mingw-w64-build-3.6.0.sh

#!/bin/bash

script_ver='3.6.0'
################################################################################
# MingGW-w64 Build Script
################################################################################
# Copyright (C) 2011-2014  Kyle Schwarz
# 
# This program is free software: you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation, either version 3 of the License, or (at your option) any later
# version.
# 
# This program 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 for more
# details.
# 
# You should have received a copy of the GNU General Public License along with
# this program.  If not, see <http://www.gnu.org/licenses/>.
#
# The GNU General Public License can be found at the end of this file.
#
# Written by Kyle Schwarz, report any bugs to <kyle.r.schwarz@gmail.com>
#
# This script will build MinGW-w64 for Win32 and Win64.
# 
# This version will build the following packages into the toolchain:
#   mingw-w64
#   gmp
#   mpfr
#   mpc
#   isl
#   cloog
#   binutils
#   gcc
################################################################################

about () {
clear
read -p \
"################################################################################
#                                                                              #
#                        MingGW-w64 Build Script $script_ver                         #
#                                                                              #
#                                                                              #
#            This script will build MinGW-w64 for Win32 and Win64.             #
#                                                                              #
#      This version will build the following packages into the toolchain       #
#                                                                              #
#          mingw-w64                        gmp                                #
#                                                                              #
#          mpfr                             mpc                                #
#                                                                              #
#          isl                              cloog                              #
#                                                                              #
#          binutils                         gcc                                #
#                                                                              #
#                                                                              #
#                            Press Enter to continue                           #
#                                                                              #
#                     Copyright (C) 2011-1013 Kyle Schwarz                     #
#                This program comes with ABSOLUTELY NO WARRANTY                #
#                                                                              #
################################################################################"
}

# Variables
working_dir="$(pwd)"
detected_cpu_count="$(grep -c processor /proc/cpuinfo)"
uname_m="$(uname -m)"
target_i686='i686-w64-mingw32'
target_x86_64='x86_64-w64-mingw32'

## Versions
mingw_w64_release_ver='3.1.0'
gcc_release_ver='4.9.0'
gcc_old_release_ver='4.8.3'
mpfr_release_ver='3.1.2'
mpc_release_ver='1.0.2'
binutils_release_ver='2.24'
gmp_release_ver='6.0.0a'
isl_release_ver='0.11.1'
cloog_release_ver='0.18.0'
pthreads_w32_release_ver='2-9-1'

## Locations
mingw_w64_source_dir="$working_dir/source"
mingw_w64_build_dir="$working_dir/build"
pkgs_dir="$working_dir/pkgs"

## Prefixes
mingw_w64_i686_prefix="$working_dir/mingw-w64-i686"
mingw_w64_x86_64_prefix="$working_dir/mingw-w64-x86_64"

display_help () {
cat <<EOF
Compile MinGW-w64 as a cross-toolchain for Win32 or Win64

Run options other than compiling (./mingw-w64-build-$script_ver OPTION):
  wipe    removes all MinGW-w64 files in the directory (build build.log 
          mingw-w64-i686 mingw-w64-x86_64 pkgs source)

Available options are specified in parentheses.

Defaults for the options are specified in brackets.

General:
  -h, --help     display this help and exit
  -a, --about    display the "About" page
  -V, --version  display version information and exit

Compile Options:
  --build-type=TYPE           compile for TYPE (win32, win64, multi)
  --default-configure         compile with default options for all unset options
  --allow-overwrite           allow overwrite if no updates are found
  --rebuild-all               rebuild all packages
  --mingw-w64-ver=NUMBER      compile with MinGW-w64 VERSION ($mingw_w64_release_ver, svn)
                              [$mingw_w64_release_ver]
  --cpu-count=NUMBER          use NUMBER of cores/threads to compile with (1-$detected_cpu_count,
                              max) [max]
  --binutils-ver=VERSION      compile with binutils VERSION (snapshot, $binutils_release_ver,
                              cvs) [$binutils_release_ver]
  --gcc-ver=VERSION           compile with GCC VERSION ($gcc_release_ver, $gcc_old_release_ver, svn)
                              [$gcc_old_release_ver]
  --pthreads-w32-ver=VERSION  compile with Pthreads-w32 VERSION ($pthreads_w32_release_ver, cvs)
                              [cvs]
  --gcc-langs=LANG1,LANG2     compile GCC with support for LANG (ada, c, c++,
                              fortran, go, java, objc, obj-c++, all) [c,c++,lto]
  --enable-nls                enable "Native Language Support"
  --disable-shared            compile a static only toolchain
  --threads=LIB               compile with support for thread LIB (winpthreads,
                              pthreads-w32, disable) [pthreads-w32]
  --clean-build               remove the unneeded directories after a successful
                              compile, leaving only the built toolchain. The 
                              'build', 'source', and 'packages' directories will
                              be removed. 
  --enable-gendef             compile the MinGW-w64 tools gendef.
  --verbose                   show raw build output

Report bugs to <kyle.r.schwarz@gmail.com>.
EOF
}

print_error ()
{
  printf '\n\nError. See build.log for more details\n\n'
  exit 1
}

yes_no_sel () {
local usr_input
local question="$1"
shift
while [[ "$usr_input" != [YyNn] ]]; do
  printf '%s [y/n]: ' "$question"
  read usr_input
  if [[ "$usr_input" != [YyNn] ]]; then
    printf '\nYour selection was not vaild, please try again.\n\n'
  fi
done
case "$usr_input" in
  [Yy] ) return 0 ;;
  [Nn] ) return 1 ;;
esac
}

var_in_array() {
local var=$1
local array
shift
for array; do
  [[ $var = "$array" ]] && return
done
return 1
}

create_pkg_dirs () {
local pkg_name="$1"
mkdir -p "$pkg_name"
cd "$pkg_name" || exit 1
mkdir -p 'build' 'source'
cd 'source' || exit 1
}

use_cpu_count () {
if [[ "$cpu_count" -ge '2' ]]; then
  while [[ "$select_cpu_count" != [1-$cpu_count] ]]; do
    printf '\nA total of %d cores/threads were found. How many would you like to use to compile MinGW-w64? You can set this option with: "--cpu-count=NUMBER", see --help for more information. [1-%d]: ' "$detected_cpu_count" "$detected_cpu_count"
    read select_cpu_count
  done
  cpu_count="$select_cpu_count"
fi

