W dniu 2013-07-20 20:00, Paul Fertser pisze: > I think that's a red herring. The real issue here is that > > i686-w64-mingw32-gcc -std=gnu99 -o conftest.exe -g -O2 > -D__USE_MINGW_ANSI_STDIO conftest.c -lusb-1.0 -lftdi -lusb > > says "undefined reference to `libusb_error_name'". Why doesn't mingw > see that cross-compiled libusb-1.0 on your system is new enough and > actually has that function? The function prototype doesn't matter for > linkage, and autoconf test here is caring only about the linkage.
It's not - check my first message. If I replace the faulty declaration of the function (without WINAPI and without parameters) with: #include <libusb-1.0/libusb.h> (and add the parameter to the actuall call) everything works perfectly. And the only differences are: - WINAPI - single parameter. WINAPI causes name-mangling - the linker checks for "libusb_error_name", but the real name of this function for windows is "_libusb_error_name@4" - all because of WINAPI and a single 4-byte parameter. The function prototype here is crucial, because WINAPI calls are NOT normal function calls and the configure test checks for a plain "normal" function. If I manually include <windows.h> and add WINAPI to the prototype it still fails, but this time there's an undefined reference to "_libusb_error_name@0", because the prototype says the function takes no parameters. Take a look at my first message in the thread - all the details, with my version of the test that works - are there. 4\/3!! ------------------------------------------------------------------------------ See everything from the browser to the database with AppDynamics Get end-to-end visibility with application monitoring from AppDynamics Isolate bottlenecks and diagnose root cause in seconds. Start your free trial of AppDynamics Pro today! http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.clktrk _______________________________________________ OpenOCD-devel mailing list OpenOCD-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/openocd-devel
