Mail Archives: cygwin/2005/08/19/12:01:33
On Fri, Aug 19, 2005 at 08:48:43AM -0700, Brian Dessent wrote:
>Igor Pechtchanski wrote:
>
>> Umm, Gerrit, I don't think the underlined part is true anymore:
>>
>> $ cd /usr/lib && ls -li libm.a libcygwin.a
>> 1407374883609665 -r-xr-xr-x+ 1 igor Users 956656 Jul 2 20:30 libcygwin.a*
>> 1407374883609668 -r-xr-xr-x+ 1 igor Users 92616 Jul 2 20:30 libm.a*
>> $ uname -a
>> CYGWIN_NT-5.1 pechtcha 1.5.18(0.132/4/2) 2005-07-02 20:30 i686 unknown unknown Cygwin
>>
>> -lcygwin *is* added automatically, but not -lm.
>
>libm is a subcomponent of the final cygwin1.dll, which merges several
>such components. There's also libpthread, libc, libserver, libutil, the
>malloc code, the startup code (etc.) all of which are combined to make
>cygwin1.dll. As far as I know this is only done for link efficiency, as
>these sub-libs are never distributed and probably don't work as
>standalone libraries.
Adding -lm is a complete no-op. I dont' think it will improve any link
efficieny since it is just a subcomponent of libcygwin.a and libcygwin.a
is always searched anyway.
Removing it from link lines is the way to go, IMO.
cgf
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