if [[ "$cpu_count" -lt '1' ]]; then
  if yes_no_sel 'The number of cores/threads could not be found, would you like to manually enter the number of cores/threads your CPU has? (If "n" is selected, one core/thread will be used).'; then
    printf '\nPlease enter the number of cores/threads your CPU has. (Make sure the number you enter is correct, trying to use more cores/threads than your CPU has can cause your system to crash).: '
    read cpu_count
  else
    cpu_count='1'
  fi
fi
}

pkg_touch_success () {
local pkg_name="$1"
local pkg_ver="$2"
local pkg_state="$3"
local pkg_arch="$4"
shift 4
mkdir -p "$pkgs_dir/touch-files/$pkg_name"
touch "$pkgs_dir/touch-files/$pkg_name/$pkg_name-$pkg_ver-$pkg_arch.$pkg_state"
}

check_pkg_touch_success () {
local pkg_name="$1"
local pkg_ver="$2"
local pkg_state="$3"
local pkg_arch="$4"
shift 4

if [[ -f "$pkgs_dir/touch-files/$pkg_name/$pkg_name-$pkg_ver-$pkg_arch.$pkg_state" ]]; then
  return 0
fi
return 1
}

build_progress ()
{
if [[ "$verbose" != 'yes' ]]; then
  if [[ "$1" = 'Done' ]]; then
    printf '%s\n' "$1"
    return 0
  fi

  local step_function="$1"
  local step_name="$2"
  shift 2
 
  printf '[%d/%d]: %s %s... ' "$current_step" "$total_steps" "$step_name" "$step_function"
  ((current_step++))
fi
}

build_log ()
{  
  if [[ "$verbose" = 'yes' ]]; then
    tee -a "$working_dir/build.log"
  else
    cat >>"$working_dir/build.log"
  fi
}

choose_mingw_w64_ver () {
while [[ "$mingw_w64_ver_select" != [1-2] ]]; do
cat <<EOF

Which MinGW-w64 version would you like to build? You can set this option with: '--mingw-w64-ver=NUMBER', see --help for more information.
  1. MinGW-w64 $mingw_w64_release_ver 
  2. MinGW-w64 SVN (default)
EOF
printf 'Choose which MinGW-w64 version would would like to build. [1-2]: '
read mingw_w64_ver_select
case "$mingw_w64_ver_select" in
  1 ) mingw_w64_ver="$mingw_w64_release_ver" ;;
  2 ) mingw_w64_ver='svn' ;;
  * ) printf '\nYour selection was not valid, please try again.\n\n' ;;
esac
done
}

choose_binutils_ver () {
while [[ "$binutils_ver_select" != [1-3] ]]; do
cat <<EOF

Which Binutils version would you like to build? You can set this option with: '--binutils-ver=VERSION', see --help for more information.
  1. Binutils snapshot
  2. Binutils $binutils_release_ver (default)
  3. Binutils cvs
EOF
printf 'Choose which Binutils version would would like to build. [1-2]: '
read binutils_ver_select
case "$binutils_ver_select" in
  1 ) binutils_ver="snapshot" ;;
  2 ) binutils_ver="$binutils_release_ver" ;;
  3 ) binutils_ver='cvs' ;;
  * ) printf '\nYour selection was not valid, please try again.\n\n' ;;
esac
done
}

choose_gcc_ver () {
while [[ "$gcc_ver_select" != [1-4] ]]; do
cat <<EOF

Which GCC version would you like to build? You can set this option with: '--gcc-ver=VERSION', see --help for more information.
  1. GCC $gcc_release_ver
  2. GCC $gcc_old_release_ver (default)
  3. GCC $svn
EOF
printf 'Choose which GCC version would would like to build. [1-3]: '
read gcc_ver_select
case "$gcc_ver_select" in
  1 ) gcc_ver="$gcc_release_ver" ;;
  2 ) gcc_ver="$gcc_old_release_ver" ;;
  3 ) gcc_ver='svn' ;;
  * ) printf '\nYour selection was not valid, please try again.\n\n' ;;
esac
done
}

configure_gcc () {
if [[ "$enabled_langs" != *,* ]]; then
  printf -v enabled_langs '%s,' "${enabled_langs[@]}"
  enabled_langs="${enabled_langs%,}"
fi

case "$gcc_ver" in
  * ) "../source/gcc-$gcc_ver/configure" --build="$system_type" --target="$mingw_w64_target"  "${static_build[@]}" "${disable_nls[@]}" --disable-multilib --prefix="$mingw_w64_prefix" --with-sysroot="$mingw_w64_prefix" --with-mpc="$mpc_prefix" --with-mpfr="$mpfr_prefix" --with-gmp="$gmp_prefix"  --with-host-libstdcxx="-lstdc++ ${gcc_stdcxx_flags[*]}" --with-cloog="$cloog_prefix" --with-isl="$isl_prefix" --enable-languages="$enabled_langs" --enable-threads=win32 --enable-fully-dynamic-string --enable-lto  > >(build_log) 2>&1 || exit 1 ;;
esac
}

choose_static_build () {
if yes_no_sel "Would you like to build a fully static build? You can set this option with: '--disable-shared', see --help for more information. (Select \"n\" if you are not sure, \"n\" is the default)."; then
  static_build=('--disable-shared' '--enable-static')
else
  static_build=('--enable-shared' '--disable-static')
fi
}

choose_disable_nls () {
if yes_no_sel "Would you like to disable NLS support? Native Language Support (NLS), which lets GCC/Binutils output diagnostics in languages other than American English. You can set this option with: '--disable-nls', see --help for more information. (Select \"y\" if you are not sure, \"y\" is the default)."; then
  disable_nls=('--disable-nls')
else
  disable_nls=('--enable-nls')
fi
}

choose_lang_sel () {
if yes_no_sel "Would you like to manualy configure which languages GCC will support? You can set this option with: '--gcc-langs=LANG1,LANG2', see --help for more information. (if \"n\" is input only C and C++ will be enabled)."; then
  set_langs
else
  enabled_langs=('c' 'c++')
fi
}

set_langs () {
all_langs=('ada' 'c' 'c++' 'fortran' 'go' 'java' 'objc' 'obj-c++')
formated_langs=('Ada' 'C' 'C++' 'Fortran' 'Go' 'Java' 'Objective-C' 'Objective-C++')

