found=0

echo 'Checking for uintptr_t'

    echo '#include <sys/types.h>' > autotest.c
    echo 'int main() { uintptr_t i = 0; return i; }' >> autotest.c

    eval "${CC} -o autotest autotest.c > /dev/null 2>&1"

    if [ -x autotest ]; then
        echo ' + uintptr_t found'
        found=1
    else
        echo ' + uintptr_t not found'
    fi

    rm autotest*


if [ $found = 0 ]; then
    echo 'int main() { printf("%d", 8 * sizeof(void *)); return 0; }'	\
          > autotest.c
    eval "${CC} -o autotest autotest.c > /dev/null 2>&1"

    if [ -x autotest ]; then
        type="uint`./autotest`_t"
        echo " + $type used"
        type="typedef $type  uintptr_t;"
        found=2
    fi

    rm autotest*
fi


if [ $found = 0 ]; then
    echo "$0: error: uintptr_t not found"
    exit 1
fi


if [ $found = 2 ]; then
    echo $type >> ngx_auto_config.h
    echo >> ngx_auto_config.h
fi