#

# Copyright (c) 2011, 2012, 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.

#

# 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 

          # Do we have an rt.jar? (On MacOSX it is called classes.jar)

          if test ! -f "$BOOT_JDK/jre/lib/rt.jar" && test ! -f "$BOOT_JDK/../Classes/classes.jar"; then

            AC_MSG_NOTICE([Potential Boot JDK found at $BOOT_JDK did not contain an rt.jar; ignoring])

            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_VERSION_78=`echo $BOOT_JDK_VERSION | grep  '\"1\.[78]\.'`]

            if test "x$FOUND_VERSION_78" = 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 7 or 8)])

              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 rt.jar

        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 bootjdk available from builddeps?

AC_DEFUN([BOOTJDK_CHECK_BUILDDEPS],

[

    BDEPS_CHECK_MODULE(BOOT_JDK, bootjdk, xxx, [BOOT_JDK_FOUND=maybe], [BOOT_JDK_FOUND=no])

])

# 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)

AC_DEFUN([BOOTJDK_CHECK_LIBEXEC_JAVA_HOME],

[

    if test -x /usr/libexec/java_home; then

        BOOT_JDK=`/usr/libexec/java_home`

        BOOT_JDK_FOUND=maybe

        AC_MSG_NOTICE([Found potential Boot JDK using /usr/libexec/java_home])

    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])])

  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],

[

  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)

])

###############################################################################

#

# 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: Is bootjdk available from builddeps?

BOOTJDK_DO_CHECK([BOOTJDK_CHECK_BUILDDEPS])

# Test: Is $JAVA_HOME set?

BOOTJDK_DO_CHECK([BOOTJDK_CHECK_JAVA_HOME])

# Test: Is there a /usr/libexec/java_home? (Typically on MacOSX)

BOOTJDK_DO_CHECK([BOOTJDK_CHECK_LIBEXEC_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

# Setup proper paths for what we found

BOOT_RTJAR="$BOOT_JDK/jre/lib/rt.jar"

if test ! -f "$BOOT_RTJAR"; then

    # On MacOSX it is called classes.jar

    BOOT_RTJAR="$BOOT_JDK/../Classes/classes.jar"

    if test -f "$BOOT_RTJAR"; then

      # Remove the .. 

      BOOT_RTJAR="`cd ${BOOT_RTJAR%/*} && pwd`/${BOOT_RTJAR##*/}"

    fi

fi

BOOT_TOOLSJAR="$BOOT_JDK/lib/tools.jar"

BOOT_JDK="$BOOT_JDK"

AC_SUBST(BOOT_RTJAR)

AC_SUBST(BOOT_TOOLSJAR)

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(JAVAP,javap)

BOOTJDK_CHECK_TOOL_IN_BOOTJDK(JAR,jar)

BOOTJDK_CHECK_TOOL_IN_BOOTJDK(RMIC,rmic)

BOOTJDK_CHECK_TOOL_IN_BOOTJDK(NATIVE2ASCII,native2ascii)

# Finally, set some other options...

# When compiling code to be executed by the Boot JDK, force jdk7 compatibility.

BOOT_JDK_SOURCETARGET="-source 7 -target 7"

AC_SUBST(BOOT_JDK_SOURCETARGET)

AC_SUBST(JAVAC_FLAGS)

])

AC_DEFUN_ONCE([BOOTJDK_SETUP_BOOT_JDK_ARGUMENTS],

[

##############################################################################

#

# Specify options for anything that is run with the Boot JDK.

#

AC_ARG_WITH(boot-jdk-jvmargs, [AS_HELP_STRING([--with-boot-jdk-jvmargs],

	[specify JVM arguments to be passed to all invocations of the Boot JDK, overriding the default values,

     e.g --with-boot-jdk-jvmargs="-Xmx8G -enableassertions"])])

if test "x$with_boot_jdk_jvmargs" = x; then

    # Not all JVM:s accept the same arguments on the command line.

    # OpenJDK specific increase in thread stack for JDK build,

    # well more specifically, when running javac.

    if test "x$BUILD_NUM_BITS" = x32; then

       STACK_SIZE=768

    else

       # Running Javac on a JVM on a 64-bit machine, the stack takes more space

       # since 64-bit pointers are pushed on the stach. Apparently, we need

       # to increase the stack space when javacing the JDK....

       STACK_SIZE=1536

    fi

    # Minimum amount of heap memory.

    ADD_JVM_ARG_IF_OK([-Xms64M],boot_jdk_jvmargs,[$JAVA])

    if test "x$OPENJDK_TARGET_OS" = "xmacosx"; then

        # Why does macosx need more heap? Its the huge JDK batch.

        ADD_JVM_ARG_IF_OK([-Xmx1600M],boot_jdk_jvmargs,[$JAVA])

    else

        ADD_JVM_ARG_IF_OK([-Xmx1100M],boot_jdk_jvmargs,[$JAVA])

    fi

    # When is adding -client something that speeds up the JVM?

    # ADD_JVM_ARG_IF_OK([-client],boot_jdk_jvmargs,[$JAVA])

    ADD_JVM_ARG_IF_OK([-XX:PermSize=32m],boot_jdk_jvmargs,[$JAVA])

    ADD_JVM_ARG_IF_OK([-XX:MaxPermSize=160m],boot_jdk_jvmargs,[$JAVA])

    ADD_JVM_ARG_IF_OK([-XX:ThreadStackSize=$STACK_SIZE],boot_jdk_jvmargs,[$JAVA])

    # 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])

fi

AC_SUBST(BOOT_JDK_JVMARGS, $boot_jdk_jvmargs)

])