cat <<'EOF'
Choose which languages you would like GCC to support.
  1. C and C++ (default)
  2. All detected
  3. Manually choose for each language.
EOF
printf 'Input your choice [1-3]: '
read sel_set_langs
case "$sel_set_langs" in
  1 ) enabled_langs=('c' 'c++')
      clear
      confirm_langs ;;
  2 ) enabled_langs=('all')
      clear
      confirm_langs ;;
  3 ) custom_langs ;;
  * ) printf '\nYour selection was not vaild, please try again.\n\n'
      set_langs
esac
}

custom_langs () {
unset enabled_langs
local num='0'
for lang in "${formated_langs[@]}"; do
  if yes_no_sel "Would you like to build GCC with $lang support?"; then
    enabled_langs=("${enabled_langs[@]}" "${all_langs[$num]}")
  fi
  ((num++))
done
confirm_langs
}

confirm_langs () {
if [[ "$enabled_langs" = 'all' ]]; then
  printf 'GCC will attempt to detect and build all of the following languages. It will silently disable the languages it can not find. (A "*" indicates that GCC will attempt to support the language).\n'
else
  printf 'The following languages will be supported in GCC. If one of the selected languages can not be found on your system when GCC is built it will fail and you will need to rerun this script after you have installed the failed language. (A "*" indicates that GCC will support the language).\n'
fi

local num='0'
for lang in "${all_langs[@]}"; do
  if var_in_array "$lang" "${enabled_langs[@]}" || [[ "${enabled_langs}" = 'all' ]]; then
    printf '  [*] %s\n' "${formated_langs[$num]}"
  else
    printf '  [ ] %s\n' "${formated_langs[$num]}"
  fi
  ((num++))
done

printf 'Are the languages selected correct? (if "n" is selected, you will be allowed to reconfigure you language selection). [y/n]: '
read user_input
case "$user_input" in
  [Nn] ) clear
         unset enabled_langs
         set_langs ;;
  [Yy] ) ;;
  *    ) printf '\nYour selection was not valid, please try again.\n\n'
         confirm_langs ;;
esac
}

configure_build_fn () {
if yes_no_sel 'Would you like to manually choose which package versions to build into MinGW-w64 yourself, and configure the build?'; then
  if [[ -z "$mingw_w64_ver" ]]; then
    choose_mingw_w64_ver
  fi
  if [[ -z "$binutils_ver" ]]; then
    choose_binutils_ver
  fi
  if [[ -z "$gcc_ver" ]]; then
    choose_gcc_ver
  fi
  if [[ -z "$static_build" ]]; then
    choose_static_build
  fi
  if [[ -z "$disable_nls" ]]; then
    choose_disable_nls
  fi
  if [[ -z "$enabled_langs" ]]; then
    choose_lang_sel
  fi
  default_configure
else
  default_configure
fi
}

default_configure () {
default_config='yes'
if [[ -z "$mingw_w64_ver" ]]; then
  mingw_w64_ver="$mingw_w64_release_ver"
fi
if [[ -z "$binutils_ver" ]]; then
  binutils_ver="$binutils_release_ver"
fi
if [[ -z "$gcc_ver" ]]; then
  gcc_ver="$gcc_old_release_ver"
fi
if [[ -z "$disable_nls" ]]; then
  disable_nls=('--disable-nls')
fi
if [[ -z "$enabled_langs" ]]; then
  enabled_langs=('c' 'c++')
fi
if [[ -z "$thread_lib" ]]; then
  thread_lib='pthreads-w32'
fi
if [[ -z "$cpu_count" ]]; then
  cpu_count="$detected_cpu_count"
fi
}

download_extract () {
local download_urls=("$1" "$2")
shift 2 


for download_url in "${download_urls[@]}"; do
archive="${download_url##*/}"
package_name="${archive%.tar*}"
if [[ -d "$package_name" ]]; then
  return 0
fi

case "$archive" in
  *.tar.gz ) archive_type='gzip' ;;
  *.tar.bz2 ) archive_type='bzip2' ;;
  *.tar.xz ) archive_type='xz' ;;
esac
if [[ ! -f "$archive" ]]; then
  build_progress "$archive" 'Downloading'
  wget -nv -t 5 "$download_url" > >(build_log) 2>&1
  build_progress 'Done'
fi

if [[ ! -d "$package_name" ]]; then
  build_progress "$archive" 'Extracting'
  if "$archive_type" -d <"$archive" | pax -r ; then
    build_progress 'Done'
    return 0
  else
    rm -rf "$archive" "$package_name"
    build_progress "$archive" 'Downloading'
    wget -nv "$download_url" > >(build_log) 2>&1
    build_progress 'Done'
    build_progress "$archive" 'Extracting'
    "$archive_type" -d <"$archive" | pax -r
    build_progress 'Done'
  fi
fi
done

if [[ ! -d "$package_name" ]]; then
  exit 1
fi
}

clean_build () {
cd '..'
rm -fr 'build' || exit 1
mkdir -p 'build'
cd 'build' || exit 1
}

build_winpthreads () {
cd "$mingw_w64_build_dir" || exit 1
rm -fr 'winpthreads '
mkdir -p 'winpthreads'
cd 'winpthreads' || exit 1
local mingw_w64_target="$1"
local mingw_w64_prefix="$2"
shift 3
build_progress 'winpthreads' 'Configuring'
"../../source/mingw-w64-$mingw_w64_ver/mingw-w64-libraries/winpthreads/configure" --build="$system_type" --host="$mingw_w64_target" "${static_build[@]}" --prefix="$mingw_w64_prefix" > >(build_log) 2>&1 || exit 1
build_progress 'Done'

build_progress 'winpthreads' 'Building'
make > >(build_log) 2>&1 || exit 1
build_progress 'Done'

build_progress 'winpthreads' 'Installing'
make install > >(build_log) 2>&1 || exit 1
build_progress 'Done'
}

