#!/bin/sh

set -eux

export LC_ALL=C

# Print commit and relevant CI environment to allow reproducing the job outside of CI.
git show --no-patch
print_environment() {
    # Turn off -x because it messes up the output
    set +x
    # There are many ways to print variable names and their content. This one
    # does not rely on bash.
    for var in WERROR_CFLAGS MAKEFLAGS BUILD \
            ECMULTWINDOW ECMULTGENPRECISION ASM WIDEMUL WITH_VALGRIND EXTRAFLAGS \
            EXPERIMENTAL ECDH RECOVERY SCHNORRSIG ELLSWIFT \
            SECP256K1_TEST_ITERS BENCH SECP256K1_BENCH_ITERS CTIMETESTS\
            EXAMPLES \
            HOST WRAPPER_CMD \
            CC CFLAGS CPPFLAGS AR NM \
            UBSAN_OPTIONS ASAN_OPTIONS LSAN_OPTIONS
    do
        eval "isset=\${$var+x}"
        if [ -n "$isset" ]; then
            eval "val=\${$var}"
            # shellcheck disable=SC2154
            printf '%s="%s" ' "$var" "$val"
        fi
    done
    echo "$0"
    set -x
}
print_environment

env >> test_env.log

# If gcc is requested, assert that it's in fact gcc (and not some symlinked Apple clang).
case "${CC:-undefined}" in
    *gcc*)
        $CC -v 2>&1 | grep -q "gcc version" || exit 1;
        ;;
esac

if [ -n "${CC+x}" ]; then
    # The MSVC compiler "cl" doesn't understand "-v"
    $CC -v || true
fi
if [ "$WITH_VALGRIND" = "yes" ]; then
    valgrind --version
fi
if [ -n "$WRAPPER_CMD" ]; then
    $WRAPPER_CMD --version
fi

# Workaround for https://bugs.kde.org/show_bug.cgi?id=452758 (fixed in valgrind 3.20.0).
case "${CC:-undefined}" in
    clang*)
        if [ "$CTIMETESTS" = "yes" ] && [ "$WITH_VALGRIND" = "yes" ]
        then
            export CFLAGS="${CFLAGS:+$CFLAGS }-gdwarf-4"
        else
            case "$WRAPPER_CMD" in
                valgrind*)
                    export CFLAGS="${CFLAGS:+$CFLAGS }-gdwarf-4"
                    ;;
            esac
        fi
        ;;
esac

./autogen.sh

./configure \
    --enable-experimental="$EXPERIMENTAL" \
    --with-test-override-wide-multiply="$WIDEMUL" --with-asm="$ASM" \
    --with-ecmult-window="$ECMULTWINDOW" \
    --with-ecmult-gen-precision="$ECMULTGENPRECISION" \
    --enable-module-ecdh="$ECDH" --enable-module-recovery="$RECOVERY" \
    --enable-module-ellswift="$ELLSWIFT" \
    --enable-module-schnorrsig="$SCHNORRSIG" \
    --enable-examples="$EXAMPLES" \
    --enable-ctime-tests="$CTIMETESTS" \
    --with-valgrind="$WITH_VALGRIND" \
    --host="$HOST" $EXTRAFLAGS

# We have set "-j<n>" in MAKEFLAGS.
build_exit_code=0
make > make.log 2>&1 || build_exit_code=$?
cat make.log
if [ $build_exit_code -ne 0 ]; then
    case "${CC:-undefined}" in
        *snapshot*)
            # Ignore internal compiler errors in gcc-snapshot and clang-snapshot
            grep -e "internal compiler error:" -e "PLEASE submit a bug report" make.log
            return $?;
            ;;
        *)
            return 1;
            ;;
    esac
fi

# Print information about binaries so that we can see that the architecture is correct
file *tests* || true
file bench* || true
file .libs/* || true

# This tells `make check` to wrap test invocations.
export LOG_COMPILER="$WRAPPER_CMD"

make "$BUILD"

# Using the local `libtool` because on macOS the system's libtool has nothing to do with GNU libtool
EXEC='./libtool --mode=execute'
if [ -n "$WRAPPER_CMD" ]
then
    EXEC="$EXEC $WRAPPER_CMD"
fi

if [ "$BENCH" = "yes" ]
then
    {
        $EXEC ./bench_ecmult
        $EXEC ./bench_internal
        $EXEC ./bench
    } >> bench.log 2>&1
fi

if [ "$CTIMETESTS" = "yes" ]
then
    if [ "$WITH_VALGRIND" = "yes" ]; then
        ./libtool --mode=execute valgrind --error-exitcode=42 ./ctime_tests > ctime_tests.log 2>&1
    else
        $EXEC ./ctime_tests > ctime_tests.log 2>&1
    fi
fi

# Rebuild precomputed files (if not cross-compiling).
if [ -z "$HOST" ]
then
    make clean-precomp clean-testvectors
    make precomp testvectors
fi

# Check that no repo files have been modified by the build.
# (This fails for example if the precomp files need to be updated in the repo.)
git diff --exit-code