#!/bin/sh
#
# Copyright (c) 2004-2006 The Trustees of Indiana University and Indiana
#                         University Research and Technology
#                         Corporation.  All rights reserved.
# Copyright (c) 2004-2005 The University of Tennessee and The University
#                         of Tennessee Research Foundation.  All rights
#                         reserved.
# Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
#                         University of Stuttgart.  All rights reserved.
# Copyright (c) 2004-2005 The Regents of the University of California.
#                         All rights reserved.
# Copyright (c) 2008-2015 Cisco Systems, Inc.  All rights reserved.
# $COPYRIGHT$
#
# Additional copyrights may follow
#
# $HEADER$
#

#
# Version of auto tools that we want
#

M4_TARGET_VERSION=1.4.17
AM_TARGET_VERSION=1.15
AC_TARGET_VERSION=2.69
LT_TARGET_VERSION=2.4.6
FLEX_TARGET_VERSION=2.5.35

#
# When running "make distcheck", use these parallelization flags.  Can
# significantly decrease the time required for "make distcheck" because
# that target includes multiple builds of the entire code base.
#

DISTCHECK_MAKE_FLAGS=-j4

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

#
# Check command line flags
#

# Default to requiring *exact* versions if we're making distribution
# tarballs; but higher-than-expected versions are ok for
# non-distribution tarballs.
want_ompi=1
autogen_args=
distdir=".."
greekonly=0
dirty_ok=0
gnu_version_ignore=0
dist_target=distcheck
distcheck_flags="AM_MAKEFLAGS=$DISTCHECK_MAKE_FLAGS"
git_update=1

if test "`basename $0`" = "make_tarball"; then
    dist_target=dist
    distcheck_flags="AM_MAKEFLAGS=-j32"
    highok=1
    dirty_ok=1
    greekonly=1
else
    highok=0
fi

while test "$1" != ""; do
    case $1 in
        --greekonly) greekonly=1 ;;
        --highok) highok=1 ;;
        --no-ompi) want_ompi=0 ;;
        --autogen-args) autogen_args=$2; shift ;;
        --distdir) distdir=$2; shift ;;
        --dirtyok) dirty_ok=1 ;;
        --verok) gnu_version_ignore=1;;
        --no-git-update) git_update=0;;
        *)
            cat <<EOF
Unrecognized argument: $1

Valid arguments:
  --greekonly     Only build the greek tarball (vs. both tarballs)
  --highok        Ok if Autotools versions are too high
  --no-ompi       Don't build the OMPI or OSHMEM layers
  --autogen-args  Arguments to pass to autogen
  --distdir       Move the tarball(s) to this directory when done
  --dirtyok       Ok if the source tree is dirty
  --verok         Ignore result of autotools version checking
  --no-git-update Skip "git pull" part, assume local repo is updated already
EOF
            exit 1
            ;;
    esac
    shift
done

#
# First things first -- check that the auto versions that we have are
# the ones that we want.
#

check_gnu_version() {
    prog="$1"
    target="$2"

    ver="`$prog --version | head -n 1 | sed -e's/([^)]*)//g' -e's/[^0-9 .][^ ]* / /g' -e's/ //g'`"
    echo $prog version is $ver

    ver_major=`echo $ver | cut -d. -f1`
    ver_minor=`echo $ver | cut -d. -f2`
    ver_release=`echo $ver | cut -d. -f3`
    if test "$ver_release" = ""; then
        ver_release=0
    fi

    target_major=`echo $target | cut -d. -f1`
    target_minor=`echo $target | cut -d. -f2`
    target_release=`echo $target | cut -d. -f3`
    if test "$target_release" = ""; then
        target_release=0
    fi

    # Gah -- Libtool released version 2.2.6b, the "b" of which totally
    # screws up the -lt and -gt comparisons, below.  So strip out any
    # trailing letters in the target_release and ver_release variables
    # -- if they don't match, we'll just get a "they don't match
    # somehow" kind of message (because I'm not going to code up a
    # complex/clever alphanumeric lower/higher comparison thingy).
    # Sigh.
    ver_release=`echo $ver_release | sed 's/[A-Za-z]//g'`
    target_release=`echo $target_release | sed 's/[A-Za-z]//g'`

