or JAVA_TOOL_OPTIONS set. This can mess up the build. Please use --with-boot-jdk-jvmargs instead.])
85 AC_MSG_NOTICE([Java reports: "$BOOT_JDK_VERSION".])
86 AC_MSG_ERROR([Cannot continue])
87 fi
88 if [ [[ "$BOOT_JDK_VERSION" =~ "Unrecognized option" ]] ]; then
89 AC_MSG_NOTICE([The specified --with-boot-jdk-jvmargs is invalid for the tested java])
90 AC_MSG_NOTICE([Error message: "$BOOT_JDK_VERSION".])
91 AC_MSG_NOTICE([Please fix arguments, or point to an explicit boot JDK which accept these arguments])
92 AC_MSG_ERROR([Cannot continue])
93 fi
94
95 # Extra M4 quote needed to protect [] in grep expression.
96 [FOUND_CORRECT_VERSION=`$ECHO $BOOT_JDK_VERSION \
97 | $EGREP "\"(${DEFAULT_ACCEPTABLE_BOOT_VERSIONS// /|})([\.+-].*)?\""`]
98
99 if test "x$BOOT_JDK_VERSION" = x; then
100 AC_MSG_NOTICE([Potential Boot JDK found at $BOOT_JDK is not a working JDK; ignoring])
101 AC_MSG_NOTICE([Output from java -version was: $BOOT_JDK_VERSION_OUTPUT])
102 BOOT_JDK_FOUND=no
103 elif test "x$FOUND_CORRECT_VERSION" = x; then
104 AC_MSG_NOTICE([Potential Boot JDK found at $BOOT_JDK is incorrect JDK version ($BOOT_JDK_VERSION); ignoring])
105 AC_MSG_NOTICE([(Your Boot JDK version must be one of: $DEFAULT_ACCEPTABLE_BOOT_VERSIONS)])
106 BOOT_JDK_FOUND=no
107 else
108 # We're done! :-)
109 BOOT_JDK_FOUND=yes
110 UTIL_FIXUP_PATH(BOOT_JDK)
111 AC_MSG_CHECKING([for Boot JDK])
112 AC_MSG_RESULT([$BOOT_JDK])
113 AC_MSG_CHECKING([Boot JDK version])
114 BOOT_JDK_VERSION=`$java_to_test $USER_BOOT_JDK_OPTIONS -version 2>&1 | $TR -d '\r'`
115 # This is not a no-op; it will portably convert newline to space
116 BOOT_JDK_VERSION=`$ECHO $BOOT_JDK_VERSION`
117 AC_MSG_RESULT([$BOOT_JDK_VERSION])
118 fi # end check jdk version
119 fi # end check javac
120 fi # end check java
121 fi # end check boot jdk found
122 fi
123 ])
124
125 # Test: Is bootjdk explicitly set by command line arguments?
126 AC_DEFUN([BOOTJDK_CHECK_ARGUMENTS],
127 [
128 if test "x$with_boot_jdk" != x; then
129 BOOT_JDK_ARG="$with_boot_jdk"
130 UTIL_FIXUP_PATH(BOOT_JDK_ARG)
131 if test -d "$BOOT_JDK_ARG"; then
132 BOOT_JDK=$BOOT_JDK_ARG
133 BOOT_JDK_FOUND=maybe
134 elif test -f "$BOOT_JDK_ARG"; then
135 case "$BOOT_JDK_ARG" in
136 *.tar.gz )
137 BOOT_JDK_SUPPORT_DIR=$CONFIGURESUPPORT_OUTPUTDIR/boot-jdk
138 $RM -rf $BOOT_JDK_SUPPORT_DIR
139 $MKDIR -p $BOOT_JDK_SUPPORT_DIR
140 $GUNZIP -c $BOOT_JDK_ARG | $TAR xf - -C $BOOT_JDK_SUPPORT_DIR
141
142 # Try to find javac to determine BOOT_JDK path
143 BOOT_JDK_JAVAC_PATH=`$FIND $BOOT_JDK_SUPPORT_DIR | $GREP "/bin/javac"`
144 if test "x$BOOT_JDK_JAVAC_PATH" != x; then
145 BOOT_JDK_FOUND=maybe
146 BOOT_JDK=$($DIRNAME $($DIRNAME $BOOT_JDK_JAVAC_PATH))
147 else
148 BOOT_JDK_FOUND=no
149 fi
150 ;;
151 * )
152 BOOT_JDK_FOUND=no
153 ;;
154 esac
155 else
156 BOOT_JDK_FOUND=no
157 fi
158 AC_MSG_NOTICE([Found potential Boot JDK using configure arguments])
159 fi
160 ])
161
162 # Test: Is $JAVA_HOME set?
