[boost] [Test][Thread] Regression since 9 December?

Subject: [boost] [Test][Thread] Regression since 9 December?
From: Vicente J. Botet Escriba (vicente.botet_at_[hidden])
Date: 2015-01-11 04:59:13

Hi,

I'm getting a regression on all the Boost.Thread tests using Boost.Test 
to fail after this commit
https://github.com/boostorg/test/commit/1eaffb96ceec82882a4e947c99735a37271ce303. 
See 
http://www.boost.org/development/tests/develop/developer/output/Sandia-clang-c++11-boost-bin-v2-libs-thread-test-test_2309-test-clang-darwin-4-2-1-debug-threading-multi.html. 

|../../../boost/system/config.hpp:34:3: erreur: #error Must not define both BOOST_SYSTEM_DYN_LINK and BOOST_SYSTEM_STATIC_LINK
  # error Must not define both BOOST_SYSTEM_DYN_LINK and BOOST_SYSTEM_STATIC_LINK
|

When I comment the added lines everything works correctly as before.

The Boost.Thread jamfile contains

|       <library>/boost/test//boost_unit_test_framework/<link>static
|

If I change it to

|       <library>/boost/test//boost_unit_test_framework
|

I get an error

|darwin.link ../../../bin.v2/libs/thread/test/test_thread.test/darwin-4.9.1/debug/threading-multi/test_thread
Undefined symbols for architecture x86_64:
   "_main", referenced from:
       start in crt1.10.6.o
ld: symbol(s) not found for architecture x86_64
collect2: erreur: ld a retourné 1 code d'état d'exécution

     "/usr/gcc-4.9.1/bin/g++-4.9.1"  -o "../../../bin.v2/libs/thread/test/test_thread.test/darwin-4.9.1/debug/threading-multi/test_thread" "../../../bin.v2/libs/thread/test/test_thread.test/darwin-4.9.1/debug/threading-multi/test_thread.o" "../../../bin.v2/libs/thread/test/test_thread.test/darwin-4.9.1/debug/threading-multi/winrt_init.o" "../../../bin.v2/libs/test/build/darwin-4.9.1/debug/threading-multi/libboost_unit_test_framework.dylib" "../../../bin.v2/libs/timer/build/darwin-4.9.1/debug/threading-multi/libboost_timer.dylib" "../../../bin.v2/libs/chrono/build/darwin-4.9.1/debug/threading-multi/libboost_chrono.dylib" "../../../bin.v2/libs/thread/build/darwin-4.9.1/debug/threading-multi/libboost_thread.dylib" "../../../bin.v2/libs/system/build/darwin-4.9.1/debug/threading-multi/libboost_system.dylib"       -g
|

Do others observe the same?

Do you have an idea how this can be fixed?

Best,
Vicente