Date: Fri, 30 May 2008 10:34:22 -0400
From: Christopher Faylor <cgf-use-the-mailinglist-please@cygwin.com>
To: cygwin@cygwin.com
Subject: Re: binutils 20080523-1: version string breaks python2.5 distutils
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On Fri, May 30, 2008 at 08:16:10AM -0400, Jason Tishler wrote:
>On Thu, May 29, 2008 at 12:48:38PM -0400, Christopher Faylor wrote:
>> Why is python even checking the version?
>
>Python (i.e., Distutils) is checking versions so that it calls the
>appropriate driver and supplies the appropriate options.  For example,
>in cygwinccompiler.py we have the following:
>
>    # ld_version >= "2.10.90" and < "2.13" should also be able to use
>    # gcc -mdll instead of dllwrap
>    # Older dllwraps had own version numbers, newer ones use the
>    # same as the rest of binutils ( also ld )
>    # dllwrap 2.10.90 is buggy
>    if self.ld_version >= "2.10.90":
>        self.linker_dll = "gcc"
>    else:
>        self.linker_dll = "dllwrap"
>            
>    # ld_version >= "2.13" support -shared so use it instead of
>    # -mdll -static
>    if self.ld_version >= "2.13":
>        shared_option = "-shared"
>    else:
>        shared_option = "-mdll -static"
>
>> That seems very fragile to me.
>
>Agreed, but this stuff predates me (i.e., before 2000), so I loathe to
>touch it... :,)

Aw, come on, Jason.  Touch it!  Destroy it!  Fix it!

But, seriously, could you get the same behavior by parsing the ld --help
output?

cgf

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