This was caused by the file_dirscan() function in the filent.c module not working correctly when passed '\' as its dir. It then messed up when formatting its file-selection parameter for the _findfirst()/findfirst() API and constructed it as '\/*' which caused that API to fail and return -1 which was in turn being interpreted as 'file not found'.
[SVN r44088]
Solved the problem with bjam going into an active wait state, hogging up processor resources, when waiting for one of its child processes to terminate while not all of its available child process slots are being used. To see this bug in action, try compiling a simple C++ program on a 2 processor PC with the -j 2 command-line option and watching how much processor resources bjam uses while linking. Was caused by treating unused process slots as used in the try_wait() function, causing the WaitForMultipleObjects() Windows API call to exit instantly with an error which was then getting incorrectly interpreted as a timeout, starting the whole cycle anew.
Solved a race condition between bjam's output reading/child process termination detection and the child process's output generation/termination which could have caused bjam not to collect the terminated process's final output.
Extracted all GetExitCodeProcess() API calls into one location so it no longer gets called in three separate places.
Minor comment changes in code touched by previous fixes.
[SVN r44087]
This fixes PCH not being rebuild when some other headers
included from HPP being compiled change.
Thanks to Pierre-Luc Neron for the bug report.
[SVN r43527]
action to fix this linker error when linking dylibs:
ld: common symbols not allowed with MH_DYLIB output format with the -multi_module option
boost/bin.v2/libs/system/build/intel-darwin-9.1/debug/macosx-version-10.4/error_code.o
definition of common __ZGVZNK5boost6system14error_category7messageEiE1s (size 16)
boost/bin.v2/libs/system/build/intel-darwin-9.1/debug/macosx-version-10.4/error_code.o
definition of common __ZZNK5boost6system14error_category7messageEiE1s (size 16)
though I would note that the common symbols problem occurs in a number of
other libraries (test, graph, spirit, ...) as well.
[SVN r43179]
requires both the parent and child process to explicitly set
the process group id. Vfork guarantees the child process
runs to the exec before it releases the parent process.
Now that we use fork instead of vfork, it's possible for the
parent to wait on the child process without having the child
setpgid on itself. This eliminates spurious hangs on ppc
darwin caused by either a race condition between vfork and
execvp, or a bug in the vfork implementation.
Added a test to ensure we don't try to read from the
stderr pipe descriptor if the descriptor's not valid.
[SVN r43176]
to use -dynamiclib and -install_name, as done in darwin.jam.
Apparently the Intel compilers on the Mac support the same
options as gcc for setting the internal dynamic library name.
[SVN r42960]
