Re: [Boost-users] Cross-Compile Boost for Embedded Linux

Subject: Re: [Boost-users] Cross-Compile Boost for Embedded Linux
From: Vladimir Prus (vladimir_at_[hidden])
Date: 2008-09-17 15:10:01

Richard Ketcham wrote:

> Oh, I'm sorry about that. It's changed now. This is what I'm getting now:
> 
> rich_at_rich-desktop:~/boost_1_36_0/libs/thread/example$ bjam --toolset=gcc-arm
> warning: Graph library does not contain optional GraphML reader.
> note: to enable GraphML support, set EXPAT_INCLUDE and EXPAT_LIBPATH to the
> note: directories containing the Expat headers and libraries, respectively.
> warning: skipping optional Message Passing Interface (MPI) library.
> note: to enable MPI support, add "using mpi ;" to user-config.jam.
> note: to suppress this message, pass "--without-mpi" to bjam.
> note: otherwise, you can safely ignore this message.
> Building Boost.Regex with the optional Unicode/ICU support disabled.
> Please refer to the Boost.Regex documentation for more information
> (don't panic: this is a strictly optional feature).
> ...patience...
> ...found 764 targets...
> ...updating 11 targets...
> gcc.link
> ../../../bin.v2/libs/thread/example/gcc-arm/debug/threading-multi/monitor
> ../../../bin.v2/libs/thread/build/gcc-arm/debug/threading-multi/libboost_thread-gcc-mt-d-1_36.so.1.36.0:
> undefined reference to `get_nprocs'
> ../../../bin.v2/libs/thread/build/gcc-arm/debug/threading-multi/libboost_thread-gcc-mt-d-1_36.so.1.36.0:
> undefined reference to `__sync_add_and_fetch_4'
> collect2: ld returned 1 exit status
> 
> The linking continues to fail with the same two errors.

The second error is caused by shared_ptr using gcc atomic intrinsics that are not actually
supported on ARM. This was discussed before on boost mailing lists, the workaround is
some define making shared_ptr use pthread's mutexes -- google will tell for sure.
I don't know anything about the first error.

- Volodya