    result=same
    if test "$ver" != "$target"; then
        if test "$ver_major" -lt "$target_major"; then
            result=low
        elif test "$ver_major" = "$target_major" -a "$ver_minor" -lt "$target_minor"; then
            result=low
        elif test "$ver_major" = "$target_major" -a "$ver_minor" = "$target_minor" -a "$ver_release" -lt "$target_release"; then
            result=low
        elif test "$ver_major" -gt "$target_major"; then
            result=high
        elif test "$ver_major" = "$target_major" -a "$ver_minor" -gt "$target_minor"; then
            result=high
        elif test "$ver_major" = "$target_major" -a "$ver_minor" = "$target_minor" -a "$ver_release" = "$target_release"; then
            result=same
        elif test "$ver_major" = "$target_major" -a "$ver_minor" = "$target_minor" -a "$ver_release" -gt "$target_release"; then
            result=high
        elif test "$ver_major" = "$target_major" -a "$ver_minor" = "$target_minor" -a "$ver_release" -lt "$target_release"; then
            result=low
        else
            result=unknown
        fi
    fi

    if test "$result" = "low"; then
        cat <<EOF
----------------------------------------------------------------------
ERROR: Program "$prog" does not have a high enough version:
       Found: $ver
       Expected: $target

Expected versions:
m4: $M4_TARGET_VERSION
Automake: $AM_TARGET_VERSION
Autoconf: $AC_TARGET_VERSION
Libtool:  $LT_TARGET_VERSION
Flex:     $FLEX_TARGET_VERSION

Either change this script to match the found version, or install
the correct version of the tools.
----------------------------------------------------------------------
EOF
        if test "$gnu_version_ignore" = "0"; then
            exit 1
        fi

    elif test "$result" = "high"; then
        if test "$highok" = "0"; then
            cat <<EOF
----------------------------------------------------------------------
ERROR: Program "$prog" has a higher version than expected:
       Found: $ver
       Expected: $target

Expected versions:
m4: $M4_TARGET_VERSION
Automake: $AM_TARGET_VERSION
Autoconf: $AC_TARGET_VERSION
Libtool:  $LT_TARGET_VERSION
Flex:     $FLEX_TARGET_VERSION

Either change this script to match the found version, or install
the correct version of the tools.
----------------------------------------------------------------------
EOF
        if test "$gnu_version_ignore" = "0"; then
            exit 1
        fi
        else
            cat <<EOF
----------------------------------------------------------------------
WARNING: Program "$prog" has a higher version than expected:
         Found: $ver
         Expected: $target

Expected versions:
m4: $M4_TARGET_VERSION
Automake: $AM_TARGET_VERSION
Autoconf: $AC_TARGET_VERSION
Libtool:  $LT_TARGET_VERSION
Flex:     $FLEX_TARGET_VERSION

This is *usually* ok, but this script is going to sleep for 5 seconds
to give you the chance to quit before doing anything.
----------------------------------------------------------------------
EOF
            sleep 5
        fi

    elif test "$result" = "unknown"; then
        cat <<EOF
----------------------------------------------------------------------
ERROR: Program "$prog" does not have the correct version:
       Found: $ver
       Expected: $target

Expected versions:
m4: $M4_TARGET_VERSION
Automake: $AM_TARGET_VERSION
Autoconf: $AC_TARGET_VERSION
Libtool:  $LT_TARGET_VERSION
Flex:     $FLEX_TARGET_VERSION

Either change this script to match the found version, or install
the correct version of the tools.
----------------------------------------------------------------------
EOF
        if test "$gnu_version_ignore" = "0"; then
            exit 1
        fi
    fi

}

#
# Subroutine to actually make a tarball
#

make_tarball() {
    #
    # Autogen
    #
    echo "*** Running autogen $autogen_args..."
    rm -f success
    if test "$want_ompi" = "1" ; then
        (./autogen.pl $autogen_args 2>&1 && touch success) | tee auto.out
    else
        (./autogen.pl --no-ompi $autogen_args 2>&1 && touch success) | tee auto.out
    fi
    if test ! -f success; then
        echo "Autogen failed.  Aborting"
        exit 1
    fi

    #
    # Configure
    #
    echo "*** Running configure..."
    rm -f success
    (./configure 2>&1 && touch success) | tee config.out
    if test ! -f success; then
        echo "Configure failed.  Aborting"
        exit 1
    fi

    #
    # Remove all generated *_lex.c files so that we ensure to invoke
    # flex from here in this script (to ensure that we're using a good
    # version of flex, and not picking up random *_lex.c files that
    # happened to be in the tree already).
    #
    echo "*** Removing old generated flex files..."
    find . -name \*_lex.c -exec chmod ug+rw {} \; -exec rm -f {} \; -print