build_binutils () {
cd "$pkgs_dir" || exit 1
create_pkg_dirs 'binutils' || exit 1
if [[ "$binutils_ver" != 'cvs' ]]; then
  if [[ "$binutils_ver" = "snapshot" ]]; then
    download_extract "ftp://sourceware.org/pub/binutils/snapshots/binutils.tar.bz2"
    binutils_ver="$(find . -name binutils -type d)"; binutils_ver="${binutils_ver##*-}"; binutils_ver="${binutils_ver%%/*}"
  else
    download_extract "http://ftp.gnu.org/gnu/binutils/binutils-$binutils_ver.tar.bz2" "ftp://ftp.gnu.org/gnu/binutils/binutils-$binutils_ver.tar.bz2"
  fi
else
  if [[ -d 'binutils-cvs' ]]; then
    cd 'binutils-cvs' || exit 1
    read -r oldmd5 _ < <(md5sum './CVS/Entries')
    build_progress 'binutils-cvs' 'Updating'
    cvs update || exit 1
    build_progress 'Done'
    read -r newmd5 _ < <(md5sum './CVS/Entries')
    if [[ "$oldmd5" != "$newmd5" ]]; then
      rm -rf "$pkgs_dir/touch-files/binutils/binutils-cvs-$uname_m."*
    fi
    cd '..'
  else
    build_progress 'binutils-cvs' 'Downloading'
    cvs -d :pserver:anoncvs@sourceware.org:/cvs/src checkout binutils > >(build_log) 2>&1 || exit 1
    build_progress 'Done'    
    mv 'src' 'binutils-cvs'
  fi
fi

cd '../build' || exit 1

mkdir -p "$mingw_w64_target"
cd "$mingw_w64_target" || exit 1

if ! check_pkg_touch_success 'binutils' "$binutils_ver" 'configure' "$mingw_w64_target"; then
  cd '..'
  rm -rf "$mingw_w64_target" || exit 1
  mkdir "$mingw_w64_target"
  cd "$mingw_w64_target" || exit 1
  build_progress 'binutils' 'Configuring'
  CC=gcc "../../source/binutils-$binutils_ver/configure" --build="$system_type" --target="$mingw_w64_target" "${static_build[@]}" "${disable_nls[@]}" --disable-multilib --with-sysroot="$mingw_w64_prefix" --prefix="$mingw_w64_prefix" > >(build_log) 2>&1 || exit 1
  build_progress 'Done'
fi
pkg_touch_success 'binutils' "$binutils_ver" 'configure' "$mingw_w64_target"
if ! check_pkg_touch_success 'binutils' "$binutils_ver" 'compile' "$mingw_w64_target"; then
  build_progress 'binutils' 'Building'  
  make -j "$cpu_count" > >(build_log) 2>&1 || exit 1
  build_progress 'Done'
fi
pkg_touch_success 'binutils' "$binutils_ver" 'compile' "$mingw_w64_target"
build_progress 'binutils' 'Installing'  
make install > >(build_log) 2>&1 || exit 1
build_progress 'Done'
}

std_compile ()
{
  local pkg="$1"
  local ver="$2"
  local url="$3"
  shift 3

  if check_pkg_touch_success "$pkg" "$ver" 'install' "$uname_m"; then
    return
  fi

  cd "$pkgs_dir" || exit 1
  create_pkg_dirs "$pkg" || exit 1

  download_extract "$url"

  if ! check_pkg_touch_success "$pkg" "$ver" 'configure' "$uname_m"; then
    clean_build
    build_progress "$pkg" 'Configuring'
    $@ > >(build_log) 2>&1 || print_error
    build_progress 'Done'
  fi
  pkg_touch_success "$pkg" "$ver" 'configure' "$uname_m"

  if ! check_pkg_touch_success "$pkg" "$ver" 'compile' "$uname_m"; then
    build_progress "$pkg" 'Building'
    make -j "$cpu_count" > >(build_log) 2>&1 || print_error
    build_progress 'Done'
  fi
  pkg_touch_success "$pkg" "$ver" 'compile' "$uname_m"

  if ! check_pkg_touch_success "$pkg" "$ver" 'install' "$uname_m"; then
    build_progress "$pkg" 'Installing'
    make install > >(build_log) 2>&1 || print_error
    build_progress 'Done'
  fi
  pkg_touch_success "$pkg" "$ver" 'install' "$uname_m"
}

build_mingw_w64 () {
local mingw_w64_target="$1"
local mingw_w64_prefix="$2"
shift 2
if [[ "$rebuild" = 'yes' ]]; then
  rm -rf "$pkgs_dir/touch-files"
fi
cd "$working_dir" || exit 1
rm -fr "$mingw_w64_prefix"
cd 'pkgs' || exit 1
mkdir -p 'touch-files'

build_binutils

export PATH="$mingw_w64_prefix/bin:$PATH"
cd "$mingw_w64_build_dir" || exit 1
clean_build
mkdir -p 'headers' 'crt'
cd 'headers' || exit 1

build_progress 'mingw-w64 headers' 'Configuring'
"$mingw_w64_source_dir/mingw-w64-$mingw_w64_ver/mingw-w64-headers/configure" --enable-sdk=all --build="$system_type" --host="$mingw_w64_target" --prefix="$mingw_w64_prefix" > >(build_log) 2>&1 || exit 1
build_progress 'Done'

build_progress 'mingw-w64 headers' 'Installing'
make install > >(build_log) 2>&1 || exit 1
build_progress 'Done'

cd "$mingw_w64_prefix" || exit 1
ln -s "./$mingw_w64_target" './mingw'
if [[ ! -d "./$mingw_w64_target/include" ]]; then
  cd "./$mingw_w64_target" || exit 1
  ln -s '../include' './include'
  cd "$mingw_w64_prefix" || exit 1
fi

case "$gcc_ver" in
  $gcc_release_ver ) cloog_ver='0.18.1'; isl_ver='0.12.2' ;;
  $gcc_old_release_ver ) cloog_ver='0.18.0';  isl_ver='0.11.1' ;;
esac

mpfr_prefix="$pkgs_dir/mpfr/mpfr-$mpfr_release_ver-$uname_m"
mpc_prefix="$pkgs_dir/mpc/mpc-$mpc_release_ver-$uname_m"
cloog_prefix="$pkgs_dir/cloog/cloog-$cloog_ver-$uname_m"
isl_prefix="$pkgs_dir/isl/isl-$isl_ver-$uname_m"
gmp_prefix="$pkgs_dir/gmp/gmp-$gmp_release_ver-$uname_m"

if [[ -n $CC ]]; then
  old_cc="$CC"
  export CC=gcc
fi

# Build gmp
std_compile 'gmp' "$gmp_release_ver" "http://ftp.gnu.org/gnu/gmp/gmp-$gmp_release_ver.tar.xz" "../source/gmp-6.0.0/configure" --build="$system_type" --prefix="$gmp_prefix" --enable-fat --disable-shared --enable-static --enable-cxx CPPFLAGS='-fexceptions'

