#!/bin/bash

#

# Copyright (c) 2012, 2014, 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.

#

# 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.

#

if test "x$1" != xCHECKME; then

  echo "Use the 'configure' script in the top-level directory instead."

fi

conf_script_dir="$TOPDIR/common/autoconf"

if [ "$CUSTOM_CONFIG_DIR" = "" ]; then

  conf_custom_script_dir="$TOPDIR/closed/autoconf"

else

  conf_custom_script_dir="$CUSTOM_CONFIG_DIR"

fi

###

### Test that the generated configure is up-to-date

###

run_autogen_or_fail() {

  if test "x`which autoconf 2> /dev/null`" = x; then

    echo "Cannot locate autoconf, unable to correct situation."

    echo "Please install autoconf and run 'bash autogen.sh' to update the generated files."

    echo "Error: Cannot continue" 1>&2

    exit 1

  else

    echo "Running autogen.sh to correct the situation"

    bash $conf_script_dir/autogen.sh

  fi

}

check_autoconf_timestamps() {

  for file in $conf_script_dir/configure.ac $conf_script_dir/*.m4 ; do

    if test $file -nt $conf_script_dir/generated-configure.sh; then

      echo "Warning: The configure source files is newer than the generated files."

      run_autogen_or_fail

    fi

  done

  if test -e $conf_custom_script_dir/generated-configure.sh; then

    # If custom source configure is available, make sure it is up-to-date as well.

    for file in $conf_script_dir/configure.ac $conf_script_dir/*.m4 $conf_custom_script_dir/*.m4; do

      if test $file -nt $conf_custom_script_dir/generated-configure.sh; then

        echo "Warning: The configure source files is newer than the custom generated files."

        run_autogen_or_fail

      fi

    done

  fi

}

check_hg_updates() {

  if test "x`which hg 2> /dev/null`" != x; then

    conf_updated_autoconf_files=`cd $conf_script_dir && hg status -mard 2> /dev/null | grep autoconf`

    if test "x$conf_updated_autoconf_files" != x; then

      echo "Configure source code has been updated, checking time stamps"

      check_autoconf_timestamps

    fi

    if test -e $conf_custom_script_dir; then

      # If custom source configure is available, make sure it is up-to-date as well.

      conf_custom_updated_autoconf_files=`cd $conf_custom_script_dir && hg status -mard 2> /dev/null | grep autoconf`

      if test "x$conf_custom_updated_autoconf_files" != x; then

        echo "Configure custom source code has been updated, checking time stamps"

        check_autoconf_timestamps

      fi

    fi

  fi

}

# Check for local changes

check_hg_updates

if test -e $conf_custom_script_dir/generated-configure.sh; then

  # Test if open configure is newer than custom configure, if so, custom needs to

  # be regenerated. This test is required to ensure consistency with custom source.

  conf_open_configure_timestamp=`grep DATE_WHEN_GENERATED= $conf_script_dir/generated-configure.sh  | cut -d"=" -f 2`

  conf_custom_configure_timestamp=`grep DATE_WHEN_GENERATED= $conf_custom_script_dir/generated-configure.sh  | cut -d"=" -f 2`

  if test $conf_open_configure_timestamp -gt $conf_custom_configure_timestamp; then

    echo "Warning: The generated configure file contains changes not present in the custom generated file."

    run_autogen_or_fail

  fi

fi

# Autoconf calls the configure script recursively sometimes.

# Don't start logging twice in that case

if test "x$conf_debug_configure" = xtrue; then

  conf_debug_configure=recursive

fi

###

### Process command-line arguments

###

# Returns a shell-escaped version of the argument given.

function shell_quote() {

  if [[ -n "$1" ]]; then

    # Uses only shell-safe characters?  No quoting needed.

    # '=' is a zsh meta-character, but only in word-initial position.

    if [[ "$1" =~ ^[ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789.:,%/+=_-]+$ && ! "$1" =~ ^= ]]; then

      quoted="$1"

    else

      if [[ "$1" =~ [\'!] ]]; then

        # csh does history expansion within single quotes, but not

        # when backslash-escaped!

        local quoted_quote="'\\''" quoted_exclam="'\\!'"

        word="${1//\'/${quoted_quote}}"

        word="${1//\!/${quoted_exclam}}"

      fi

      quoted="'$1'"

    fi

    echo "$quoted"

  fi

}

conf_processed_arguments=()

conf_quoted_arguments=()

conf_openjdk_target=

for conf_option

do

  # Process (and remove) our own extensions that will not be passed to autoconf

  case $conf_option in

    --openjdk-target=*)

      conf_openjdk_target=`expr "X$conf_option" : '[^=]*=\(.*\)'`

      ;;

    --debug-configure)

      if test "x$conf_debug_configure" != xrecursive; then

        conf_debug_configure=true

        export conf_debug_configure

      fi

      ;;

    *)

      conf_processed_arguments=("${conf_processed_arguments[@]}" "$conf_option")

      ;;

  esac

  # Store all variables overridden on the command line

  case $conf_option in

    [^-]*=*)

      # Add name of variable to CONFIGURE_OVERRIDDEN_VARIABLES list inside !...!.

      conf_env_var=`expr "x$conf_option" : 'x\([^=]*\)='`

      CONFIGURE_OVERRIDDEN_VARIABLES="$CONFIGURE_OVERRIDDEN_VARIABLES!$conf_env_var!"

