# # Copyright (c) 2011, 2016, Oracle and/or its affiliates. All rights reserved. # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. # # This code is free software; you can redistribute it and/or modify it # under the terms of the GNU General Public License version 2 only, as # published by the Free Software Foundation. Oracle designates this # particular file as subject to the "Classpath" exception as provided # by Oracle in the LICENSE file that accompanied this code. # # This code is distributed in the hope that it will be useful, but WITHOUT # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License # version 2 for more details (a copy is included in the LICENSE file that # accompanied this code). # # You should have received a copy of the GNU General Public License version # 2 along with this work; if not, write to the Free Software Foundation, # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. # # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA # or visit www.oracle.com if you need additional information or have any # questions. # ######################################################################## # This file handles detection of the Boot JDK. The Boot JDK detection # process has been developed as a response to solve a complex real-world # problem. Initially, it was simple, but it has grown as platform after # platform, idiosyncracy after idiosyncracy has been supported. # # The basic idea is this: # 1) You need an acceptable *) JDK to use as a Boot JDK # 2) There are several ways to locate a JDK, that are mostly platform # dependent **) # 3) You can have multiple JDKs installed # 4) If possible, configure should try to dig out an acceptable JDK # automatically, without having to resort to command-line options # # *) acceptable means e.g. JDK7 for building JDK8, a complete JDK (with # javac) and not a JRE, etc. # # **) On Windows we typically use a well-known path. # On MacOSX we typically use the tool java_home. # On Linux we typically find javac in the $PATH, and then follow a # chain of symlinks that often ends up in a real JDK. # # This leads to the code where we check in different ways to locate a # JDK, and if one is found, check if it is acceptable. If not, we print # our reasons for rejecting it (useful when debugging non-working # configure situations) and continue checking the next one. ######################################################################## # Execute the check given as argument, and verify the result # If the Boot JDK was previously found, do nothing # $1 A command line (typically autoconf macro) to execute AC_DEFUN([BOOTJDK_DO_CHECK], [ if test "x$BOOT_JDK_FOUND" = xno; then # Now execute the test $1 # If previous step claimed to have found a JDK, check it to see if it seems to be valid. if test "x$BOOT_JDK_FOUND" = xmaybe; then # Do we have a bin/java? if test ! -x "$BOOT_JDK/bin/java"; then AC_MSG_NOTICE([Potential Boot JDK found at $BOOT_JDK did not contain bin/java; ignoring]) BOOT_JDK_FOUND=no else # Do we have a bin/javac? if test ! -x "$BOOT_JDK/bin/javac"; then AC_MSG_NOTICE([Potential Boot JDK found at $BOOT_JDK did not contain bin/javac; ignoring]) AC_MSG_NOTICE([(This might be an JRE instead of an JDK)]) BOOT_JDK_FOUND=no else # Oh, this is looking good! We probably have found a proper JDK. Is it the correct version? BOOT_JDK_VERSION=`"$BOOT_JDK/bin/java" -version 2>&1 | head -n 1` # Extra M4 quote needed to protect [] in grep expression. [FOUND_CORRECT_VERSION=`$ECHO $BOOT_JDK_VERSION | $EGREP '\"9([\.+-].*)?\"|(1\.[89]\.)'