#build mpfr
std_compile 'mpfr' "$mpfr_release_ver" "http://ftp.gnu.org/gnu/mpfr/mpfr-$mpfr_release_ver.tar.xz" "../source/mpfr-$mpfr_release_ver/configure" --build="$system_type" --prefix="$mpfr_prefix" --disable-shared --enable-static --with-gmp="$gmp_prefix"

#build mpc
std_compile 'mpc' "$mpc_release_ver" "http://ftp.gnu.org/gnu/mpc/mpc-$mpc_release_ver.tar.gz" "../source/mpc-$mpc_release_ver/configure" --build="$system_type" --prefix="$mpc_prefix" --with-gmp="$gmp_prefix" --with-mpfr="$mpfr_prefix" --disable-shared --enable-static

#build isl
std_compile 'isl' "$isl_ver" "ftp://gcc.gnu.org/pub/gcc/infrastructure/isl-$isl_ver.tar.bz2" "../source/isl-$isl_ver/configure" --prefix="$isl_prefix" --build="$system_type" --enable-static --disable-shared --with-gmp-prefix="$gmp_prefix" --with-piplib=no --with-clang=no

#build cloog
std_compile 'cloog' "$cloog_ver" "ftp://gcc.gnu.org/pub/gcc/infrastructure/cloog-$cloog_ver.tar.gz" "../source/cloog-$cloog_ver/configure" --prefix="$cloog_prefix" --build="$system_type" --enable-static --disable-shared --with-bits=gmp --with-isl=bundled --with-gmp-prefix="$gmp_prefix"

export CC="$old_cc"

# Build GCC (GCC only)
cd "$pkgs_dir" || exit 1
create_pkg_dirs 'gcc'
cd "$pkgs_dir/gcc/source" || exit 1
if [[ "$gcc_ver" != 'svn' ]]; then
  download_extract "http://ftp.gnu.org/gnu/gcc/gcc-$gcc_ver/gcc-$gcc_ver.tar.bz2" "ftp://ftp.gnu.org/gnu/gcc/gcc-$gcc_ver/gcc-$gcc_ver.tar.bz2"
else
  if [[ -d 'gcc-svn' ]]; then
    cd 'gcc-svn' || exit 1
    build_progress 'gcc-svn' 'Updating'
    svn update > >(build_log) 2>&1 || exit 1
    build_progress 'Done'
    cd '..'
  else
    build_progress 'gcc-svn' 'Downloading'
    svn checkout svn://gcc.gnu.org/svn/gcc/trunk gcc-svn > >(build_log) 2>&1 || exit 1
    build_progress 'Done'
  fi
fi

clean_build
build_progress 'gcc' 'Configuring'
configure_gcc "$gcc_ver" || exit 1
build_progress 'Done'

build_progress 'all-gcc' 'Building'
make -j "$cpu_count" all-gcc > >(build_log) 2>&1 || exit 1
build_progress 'Done'

build_progress 'gcc' 'Installing'
make install-gcc > >(build_log) 2>&1 || exit 1
build_progress 'Done'

# Build mingw-w64 CRT 
cd "$mingw_w64_build_dir/crt" || exit 1

build_progress 'mingw-w64 crt' 'Configuring'
"$mingw_w64_source_dir/mingw-w64-$mingw_w64_ver/mingw-w64-crt/configure" --build="$system_type" --host="$mingw_w64_target" --prefix="$mingw_w64_prefix" --with-sysroot="$mingw_w64_prefix" > >(build_log) 2>&1 || exit 1
build_progress 'Done'

build_progress 'mingw-w64 crt' 'Building'
make -j "$cpu_count" > >(build_log) 2>&1 || exit 1
build_progress 'Done'

build_progress 'mingw-w64 crt' 'Installing'
make install > >(build_log) 2>&1 || exit 1
build_progress 'Done'

cd "$mingw_w64_prefix" || exit 1
mv "./$mingw_w64_target/lib/"* './lib/'
rm -fr "./$mingw_w64_target/lib"
cd "./$mingw_w64_target"
ln -s '../lib' './lib'

# Build GCC
cd "$pkgs_dir/gcc/build" || exit 1
build_progress 'gcc target-libgcc' 'Building'
make -j "$cpu_count" all-target-libgcc > >(build_log) 2>&1 || exit 1
build_progress 'Done'

build_progress 'gcc target-libgcc' 'Installing'
make -j "$cpu_count" install-target-libgcc > >(build_log) 2>&1 || exit 1
build_progress 'Done'

build_progress 'gcc' 'Building'
make -j "$cpu_count" > >(build_log) 2>&1 || exit 1
build_progress 'Done'

build_progress 'gcc' 'Installing'
make install-strip > >(build_log) 2>&1 || exit 1
build_progress 'Done'

if [[ "$thread_lib" != 'disable' ]]; then
  build_thread_lib "$mingw_w64_target" "$mingw_w64_prefix" || exit 1
fi

if [[ "$enable_gendef" = 'yes' ]]; then
  cd "$mingw_w64_build_dir" || exit 1
  rm -fr 'gendef'
  mkdir 'gendef'
  cd 'gendef' || exit 1
  build_progress 'gendef' 'Configuring'
  "$mingw_w64_source_dir/mingw-w64-$mingw_w64_ver/mingw-w64-tools/gendef/configure" --build="$system_type" --prefix="$mingw_w64_prefix" > >(build_log) 2>&1 || exit 1
  build_progress 'Done'

  build_progress 'gendef' 'Building'
  make > >(build_log) 2>&1 || exit 1
  build_progress 'Done'

  build_progress 'gendef' 'Installing'
  make install > >(build_log) 2>&1 || exit 1
  build_progress 'Done'
fi

return 0
}

clean_build_fn () {
if [[ "$clean_build" = 'yes' ]]; then
  cd "$working_dir" && rm -fr 'build' 'pkgs' 'source'
  return
fi
if [[ "$default_config" = 'yes' ]]; then
  return
fi
unset user_input
printf '\n'
while [[ "$user_input" != [YyNn] ]]; do
  printf 'Would you like to clean the build, leaving only the built toolchain? You can set this option with: "--clean-build", see --help for more information. The "build", "pkgs", and "source" directories along with all files within them will be removed if "y" is selected. [y/n]: '
  read user_input
  if [[ "$user_input" = [Yy] ]]; then
    cd "$working_dir" && rm -fr 'build' 'pkgs' 'source' 'build.log'
  fi
  if [[ "$user_input" != [YyNn] ]]; then
    printf '\n\nYour selection was not vaild, please try again.\n\n'
  fi
done
}

