Libusb

Hi everyone,
I tried to execute "testlibusb.c" but following error occurred:

Code:

---

:-1: error: No rule to make target '.../LIBUSBTEST/LIBUSB/MinGW32/static/liblibusb-1.0d.a', needed by 'debug\LIBUSBTEST.exe'.  Stop.

---

I added "libusb.h" by right click on project name and 'add existing files'
and also "libusb-1.0.a" by right click on project name and 'add library' (static library).

Code:

---

HEADERS += \
    libusb.h
 
SOURCES += \
    testlibusb.c
 
win32:CONFIG(release, debug|release): LIBS += -L$$PWD/LIBUSB/MinGW32/static/ -llibusb-1.0
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/LIBUSB/MinGW32/static/ -llibusb-1.0d
 
INCLUDEPATH += $$PWD/LIBUSB/MinGW32/static
DEPENDPATH += $$PWD/LIBUSB/MinGW32/static
 
win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$PWD/LIBUSB/MinGW32/static/liblibusb-1.0.a
else:win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$PWD/LIBUSB/MinGW32/static/liblibusb-1.0d.a
else:win32:!win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$PWD/LIBUSB/MinGW32/static/libusb-1.0.lib
else:win32:!win32-g++:CONFIG(debug, debug|release): PRE_TARGETDEPS += $$PWD/LIBUSB/MinGW32/static/libusb-1.0d.lib

---

I do not have any idea what should I do.

Does another library exist which can be used in Qt?

After few modification following errors occurred:

Attachment 12906

It looks to me as though you are trying to link to an incompatible version of libusb. It could be incompatible for any number of reasons:

- it was built with a different compiler,
- it was built for a different OS (Windows uses .lib / .dll for libraries, not .lib / .a)
- it was built as debug or release and you are specifying the wrong one to release or debug
- you are trying to link as static to a DLL
- you are using a preprocessor #define that is telling the compiler you will be linking to a DLL when you actually aren't

If you haven't built this libusb yourself, then I would guess it is almost certainly an incompatibility between the library you have and the toolchain you are using to build your app.

Thanks for your reply.