#!/bin/bash -e
#
# Copyright (c) 2018, 2025, 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.
#

# Create a bundle in OpenJDK build folder, containing what's needed to run
# the 'autoconf' program by the OpenJDK build. To override TARGET_PLATFORM
# just set the variable before running this script.

# This script fetches sources from network so make sure your proxy is setup appropriately.

# colored print to highlight some of the logs
function print_log()
{
  Color_Cyan='\033[1;36m'   # Cyan
  Color_Off='\033[0m'       # Reset color
  printf "${Color_Cyan}> $1${Color_Off}\n"
}


# Autoconf depends on m4, so download and build that first.
AUTOCONF_VERSION=2.69
M4_VERSION=1.4.18

PACKAGE_VERSION=1.0.1
case `uname -s` in
    Darwin)
        os=macosx
        ;;
    Linux)
        os=linux
        ;;
    CYGWIN*)
        os=cygwin
        ;;
esac
case `uname -m` in
    arm64|aarch64)
        arch=aarch64
        ;;
    amd64|x86_64|x64)
        arch=x64
        ;;
esac
TARGET_PLATFORM=${TARGET_PLATFORM:="${os}_${arch}"}

MODULE_NAME=autoconf-$TARGET_PLATFORM-$AUTOCONF_VERSION+$PACKAGE_VERSION
BUNDLE_NAME=$MODULE_NAME.tar.gz

SCRIPT_DIR="$(cd "$(dirname $0)" > /dev/null && pwd)"
BASEDIR="$(cd "$SCRIPT_DIR/../.."  > /dev/null && pwd)"
OUTPUT_ROOT="$BASEDIR/build/autoconf"

IMAGE_DIR=$OUTPUT_ROOT/$MODULE_NAME
mkdir -p $IMAGE_DIR/usr
cd $OUTPUT_ROOT

# Download and build m4

if test "x$TARGET_PLATFORM" = xcygwin_x64; then
  # On cygwin 64-bit, just copy the cygwin .exe file
  mkdir -p $IMAGE_DIR/usr/bin
  cp /usr/bin/m4 $IMAGE_DIR/usr/bin
elif test "x$TARGET_PLATFORM" = xcygwin_x86; then
  # On cygwin 32-bit, just copy the cygwin .exe file
  mkdir -p $IMAGE_DIR/usr/bin
  cp /usr/bin/m4 $IMAGE_DIR/usr/bin
elif test "x$TARGET_PLATFORM" = xlinux_x64; then
  M4_VERSION=1.4.13-5
  wget https://yum.oracle.com/repo/OracleLinux/OL6/latest/x86_64/getPackage/m4-$M4_VERSION.el6.x86_64.rpm
  cd $IMAGE_DIR
  rpm2cpio $OUTPUT_ROOT/m4-$M4_VERSION.el6.x86_64.rpm | cpio -d -i
elif test "x$TARGET_PLATFORM" = xlinux_x86; then
  M4_VERSION=1.4.13-5
  wget http://yum.oracle.com/repo/OracleLinux/OL6/latest/i386/getPackage/m4-$M4_VERSION.el6.i686.rpm
  cd $IMAGE_DIR
  rpm2cpio $OUTPUT_ROOT/m4-$M4_VERSION.el6.i686.rpm | cpio -d -i
else
  print_log "m4: download"
  wget https://ftp.gnu.org/gnu/m4/m4-$M4_VERSION.tar.gz
  tar -xzf m4-$M4_VERSION.tar.gz
  cd m4-$M4_VERSION
  print_log "m4: configure"
  ./configure --prefix=$IMAGE_DIR/usr CFLAGS="-w -Wno-everything"
  print_log "m4: make"
  make
  print_log "m4: make install"
  make install
  cd ..
fi

# Download and build autoconf

print_log "autoconf: download"
wget https://ftp.gnu.org/gnu/autoconf/autoconf-$AUTOCONF_VERSION.tar.gz
tar -xzf autoconf-$AUTOCONF_VERSION.tar.gz
cd autoconf-$AUTOCONF_VERSION
print_log "autoconf: configure"
./configure --prefix=$IMAGE_DIR/usr M4=$IMAGE_DIR/usr/bin/m4
print_log "autoconf: make"
make
print_log "autoconf: make install"
make install
cd ..

# The resulting scripts from installation folder use absolute paths to reference other files within installation folder
print_log "replace absolue paths from installation files with a relative ."
perl -pi -e "s!$IMAGE_DIR/!./!" $IMAGE_DIR/usr/bin/auto* $IMAGE_DIR/usr/share/autoconf/autom4te.cfg

print_log "creating $IMAGE_DIR/autoconf wrapper script"
cat > $IMAGE_DIR/autoconf << EOF
#!/bin/bash
# Get an absolute path to this script
this_script_dir=\`dirname \$0\`
this_script_dir=\`cd \$this_script_dir > /dev/null && pwd\`

export M4="\$this_script_dir/usr/bin/m4"
export AUTOM4TE="\$this_script_dir/usr/bin/autom4te"
export AUTOCONF="\$this_script_dir/usr/bin/autoconf"
export AUTOHEADER="\$this_script_dir/usr/bin/autoheader"
export AC_MACRODIR="\$this_script_dir/usr/share/autoconf"
export autom4te_perllibdir="\$this_script_dir/usr/share/autoconf"

PREPEND_INCLUDE="--prepend-include \$this_script_dir/usr/share/autoconf"

exec \$this_script_dir/usr/bin/autoconf \$PREPEND_INCLUDE "\$@"
EOF

chmod +x $IMAGE_DIR/autoconf

print_log "archiving $IMAGE_DIR directory as $OUTPUT_ROOT/$BUNDLE_NAME"
cd $IMAGE_DIR
tar -cvzf $OUTPUT_ROOT/$BUNDLE_NAME *