163 AC_DEFUN([BOOTJDK_CHECK_JAVA_HOME],
164 [
165 if test "x$JAVA_HOME" != x; then
166 JAVA_HOME_PROCESSED="$JAVA_HOME"
167 UTIL_FIXUP_PATH(JAVA_HOME_PROCESSED, NOFAIL)
168 if test "x$JAVA_HOME_PROCESSED" = x || test ! -d "$JAVA_HOME_PROCESSED"; then
169 AC_MSG_NOTICE([Your JAVA_HOME points to a non-existing directory!])
170 else
171 # Aha, the user has set a JAVA_HOME
172 # let us use that as the Boot JDK.
173 BOOT_JDK="$JAVA_HOME_PROCESSED"
174 BOOT_JDK_FOUND=maybe
175 AC_MSG_NOTICE([Found potential Boot JDK using JAVA_HOME])
176 fi
177 fi
178 ])
179
180 # Test: Is there a java or javac in the PATH, which is a symlink to the JDK?
181 AC_DEFUN([BOOTJDK_CHECK_JAVA_IN_PATH_IS_SYMLINK],
182 [
183 UTIL_LOOKUP_PROGS(JAVAC_CHECK, javac, , NOFIXPATH)
184 UTIL_LOOKUP_PROGS(JAVA_CHECK, java, , NOFIXPATH)
185 BINARY="$JAVAC_CHECK"
186 if test "x$JAVAC_CHECK" = x; then
187 BINARY="$JAVA_CHECK"
188 fi
189 if test "x$BINARY" != x; then
190 # So there is a java(c) binary, it might be part of a JDK.
191 # Lets find the JDK/JRE directory by following symbolic links.
192 # Linux/GNU systems often have links from /usr/bin/java to
193 # /etc/alternatives/java to the real JDK binary.
194 UTIL_REMOVE_SYMBOLIC_LINKS(BINARY)
195 BOOT_JDK=`dirname "$BINARY"`
196 BOOT_JDK=`cd "$BOOT_JDK/.."; pwd`
197 if test -x "$BOOT_JDK/bin/javac" && test -x "$BOOT_JDK/bin/java"; then
198 # Looks like we found ourselves an JDK
199 BOOT_JDK_FOUND=maybe
200 AC_MSG_NOTICE([Found potential Boot JDK using java(c) in PATH])
201 fi
202 fi
203 ])
204
205 # Test: Is there a /usr/libexec/java_home? (Typically on MacOSX)
206 # $1: Argument to the java_home binary (optional)
207 AC_DEFUN([BOOTJDK_CHECK_LIBEXEC_JAVA_HOME],
208 [
209 if test -x /usr/libexec/java_home; then
210 BOOT_JDK=`/usr/libexec/java_home $1`
211 BOOT_JDK_FOUND=maybe
212 AC_MSG_NOTICE([Found potential Boot JDK using /usr/libexec/java_home $1])
213 fi
214 ])
215
216 # Test: On MacOS X, can we find a boot jdk using /usr/libexec/java_home?
217 AC_DEFUN([BOOTJDK_CHECK_MACOSX_JAVA_LOCATOR],
218 [
219 if test "x$OPENJDK_TARGET_OS" = xmacosx; then
220 # First check at user selected default
221 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_LIBEXEC_JAVA_HOME()])
222 # If that did not work out (e.g. too old), try explicit versions instead
223 for ver in $DEFAULT_ACCEPTABLE_BOOT_VERSIONS ; do
224 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_LIBEXEC_JAVA_HOME([-v $ver])])
225 done
226 fi
227 ])
228
229 # Look for a jdk in the given path. If there are multiple, try to select the newest.
