[boost] building of boost 1.33.1 - elf, serialization lib, and some misc warnings in thread & wave libs

From: Manfred Doudar (manfred.doudar_at_[hidden])
Date: 2006-01-18 02:59:07

All:

There are some concerning (?) messages when building Boost 
Serialization, and other seemingly trivial warnings for Boost Threads, 
and Boost Wave that ought to be cleaned up.

I apologize for the noise if this has been reported before, but I've 
been away from this NG for a while, given that I've moved house, and 
state, and job in the last few weeks.

Miscellany:
----------

Building Boost 1.33.1 with gcc-3.3.5, on Debian 1:3.3.5-12, on a 2.6 Kernal.

Being a luddite when it comes to the internals of elf formats, I get odd 
messages try to build Boost when it gets to the the Serialization 
Library - hopefully someone can interpret them for me:

Boost.Serialization
-------------------

gcc-C++-action
bin/boost/libs/serialization/build/libboost_serialization.so/gcc/debug/shared-linkable-true/xml_oarchive.o
gcc-Link-action
bin/boost/libs/serialization/build/libboost_serialization.so/gcc/debug/shared-linkable-true/libboost_serialization-gcc-d-1_33_1.so
/usr/bin/ld: `.L549' referenced in section `.rodata' of
bin/boost/libs/serialization/build/libboost_serialization.so/gcc/debug/shared-linkable-true/basic_oarchive.o:
defined in discarded section
`.gnu.linkonce.t._ZNK5boost7archive17archive_exception4whatEv' of
bin/boost/libs/serialization/build/libboost_serialization.so/gcc/debug/shared-linkable-true/basic_oarchive.o

/usr/bin/ld: `.L559' referenced in section `.rodata' of
bin/boost/libs/serialization/build/libboost_serialization.so/gcc/debug/shared-linkable-true/basic_oarchive.o:
defined in discarded section
`.gnu.linkonce.t._ZNK5boost7archive17archive_exception4whatEv' of
bin/boost/libs/serialization/build/libboost_serialization.so/gcc/debug/shared-linkable-true/basic_oarchive.o

Similarly for :

basic_oarchive.o
basic_text_iprimitive.o
basic_text_oprimitive.o
binary_iarchive.o
binary_oarchive.o
text_iarchive.o
text_oarchive.o
xml_grammar.o
xml_iarchive.o
xml_oarchive.o

and the same (with some variation) for release paths:

gcc-C++-action
bin/boost/libs/serialization/build/libboost_wserialization.so/gcc/release/shared-linkable-true/threading-multi/xml_woarchive.o
gcc-Link-action
bin/boost/libs/serialization/build/libboost_wserialization.so/gcc/release/shared-linkable-true/threading-multi/libboost_wserialization-gcc-mt-1_33_1.so
/usr/bin/ld: `.L1456' referenced in section `.rodata' of
bin/boost/libs/serialization/build/libboost_wserialization.so/gcc/release/shared-linkable-true/threading-multi/basic_text_woprimitive.o:
defined in discarded section
`.gnu.linkonce.t._ZNK5boost7archive17archive_exception4whatEv' of
bin/boost/libs/serialization/build/libboost_wserialization.so/gcc/release/shared-linkable-true/threading-multi/basic_text_woprimitive.o

/usr/bin/ld: `.L1466' referenced in section `.rodata' of
bin/boost/libs/serialization/build/libboost_wserialization.so/gcc/release/shared-linkable-true/threading-multi/basic_text_woprimitive.o:
defined in discarded section
`.gnu.linkonce.t._ZNK5boost7archive17archive_exception4whatEv' of
bin/boost/libs/serialization/build/libboost_wserialization.so/gcc/release/shared-linkable-true/threading-multi/basic_text_woprimitive.o

/usr/bin/ld: `.L1457' referenced in section `.rodata' of
bin/boost/libs/serialization/build/libboost_wserialization.so/gcc/release/shared-linkable-true/threading-multi/basic_text_woprimitive.o:
defined in discarded section
`.gnu.linkonce.t._ZNK5boost7archive17archive_exception4whatEv' of
bin/boost/libs/serialization/build/libboost_wserialization.so/gcc/release/shared-linkable-true/threading-multi/basic_text_woprimitive.o

... you get the idea.

All I can fathom is that some symbols are referenced in read-only-data 
sections - that aren't ever going to be read.

Building with gcc-3.3.5, on Debian 1:3.3.5-12, on a 2.6 Kernal.

Any ideas as to why I get the above would be appreciated - I know Robert 
went to great lengths to ensure backward compatibility with older 
compilers for the Serialization lib, so I'm guessing it's some issue 
with my current system setup, who knows ?

That aside, there's a warning that might otherwise be cleaned up (if not 
already done so), about unused variables:

Boost.Threads:
--------------

/home/users/manfredd/MyDownloads/boost_1_33_1/libs/thread/src/recursive_mutex.cpp: 
In
    member function `boost::recursive_mutex::recursive_mutex()':
/home/users/manfredd/MyDownloads/boost_1_33_1/libs/thread/src/recursive_mutex.cpp:299: 
warning: unused
    variable `int res'
/home/users/manfredd/MyDownloads/boost_1_33_1/libs/thread/src/recursive_mutex.cpp: 
In
    member function `boost::recursive_try_mutex::recursive_try_mutex()':
/home/users/manfredd/MyDownloads/boost_1_33_1/libs/thread/src/recursive_mutex.cpp:455: 
warning: unused
    variable `int res'

Boost.Wave
----------

gcc-C++-action 
bin/boost/libs/wave/build/libboost_wave.a/gcc/release/cpp_re.o
cpp.re: In function `boost::wave::token_id
 
boost::wave::cpplexer::re2clex::scan(boost::wave::cpplexer::re2clex::Scanner*)
    ':
cpp_re.cpp:407: warning: `unsigned int yyaccept' might be used 
uninitialized in
    this function

Thanks in advance,
-- 
Manfred Doudar - Research Engineer
National ICT Australia (NICTA)
Research School of Information Sciences and Engineering (RSISE)
The Australian National University - Canberra, ACT 0200 AUSTRALIA