2013/4/4 nico <sl1200...@gmail.com>
> Hi,
> my compiler is Clang on MacOS 10.7.5.
> I run
> ./configure --disable-log --prefix=/opt/local
> make CFLAGS="-arch i386 -arch x86_64 -mmacosx-version-min=10.6"
> and here's the output:
>
> Making all in libusb
> CC libusb_1_0_la-core.lo
> core.c:1755:30: warning: use of logical '&&' with constant operand
> [-Wconstant-logical-operand]
> return (usbi_backend->caps && USBI_CAP_HAS_HID_ACCESS);
> ^ ~~~~~~~~~~~~~~~~~~~~~~~
> core.c:1755:30: note: use '&' for a bitwise operation
> return (usbi_backend->caps && USBI_CAP_HAS_HID_ACCESS);
> ^~
> &
> core.c:1755:30: note: remove constant to silence this warning
> return (usbi_backend->caps && USBI_CAP_HAS_HID_ACCESS);
> ~^~~~~~~~~~~~~~~~~~~~~~~~~~
>
It is not just a warning but a real bug.
libusb_has_capability() could _not_ work.
It is now fixed in
https://github.com/libusbx/libusbx/commit/fed4f7e47f49523c6a9469a2b25c7d995b1ebcd6
Thanks
--
Dr. Ludovic Rousseau
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