230 # If found, set BOOT_JDK and BOOT_JDK_FOUND.
231 # $1 = Path to directory containing jdk installations.
232 # $2 = String to append to the found JDK directory to get the proper JDK home
233 AC_DEFUN([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY],
234 [
235 BOOT_JDK_PREFIX="$1"
236 BOOT_JDK_SUFFIX="$2"
237 ALL_JDKS_FOUND=`$LS "$BOOT_JDK_PREFIX" 2> /dev/null | $SORT -r`
238 if test "x$ALL_JDKS_FOUND" != x; then
239 for JDK_TO_TRY in $ALL_JDKS_FOUND ; do
240 BOOTJDK_DO_CHECK([
241 BOOT_JDK="${BOOT_JDK_PREFIX}/${JDK_TO_TRY}${BOOT_JDK_SUFFIX}"
242 if test -d "$BOOT_JDK"; then
243 BOOT_JDK_FOUND=maybe
244 AC_MSG_NOTICE([Found potential Boot JDK using well-known locations (in $BOOT_JDK_PREFIX/$JDK_TO_TRY)])
245 fi
246 ])
247 done
248 fi
249 ])
250
251 # Call BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY, but use the given
252 # environmental variable as base for where to look.
253 # $1 Name of an environmal variable, assumed to point to the Program Files directory.
254 AC_DEFUN([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY],
255 [
256 if test "x[$]$1" != x; then
257 VIRTUAL_DIR="[$]$1/Java"
258 UTIL_FIXUP_PATH(VIRTUAL_DIR, NOFAIL)
259 if test "x$VIRTUAL_DIR" != x; then
260 BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY($VIRTUAL_DIR)
261 fi
262 fi
263 ])
264
265 # Test: Is there a JDK installed in default, well-known locations?
266 AC_DEFUN([BOOTJDK_CHECK_WELL_KNOWN_LOCATIONS],
267 [
268 if test "x$OPENJDK_TARGET_OS" = xwindows; then
269 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY([ProgramW6432])])
270 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY([PROGRAMW6432])])
271 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY([PROGRAMFILES])])
272 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY([ProgramFiles])])
273 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY([/cygdrive/c/Program Files/Java])])
274 elif test "x$OPENJDK_TARGET_OS" = xmacosx; then
275 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY([/Library/Java/JavaVirtualMachines],[/Contents/Home])])
276 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY([/System/Library/Java/JavaVirtualMachines],[/Contents/Home])])
277 elif test "x$OPENJDK_TARGET_OS" = xlinux; then
278 BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY([/usr/lib/jvm])])
279 fi
280 ])
281
282 # Check that a command-line tool in the Boot JDK is correct
283 # $1 = name of variable to assign
284 # $2 = name of binary
285 AC_DEFUN([BOOTJDK_CHECK_TOOL_IN_BOOTJDK],
286 [
287 # Use user overridden value if available, otherwise locate tool in the Boot JDK.
288 UTIL_REQUIRE_SPECIAL($1,
289 [
290 AC_MSG_CHECKING([for $2 [[Boot JDK]]])
291 $1=$BOOT_JDK/bin/$2
292 if test ! -x [$]$1 && test ! -x [$]$1.exe; then
293 AC_MSG_RESULT(not found)
294 AC_MSG_NOTICE([Your Boot JDK seems broken. This might be fixed by explicitly setting --with-boot-jdk])
295 AC_MSG_ERROR([Could not find $2 in the Boot JDK])
296 fi
297 AC_MSG_RESULT(\[$]BOOT_JDK/bin/$2)
298 UTIL_FIXUP_EXECUTABLE($1)
299 AC_SUBST($1)
300 ])
301 ])
302
303 # Setup CLASSPATH environment variable
304 AC_DEFUN([BOOTJDK_SETUP_CLASSPATH],
305 [
306 AC_ARG_WITH([classpath], [AS_HELP_STRING([--with-classpath],
307 [Optional classpath to set as CLASSPATH to all Java invocations @<:@none@:>@])])