`] if test "x$FOUND_CORRECT_VERSION" = x; then AC_MSG_NOTICE([Potential Boot JDK found at $BOOT_JDK is incorrect JDK version ($BOOT_JDK_VERSION); ignoring]) AC_MSG_NOTICE([(Your Boot JDK must be version 8 or 9)]) BOOT_JDK_FOUND=no else # We're done! :-) BOOT_JDK_FOUND=yes BASIC_FIXUP_PATH(BOOT_JDK) AC_MSG_CHECKING([for Boot JDK]) AC_MSG_RESULT([$BOOT_JDK]) AC_MSG_CHECKING([Boot JDK version]) BOOT_JDK_VERSION=`"$BOOT_JDK/bin/java" -version 2>&1 | $TR '\n\r' ' '` AC_MSG_RESULT([$BOOT_JDK_VERSION]) fi # end check jdk version fi # end check javac fi # end check java fi # end check boot jdk found fi ]) # Test: Is bootjdk explicitely set by command line arguments? AC_DEFUN([BOOTJDK_CHECK_ARGUMENTS], [ if test "x$with_boot_jdk" != x; then BOOT_JDK=$with_boot_jdk BOOT_JDK_FOUND=maybe AC_MSG_NOTICE([Found potential Boot JDK using configure arguments]) fi ]) # Test: Is $JAVA_HOME set? AC_DEFUN([BOOTJDK_CHECK_JAVA_HOME], [ if test "x$JAVA_HOME" != x; then JAVA_HOME_PROCESSED="$JAVA_HOME" BASIC_FIXUP_PATH(JAVA_HOME_PROCESSED) if test ! -d "$JAVA_HOME_PROCESSED"; then AC_MSG_NOTICE([Your JAVA_HOME points to a non-existing directory!]) else # Aha, the user has set a JAVA_HOME # let us use that as the Boot JDK. BOOT_JDK="$JAVA_HOME_PROCESSED" BOOT_JDK_FOUND=maybe AC_MSG_NOTICE([Found potential Boot JDK using JAVA_HOME]) fi fi ]) # Test: Is there a java or javac in the PATH, which is a symlink to the JDK? AC_DEFUN([BOOTJDK_CHECK_JAVA_IN_PATH_IS_SYMLINK], [ AC_PATH_PROG(JAVAC_CHECK, javac) AC_PATH_PROG(JAVA_CHECK, java) BINARY="$JAVAC_CHECK" if test "x$JAVAC_CHECK" = x; then BINARY="$JAVA_CHECK" fi if test "x$BINARY" != x; then # So there is a java(c) binary, it might be part of a JDK. # Lets find the JDK/JRE directory by following symbolic links. # Linux/GNU systems often have links from /usr/bin/java to # /etc/alternatives/java to the real JDK binary. BASIC_REMOVE_SYMBOLIC_LINKS(BINARY) BOOT_JDK=`dirname "$BINARY"` BOOT_JDK=`cd "$BOOT_JDK/.."; pwd` if test -x "$BOOT_JDK/bin/javac" && test -x "$BOOT_JDK/bin/java"; then # Looks like we found ourselves an JDK BOOT_JDK_FOUND=maybe AC_MSG_NOTICE([Found potential Boot JDK using java(c) in PATH]) fi fi ]) # Test: Is there a /usr/libexec/java_home? (Typically on MacOSX) # $1: Argument to the java_home binary (optional) AC_DEFUN([BOOTJDK_CHECK_LIBEXEC_JAVA_HOME], [ if test -x /usr/libexec/java_home; then BOOT_JDK=`/usr/libexec/java_home $1` BOOT_JDK_FOUND=maybe AC_MSG_NOTICE([Found potential Boot JDK using /usr/libexec/java_home $1]) fi ]) # Test: On MacOS X, can we find a boot jdk using /usr/libexec/java_home? AC_DEFUN([BOOTJDK_CHECK_MACOSX_JAVA_LOCATOR], [ if test "x$OPENJDK_TARGET_OS" = xmacosx; then # First check at user selected default BOOTJDK_DO_CHECK([BOOTJDK_CHECK_LIBEXEC_JAVA_HOME()]) # If that did not work out (e.g. too old), try explicit versions instead BOOTJDK_DO_CHECK([BOOTJDK_CHECK_LIBEXEC_JAVA_HOME([-v 1.9])]) BOOTJDK_DO_CHECK([BOOTJDK_CHECK_LIBEXEC_JAVA_HOME([-v 1.8])]) BOOTJDK_DO_CHECK([BOOTJDK_CHECK_LIBEXEC_JAVA_HOME([-v 1.7])]) fi ]) # Look for a jdk in the given path. If there are multiple, try to select the newest. # If found, set BOOT_JDK and BOOT_JDK_FOUND. # $1 = Path to directory containing jdk installations. # $2 = String to append to the found JDK directory to get the proper JDK home AC_DEFUN([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY], [ BOOT_JDK_PREFIX="$1" BOOT_JDK_SUFFIX="$2" ALL_JDKS_FOUND=`$LS "$BOOT_JDK_PREFIX" 2> /dev/null | $SORT -r` if test "x$ALL_JDKS_FOUND" != x; then for JDK_TO_TRY in $ALL_JDKS_FOUND ; do BOOTJDK_DO_CHECK([ BOOT_JDK="${BOOT_JDK_PREFIX}/${JDK_TO_TRY}${BOOT_JDK_SUFFIX}" if test -d "$BOOT_JDK"; then BOOT_JDK_FOUND=maybe AC_MSG_NOTICE([Found potential Boot JDK using well-known locations (in $BOOT_JDK_PREFIX/$JDK_TO_TRY)]) fi ]) done fi ]) # Call BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY, but use the given # environmental variable as base for where to look. # $1 Name of an environmal variable, assumed to point to the Program Files directory. AC_DEFUN([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY], [ if test "x[$]$1" != x; then VIRTUAL_DIR="[$]$1/Java" BASIC_WINDOWS_REWRITE_AS_UNIX_PATH(VIRTUAL_DIR) BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY($VIRTUAL_DIR) fi ]) # Test: Is there a JDK installed in default, well-known locations? AC_DEFUN([BOOTJDK_CHECK_WELL_KNOWN_LOCATIONS], [ if test "x$OPENJDK_TARGET_OS" = xwindows; then BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY([ProgramW6432])]) BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY([PROGRAMW6432])]) BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY([PROGRAMFILES])]) BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_WINDOWS_VIRTUAL_DIRECTORY([ProgramFiles])]) BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY([/cygdrive/c/Program Files/Java])]) elif test "x$OPENJDK_TARGET_OS" = xmacosx; then BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY([/Library/Java/JavaVirtualMachines],[/Contents/Home])]) BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY([/System/Library/Java/JavaVirtualMachines],[/Contents/Home])]) elif test "x$OPENJDK_TARGET_OS" = xlinux; then BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY([/usr/lib/jvm])]) elif test "x$OPENJDK_TARGET_OS" = xbsd; then BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY([/usr/pkg/java])]) BOOTJDK_DO_CHECK([BOOTJDK_FIND_BEST_JDK_IN_DIRECTORY([/usr/local])]) fi ]) # Check that a command-line tool in the Boot JDK is correct # $1 = name of variable to assign # $2 = name of binary AC_DEFUN([BOOTJDK_CHECK_TOOL_IN_BOOTJDK], [ # Use user overridden value if available, otherwise locate tool in the Boot JDK. BASIC_SETUP_TOOL($1, [ AC_MSG_CHECKING([for $2 in Boot JDK]) $1=$BOOT_JDK/bin/$2 if test ! -x [$]$1; then AC_MSG_RESULT(not found) AC_MSG_NOTICE([Your Boot JDK seems broken. This might be fixed by explicitely setting --with-boot-jdk]) AC_MSG_ERROR([Could not find $2 in the Boot JDK]) fi AC_MSG_RESULT(ok) AC_SUBST($1) ]) ]) ############################################################################### # # We need a Boot JDK to bootstrap the build. # AC_DEFUN_ONCE([BOOTJDK_SETUP_BOOT_JDK], [ BOOT_JDK_FOUND=no AC_ARG_WITH(boot-jdk, [AS_HELP_STRING([--with-boot-jdk], [path to Boot JDK (used to bootstrap build) @<:@probed@:>@])]) # We look for the Boot JDK through various means, going from more certain to # more of a guess-work. After each test, BOOT_JDK_FOUND is set to "yes" if # we detected something (if so, the path to the jdk is in BOOT_JDK). But we # must check if this is indeed valid; otherwise we'll continue looking. # Test: Is bootjdk explicitely set by command line arguments? BOOTJDK_DO_CHECK([BOOTJDK_CHECK_ARGUMENTS]) if test "x$with_boot_jdk" != x && test "x$BOOT_JDK_FOUND" = xno; then # Having specified an argument which is incorrect will produce an instant failure; # we should not go on looking AC_MSG_ERROR([The path given by --with-boot-jdk does not contain a valid Boot JDK]) fi # Test: On MacOS X, can we find a boot jdk using /usr/libexec/java_home? BOOTJDK_DO_CHECK([BOOTJDK_CHECK_MACOSX_JAVA_LOCATOR]) # Test: Is $JAVA_HOME set? BOOTJDK_DO_CHECK([BOOTJDK_CHECK_JAVA_HOME]) # Test: Is there a java or javac in the PATH, which is a symlink to the JDK? BOOTJDK_DO_CHECK([BOOTJDK_CHECK_JAVA_IN_PATH_IS_SYMLINK]) # Test: Is there a JDK installed in default, well-known locations? BOOTJDK_DO_CHECK([BOOTJDK_CHECK_WELL_KNOWN_LOCATIONS]) # If we haven't found anything yet, we've