Custom Query (344 matches)

Currently, if one uses YUM to install libusb10, or any app that depends on it, it will also insist on installing usbcalls as a dependency (if not already installed by YUM). But anyone who has installed the Arca Noae USB stack will already have the correct version of usbcalls.dll. This creates the potential for a mis-match. It would be best if the YUM version of libusb could detect if usbcalls is already installed, even by another installer, and allow not installing the YUM version of usbcalls.

I discovered a strange problem with os.popen regarding paths containing backslashes:

import os

gcc_exe = "C:\\usr\\bin\\gcc.exe"

print "["+repr(gcc_exe)+"]"

# [1] This works
exists = os.access(gcc_exe, os.X_OK)
print "exists", exists

if exists:

    # [2] This works too, if uncommented
    #os.execl(gcc_exe, "gcc", "-dumpversion")

    # [3] This doesn't work :(((
    out = os.popen(gcc_exe + ' -dumpversion', 'r')
    try:
        out_string = out.read()
        print out_string
    finally:
        out.close()

This gives the following output here:

D:>python popen.py
['C:\\usr\\bin\\gcc.exe']
exists True
C:usrbingcc.exe: not found

Both [1] and [2] cases work, but case [3] does not. Seems that some extra string evaluation happens before the string is passed down to the popen implementation (as if str(gcc_exe) were called) which effectively kills backslashes.

There was #134 which dealt with this issue already but it also touched some other topics which were resolved and the ticket twas closed. However, the main task is not complete, hence the new ticket. It's target is to implement the %debug_package macro so that it automatically creates debug packages when invoked, according to the debug package creation rules that we establish.