    #
    # make tarball
    #
    echo "*** Running make $dist_target..."
    save_LD=$LD_LIBRARY_PATH
    LD_LIBRARY_PATH=
    rm -f success
    (make $distcheck_flags $dist_target 2>&1 && touch success) | tee dist.out
    if test ! -f success; then
        echo "Make $dist_target failed.  Aborting"
        exit 1
    fi
    rm -f success
    LD_LIBRARY_PATH=$save_LD

    #
    # move
    #
    echo "*** Moving tarballs..."
    mv openmpi-* $distdir

    echo "*** All done"
}

#########################################################################
# main
#########################################################################

start=`date`
echo "*** Start time: $start"

echo "*** Checking tools versions..."
check_gnu_version m4 $M4_TARGET_VERSION
check_gnu_version automake $AM_TARGET_VERSION
check_gnu_version autoconf $AC_TARGET_VERSION
check_gnu_version libtool $LT_TARGET_VERSION
# Windows needs a recent version of flex; old versions don't generate
# Windows-friendly *_lex.c files.
check_gnu_version flex $FLEX_TARGET_VERSION

#
# Verify that we're in a top Open MPI dir
#
echo "*** Checking to ensure in top-level Open MPI directory..."
if test -f VERSION -a -f configure.ac -a -f config/opal_get_version.m4 ; then
    happy=1
else
    echo "Do not appear to be in an Open MPI top directory.  Abort!"
    exit 1
fi

if test $git_update -eq 1; then

    #
    # Get the latest
    #
    echo "*** Git pull to get the latest..."
    git pull --rebase
    if test $? -ne 0; then
        echo "*** Git pull failed.  Cannot continue."
        exit 1
    fi
fi

#
# Ensure we have a clean repo
#
if test $dirty_ok -eq 0; then
    echo "*** Checking if source tree is dirty..."
    dirty=0
    file=git-status.$$.out
    git status > $file
    if test "`grep 'Changes not staged for commit' $file`" != "" ||
       test "`grep 'Changes staged for commit' $file`" != ""; then
        dirty=1
    fi
    rm -f $file

    if test $dirty -eq 1; then
        echo "    Source tree is dirty.  Cannot continue."
        exit 1
    fi
fi

#
# Get our repo_rev
#
echo "*** Removing old VERSION file..."
rm -f VERSION
echo "*** Restoring pristine VERSION file..."
git checkout VERSION
echo "*** Getting git version..."
repo_rev=`git describe --tags --always`
echo "    Repo rev number: $repo_rev"

# Sanity checks
if test "$repo_rev" = ""; then
    echo "Somehow the repo rev number is empty.  Abort!"
    exit 1
elif test "`echo $repo_rev | grep ' '`" != ""; then
    echo "Somehow the repo rev number has a space in it -- bad!"
    exit 1
fi

#
# Set final values in VERSION
#
echo "*** Removing version numbers from VERSION..."
version_files=VERSION
release_date=`date '+%b %d, %Y'`
echo "    Release date: $release_date"
for file in $version_files; do
    echo " - $file"
    sed -e 's/^repo_rev=.*/'repo_rev=$repo_rev/ \
        -e "s/^date=.*/date=\"$release_date\"/" \
        -e "s/^tarball_version=.*/tarball_version=/" \
        $file > $file.new
    cp -f $file.new $file
    rm $file.new
done

#
# Make 2 tarballs:
#
# - one with the greek
# - one without the greek
#
# unless the user specifically said --greekonly, then only make the
# greek tarball.  Making both tarballs at once allows us to guarantee
# to have two tarballs -- one greek and one not -- that have exactly
# the same SVN r number (as opposed to, for example, running this
# script to make a greek tarball, then running it again to make a
# non-greek tarball -- there is a race condition that someone could
# commit in the meantime and change the SVN r number in the 2nd
# tarball)
#

# First, make greek tarball

echo "*** Making greek tarball"
make_tarball

# Now if ! --greekonly, make the non-greek tarball

if test $greekonly -eq 0; then
    echo "*** REMOVING ALL GREEK FROM VERSION NUMBERS!!"
    for file in $version_files; do
        echo " - $file"
        sed -e 's/^greek=.*/greek=/' $file > $file.new
        cp -f $file.new $file
        rm $file.new
    done
    echo "Making non-greek tarball"
    make_tarball
fi

# Put the VERSION file back the way it was
rm -f VERSION
git checkout VERSION

echo " "
echo "*** Start time:  $start"
echo "*** Finish time: `date`"