Hello, I'm trying to build Boost.Test from SVN trunk. Linking the dynamic libraries fails with gcc 4.0 on OSX. Apparently, the option -h is passed to the linker. Not sure what that means. The complete bjam output follows. Daniel Walker $ echo $OSTYPE darwin9.0 $ gcc --version i686-apple-darwin9-gcc-4.0.1 (GCC) 4.0.1 (Apple Inc. build 5488) Copyright (C) 2005 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. $ bjam --version Boost.Build V2 (Milestone 12) Boost.Jam 03.1.16 $ svn update At revision 49428. $ bjam --toolset=gcc --with-test ...patience... ...found 659 targets... ...updating 2 targets... gcc.link.dll bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/libboost_prg_exec_monitor-gcc40-mt-1_37.dylib ld: unknown option: -h collect2: ld returned 1 exit status "g++" -o "bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/libboost_prg_exec_monitor-gcc40-mt-1_37.dylib" -Wl,-h -Wl,libboost_prg_exec_monitor-gcc40-mt-1_37.dylib -shared -Wl,--start-group "bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/execution_monitor.o" "bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/debug.o" "bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/cpp_main.o" -Wl,-Bstatic -Wl,-Bdynamic -Wl,--end-group -Wl,--strip-all ...failed gcc.link.dll bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/libboost_prg_exec_monitor-gcc40-mt-1_37.dylib... gcc.link.dll bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/libboost_unit_test_framework-gcc40-mt-1_37.dylib ld: unknown option: -h collect2: ld returned 1 exit status "g++" -o "bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/libboost_unit_test_framework-gcc40-mt-1_37.dylib" -Wl,-h -Wl,libboost_unit_test_framework-gcc40-mt-1_37.dylib -shared -Wl,--start-group "bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/execution_monitor.o" "bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/debug.o" "bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/compiler_log_formatter.o" "bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/framework.o" "bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/plain_report_formatter.o" "bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/progress_monitor.o" "bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/results_collector.o" "bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/results_reporter.o" "bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/test_tools.o" "bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/unit_test_log.o" "bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/unit_test_main.o" "bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/unit_test_monitor.o" "bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/unit_test_parameters.o" "bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/unit_test_suite.o" "bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/xml_log_formatter.o" "bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/xml_report_formatter.o" "bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/exception_safety.o" "bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/interaction_based.o" "bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/logged_expectations.o" -Wl,-Bstatic -Wl,-Bdynamic -Wl,--end-group -Wl,--strip-all ...failed gcc.link.dll bin.v2/libs/test/build/gcc-4.0.1/release/threading-multi/libboost_unit_test_framework-gcc40-mt-1_37.dylib... ...failed updating 2 targets... $