boost_1_45_0/tools/build/v2/engine/doc/history.qbk

[variablelist

[[3.1.18] [

After years of bjam developments.. This is going to be the last unbundled release of the
3.1.x series. From this point forward bjam will only be bundled as part of the larger
Boost Build system. And hence will likely change name at some point. As a side effect
of this move people will get more frequent release of bjam (or whatever it ends up being
called).

[list
    [li New built-ins, MD5, SPLIT_BY_CHARACTERS, PRECIOUS, PAD, FILE_OPEN, and UPDATE_NOW.
        -- ['Vladimir P.]
        ]
    [li Ensure all file descriptors are closed when executing actions complete on *nix.
        -- ['Noel B.]
        ]
    [li Fix warnings, patch from Mateusz Loskot.
        -- ['Vladimir P.]
        ]
    [li Add KEEP_GOING var to programatically override the '-q' option.
        -- ['Vladimir P.]
        ]
    [li Add more parameters, up to 19 from 9, to rule invocations. Patch from
        Jonathan Biggar.
        -- ['Vladimir P.]
        ]
    [li Print failed command output even if the normally quite '-d0' option.
        -- ['Vladimir P.]
        ]
    [li Build of bjam with vc10, aka Visual Studio 2010.
        -- ['Vladimir P.]
        ]
    [li More macros for detection of OSPLAT, patch from John W. Bito.
        -- ['Vladimir P.]
        ]
    [li Add PARALLELISM var to programatically override the '-j' option.
        -- ['Vladimir P.]
        ]
    [li Tweak doc building to allow for PDF generation of docs.
        -- ['John M.]
        ]
]

]]

[[3.1.17] [

A year in the making this release has many stability improvements and various performance
improvements. And because of the efforts of Jurko the code is considerably more readable!