308
309 if test "x$CLASSPATH" != x; then
310 AC_MSG_WARN([CLASSPATH is set in the environment. This will be ignored. Use --with-classpath instead.])
311 fi
312
313 CLASSPATH=
314
315 if test "x$with_classpath" != x && test "x$with_classpath" != xyes &&
316 test "x$with_classpath" != xno ; then
317 CLASSPATH="$with_classpath"
318 AC_MSG_CHECKING([for classpath to use for all Java invocations])
319 AC_MSG_RESULT([$CLASSPATH])
320 fi
321
322 AC_SUBST(CLASSPATH)
323 ])
324
325 ################################################################################
326 #
327 # We need a Boot JDK to bootstrap the build.
328 #
329
330 AC_DEFUN_ONCE([BOOTJDK_SETUP_BOOT_JDK],
331 [
332 BOOT_JDK_FOUND=no
333 AC_ARG_WITH(boot-jdk, [AS_HELP_STRING([--with-boot-jdk],
334 [path to Boot JDK (used to bootstrap build) @<:@probed@:>@])])
335
336 AC_ARG_WITH(boot-jdk-jvmargs, [AS_HELP_STRING([--with-boot-jdk-jvmargs],
337 [specify additional arguments to be passed to Boot JDK tools @<:@none@:>@])])
338
339 USER_BOOT_JDK_OPTIONS="$with_boot_jdk_jvmargs"
340
341 # We look for the Boot JDK through various means, going from more certain to
342 # more of a guess-work. After each test, BOOT_JDK_FOUND is set to "yes" if
343 # we detected something (if so, the path to the jdk is in BOOT_JDK). But we
344 # must check if this is indeed valid; otherwise we'll continue looking.
345
346 # Test: Is bootjdk explicitly set by command line arguments?
347 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_ARGUMENTS])
348 if test "x$with_boot_jdk" != x && test "x$BOOT_JDK_FOUND" = xno; then
349 # Having specified an argument which is incorrect will produce an instant failure;
350 # we should not go on looking
351 AC_MSG_ERROR([The path given by --with-boot-jdk does not contain a valid Boot JDK])
352 fi
353
354 # Test: Is $JAVA_HOME set?
355 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_JAVA_HOME])
356
357 # Test: On MacOS X, can we find a boot jdk using /usr/libexec/java_home?
358 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_MACOSX_JAVA_LOCATOR])
359
360 # Test: Is there a java or javac in the PATH, which is a symlink to the JDK?
361 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_JAVA_IN_PATH_IS_SYMLINK])
362
363 # Test: Is there a JDK installed in default, well-known locations?
364 BOOTJDK_DO_CHECK([BOOTJDK_CHECK_WELL_KNOWN_LOCATIONS])
365
366 # If we haven't found anything yet, we've truly lost. Give up.
367 if test "x$BOOT_JDK_FOUND" = xno; then
368 HELP_MSG_MISSING_DEPENDENCY([openjdk])
369 AC_MSG_NOTICE([Could not find a valid Boot JDK. $HELP_MSG])
370 AC_MSG_NOTICE([This might be fixed by explicitly setting --with-boot-jdk])
371 AC_MSG_ERROR([Cannot continue])
372 fi
373
374 AC_SUBST(BOOT_JDK)
375
376 # Setup tools from the Boot JDK.
377 BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JAVA, java)
378 BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JAVAC, javac)
379 BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JAVADOC, javadoc)
380 BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JAR, jar)
381
382 # Finally, set some other options...
383
384 # Determine if the boot jdk jar supports the --date option
385 if $JAR --help 2>&1 | $GREP -q -e "--date=TIMESTAMP"; then
386 BOOT_JDK_JAR_SUPPORTS_DATE=true
387 else
388 BOOT_JDK_JAR_SUPPORTS_DATE=false
389 fi
390 AC_MSG_CHECKING([if Boot JDK jar supports --date=TIMESTAMP])
391 AC_MSG_RESULT([$BOOT_JDK_JAR_SUPPORTS_DATE])
392 AC_SUBST(BOOT_JDK_JAR_SUPPORTS_DATE)
393
394 # When compiling code to be executed by the Boot JDK, force compatibility with the
395 # oldest supported bootjdk.
