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diff --git a/NEWS.txt b/NEWS.txt new file mode 100644 index 0000000..febf44e --- /dev/null +++ b/NEWS.txt @@ -0,0 +1,407 @@ +ccache news +=========== + + +ccache 3.1.6 +------------ +Release date: 2011-08-21 + + +New features and improvements +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + - Rewrite argument to --sysroot if CCACHE_BASEDIR is used. + + +Bug fixes +~~~~~~~~~ + + - Don't crash if getcwd() fails. + - Fixed alignment of "called for preprocessing" counter. + + +ccache 3.1.5 +------------ +Release date: 2011-05-29 + + +New features and improvements +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + - Added a new statistics counter named ``called for preprocessing''. + - The original command line is now logged to the file specified with + `CCACHE_LOGFILE`. + - Improved error logging when system calls fail. + - Added support for rewriting absolute paths in `-F`/`-iframework` GCC + options. + - Improved order of statistics counters in `ccache -s` output. + + +Bug fixes +~~~~~~~~~ + + - The `-MF`/`-MT`/`-MQ` options with concatenated argument are now handled + correctly when they are last on the command line. + - ccache is now bug compatible with GCC for the `-MT`/`-MQ` options with + concatenated arguments. + - Fixed a minor memory leak. + - Systems that lack (and don't need to be linked with) libm are now + supported. + + +ccache 3.1.4 +------------ +Release date: 2011-01-09 + + +Bug fixes +~~~~~~~~~ + + - Made a work-around for a bug in gzputc() in zlib 1.2.5. + + - Corrupt manifest files are now removed so that they won't block direct + mode hits. + + - ccache now copes with file systems that don't know about symbolic links. + + - The file handle in now correctly closed on write error when trying to + create a cache dir tag. + + +ccache 3.1.3 +------------ +Release date: 2010-11-28 + + +Bug fixes +~~~~~~~~~ + + - The -MFarg, -MTarg and -MQarg compiler options (i.e, without space + between option and argument) are now handled correctly. + + +Other +~~~~~ + + - Portability fixes for HP-UX 11.00 and other esoteric systems. + + +ccache 3.1.2 +------------ +Release date: 2010-11-21 + + +Bug fixes +~~~~~~~~~ + + - Bail out on too hard compiler options `-fdump-*`. + + - NULL return values from malloc/calloc of zero bytes are now handled + correctly. + + - Fixed issue when parsing precompiler output on AIX. + + +Other +~~~~~ + + - Improved documentation on which information is included in the hash sum. + + - Made the ``too new header file'' test case work on file systems with + unsynchronized clocks. + + - The test suite now also works on systems that lack a /dev/zero. + + +ccache 3.1.1 +------------ +Release date: 2010-11-07 + + +Bug fixes +~~~~~~~~~ + + - ccache now falls back to preprocessor mode when a non-regular include + file (device, socket, etc) has been detected so that potential hanging + due to blocking reads is avoided. + + - CRC errors are now detected when decompressing compressed files in the + cache. + + - Fixed potential object file corruption race on NFS. + + - Minor documentation corrections. + + - Fixed configure detection of ar. + + - ccache development version (set by dev.mk) now works with gits whose + `describe` command doesn't understand `--dirty`. + + +Other +~~~~~ + + - Minor debug log message improvements. + + +ccache 3.1 +---------- +Release date: 2010-09-16 + +New features and improvements +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + - Added support for hashing the output of a custom command (e.g. + `%compiler% --version`) to identify the compiler instead of stat-ing or + hashing the compiler binary. This can improve robustness when the + compiler (as seen by ccache) actually isn't the real compiler but another + compiler wrapper. + + - Added support for caching compilations that use precompiled headers. (See + the manual for important instructions regarding this.) + + - Locking of the files containing statistics counters is now done using + symlinks instead of POSIX locks. This should make ccache behave a lot + better on file systems where POSIX locks are slow or broken (e.g. NFS on + some systems). + + - Manifest files are now updated without the need of taking locks. + + - Updates of statistics counters are now always done in one of the + sub-level statistics files. This reduces lock contention, which + especially improves performance on slow NFS mounts. + + - Reading and writing of statistics counters has been made + forward-compatible (unknown counters are retained). + + - Files are now read without using mmap(). This has two benefits: it's more + robust against file changes during reading and it improves performance on + poor systems where mmap() doesn't use the disk cache. + + - Added `.cp` and `.CP` as known C++ suffixes. + + - Improved logging. + + - Added `-install_name` as an option known to take an argument. (This + improves statistics when using the Darwin linker.) + + +Bug fixes +~~~~~~~~~ + + - Non-fatal error messages are now never printed to stderr but logged + instead. + + - Fixed a bug affecting failing commands when `--ccache-skip` is used. + + - Made `--ccache-skip` work for all options. + + - EINTR is now handled correctly. + + +Other +~~~~~ + + - Work on porting ccache to win32 (native), mostly done by Ramiro Polla. + The port is not yet finished, but will hopefully be complete in some + subsequent release. + + - Added a `--nostats` flag to the performance benchmark program. + + - Made the performance benchmark program more accurate when measuring cache + hits. + + - Added a new test framework for unit tests written in C. + + - Got rid of `configure-dev`; dev mode is now given by `dev.mk.in` + presence. + + - Improved documentation on how to combine ccache with other compiler + wrappers (like `distcc`). + + - New `LICENSE.txt` file with licensing and copyright details about bundled + source code. + + - New `AUTHORS.txt` file with a list of ccache contributors. + + - New `HACKING.txt` file with some notes about ccache code conventions. + + +ccache 3.0.1 +------------ +Release date: 2010-07-15 + +Bug fixes +~~~~~~~~~ + + - The statistics counter ``called for link'' is now correctly updated when + linking with a single object file. + - Fixed a problem