[list
    [li Reflect the results of calling bjam from Python.
        -- ['Rene R.]
        ]
    [li For building on Windows: Rework how arguments are parsed and tested to fix handling
        of quoted arguments, options arguments, and arguments with "=".
        -- ['Rene R.]
        ]
    [li Try to work around at least one compiler bug with GCC and variable aliasing that
        causes crashes with hashing file cache entries.
        -- ['Rene R.]
        ]
    [li Add -Wc,-fno-strict-aliasing for QCC/QNX to avoid the same aliasing crashes as in
        the general GCC 4.x series (thanks to Niklas Angare for the fix).
        -- ['Rene R.]
        ]
    [li On Windows let the child bjam commands inherit stdin, as some commands assume
        it's available.
        -- ['Rene R.]
        ]
    [li On Windows don't limit bjam output to ASCII as some tools output characters in
        extended character sets.
        -- ['Rene R.]
        ]
    [li Isolate running of bjam tests to individual bjam instances to prevent possible
        spillover errors from one test affecting another test. Separate the bjam used to run
        the tests vs. the bjam being tested. And add automatic re-building of the bjam being
        tested.
        -- ['Rene R.]
        ]
    [li Fix some possible overrun issues revealed by Fortify build. Thanks to Steven Robbins
        for pointing out the issues.
        -- ['Rene R.]
        ]
    [li Handle \\n and \\r escape sequences.
        -- ['Vladimir P.]
        ]
    [li Minor edits to remove -Wall warnings.
        -- ['Rene R.]
        ]
    [li Dynamically adjust pwd buffer query size to allow for when PATH_MAX is default
        defined instead of being provided by the system C library.
        -- ['Rene R.]
        ]
    [li Minor perf improvement for bjam by replacing hash function with faster version. Only
        1% diff for Boost tree.
        -- ['Rene R.]
        ]
    [li Updated Boost Jam's error location reporting when parsing Jamfiles. Now it reports
        the correct error location information when encountering an unexpected EOF. It now
        also reports where an invalid lexical token being read started instead of finished
        which makes it much easier to find errors like unclosed quotes or curly braces.
        -- ['Jurko G.]
        ]
    [li Removed the -xarch=generic architecture from build.jam
        as this option is unknown so the Sun compilers on Linux.
        -- ['Noel B.]
        ]
    [li Fixed a bug with T_FATE_ISTMP getting reported as T_FATE_ISTMP & T_FATE_NEEDTMP at
        the same time due to a missing break in a switch statement.
        -- ['Jurko G.]
        ]
    [li Fixed a Boost Jam bug causing it to sometimes trigger actions depending on targets
        that have not been built yet.
        -- ['Jurko G.]
        ]
    [li Added missing documentation for Boost Jam's :T variable expansion modifier which
        converts all back-slashes ('\\') to forward slashed ('/').
        -- ['Jurko G.]
        ]
    [li Added Boost Jam support for executing command lines longer than 2047 characters (up
        to 8191) characters when running on Windows XP or later OS version.
        -- ['Jurko G.]
        ]
    [li Fixed a Boost Jam bug on Windows causing its SHELL command not to work correctly with
        some commands containing quotes.
        -- ['Jurko G.]
        ]
    [li Corrected a potential memory leak in Boost Jam's builtin_shell() function that would
        appear should Boost Jam ever start to release its allocated string objects.
        -- ['Jurko G.]
        ]
    [li Made all Boost Jam's ECHO commands automatically flush the standard output to make
        that output more promptly displayed to the user.
        -- ['Jurko G.]
        ]
    [li Made Boost Jam tests quote their bjam executable name when calling it allowing those
        executables to contain spaces in their name and/or path.
        -- ['Jurko G.]
        ]
    [li Change execunix.c to always use fork() instead of
        vfork() on the Mac.  This works around known issues
        with bjam on PPC under Tiger and a problem reported
        by Rene with bjam on x86 under Leopard.
        -- ['Noel B.]
        ]
    [li Corrected a bug in Boost Jam's base Jambase script causing it to trim the error
        message displayed when its boost-build rule gets called multiple times.
        -- ['Jurko G.]
        ]
    [li When importing from Python into an module with empty string as name,
        import into root module.
        -- ['Vladimir P.]
        ]
    [li Patch for the NORMALIZE_PATH builtin Boost Jam rule as well as an appropriate update
        for the path.jam Boost Build module where that rule was being used to implement path
        join and related operations.
        -- ['Jurko G.]
        ]
    [li Fixed a bug causing Boost Jam not to handle target file names specified as both short
        and long file names correctly.
        -- ['Jurko G.]
        ]
    [li Relaxed test, ignoring case of drive letter.
        -- ['Roland S.]
        ]
    [li Implemented a patch contributed by Igor Nazarenko reimplementing the list_sort()
        function to use a C qsort() function instead of a hand-crafted merge-sort algorithm.
        Makes some list sortings (e.g. 1,2,1,2,1,2,1,2, \.\.\.) extremely faster, in turn
        significantly speeding up some project builds.
        -- ['Jurko G.]
        ]
    [li Fixed a bug with bjam not handling the '\' root Windows path correctly without its
        drive letter being specified.
        -- ['Jurko G.]
        ]
    [li Solved the problem with child process returning the value 259 (Windows constant
        STILL_ACTIVE) causing bjam never to detect that it exited and therefore keep running
        in an endless loop.
        -- ['Jurko G.]
        ]
    [li 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.
        -- ['Jurko G.]
        ]
    [li 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.
        -- ['Jurko G.]
        ]
    [li Change from vfork to fork for executing actions on Darwin to improve stability.
        -- ['Noel B.]
        ]
    [li Code reformatting and cleanups.
        -- ['Jurko G.]
        ]
    [li Implement ISFILE built-in.
        -- ['Vladimir P.]
        ]
]

]]

[[3.1.16] [

This is mostly a bug fix release.

[list
    [li Work around some Windows CMD.EXE programs that will fail executing a totally
        empty batch file.
        -- ['Rene R.]
        ]
    [li Add support for detection and building with =vc9=.
        -- ['John P.]
        ]
    [li Plug memory leak when closing out actions. Thanks to Martin Kortmann for finding this.
        -- ['Rene R.]
        ]
    [li Various improvements to =__TIMING_RULE__= and =__ACTION_RULE__= target variable
        hooks.
        -- ['Rene R.]
        ]
    [li Change [^JAMDATE] to use common ISO date format.
        -- ['Rene R.]
        ]
    [li Add test for result status values of simple actions, i.e. empty actions.
        -- ['Rene R.]
        ]
    [li Fix buffer overrun bug in expanding [^@()] subexpressions.
        -- ['Rene R.]
        ]
    [li Check empty string invariants, instead of assuming all strings are allocated.
        And reset strings when they are freed.
        -- ['Rene R.]
        ]
    [li Add [^OSPLAT=PARISC] for HP-UX PA-RISC.
        -- ['Boris G.]
        ]
    [li Make quietly actions really quiet by not printing the command output. The
        output for the quietly actions is still available through =__ACTION_RULE__=.
        -- ['Rene R.]
        ]
    [li Switch intel-win32 to use static multi thread runtime since the single
        thread static runtime is no longer available.
        -- ['Rene R.]
        ]
    [li When setting =OSPLAT=, check =__ia64= macro.
        -- ['Boris G.]
        ]
    [li Get the unix timing working correctly.
        -- ['Noel B.]
        ]
    [li Add =-fno-strict-aliasing= to compilation with gcc. Which works around
        GCC-4.2 crash problems.
        -- ['Boris G.]
        ]
    [li Increased support for Python integration.
        -- ['Vladimir P.], ['Daniel W.]
        ]
    [li Allow specifying options with quotes, i.e. [^--with-python=xyz], to work
        around the CMD shell using [^=] as an argument separator.
        -- ['Rene R.]
        ]
    [li Add values of variables specified with -s to .EVNRION
        module, so that we can override environment on
        command line.
        -- ['Vladimir P.]
        ]
    [li Make NORMALIZE_PATH convert \\ to /.
        -- ['Vladimir P.]
        ]
]