      ;;

  esac

  # Save the arguments, intelligently quoted for CONFIGURE_COMMAND_LINE.

  case $conf_option in

    *=*)

      conf_option_name=`expr "x$conf_option" : 'x\([^=]*\)='`

      conf_option_name=$(shell_quote "$conf_option_name")

      conf_option_value=`expr "x$conf_option" : 'x[^=]*=\(.*\)'`

      conf_option_value=$(shell_quote "$conf_option_value")

      conf_quoted_arguments=("${conf_quoted_arguments[@]}" "$conf_option_name=$conf_option_value")

      ;;

    *)

      conf_quoted_arguments=("${conf_quoted_arguments[@]}" "$(shell_quote "$conf_option")")

      ;;

  esac

  # Check for certain autoconf options that require extra action

  case $conf_option in

    -build | --build | --buil | --bui | --bu |-build=* | --build=* | --buil=* | --bui=* | --bu=*)

      conf_legacy_crosscompile="$conf_legacy_crosscompile $conf_option" ;;

    -target | --target | --targe | --targ | --tar | --ta | --t | -target=* | --target=* | --targe=* | --targ=* | --tar=* | --ta=* | --t=*)

      conf_legacy_crosscompile="$conf_legacy_crosscompile $conf_option" ;;

    -host | --host | --hos | --ho | -host=* | --host=* | --hos=* | --ho=*)

      conf_legacy_crosscompile="$conf_legacy_crosscompile $conf_option" ;;

    -help | --help | --hel | --he | -h)

      conf_print_help=true ;;

  esac

done

# Save the quoted command line

CONFIGURE_COMMAND_LINE="${conf_quoted_arguments[@]}"

if test "x$conf_legacy_crosscompile" != "x"; then

  if test "x$conf_openjdk_target" != "x"; then

    echo "Error: Specifying --openjdk-target together with autoconf"

    echo "legacy cross-compilation flags is not supported."

    echo "You specified: --openjdk-target=$conf_openjdk_target and $conf_legacy_crosscompile."

    echo "The recommended use is just --openjdk-target."

    exit 1

  else

    echo "Warning: You are using legacy autoconf cross-compilation flags."

    echo "It is recommended that you use --openjdk-target instead."

    echo ""

  fi

fi

if test "x$conf_openjdk_target" != "x"; then

  conf_build_platform=`sh $conf_script_dir/build-aux/config.guess`

  conf_processed_arguments=("--build=$conf_build_platform" "--host=$conf_openjdk_target" "--target=$conf_openjdk_target" "${conf_processed_arguments[@]}")

fi

# Make configure exit with error on invalid options as default.

# Can be overridden by --disable-option-checking, since we prepend our argument

# and later options override earlier.

conf_processed_arguments=("--enable-option-checking=fatal" "${conf_processed_arguments[@]}")

###

### Call the configure script

###

if test -e $conf_custom_script_dir/generated-configure.sh; then

  # Custom source configure available; run that instead

  echo "Running custom generated-configure.sh"

  conf_script_to_run=$conf_custom_script_dir/generated-configure.sh

else

  echo "Running generated-configure.sh"

  conf_script_to_run=$conf_script_dir/generated-configure.sh

fi

if test "x$conf_debug_configure" != x; then

  # Turn on shell debug output if requested (initial or recursive)

  set -x

fi

if test "x$conf_debug_configure" = xtrue; then

  # Turn on logging, but don't turn on twice when called recursive

  conf_debug_logfile=./debug-configure.log

  (exec 3>&1 ; (. $conf_script_to_run "${conf_processed_arguments[@]}" 2>&1 1>&3 ) | tee -a $conf_debug_logfile 1>&2 ; exec 3>&-) | tee -a $conf_debug_logfile

else

  ( . $conf_script_to_run "${conf_processed_arguments[@]}" )

fi

conf_result_code=$?

###

### Post-processing

###

if test $conf_result_code -eq 0; then

  if test "x$conf_print_help" = xtrue; then

    cat <<EOT

Additional (non-autoconf) OpenJDK Options:

  --openjdk-target=TARGET cross-compile with TARGET as target platform

                          (i.e. the one you will run the resulting binary on).

                          Equivalent to --host=TARGET --target=TARGET

                          --build=<current platform>

  --debug-configure       Run the configure script with additional debug

                          logging enabled.

EOT

    # Print list of toolchains. This must be done by the autoconf script.

    ( CONFIGURE_PRINT_TOOLCHAIN_LIST=true . $conf_script_to_run PRINTF=printf )

    cat <<EOT

Please be aware that, when cross-compiling, the OpenJDK configure script will

generally use 'target' where autoconf traditionally uses 'host'.

Also note that variables must be passed on the command line. Variables in the

environment will generally be ignored, unlike traditional autoconf scripts.

EOT

  fi

else

  echo configure exiting with result code $conf_result_code

fi

exit $conf_result_code