Hello, Thank you for your great software! While building gr-osmosdr yesterday and the day before, I have been getting this new error while compiling. The compiler is gcc 4.7 under Os X 10.5.8 I'm also having unexplained crashes.. Applications that use the library are having issues. Here is the complete message. It occurs twice, Linking CXX shared library libgnuradio-osmosdr.dylib cd /Volumes/xyz/builds/osmocom/gr-osmosdr/build/lib && "/Applications/CMake 2.8-7.app/Contents/bin/cmake" -E cmake_link_script CMakeFiles/gnuradio-osmosdr.dir/link.txt --verbose=1 /opt/local/bin/i386-apple-darwin9-g++-mp-4.7 -O3 -DNDEBUG -arch i386 -isysroot /Developer/SDKs/MacOSX10.5.sdk -mmacosx-version-min=10.5 -dynamiclib -Wl,-headerpad_max_install_names -compatibility_version 0.0.1 -o libgnuradio-osmosdr.0.0.1git.dylib -install_name /Volumes/xyz/builds/osmocom/gr-osmosdr/build/lib/libgnuradio-osmosdr.0.0.1git.dylib CMakeFiles/gnuradio-osmosdr.dir/osmosdr_source_c_impl.cc.o CMakeFiles/gnuradio-osmosdr.dir/osmosdr_sink_c_impl.cc.o CMakeFiles/gnuradio-osmosdr.dir/osmosdr_ranges.cc.o CMakeFiles/gnuradio-osmosdr.dir/osmosdr_device.cc.o CMakeFiles/gnuradio-osmosdr.dir/file/file_source_c.cc.o CMakeFiles/gnuradio-osmosdr.dir/rtl/rtl_source_c.cc.o CMakeFiles/gnuradio-osmosdr.dir/rtl_tcp/rtl_tcp_source_f.cc.o CMakeFiles/gnuradio-osmosdr.dir/rtl_tcp/rtl_tcp_source_c.cc.o -L/opt/local/lib /opt/local/lib/libboost_thread-mt.dylib /opt/local/lib/libboost_system-mt.dylib /opt/local/lib/libgruel.dylib /opt/local/lib/libgnuradio-core.dylib /opt/local/lib/libgnuradio-core.dylib /opt/local/lib/librtlsdr.dylib /opt/local/lib/libgnuradio-core.dylib /opt/local/lib/librtlsdr.dylib ld: warning: could not create compact unwind for rtl_source_c::rtl_source_c(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&): stack subq instruction is too different from dwarf stack size ld: warning: could not create compact unwind for rtl_source_c::rtl_source_c(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&): stack subq instruction is too different from dwarf stack size ..... Then a few lines down, it happens a second time.. Linking CXX shared module _osmosdr_swig.so cd /Volumes/xyz/builds/osmocom/gr-osmosdr/build/swig && "/Applications/CMake 2.8-7.app/Contents/bin/cmake" -E cmake_link_script CMakeFiles/_osmosdr_swig.dir/link.txt --verbose=1 /opt/local/bin/i386-apple-darwin9-g++-mp-4.7 -O3 -DNDEBUG -arch i386 -isysroot /Developer/SDKs/MacOSX10.5.sdk -mmacosx-version-min=10.5 -bundle -Wl,-headerpad_max_install_names -o _osmosdr_swig.so CMakeFiles/_osmosdr_swig.dir/osmosdr_swigPYTHON_wrap.cxx.o -L/opt/local/lib /opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/libpython2.7.dylib ../lib/libgnuradio-osmosdr.0.0.1git.dylib /opt/local/lib/libboost_thread-mt.dylib /opt/local/lib/libboost_system-mt.dylib /opt/local/lib/libgruel.dylib /opt/local/lib/libgnuradio-core.dylib /opt/local/lib/librtlsdr.dylib /opt/local/lib/libgnuradio-core.dylib /opt/local/lib/librtlsdr.dylib ld: warning: could not create compact unwind for swig::SwigPySequence_Ref<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >::operator std::basic_string<char, std::char_traits<char>, std::allocator<char> size ld: warning: could not create compact unwind for swig::SwigPySequence_Ref<osmosdr::device_t>::operator osmosdr::device_t() const: stack subq instruction is too different from dwarf stack size ld: warning: could not create compact unwind for swig::SwigPySequence_Ref<std::pair<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > size ld: warning: could not create compact unwind for swig::SwigPySequence_Ref<osmosdr::range_t>::operator osmosdr::range_t() const: stack subq instruction is too different from dwarf stack size ???