download_source () {
case "$1" in
  'multi' ) if [[ -d "$mingw_w64_i686_prefix" && -d "$mingw_w64_x86_64_prefix" ]]; then  prefix_present='yes'; fi ;;
  'win32' ) if [[ -d "$mingw_w64_i686_prefix" ]]; then  prefix_present='yes'; fi ;;
  'win64' ) if [[ -d "$mingw_w64_x86_64_prefix" ]]; then  prefix_present='yes'; fi ;;
esac
shift

mkdir -p 'pkgs' 'source' 'build'
cd 'pkgs' || exit 1
rm -fr 'config.guess'
build_progress 'config.guess' 'Downloading'
wget -nv -O config.guess 'http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD' > >(build_log) 2>&1 || { ping -c 1 git.savannah.gnu.org >/dev/null 2>&1 || printf '\nsavannah.gnu.org seems to be offline right now and is needed to download the file "config.guess", please try again later.\n\n'; rm -f 'config.guess' && exit 1; }
build_progress 'Done'
system_type="$(sh config.guess)"

cd "$mingw_w64_source_dir" || exit 1
if [[ "$mingw_w64_ver" = 'svn' ]]; then
  if [[ -d 'mingw-w64-svn' ]]; then
    cd 'mingw-w64-svn' || exit 1
    svn_ver_before=$(sed -n 4p '.svn/entries')
    svn update || exit 1
    svn_ver_after=$(sed -n 4p '.svn/entries')
    if [[ "$allow_overwrite" != 'yes' && "$svn_ver_before" = "$svn_ver_after" &&  "$prefix_present" = 'yes' ]]; then
      if ! yes_no_sel "MinGW-w64 is already the latest version, continue with the build anyway? You can set this option with: '--allow-overwrite', see '--help' for more information."; then
        exit 0
      fi
    fi
  else

    svn checkout  svn://svn.code.sf.net/p/mingw-w64/code/trunk mingw-w64-svn || exit 1
  fi
else
  if [[ -d "mingw-w64-$mingw_w64_release_ver" && "$allow_overwrite" != 'yes' &&  "$prefix_present" = 'yes' ]]; then
    if ! yes_no_sel "MinGW-w64 is already the latest version, continue with the build anyway? You can set this option with: '--allow-overwrite', see '--help' for more information."; then
      exit 0
    fi
  fi

  if [[ ! -d "mingw-w64-$mingw_w64_release_ver" || ! -f "mingw-w64-$mingw_w64_release_ver.tar.bz2" ]]; then
    rm -f "mingw-w64-$mingw_w64_release_ver.tar.bz2" "mingw-w64-$mingw_w64_release_ver"
    build_progress "mingw-w64-$mingw_w64_release_ver.tar.bz2" 'Downloading'
    wget -nv -O "mingw-w64-$mingw_w64_release_ver.tar.bz2" http://downloads.sourceforge.net/project/mingw-w64/mingw-w64/mingw-w64-release/mingw-w64-v${mingw_w64_release_ver}.tar.bz2 > >(build_log) 2>&1 || exit 1
    build_progress 'Done'
    build_progress "mingw-w64-$mingw_w64_release_ver.tar.bz2" 'Extracting'
    bzip2 -d <"mingw-w64-$mingw_w64_release_ver.tar.bz2" | pax -r
    build_progress 'Done'
    mv "mingw-w64-v$mingw_w64_release_ver" "mingw-w64-$mingw_w64_release_ver"
  fi
fi
}

check_missing_packages () {
local check_packages=('bison' 'm4' 'flex' 'git' 'svn' 'gcc' 'yasm' 'cvs' 'g++' 'make' 'xz' 'bzip2' 'pax' 'gunzip')
for package in "${check_packages[@]}"; do
  command -v "$package" >/dev/null || missing_packages=("$package" "${missing_packages[@]}")
done

if [[ -n "${missing_packages[@]}" ]]; then
  printf '\nCould not find the following packages: %s\n' "${missing_packages[*]}"
  printf 'Install the missing packages before running this script.\n\n'
 exit 1
fi
}

build_pthreads_w32 () {
if [[ -z "$pthreads_w32_ver" ]]; then
  pthreads_w32_ver='cvs'
fi

local target prefix
target="$1"
prefix="$2"

shift 2
cd "$pkgs_dir" || exit 1
create_pkg_dirs 'pthread-w32' || exit 1

if [[ "$pthreads_w32_ver" = "$pthreads_w32_release_ver" ]]; then
  download_extract "ftp://sourceware.org/pub/pthreads-win32/pthreads-w32-$pthreads_w32_release_ver-release.tar.gz"
  if [[ ! -d "pthreads-w32-$pthreads_w32_release_ver" ]]; then
    mv "pthreads-w32-$pthreads_w32_release_ver-release" "pthreads-w32-$pthreads_w32_release_ver" || exit 1
  fi
else
  unset oldmd5 newmd5
  if [[ -d 'pthreads-w32-cvs' ]]; then
    cd 'pthreads-w32-cvs' || exit 1
    build_progress 'pthreads-w32 cvs' 'Updating'
    cvs update > >(build_log) 2>&1 || exit 1
    build_progress 'Done'
    cd '..'
  else
    build_progress 'pthreads-w32 cvs' 'Downloading'
    cvs -d :pserver:anonymous@sourceware.org:/cvs/pthreads-win32 checkout pthreads > >(build_log) 2>&1 || exit 1
    build_progress 'Done'
    mv 'pthreads' 'pthreads-w32-cvs'
  fi
fi

cd "pthreads-w32-$pthreads_w32_ver" || exit 1
make realclean > >(build_log) 2>&1 || exit 1
if [[ "${static_build[@]}" != *"disable-shared"* ]]; then
  build_progress 'pthreads-w32 shared' 'Building'
  make CROSS="$target-" realclean GC ARCH="$pthread_arch" > >(build_log) 2>&1 || exit 1
  build_progress 'Done'

  cp 'pthreadGC2.dll' "$prefix/lib/" || exit 1
  cd "$prefix/lib" || exit 1
  ln -s "./pthreadGC2.dll" "./libpthread.dll"
  cd "$pkgs_dir/pthread-w32/source/pthreads-w32-$pthreads_w32_ver" || exit 1
fi
build_progress 'pthreads-w32 static' 'Building'
make CROSS="$target-" realclean GC-static ARCH="$pthread_arch" > >(build_log) 2>&1 || exit 1
build_progress 'Done'