396 OLDEST_BOOT_JDK=`$ECHO $DEFAULT_ACCEPTABLE_BOOT_VERSIONS \
397 | $TR " " "\n" | $SORT -n | $HEAD -n1`
398 # -Xlint:-options is added to avoid "warning: [options] system modules path not set in conjunction with -source"
399 BOOT_JDK_SOURCETARGET="-source $OLDEST_BOOT_JDK -target $OLDEST_BOOT_JDK -Xlint:-options"
400 AC_SUBST(BOOT_JDK_SOURCETARGET)
401
402 # Check if the boot jdk is 32 or 64 bit
403 if $JAVA -version 2>&1 | $GREP -q "64-Bit"; then
404 BOOT_JDK_BITS="64"
405 else
406 BOOT_JDK_BITS="32"
407 fi
408 AC_MSG_CHECKING([if Boot JDK is 32 or 64 bits])
409 AC_MSG_RESULT([$BOOT_JDK_BITS])
410
411 # Try to enable CDS
412 AC_MSG_CHECKING([for local Boot JDK Class Data Sharing (CDS)])
413 BOOT_JDK_CDS_ARCHIVE=$CONFIGURESUPPORT_OUTPUTDIR/classes.jsa
414 UTIL_ADD_JVM_ARG_IF_OK([-XX:+UnlockDiagnosticVMOptions -XX:-VerifySharedSpaces -XX:SharedArchiveFile=$BOOT_JDK_CDS_ARCHIVE],boot_jdk_cds_args,[$JAVA])
415
416 if test "x$boot_jdk_cds_args" != x; then
417 # Try creating a CDS archive
418 $JAVA $boot_jdk_cds_args -Xshare:dump > /dev/null 2>&1
419 if test $? -eq 0; then
420 BOOTJDK_USE_LOCAL_CDS=true
421 AC_MSG_RESULT([yes, created])
422 else
423 # Generation failed, don't use CDS.
424 BOOTJDK_USE_LOCAL_CDS=false
425 AC_MSG_RESULT([no, creation failed])
426 fi
427 else
428 BOOTJDK_USE_LOCAL_CDS=false
429 AC_MSG_RESULT([no, -XX:SharedArchiveFile not supported])
430 fi
431
432 BOOTJDK_SETUP_CLASSPATH
433 ])
434
435 AC_DEFUN_ONCE([BOOTJDK_SETUP_BOOT_JDK_ARGUMENTS],
436 [
437 ##############################################################################
438 #
439 # Specify jvm options for anything that is run with the Boot JDK.
440 # Not all JVM:s accept the same arguments on the command line.
441 #
442 AC_MSG_CHECKING([flags for boot jdk java command] )
443
444 # Force en-US environment
445 UTIL_ADD_JVM_ARG_IF_OK([-Duser.language=en -Duser.country=US],boot_jdk_jvmargs,[$JAVA])
446
447 if test "x$BOOTJDK_USE_LOCAL_CDS" = xtrue; then
448 # Use our own CDS archive
449 UTIL_ADD_JVM_ARG_IF_OK([$boot_jdk_cds_args -Xshare:auto],boot_jdk_jvmargs,[$JAVA])
450 else
451 # Otherwise optimistically use the system-wide one, if one is present
452 UTIL_ADD_JVM_ARG_IF_OK([-Xshare:auto],boot_jdk_jvmargs,[$JAVA])
453 fi
454
455 # Finally append user provided options to allow them to override.
456 UTIL_ADD_JVM_ARG_IF_OK([$USER_BOOT_JDK_OPTIONS],boot_jdk_jvmargs,[$JAVA])
457
458 AC_MSG_RESULT([$boot_jdk_jvmargs])
459
460 # For now, general JAVA_FLAGS are the same as the boot jdk jvmargs
461 JAVA_FLAGS=$boot_jdk_jvmargs
462 AC_SUBST(JAVA_FLAGS)
463
464 AC_MSG_CHECKING([flags for boot jdk java command for big workloads])
465
466 # Starting amount of heap memory.
