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#!/bin/sh

# Flags:
#   --no-clean:       don't make clean first, just carry on from
#                     a previous interrupted validation run
#   --testsuite-only: don't build the compiler, just run
#                     the test suite
#   --hpc:            build stage2 with -fhpc, and see how much of the
#                     compiler the test suite covers.
#                     2008-07-01: 63% slower than the default.
#                     HTML generated here: testsuite/hpc_output/hpc_index.html
#   --normal:         Default settings
#   --fast:           Omit dyn way, omit binary distribution
#   --slow:           Build stage2 with -DDEBUG.
#                     2008-07-01: 14% slower than the default.

set -e

no_clean=0
testsuite_only=0
hpc=NO
speed=NORMAL

while [ $# -gt 0 ]
do
    case "$1" in
    --no-clean)
        no_clean=1
        ;;
    --testsuite-only)
        testsuite_only=1
        ;;
    --hpc)
        hpc=YES
        ;;
    --slow)
        speed=SLOW
        ;;
    --fast)
        speed=FAST
        ;;
    --normal)
        speed=NORMAL
        ;;
    *)
        echo "Bad argument: $1" >&2
        exit 1;;
    esac
    shift
done

if ! [ -d testsuite ]
then
    echo 'You need the testsuite to validate' >&2
    echo 'Run "./sync-all --testsuite get" to get it' >&2
    exit 1
fi

if [ "$THREADS" = "" ]; then
    if [ "$CPUS" = "" ]; then
        threads=2
    else
        threads=$(($CPUS + 1)) # `expr $CPUS + 1`
    fi
else
    threads="$THREADS"
fi

if type gmake > /dev/null 2> /dev/null
then
    make="gmake"
else
    make="make"
fi

if [ $testsuite_only -eq 0 ]; then

if [ $no_clean -eq 0 ]; then
    $make maintainer-clean NO_CLEAN_GMP=YES

    INSTDIR=`pwd`/inst
    if [ "$OSTYPE" = "cygwin" ]
    then
        INSTDIR=`cygpath -m "$INSTDIR"`
    fi

    /usr/bin/perl -w boot --validate --required-tag=dph
    ./configure --prefix="$INSTDIR" $config_args
fi

thisdir=`utils/ghc-pwd/dist-boot/ghc-pwd`

echo "Validating=YES"       >  mk/are-validating.mk
echo "ValidateSpeed=$speed" >> mk/are-validating.mk
echo "ValidateHpc=$hpc"     >> mk/are-validating.mk

$make -j$threads
# For a "debug make", add "--debug=b --debug=m"

# -----------------------------------------------------------------------------
# Build and test a binary distribution (not --fast)

if [ $speed != "FAST" ]; then

    $make binary-dist-prep
    $make test_bindist TEST_PREP=YES

    #
    # Install the transformers package into the bindist, because it is
    # used by some tests.
    # It isn't essential that we do this (the failing tests will
    # be treated as expected failures), but we get a bit more test
    # coverage, and also verify that we can install a package into the
    # bindist with Cabal.
    #
    bindistdir="bindisttest/install   dir"

    # This is a hack to make
    #     HADDOCK_DOCS = NO
    # work when validating.
    if grep -q "^HADDOCK_DOCS.*=.*NO" mk/validate.mk
    then
        unset WITH_HADDOCK
        DO_HADDOCK=NO
    else
        WITH_HADDOCK=--with-haddock="$thisdir/$bindistdir/bin/haddock"
        DO_HADDOCK=YES
    fi

    cd libraries/transformers
    "$thisdir/$bindistdir/bin/ghc" --make Setup

    ./Setup configure --with-ghc="$thisdir/$bindistdir/bin/ghc" ${WITH_HADDOCK+"$WITH_HADDOCK"} --global --builddir=dist-bindist --prefix="$thisdir/$bindistdir"
    ./Setup build   --builddir=dist-bindist
    [ "$DO_HADDOCK" = "YES" ] && ./Setup haddock --builddir=dist-bindist
    ./Setup install --builddir=dist-bindist
    ./Setup clean   --builddir=dist-bindist
    rm -f Setup Setup.exe Setup.hi Setup.o
    cd $thisdir
fi

fi # testsuite-only

# -----------------------------------------------------------------------------
# Run the testsuite

if [ "$hpc" = YES ]
then
    # XXX With threads we'd need to give a different tix file to each thread
    #     and then sum them up at the end
    threads=1
    HPCTIXFILE=$thisdir/testsuite/hpc_output/ghc.tix
    export HPCTIXFILE
    rm -f $HPCTIXFILE
fi

case "$speed" in
SLOW)
        MAKE_TEST_TARGET=fulltest
        BINDIST="BINDIST=YES"
        ;;
NORMAL)
        MAKE_TEST_TARGET=test
        BINDIST="BINDIST=YES"
        ;;
FAST)
        MAKE_TEST_TARGET=test
        BINDIST="BINDIST=NO"
        ;;
esac

$make $MAKE_TEST_TARGET stage=2 $BINDIST THREADS=$threads 2>&1 | tee testlog

if [ "$hpc" = YES ]
then
    utils/hpc/hpc markup --hpcdir=. --srcdir=compiler --srcdir=testsuite/hpc_output --destdir=testsuite/hpc_output testsuite/hpc_output/ghc.tix
fi

echo "-------------------------------------------------------------------"
if
    grep '\<0 caused framework failures' testlog >/dev/null 2>/dev/null &&
    grep '\<0 unexpected passes' testlog >/dev/null 2>/dev/null &&
    grep '\<0 unexpected failures' testlog >/dev/null 2>/dev/null &&
    ! grep 'Some files are written by multiple tests' testlog >/dev/null 2>/dev/null ; then
    if [ $testsuite_only -eq 0 ] && [ $no_clean -eq 0 ]
    then
        cat <<EOF
Congratulations!  This tree has passed minimal testing.

NOTE: If you have made changes that may cause failures not tested for by
the minimal testing procedure, please do further testing as necessary.

When you are satisfied that you haven't broken anything, go ahead and
push/send your patches.
EOF
        if [ -f mk/validate.mk ] && grep -q "^[^#]" mk/validate.mk
        then
            cat <<EOF

WARNING: You seem to have things set in mk/validate.mk. Please check
that it is OK before pushing.
EOF
        fi
        cat <<EOF
-------------------------------------------------------------------
EOF
    else
        cat <<EOF
I didn't find any problems, but this wasn't a complete validate run,
so be careful!

NOTE: If you have made changes that may cause failures not tested for by
the minimal testing procedure, please do further testing as necessary.
-------------------------------------------------------------------
EOF
   fi
else
    cat <<EOF
Oops!  Looks like you have some unexpected test results or framework failures.
Please fix them before pushing/sending patches.
-------------------------------------------------------------------
EOF
    exit 1
fi