truly lost. Give up. if test "x$BOOT_JDK_FOUND" = xno; then HELP_MSG_MISSING_DEPENDENCY([openjdk]) AC_MSG_NOTICE([Could not find a valid Boot JDK. $HELP_MSG]) AC_MSG_NOTICE([This might be fixed by explicitely setting --with-boot-jdk]) AC_MSG_ERROR([Cannot continue]) fi AC_SUBST(BOOT_JDK) # Setup tools from the Boot JDK. BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JAVA, java) BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JAVAC, javac) BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JAVAH, javah) BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JAR, jar) BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JARSIGNER, jarsigner) # Finally, set some other options... # When compiling code to be executed by the Boot JDK, force jdk8 compatibility. BOOT_JDK_SOURCETARGET="-source 8 -target 8" AC_SUBST(BOOT_JDK_SOURCETARGET) AC_SUBST(JAVAC_FLAGS) # Check if the boot jdk is 32 or 64 bit if "$JAVA" -d64 -version > /dev/null 2>&1; then BOOT_JDK_BITS="64" else BOOT_JDK_BITS="32" fi AC_MSG_CHECKING([if Boot JDK is 32 or 64 bits]) AC_MSG_RESULT([$BOOT_JDK_BITS]) AC_SUBST(BOOT_JDK_BITS) ]) AC_DEFUN_ONCE([BOOTJDK_SETUP_BOOT_JDK_ARGUMENTS], [ ############################################################################## # # Specify jvm options for anything that is run with the Boot JDK. # Not all JVM:s accept the same arguments on the command line. # AC_ARG_WITH(boot-jdk-jvmargs, [AS_HELP_STRING([--with-boot-jdk-jvmargs], [specify JVM arguments to be passed to all java invocations of boot JDK, overriding the default values, e.g --with-boot-jdk-jvmargs="-Xmx8G -enableassertions"])]) AC_MSG_CHECKING([flags for boot jdk java command] ) # Disable special log output when a debug build is used as Boot JDK... ADD_JVM_ARG_IF_OK([-XX:-PrintVMOptions -XX:-UnlockDiagnosticVMOptions -XX:-LogVMOutput],boot_jdk_jvmargs,[$JAVA]) # Apply user provided options. ADD_JVM_ARG_IF_OK([$with_boot_jdk_jvmargs],boot_jdk_jvmargs,[$JAVA]) AC_MSG_RESULT([$boot_jdk_jvmargs]) # For now, general JAVA_FLAGS are the same as the boot jdk jvmargs JAVA_FLAGS=$boot_jdk_jvmargs AC_SUBST(JAVA_FLAGS) AC_MSG_CHECKING([flags for boot jdk java command for big workloads]) # Starting amount of heap memory. ADD_JVM_ARG_IF_OK([-Xms64M],boot_jdk_jvmargs_big,[$JAVA]) # Maximum amount of heap memory. # Maximum stack size. JVM_MAX_HEAP=`expr $MEMORY_SIZE / 2` if test "x$BOOT_JDK_BITS" = "x32"; then if test "$JVM_MAX_HEAP" -gt "1100"; then JVM_MAX_HEAP=1100 elif test "$JVM_MAX_HEAP" -lt "512"; then JVM_MAX_HEAP=512 fi STACK_SIZE=768 else # Running a 64 bit JVM allows for and requires a bigger heap if test "$JVM_MAX_HEAP" -gt "1600"; then JVM_MAX_HEAP=1600 elif test "$JVM_MAX_HEAP" -lt "512"; then JVM_MAX_HEAP=512 fi STACK_SIZE=1536 fi ADD_JVM_ARG_IF_OK([-Xmx${JVM_MAX_HEAP}M],boot_jdk_jvmargs_big,[$JAVA]) ADD_JVM_ARG_IF_OK([-XX:ThreadStackSize=$STACK_SIZE],boot_jdk_jvmargs_big,[$JAVA]) AC_MSG_RESULT([$boot_jdk_jvmargs_big]) JAVA_FLAGS_BIG=$boot_jdk_jvmargs_big AC_SUBST(JAVA_FLAGS_BIG) # By default, the main javac compilations use big JAVA_FLAGS_JAVAC="$JAVA_FLAGS_BIG" AC_SUBST(JAVA_FLAGS_JAVAC) AC_MSG_CHECKING([flags for boot jdk java command for small workloads]) # Use serial gc for small short lived tools if possible ADD_JVM_ARG_IF_OK([-XX:+UseSerialGC],boot_jdk_jvmargs_small,[$JAVA]) ADD_JVM_ARG_IF_OK([-Xms32M],boot_jdk_jvmargs_small,[$JAVA]) ADD_JVM_ARG_IF_OK([-Xmx512M],boot_jdk_jvmargs_small,[$JAVA]) AC_MSG_RESULT([$boot_jdk_jvmargs_small]) JAVA_FLAGS_SMALL=$boot_jdk_jvmargs_small AC_SUBST(JAVA_FLAGS_SMALL) JAVA_TOOL_FLAGS_SMALL="" for f in $JAVA_FLAGS_SMALL; do JAVA_TOOL_FLAGS_SMALL="$JAVA_TOOL_FLAGS_SMALL -J$f" done AC_SUBST(JAVA_TOOL_FLAGS_SMALL) ])