with out-of-source builds. + + +ccache 3.0 +---------- +Release date: 2010-06-20 + +General +~~~~~~~ + + - ccache is now licensed under the GNU General Public License (GPL) version + 3 or later. + + +Upgrade notes +~~~~~~~~~~~~~ + + - The way the hashes are calculated has changed, so you won't get cache + hits for compilation results stored by older ccache versions. Because of + this, you might as well clear the old cache directory with `ccache + --clear` if you want, unless you plan to keep using an older ccache + version. + + +New features and improvements +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + + - ccache now has a ``direct mode'' where it computes a hash of the source + code (including all included files) and compiler options without + running the preprocessor. By not running the preprocessor, CPU usage is + reduced; the speed is somewhere between 1 and 5 times that of ccache + running in traditional mode, depending on the circumstances. The speedup + will be higher when I/O is fast (e.g., when files are in the disk cache). + The direct mode can be disabled by setting +CCACHE_NODIRECT+. + + - Support has been added for rewriting absolute paths to relative paths + when hashing, in order to increase cache hit rate when building the same + source code in different directories even when compiling with `-g` and + when using absolute include directory paths. This is done by setting the + `CCACHE_BASEDIR` environment variable to an absolute path that specifies + which paths to rewrite. + + - Object files are now optionally stored compressed in the cache. The + runtime cost is negligible, and more files will fit in the ccache + directory and in the disk cache. Set `CCACHE_COMPRESS` to enable object + file compression. Note that you can't use compression in combination with + the hard link feature. + + - A `CCACHE_COMPILERCHECK` option has been added. This option tells ccache + what compiler-identifying information to hash to ensure that results + retrieved from the cache are accurate. Possible values are: none (don't + hash anything), mtime (hash the compiler's mtime and size) and content + (hash the content of the compiler binary). The default is mtime. + + - It is now possible to specify extra files whose contents should be + included in the hash sum by setting the `CCACHE_EXTRAFILES` option. + + - Added support for Objective-C and Objective-C\+\+. The statistics counter + ``not a C/C++ file'' has been renamed to ``unsupported source language''. + + - Added support for the `-x` compiler option. + + - Added support for long command-line options. + + - A `CACHEDIR.TAG` file is now created in the cache directory. See + <http://www.brynosaurus.com/cachedir/>. + + - Messages printed to the debug log (specified by `CCACHE_LOGFILE`) have + been improved. + + - You can relax some checks that ccache does in direct mode by setting + `CCACHE_SLOPPINESS`. See the manual for more information. + + - `CCACHE_TEMPDIR` no longer needs to be on the same filesystem as + `CCACHE_DIR`. + + - The default value of `CCACHE_TEMPDIR` has been changed to + `$CCACHE_DIR/tmp` to avoid cluttering the top directory. + + - Temporary files that later will be moved into the cache are now created + in the cache directory they will end up in. This makes ccache more + friendly to Linux's directory layout. + + - Improved the test suite and added tests for most of the new + functionality. It's now also possible to specify a subset of tests to + run. + + - Standard error output from the compiler is now only stored in the cache + if it's non-empty. + + - If the compiler produces no object file or an empty object file, but + gives a zero exit status (could be due to a file system problem, a buggy + program specified by `CCACHE_PREFIX`, etc.), ccache copes with it + properly. + + - Added `installcheck` and `distcheck` make targets. + + - Clarified cache size limit options' and cleanup semantics. + + - Improved display of cache max size values. + + - The following options are no longer hashed in the preprocessor mode: + `-imacros`, `-imultilib`, `-iprefix`, `-iquote`, `-isysroot`, + `-iwithprefix`, `-iwithprefixbefore`, `-nostdinc`, `-nostdinc++` and + `-U`. + + +Bug fixes +~~~~~~~~~ + + - Various portability improvements. + + - Improved detection of home directory. + + - User-defined `CPPFLAGS` and `LDFLAGS` are now respected in the Makefile. + + - Fixed NFS issues. + + - Computation of the hash sum has been improved to decrease the risk of + hash collisions. For instance, the compiler options `-X -Y` and `-X-Y` + previously contributed equally to the hash sum. + + - Bail out on too hard compiler options `--coverage`, `-fprofile-arcs`, + `-fprofile-generate`, `-fprofile-use`, `-frepo`, `-ftest-coverage` and + `-save-temps`. Also bail out on `@file` style options. + + - Errors when using multiple `-arch` compiler options are now noted as + ``unsupported compiler option''. + + - `-MD`/`-MMD` options without `-MT`/`-MF` are now handled correctly. + + - The `-finput-charset` option is now handled correctly. + + - Added support for `-Wp,-MD` and `-Wp,-MMD` options. + + - The compiler options `-Xassembler`, `-b`, `-G` and `-V` are now correctly + recognized as taking an argument. + + - Debug information containing line numbers of predefined and command-line + macros (enabled with the compiler option `-g3`) will now be correct. + + - Corrected LRU cleanup handling of object files. + + - `utimes()` is now used instead of `utime()` when available. + + - Non-writable cache directories are now handled gracefully. + + - Corrected documentation about sharing the cache directory. + + - Fixed compilation warnings from GCC 4.3. + + - The command specified by `CCACHE_PREFIX` is no longer part of the hash. + + - Fixed bad memory access spotted by Valgrind. + + - Fixed a bug in `x_realloc`. + + - Freed memory is no longer referenced when compiling a `.i`/`.ii` file and + falling back to running the real compiler. + + - The test suite is now immune to external values of the `CCACHE_*` + environment variables. + + - Improved detection of recursive invocation. + + - The ccache binary is now not unconditionally stripped when installing. + + - Statistics counters are now correctly updated for -E option failures and + internal errors. |