cp 'libpthreadGC2.a' "$prefix/lib/" || exit 1
cp 'pthread.h' 'sched.h' 'semaphore.h' "$prefix/include/" || exit 1
cd "$prefix/lib" || exit 1
ln -s "./libpthreadGC2.a" "./libpthread.a"
cd '../include' || exit 1

for file in 'pthread.h' 'sched.h' 'semaphore.h'; do
  if ! ed -s "$prefix/include/$file" <<< $',s/ __declspec (dllexport)//g\n,s/ __declspec (dllimport)//g\nw\nq' > >(build_log) 2>&1; then
    mv "$file" "$file".orig
    sed 's/ __declspec (dllexport)//g;s/ __declspec (dllimport)//g' "$file".orig > "$file"
    rm -f "$file".orig
  fi
done
}

build_thread_lib () {
local target prefix
target="$1"
prefix="$2"
shift 2
case "$thread_lib" in
  'winpthreads' ) build_winpthreads "$target" "$prefix" ;;
  'pthreads-w32' ) build_pthreads_w32 "$target" "$prefix" ;;
  * ) build_pthreads_w32 "$target" "$prefix" ;;
esac
}

completed_build () {
local arch="$1"
case "$arch" in
  'win32' ) mingw_w64_path_prefix="$mingw_w64_i686_prefix" ;;
  'win64' ) mingw_w64_path_prefix="$mingw_w64_x86_64_prefix" ;;
esac
printf 'The MinGW-w64 bin directory needs to be added to the PATH variable so the system can find it, for %s this can be done with: export PATH="%s/bin:$PATH"\n' "${arch^}" "$mingw_w64_path_prefix"
}

no_errors='MinGW-w64 has been built without errors.'

calculate_steps ()
{
case "$arch" in
  'multi' ) total_steps='68';;
  'win32' ) total_steps='50';;
  'win64' ) total_steps='50';;
esac

if [[ "$arch" = 'multi' ]]; then
  if [[ "${static_build[@]}" = *"disable-shared"* ]]; then
    total_steps=$((total_steps-2))
  fi

  if [[ "$enable_gendef" = 'yes' ]]; then
    total_steps=$((total_steps+6))
  fi
else
  if [[ "${static_build[@]}" = *"disable-shared"* ]]; then
    total_steps=$((total_steps-1))
  fi

  if [[ "$enable_gendef" = 'yes' ]]; then
    total_steps=$((total_steps+3))
  fi
fi
}

build_mingw_w64_toolchain () {
current_step='1'
local arch="$1"
calculate_steps "$arch"
check_missing_packages || exit 1
if [[ -z "$build_type" || -z "$mingw_w64_ver" || -z "$binutils_ver" || -z "$gcc_ver" || -z "$enabled_langs" ]]; then
  configure_build_fn || exit 1
fi
if [[ -z "$cpu_count" ]]; then
  use_cpu_count
fi
download_source "$arch" || exit 1
case "$arch" in
  'multi' ) build_mingw_w64 "$target_i686" "$mingw_w64_i686_prefix" && build_mingw_w64 "$target_x86_64" "$mingw_w64_x86_64_prefix" || exit 1 ;;
  'win32' ) build_mingw_w64 "$target_i686" "$mingw_w64_i686_prefix" || exit 1 ;;
  'win64' ) build_mingw_w64 "$target_x86_64" "$mingw_w64_x86_64_prefix" || exit 1 ;;
esac
clean_build_fn
printf '\n\n%s\n' "$no_errors"
if [[ "$arch" = "multi" ]]; then
  completed_build 'win32'
  completed_build 'win64'
else
  completed_build "$1"
fi
}

test_opt () {
test_valid_opt 'build_type' 'win32' 'win64' 'multi'
test_valid_opt 'mingw_w64_ver' "$mingw_w64_release_ver" 'svn'
test_valid_opt 'thread_lib' 'winpthreads' 'pthreads-w32' 'disable'
test_valid_opt 'pthreads_w32_ver' "$pthreads_w32_release_ver" 'cvs'
if [[ -n "$pthreads_w32_ver" ]]; then
 thread_lib='pthreads-w32'
fi
if [[ -n "$cpu_count_opt" ]]; then
  check_cpu_count_optarg
fi
test_valid_opt 'binutils_ver' "$binutils_release_ver" "snapshot" 'cvs'
if ! command -v makeinfo >/dev/null; then
  printf 'makeinfo is needed to compile binutils and will need be be installed. On Debian/Ubuntu it is part of the "texinfo" software package.\n'
  exit 1
fi
test_valid_opt 'gcc_ver' "$gcc_release_ver" "$gcc_old_release_ver" 'svn'
}

check_cpu_count_optarg () {
if [[ "$cpu_count_opt" = "max" ]]; then
  cpu_count="$(grep -c processor /proc/cpuinfo)"
  return 0
fi

if [[ "$cpu_count_opt" -gt "$(grep -c processor /proc/cpuinfo)" ]]; then
  if ! yes_no_sel "The input number of cores/threads was higher than the number detected ($(grep -c processor /proc/cpuinfo) were detected). Trying to use more cores/threads than your CPU has can cause your system to crash. Are you sure you want to continue?"; then
    exit 1
  fi
fi
cpu_count="$cpu_count_opt"
}

wipe () {
if yes_no_sel "Are you sure you want to remove all MinGW-w64 files? Files/directories: 'build' 'build.log' 'mingw-w64-i686' 'mingw-w64-x86_64' 'pkgs' 'source' will be removed."; then
  rm -fr 'build' 'build.log' 'mingw-w64-i686' 'mingw-w64-x86_64' 'pkgs' 'source'
fi

exit 0
}

test_valid_opt () {
if [[ -z "${!1}" ]]; then
  return
fi
local opt
local valid_arg
opt="$1"
shift

for args do
  if [[ "$args" = "${!opt}" ]]; then
    valid_arg='yes'
  fi
done

if [[ "$valid_arg" != 'yes' ]]; then
  clear
  printf 'Error, "%s" is not a valid option for --%s. The valid options are: %s\n' "${!opt}" "${opt//_/-}" "${*}"
  exit 1
fi
}

main_menu () {
if [[ "$build_type" != '' ]]; then
  build_mingw_w64_toolchain "$build_type" 2>&1 | tee "$working_dir/build.log"
  exit 0
fi
clear
while [[ "$build_choice" != [1-3] ]]; do
if [[ -n "${unknown_opts[@]}" ]]; then
  printf 'Unknown option(s)'
  for unknown_opt in "${unknown_opts[@]}"; do
    printf ' "%s"' "$unknown_opt"
  done
  printf ', ignored.\n\n'
fi
cat <<EOF
What version of MinGW-w64 would you like to build or update?
  1. Both Win32 and Win64
  2. Win32 (32-bit only)
  3. Win64 (64-bit only)
  4. About
  5. Exit

