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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

set -e

no_clean=0
testsuite_only=0

while [ $# -gt 0 ]
do
    case "$1" in
    --no-clean)
        no_clean=1
        ;;
    --testsuite-only)
        testsuite_only=1
        ;;
    *)
        echo "Bad argument: $1" >&2
        exit 1;;
    esac
    shift
done

if [ $testsuite_only -eq 0 ]; then

if [ $no_clean -eq 0 ] && [ -f mk/config.mk ]; then
    make distclean
fi

case $OSTYPE in
    cygwin|msys) config_args=--build=i386-unknown-mingw32
        if [ -f c:/mingw/bin/gcc.exe ]
        then
            config_args="$config_args --with-gcc=c:/mingw/bin/gcc"
        fi
        ;;
esac

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

sh boot
./configure "--prefix=`pwd`/inst" $config_args

make Validating=YES -j$threads
fi # testsuite-only

make Validating=YES -C testsuite/tests/ghc-regress fast stage=2 CLEANUP=1 THREADS=$threads 2>&1 | tee testlog

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 ; 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
    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
fi
echo "-------------------------------------------------------------------"