Re: [Boost-build] MinGW: .lib rather than .a?

From: Vladimir Prus (ghost_at_[hidden])
Date: 2008-04-07 03:45:50

On Friday 22 February 2008 21:56:41 Edd Dawson wrote:
> Vladimir Prus wrote:
> > Edd Dawson wrote:
> 
> > Can you clarify? It is believed that the search rules for mingw are as
> > below, and therefore .lib files should be found.
> > 
> >         # windows (mingw,cygwin) -Bstatic -lxxx
> >         #    libxxx.a
> >         #    xxx.lib
> >         #
> >         # windows (mingw,cygwin) -Bdynamic -lxxx
> >         #    libxxx.dll.a
> >         #    xxx.dll.a
> >         #    libxxx.a
> >         #    xxx.lib
> >         #    cygxxx.dll (*)
> >         #    libxxx.dll
> >         #    xxx.dll
> >         #    libxxx.a
> 
> P:\guff\mingw_bb>dir
>   Volume in drive P has no label.
>   Volume Serial Number is 9C8D-CEF7
> 
>   Directory of P:\guff\mingw_bb
> 
> 22/02/2008  18:51    <DIR>          .
> 22/02/2008  18:51    <DIR>          ..
> 22/02/2008  18:38                15 main.cpp
>                 1 File(s)             15 bytes
>                 2 Dir(s)  43,348,398,080 bytes free
> 
> P:\guff\mingw_bb>dir P:\boost\boost-1_35\lib\libboost_thread*
>   Volume in drive P has no label.
>   Volume Serial Number is 9C8D-CEF7
> 
>   Directory of P:\boost\boost-1_35\lib
> 
> 22/02/2008  17:28            81,608 libboost_thread-mgw42-mt-1_35.lib
> 22/02/2008  18:21           547,454 libboost_thread-mgw42-mt-sd-1_35.lib
> 22/02/2008  17:28            81,608 libboost_thread-mgw42-mt.lib
>                 3 File(s)        710,670 bytes
>                 0 Dir(s)  43,348,398,080 bytes free
> 
> P:\guff\mingw_bb>type main.cpp
> int main() { }
> 
> P:\guff\mingw_bb>g++ -c main.cpp -o main.o
> 
> P:\guff\mingw_bb>g++ main.o -o app -LP:\boost\boost-1_35\lib 
> -lboost_thread-mgw42-mt-1_35
> C:\development\MinGW\4.2.1-dw2-2\bin/ld.exe: cannot find 
> -lboost_thread-mgw42-mt-1_35
> collect2: ld returned 1 exit status
> 
> P:\guff\mingw_bb>
> 
> 
> I happen to be using a pre-release build of MinGW, here, but the same applies to 
> the current 3.4.5 release.
> 
> If I rename the library from .lib to .a, things work fine.

Roland,
can you comment if the above is some issue with recent mingw, or improper usage?

Thanks,
Volodya