Re: [ECOS] Compile USB Host Application

[Bart Veer <bartv at ecoscentric dot com>]

>>>>> "Navya" == Navya S Kamath <navya@coreel.com> writes:

    Navya> Hi All,
    Navya> I'm trying to compile the USB host application on a RedHat
    Navya> Enterprise Linux, I get following errors

    Navya> usbhost.o(.text+0xb4): In function `usb_scan_devices':
    Navya> : undefined reference to `__fgetc_unlocked'
    Navya> usbhost.o(.text+0x197): In function `usb_scan_devices':
    Navya> : undefined reference to `__fgetc_unlocked'
    Navya> usbhost.o(.text+0x207): In function `usb_scan_devices':
    Navya> : undefined reference to `__fgetc_unlocked'
    Navya> usbhost.o(.text+0x163d): In function `run_test_bulk_out':
    Navya> : undefined reference to `__glibc_strerror_r'
    Navya> usbhost.o(.text+0x1e4b): In function `run_test_bulk_in':
    Navya> : undefined reference to `__glibc_strerror_r'
    Navya> usbhost.o(.text+0x2807): In function `run_test_control_in':
    Navya> : undefined reference to `__glibc_strerror_r'

    Navya> I include file /usr/local/include/stdio.h has these
    Navya> definitions.Anybody faced such errors before? Please help

It is not clear that usbhost is going to compile easily on any current
Linux system due to incompatible changes in the Linux world. For
example my Fedora 7 system no longer has a <linux/usb.h> header,
instead there is a <linux/usb/ch9.h> header which appears much to have
the same contents.

However I think that your immediate problem is that the build is
picking up the wrong header files. I do not know where
/usr/local/include/stdio.h comes from, but the usbhost build should be
using the official header files from /usr/include.

Bart

-- 
Bart Veer                                   eCos Configuration Architect
eCosCentric Limited    The eCos experts      http://www.ecoscentric.com/
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