Hello, I haven't been able to find an answer in the archives. I had no problems building boost using bjam for the darwin (gcc) toolset, but have had no luck with CodeWarrior. I posted to the jamboost list, but received no response, so I'm hoping this is the right list! I have: CW 9.2 OS X 10.3.5 boost_1_31_0 boost-build boost-jam-3.1.10-1-macosxppc When I call bjam from the command line, both cwpro9 and cw toolsets (cw-tools.jam downloaded from CVS) result in the same errors: all the codewarrior jam files use -warn when the option should be -warnings, and there is no keyword "nounusedexpr". I edited one of the jam files to change -warn to -warnings and commented out nounusedexpr, but then greg_month.o doesn't get built and subsequently none of the libraries: Error : Nothing to do: no source or object files specified Then I tried a suggestion I saw in the archives - created an empty project for a static library in CodeWarrior and added the files in /boost_1_31_0/libs/regex/src/. This worked fine for the regex library (had to add the boost_1_31_0 path to the access paths in the project settings), but I am getting errors when I do the same for the filesystem library: Error : undefined identifier 'ETXTBSY' exception.cpp line 126 { ETXTBSY, fs::busy_error }, Error : undefined identifier 'lstat' operations_posix_windows.cpp line 318 return ::lstat( ph.native_file_string().c_str( Error : undefined identifier 'S_ISLNK' operations_posix_windows.cpp line 319 && S_ISLNK( path_stat.st_mode ); Error : undefined identifier 'ssize_t' operations_posix_windows.cpp line 489 ssize_t sz; Error : undefined identifier 'sz' operations_posix_windows.cpp line 490 while ( (sz = ::read( infile, buf.get(), bu Error : undefined identifier 'sz' operations_posix_windows.cpp line 491 && (sz = ::write( outfile, buf.get(), Error : undefined identifier 'sz' operations_posix_windows.cpp line 496 if ( sz != 0 ) Error : undefined identifier 'pathconf' operations_posix_windows.cpp line 509 long path_max = ::pathconf( ".", _PC_PATH_MAX ); Is there something else I need to include or define? Thanks a lot! Jane