Re: [Boost-users] Issue linking to static boost thread library (Newbie)

From: Forever Kid (foreverkid3_at_[hidden])
Date: 2006-12-11 23:32:04

Thanks Raul, Nat, and Roland,

I appreciate the help.

I finally found my way here:

http://gcc.gnu.org/onlinedocs/gcc-4.1.1/gcc/Link-Options.html#Link-Options

It seems these are key for static linking:
-static -static-libgcc

I am not used to the gcc compiler and it seems like it
does dynamic linking by default.  Is that correct?   I
thought that -l specified static linking (it seems I
was wrong)

...and are currently using these options for compiling
and linking:

Compile:
g++ -I/home/quirk/dev/lib/boost_1_33_1/ -O0 -g3 -Wall
-c -fmessage-length=0 -pthread -MMD -MP -MF"main.d"
-MT"main.d" -o"main.o" "../main.cpp"
Finished building: ../main.cpp

Link: 
g++ -L/home/quirk/dev/lib/boost_1_33_1/stage/lib
-static -static-libgcc -o"ManagedMakeProject" 
./main.o   -lboost_thread-gcc-mt-d-1_33_1 -lpthread 

--- Raúl Huertas <raulh39_at_[hidden]> wrote:

> Forever Kid escribió:
> > Thanks for the reply.
> >
> > When I change the linker line to this (added the
> .a
> > extension):
> > g++
> >
>
-L/home/fejimush/development/libraries/boost_1_33_1/stage/lib
> > -o"ManagedMakeProject"  ./main.o  
> > -lboost_thread-gcc-mt-d-1_33_1.a
> >
> > I get the follow error:
> >
>
/usr/lib/gcc/i686-pc-linux-gnu/4.1.1/../../../../i686-pc-linux-gnu/bin/ld:
> > cannot find -lboost_thread-gcc-mt-d-1_33_1.a
> >
> > The file is there and everything seems to be
> spelled
> > correctly, path and filename.  
> >
> >   
> 
> If you want that the linker doesn't search the
> library, you dont have to 
> use the -l flag.
> Try linking with this:
> 
> g++ \
> -o"ManagedMakeProject" ./main.o \
>
/home/fejimush/development/libraries/boost_1_33_1/stage/lib/libboost_thread-gcc-mt-d-1_33_1.a
> 
> (Assuming that the file
> libboost_thread-gcc-mt-d-1_33_1.a is in the 
> directory
>
/home/fejimush/development/libraries/boost_1_33_1/stage/lib)
> 
> The -l flag searches first for the dinamic (.so)
> library, and only if it 
> can't find it, it searches for the static version.
> 
> 
> But, returning to your first post, I think that your
> problem doesn't 
> happens at build time, does it?
> When do you get the message "error while loading
> shared libraries"? At 
> link time or at run time?
> 
> If you are sure that the file
>
/home/quirk/dev/libraries/boost_1_33_1/stage/lib/libboost_thread-gcc-mt-d-1_33_1.so
> exists and that the problem is at run time, then try
> this:
> 
> g++
> -L/home/quirk/dev/libraries/boost_1_33_1/stage/lib \
> -o"ManagedMakeProject"  ./main.o  -lpthread \
> -lboost_thread-gcc-mt-d-1_33_1 \
>
-Wl,-rpath,/home/quirk/dev/libraries/boost_1_33_1/stage/lib
> 
> Regards,
> Raul.
> 
> _______________________________________________
> Boost-users mailing list
> Boost-users_at_[hidden]
>
http://lists.boost.org/mailman/listinfo.cgi/boost-users

 
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