# Copyright (C) 2024 Web Server LLC
# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


if check_cache "little endian" "endianness"; then
    return
fi

echo $ngx_n "checking for system byte ordering ...$ngx_c"

cat << END >> $NGX_AUTOCONF_ERR

----------------------------------------
checking for system byte ordering

END

ngx_found=no

cat << END > $NGX_AUTOTEST.c

int main(void) {
    int i = 0x11223344;
    char *p;

    p = (char *) &i;
    if (*p == 0x44) return 0;
    return 1;
}

END

ngx_test="($CC -c $CC_TEST_FLAGS $CC_AUX_FLAGS \
           -o $NGX_AUTOTEST.o $NGX_AUTOTEST.c && \
           $CC $CC_TEST_FLAGS $CC_AUX_FLAGS \
           -o $NGX_AUTOTEST $NGX_AUTOTEST.o $NGX_LD_OPT $ngx_feature_libs)"

eval "$ngx_test >> $NGX_AUTOCONF_ERR 2>&1"

if [ -x $NGX_AUTOTEST ]; then
    if runtest "endianness" ""; then
        echo " little endian"
        have=NGX_HAVE_LITTLE_ENDIAN . auto/have
        ngx_found=yes
    else
        echo " big endian"
    fi

    rm -rf $NGX_AUTOTEST*

else
    rm -rf $NGX_AUTOTEST*

    echo
    echo "$0: error: cannot detect system byte ordering"
    exit 1
fi

if [ $NGX_FEATURE_CACHE = NO ]; then
    return
fi

cache_output_start

echo "ngx_found=$ngx_found"

if [ $ngx_found = yes ]; then
    echo "have=NGX_HAVE_LITTLE_ENDIAN . auto/have"
fi

cache_output_end