467 UTIL_ADD_JVM_ARG_IF_OK([-Xms64M],boot_jdk_jvmargs_big,[$JAVA])
468 BOOTCYCLE_JVM_ARGS_BIG=-Xms64M
469
470 # Maximum amount of heap memory.
471 JVM_HEAP_LIMIT_32="768"
472 # Running a 64 bit JVM allows for and requires a bigger heap
473 JVM_HEAP_LIMIT_64="3200"
474 JVM_HEAP_LIMIT_GLOBAL=`expr $MEMORY_SIZE / 2`
475 if test "$JVM_HEAP_LIMIT_GLOBAL" -lt "$JVM_HEAP_LIMIT_32"; then
476 JVM_HEAP_LIMIT_32=$JVM_HEAP_LIMIT_GLOBAL
477 fi
478 if test "$JVM_HEAP_LIMIT_GLOBAL" -lt "$JVM_HEAP_LIMIT_64"; then
479 JVM_HEAP_LIMIT_64=$JVM_HEAP_LIMIT_GLOBAL
480 fi
481 if test "$JVM_HEAP_LIMIT_GLOBAL" -lt "512"; then
482 JVM_HEAP_LIMIT_32=512
483 JVM_HEAP_LIMIT_64=512
484 fi
485
486 if test "x$BOOT_JDK_BITS" = "x32"; then
487 JVM_MAX_HEAP=$JVM_HEAP_LIMIT_32
488 else
489 JVM_MAX_HEAP=$JVM_HEAP_LIMIT_64
490 fi
491 UTIL_ADD_JVM_ARG_IF_OK([-Xmx${JVM_MAX_HEAP}M],boot_jdk_jvmargs_big,[$JAVA])
492
493 AC_MSG_RESULT([$boot_jdk_jvmargs_big])
494
495 JAVA_FLAGS_BIG=$boot_jdk_jvmargs_big
496 AC_SUBST(JAVA_FLAGS_BIG)
497
498 if test "x$OPENJDK_TARGET_CPU_BITS" = "x32"; then
499 BOOTCYCLE_MAX_HEAP=$JVM_HEAP_LIMIT_32
500 else
501 BOOTCYCLE_MAX_HEAP=$JVM_HEAP_LIMIT_64
502 fi
503 BOOTCYCLE_JVM_ARGS_BIG="$BOOTCYCLE_JVM_ARGS_BIG -Xmx${BOOTCYCLE_MAX_HEAP}M"
504 AC_MSG_CHECKING([flags for bootcycle boot jdk java command for big workloads])
505 AC_MSG_RESULT([$BOOTCYCLE_JVM_ARGS_BIG])
506 AC_SUBST(BOOTCYCLE_JVM_ARGS_BIG)
507
508 AC_MSG_CHECKING([flags for boot jdk java command for small workloads])
509
510 # Use serial gc for small short lived tools if possible
511 UTIL_ADD_JVM_ARG_IF_OK([-XX:+UseSerialGC],boot_jdk_jvmargs_small,[$JAVA])
512 UTIL_ADD_JVM_ARG_IF_OK([-Xms32M],boot_jdk_jvmargs_small,[$JAVA])
513 UTIL_ADD_JVM_ARG_IF_OK([-Xmx512M],boot_jdk_jvmargs_small,[$JAVA])
514 UTIL_ADD_JVM_ARG_IF_OK([-XX:TieredStopAtLevel=1],boot_jdk_jvmargs_small,[$JAVA])
515
516 AC_MSG_RESULT([$boot_jdk_jvmargs_small])
517
518 JAVA_FLAGS_SMALL=$boot_jdk_jvmargs_small
519 AC_SUBST(JAVA_FLAGS_SMALL)
520
521 # Don't presuppose SerialGC is present in the buildjdk. Also, we cannot test
522 # the buildjdk, but on the other hand we know what it will support.
