dev-libs/boost-1.35.0-r1 pre-strips all libraries and executables. Among other things, this makes it impossible to build a (usable) splitdebug boost. # emerge boost [...] * QA Notice: Pre-stripped files found: * /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_serialization.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_wserialization.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_signals.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_prg_exec_monitor.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_unit_test_framework.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_thread-mt.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_wave.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_date_time.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_system.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_filesystem.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_graph.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_iostreams.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_program_options.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_python.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_random.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_regex.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_date_time-mt.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_system-mt.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_filesystem-mt.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_graph-mt.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_iostreams-mt.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_program_options-mt.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_python-mt.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_random-mt.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_regex-mt.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_serialization-mt.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_wserialization-mt.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_signals-mt.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_prg_exec_monitor-mt.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_unit_test_framework-mt.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/lib64/libboost_wave-mt.so /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/bin/bcp /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/bin/compiler_status /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/bin/inspect /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/bin/library_status /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/bin/process_jam_log /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/bin/quickbook /var/tmp/portage/dev-libs/boost-1.35.0-r1/image/usr/bin/wave
Fixed without rev.bump, thanks!