For a list of all available options, exit and run: 'bash ./mingw-w64-build-$script_ver --help'

EOF
printf 'Input your choice [1-5]: '
read build_choice
case "$build_choice" in
  1 ) build_mingw_w64_toolchain 'multi';;
  2 ) build_mingw_w64_toolchain 'win32';;
  3 ) build_mingw_w64_toolchain 'win64';;
  4 ) about; clear ;;
  5 ) exit 0 ;;
  * ) printf '\nYour choice was not valid, please try again.\n\n' ;;
esac
done
}

while true; do
  case $1 in
    -h | --help ) display_help; exit 0 ;;
    -a | --about ) about; exit 0 ;;
    -V | --version ) printf '%s\n' "$script_ver"; exit 0 ;;
    --build-type=* ) build_type="${1#*=}"; shift ;;
    --default-configure ) default_configure; shift ;;
    --rebuild-all ) rebuild='yes'; shift ;;
    --allow-overwrite ) allow_overwrite='yes'; shift ;;
    --mingw-w64-ver=* ) mingw_w64_ver="${1#*=}"; shift ;;
    --cpu-count=* ) cpu_count_opt="${1#*=}"; shift ;;
    --binutils-ver=* ) binutils_ver="${1#*=}"; shift ;;
    --gcc-ver=* ) gcc_ver="${1#*=}"; shift ;;
    --pthreads-w32-ver=* ) pthreads_w32_ver="${1#*=}" ; shift ;;
    --gcc-langs=* ) enabled_langs="${1#*=}"; shift ;;
    --enable-nls ) disable_nls=('--enable-nls'); shift ;;
    --disable-shared ) static_build=('--disable-shared' '--enable-static'); shift ;;
    --threads=* ) thread_lib="${1#*=}"; shift ;;
    --clean-build ) clean_build='yes'; shift ;;
    --enable-gendef ) enable_gendef='yes';  shift ;;
    --verbose ) verbose='yes'; shift ;;
    wipe ) wipe; shift ;;
    -- ) shift; break ;;
    -* ) printf 'Error, unknown option: "%s".\n' "$1"; exit 1 ;;
    * ) break ;;
  esac
done

test_opt

main_menu

exit 0

#                     GNU GENERAL PUBLIC LICENSE
#                        Version 3, 29 June 2007
# 
#  Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
#  Everyone is permitted to copy and distribute verbatim copies
#  of this license document, but changing it is not allowed.
# 
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# 
#   The GNU General Public License is a free, copyleft license for
# software and other kinds of works.
# 
#   The licenses for most software and other practical works are designed
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# the GNU General Public License is intended to guarantee your freedom to
# share and change all versions of a program--to make sure it remains free
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# GNU General Public License for most of our software; it applies also to
# any other work released this way by its authors.  You can apply it to
# your programs, too.
# 
#   When we speak of free software, we are referring to freedom, not
# price.  Our General Public Licenses are designed to make sure that you
# have the freedom to distribute copies of free software (and charge for
# them if you wish), that you receive source code or can get it if you
# want it, that you can change the software or use pieces of it in new
# free programs, and that you know you can do these things.
# 
#   To protect your rights, we need to prevent others from denying you
# these rights or asking you to surrender the rights.  Therefore, you have
# certain responsibilities if you distribute copies of the software, or if
# you modify it: responsibilities to respect the freedom of others.
# 
#   For example, if you distribute copies of such a program, whether
# gratis or for a fee, you must pass on to the recipients the same
# freedoms that you received.  You must make sure that they, too, receive
# or can get the source code.  And you must show them these terms so they
# know their rights.
# 
#   Developers that use the GNU GPL protect your rights with two steps:
# (1) assert copyright on the software, and (2) offer you this License
# giving you legal permission to copy, distribute and/or modify it.
# 
#   For the developers' and authors' protection, the GPL clearly explains
# that there is no warranty for this free software.  For both users' and
# authors' sake, the GPL requires that modified versions be marked as
# changed, so that their problems will not be attributed erroneously to
# authors of previous versions.
# 
#   Some devices are designed to deny users access to install or run
# modified versions of the software inside them, although the manufacturer
# can do so.  This is fundamentally incompatible with the aim of
# protecting users' freedom to change the software.  The systematic
# pattern of such abuse occurs in the area of products for individuals to
# use, which is precisely where it is most unacceptable.  Therefore, we
# have designed this version of the GPL to prohibit the practice for those
# products.  If such problems arise substantially in other domains, we
# stand ready to extend this provision to those domains in future versions
# of the GPL, as needed to protect the freedom of users.
# 
#   Finally, every program is threatened constantly by software patents.
# States should not allow patents to restrict development and use of
# software on general-purpose computers, but in those that do, we wish to
# avoid the special danger that patents applied to a free program could
# make it effectively proprietary.  To prevent this, the GPL assures that
# patents cannot be used to render the program non-free.
# 
#   The precise terms and conditions for copying, distribution and
# modification follow.
# 
#                        TERMS AND CONDITIONS
# 
#   0. Definitions.
# 
#   "This License" refers to version 3 of the GNU General Public License.
# 
#   "Copyright" also means copyright-like laws that apply to other kinds of
# works, such as semiconductor masks.
# 
#   "The Program" refers to any copyrightable work licensed under this
# License.  Each licensee is addressed as "you".  "Licensees" and
# "recipients" may be individuals or organizations.
# 
#   To "modify" a work means to copy from or adapt all or part of the work
# in a fashion requiring copyright permission, other than the making of an
# exact copy.  The resulting work is called a "modified version" of the
# earlier work or a work "based on" the earlier work.
# 
#   A "covered work" means either the unmodified Program or a work based
# on the Program.
# 
#   To "propagate" a work means to do anything with it that, without
# permission, would make you directly or secondarily liable for
# infringement under applicable copyright law, except executing it on a
# computer or modifying a private copy.  Propagation includes copying,
# distribution (with or without modification), making available to the
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