Hi,
made right now a git pull, got the error below. About 14 hours ago,
three
changes earlier, it worked on the same machine and system.
Any ideas? 
Ralph.
[ 1%] Built target volk
[ 1%] Built target test_all
[ 1%] Built target volk_profile
[ 1%] Built target doxygen_target
[ 1%] Built target gruel
[ 1%] Built target test_gruel
[ 1%] Built target pmt_generated
[ 1%] Built target _pmt_swig_doc_tag
[ 1%] Built target pmt_swig_swig_doc
[ 1%] Built target _pmt_swig_swig_tag
[ 2%] Built target _pmt_swig
[ 2%] Built target pygen_gruel_src_swig_d3dd0
[ 3%] Built target pygen_gruel_src_python_16d2a
[ 3%] Built target pygen_gruel_src_python_f240f
[ 3%] Building CXX object gnuradio-core/src/lib/CMakeFiles/gnuradio-
core.dir/general/gr_prefs.cc.o
/home/ras/gnuradio/gnuradio-core/src/lib/general/gr_prefs.cc: In member
function ‘virtual std::vector<std::basic_string >
gr_prefs::_sys_prefs_filenames()’:
/home/ras/gnuradio/gnuradio-core/src/lib/general/gr_prefs.cc:87:3:
error:
‘cerr’ is not a member of ‘std’
make[2]: *** [gnuradio-core/src/lib/CMakeFiles/gnuradio-
core.dir/general/gr_prefs.cc.o] Error 1
make[1]: *** [gnuradio-core/src/lib/CMakeFiles/gnuradio-core.dir/all]
Error 2
make: *** [all] Error 2