523 BUILD_JAVA_FLAGS_SMALL="-Xms32M -Xmx512M -XX:TieredStopAtLevel=1"
524 AC_SUBST(BUILD_JAVA_FLAGS_SMALL)
525
526 JAVA_TOOL_FLAGS_SMALL=""
527 for f in $JAVA_FLAGS_SMALL; do
528 JAVA_TOOL_FLAGS_SMALL="$JAVA_TOOL_FLAGS_SMALL -J$f"
529 done
530 AC_SUBST(JAVA_TOOL_FLAGS_SMALL)
531 ])
532
533 # BUILD_JDK: the location of the latest JDK that can run
534 # on the host system and supports the target class file version
535 # generated in this JDK build. This variable should only be
536 # used after the launchers are built.
537 #
538
539 # Execute the check given as argument, and verify the result.
540 # If the JDK was previously found, do nothing.
541 # $1 A command line (typically autoconf macro) to execute
542 AC_DEFUN([BOOTJDK_CHECK_BUILD_JDK],
543 [
544 if test "x$BUILD_JDK_FOUND" = xno; then
545 # Execute the test
546 $1
547
548 # If previous step claimed to have found a JDK, check it to see if it seems to be valid.
549 if test "x$BUILD_JDK_FOUND" = xmaybe; then
550 # Do we have a bin/java?
551 if test ! -x "$BUILD_JDK/bin/java"; then
552 AC_MSG_NOTICE([Potential Build JDK found at $BUILD_JDK did not contain bin/java; ignoring])
553 BUILD_JDK_FOUND=no
554 elif test ! -x "$BUILD_JDK/bin/jlink"; then
555 AC_MSG_NOTICE([Potential Build JDK found at $BUILD_JDK did not contain bin/jlink; ignoring])
556 BUILD_JDK_FOUND=no
557 elif test ! -x "$BUILD_JDK/bin/jmod"; then
558 AC_MSG_NOTICE([Potential Build JDK found at $BUILD_JDK did not contain bin/jmod; ignoring])
559 BUILD_JDK_FOUND=no
560 elif test ! -x "$BUILD_JDK/bin/javac"; then
561 # Do we have a bin/javac?
562 AC_MSG_NOTICE([Potential Build JDK found at $BUILD_JDK did not contain bin/javac; ignoring])
563 AC_MSG_NOTICE([(This might be a JRE instead of an JDK)])
564 BUILD_JDK_FOUND=no
565 else
566 # Oh, this is looking good! We probably have found a proper JDK. Is it the correct version?
567 # Additional [] needed to keep m4 from mangling shell constructs.
568 [ BUILD_JDK_VERSION=`"$BUILD_JDK/bin/java" -version 2>&1 | $AWK '/version "[0-9a-zA-Z\._\-]+"/ {print $ 0; exit;}'` ]
569
570 # Extra M4 quote needed to protect [] in grep expression.
571 [FOUND_CORRECT_VERSION=`echo $BUILD_JDK_VERSION | $EGREP "\"$VERSION_FEATURE([\.+-].*)?\""`]
572 if test "x$FOUND_CORRECT_VERSION" = x; then
573 AC_MSG_NOTICE([Potential Build JDK found at $BUILD_JDK is incorrect JDK version ($BUILD_JDK_VERSION); ignoring])
574 AC_MSG_NOTICE([(Your Build JDK must be version $VERSION_FEATURE)])
575 BUILD_JDK_FOUND=no
576 else
577 # We're done!
578 BUILD_JDK_FOUND=yes
579 UTIL_FIXUP_PATH(BUILD_JDK)
580 AC_MSG_CHECKING([for Build JDK])
581 AC_MSG_RESULT([$BUILD_JDK])
582 AC_MSG_CHECKING([Build JDK version])
583 BUILD_JDK_VERSION=`"$BUILD_JDK/bin/java" -version 2>&1 | $TR '\n\r' ' '`
584 AC_MSG_RESULT([$BUILD_JDK_VERSION])
585 fi # end check jdk version
586 fi # end check java
587 fi # end check build jdk found
588 fi
589 ])
590
591 # By default the BUILD_JDK is the JDK_OUTPUTDIR. If the target architecture
592 # is different than the host system doing the build (e.g. cross-compilation),
593 # a special BUILD_JDK is built as part of the build process. An external
594 # prebuilt BUILD_JDK can also be supplied.