]]

[[3.1.15] [

This release sees a variety of fixes for long standing Perforce/Jam problems. Most of
them relating to running actions in parallel with the -jN option. The end result of the
changes is that running parallel actions is now reliably possible in Unix and Windows
environments. Many thanks to Noel for joining the effort, to implement and fix the Unix
side of stuff.

[list
    [li Add support for building bjam with pgi and pathscale toolsets.
        -- ['Noel B.]
        ]
    [li Implement running action commands through pipes (-p option) to fix jumbled
        output when using parallel execution with -j option. This is implemented
        for Unix variants, and Windows (Win32/NT).
        -- ['Rene R.], ['Noel B.]
        ]
    [li Add "sun" as alias to Sun Workshop compiler tools.
        -- ['Rene R.]
        ]
    [li Set MAXLINE in jam.h to 23k bytes for AIX.  The piecemeal archive action
        was broken with the default MAXLINE of 102400.  Because the AIX shell uses
        some of the 24k default buffer size for its own use, I reduced it to 23k.
        -- ['Noel B.]
        ]
    [li Make use of output dir options of msvc to not polute src dir with compiled files.
        -- ['Rene R.]
        ]
    [li A small fix, so -d+2 will always show the "real" commands being executed
        instead of casually the name of a temporary batch file.
        -- ['Roland S.]
        ]
    [li Add test to check 'bjam -n'.
        -- ['Rene R.]
        ]
    [li Add test to check 'bjam -d2'.
        -- ['Rene R.]
        ]
    [li Bring back missing output of -n option. The -o option continues to be
        broken as it has been for a long time now because of the @ file feature.
        -- ['Rene R.]
        ]
    [li Update GC support to work with Boehm GC 7.0.
        -- ['Rene R.]
        ]
    [li Revert the BOOST_BUILD_PATH change, since the directory passed to
        boost-build should be first in searched paths, else project local
        build system will not be picked correctly. The order had been changed to
        allow searching of alternate user-config.jam files from boost build. This
        better should be done with --user-config= switch or similar. 
        -- ['Roland S.]
        ]
    [li Initial support for defining action body from Python.
        -- ['Vladimir P.]
        ]
    [li Implement @() expansion during parse phase.
        -- ['Rene R.]
        ]
    [li Define OSPLAT var unconditionally, and more generically, when possible.
        -- ['Rene R.]
        ]
    [li Fix undeclared INT_MAX on some platforms, i.e. Linux.
        -- ['Rene R.]
        ]
    [li Modified execunix.c to add support for terminating
        processes that consume too much cpu or that hang and
        fail to consume cpu at all.  This in support of the
        bjam -lx option.
        -- ['Noel B.]
        ]
    [li Add internal dependencies for multi-file generating actions to indicate
        that the targets all only appear when the first target appears. This fixes
        the long standing problem Perforce/Jam has with multi-file actions and
        parallel execution (-jN).
        -- ['Rene R.]
        ]
    [li Add test of -l limit option now that it's implemented on windows and unix.
        -- ['Rene R.]
        ]
    [li Add test for no-op @() expansion.
        -- ['Rene R.]
        ]
    [li Handle invalid formats of @() as doing a straight substitution instead of
        erroring out.
        -- ['Rene R.]
        ]
    [li Various fixes to compile on SGI/Irix.
        -- ['Noel B.]
        ]
    [li Add output for when actions timeout with -lN option.
        -- ['Rene R.], ['Noel B.]
        ]
    [li Add needed include (according to XOPEN) for definition of WIFEXITED and WEXITSTATUS.
        -- ['Markus S.]
        ]
]

]]

]