595 AC_DEFUN([BOOTJDK_SETUP_BUILD_JDK],
596 [
597 AC_ARG_WITH(build-jdk, [AS_HELP_STRING([--with-build-jdk],
598 [path to JDK of same version as is being built@<:@the newly built JDK@:>@])])
599
600 CREATE_BUILDJDK=false
601 EXTERNAL_BUILDJDK=false
602 BUILD_JDK_FOUND="no"
603 if test "x$with_build_jdk" != "x"; then
604 BOOTJDK_CHECK_BUILD_JDK([
605 if test "x$with_build_jdk" != x; then
606 BUILD_JDK=$with_build_jdk
607 BUILD_JDK_FOUND=maybe
608 AC_MSG_NOTICE([Found potential Build JDK using configure arguments])
609 fi
610 ])
611 EXTERNAL_BUILDJDK=true
612 else
613 if test "x$COMPILE_TYPE" = "xcross"; then
614 BUILD_JDK="\$(BUILDJDK_OUTPUTDIR)/jdk"
615 BUILD_JDK_FOUND=yes
616 CREATE_BUILDJDK=true
617 AC_MSG_CHECKING([for Build JDK])
618 AC_MSG_RESULT([yes, will build it for the host platform])
619 else
620 BUILD_JDK="\$(JDK_OUTPUTDIR)"
621 BUILD_JDK_FOUND=yes
622 AC_MSG_CHECKING([for Build JDK])
623 AC_MSG_RESULT([yes, will use output dir])
624 fi
625 fi
626
627 # Since these tools do not yet exist, we cannot use UTIL_FIXUP_EXECUTABLE to
628 # detect the need of fixpath
629 JMOD="$BUILD_JDK/bin/jmod"
630 UTIL_ADD_FIXPATH(JMOD)
631 JLINK="$BUILD_JDK/bin/jlink"
632 UTIL_ADD_FIXPATH(JLINK)
633 AC_SUBST(JMOD)
634 AC_SUBST(JLINK)
635
636 if test "x$BUILD_JDK_FOUND" != "xyes"; then
637 AC_MSG_CHECKING([for Build JDK])
638 AC_MSG_RESULT([no])
639 AC_MSG_ERROR([Could not find a suitable Build JDK])
640 fi
641
642 AC_SUBST(CREATE_BUILDJDK)
643 AC_SUBST(BUILD_JDK)
644 AC_SUBST(EXTERNAL_BUILDJDK)
645 ])
646
647 # The docs-reference JDK is used to run javadoc for the docs-reference targets.
648 # If not set, the reference docs will be built using the interim javadoc.
649 AC_DEFUN([BOOTJDK_SETUP_DOCS_REFERENCE_JDK],
650 [
651 AC_ARG_WITH(docs-reference-jdk, [AS_HELP_STRING([--with-docs-reference-jdk],
652 [path to JDK to use for building the reference documentation])])
653
654 AC_MSG_CHECKING([for docs-reference JDK])
655 if test "x$with_docs_reference_jdk" != "x"; then
656 DOCS_REFERENCE_JDK="$with_docs_reference_jdk"
657 AC_MSG_RESULT([$DOCS_REFERENCE_JDK])
658 DOCS_REFERENCE_JAVADOC="$DOCS_REFERENCE_JDK/bin/javadoc"
659 if test ! -x "$DOCS_REFERENCE_JAVADOC"; then
660 AC_MSG_ERROR([docs-reference JDK found at $DOCS_REFERENCE_JDK did not contain bin/javadoc])
661 fi
662 UTIL_FIXUP_EXECUTABLE(DOCS_REFERENCE_JAVADOC)
663 else
664 AC_MSG_RESULT([no, using interim javadoc for the docs-reference targets])
665 # By leaving this empty, Docs.gmk will revert to the default interim javadoc
666 DOCS_REFERENCE_JAVADOC=
667 fi
668
669 AC_SUBST(DOCS_REFERENCE_JAVADOC)
670 ])