PR/44659 CVS commit: pkgsrc/devel/ccache

["Thomas Klausner" <wiz%netbsd.org@localhost>]

The following reply was made to PR pkg/44659; it has been noted by GNATS.

From: "Thomas Klausner" <wiz%netbsd.org@localhost>
To: gnats-bugs%gnats.NetBSD.org@localhost
Cc: 
Subject: PR/44659 CVS commit: pkgsrc/devel/ccache
Date: Wed, 2 Mar 2011 06:40:52 +0000

 Module Name:   pkgsrc
 Committed By:  wiz
 Date:          Wed Mar  2 06:40:52 UTC 2011
 
 Modified Files:
        pkgsrc/devel/ccache: Makefile distinfo
 Removed Files:
        pkgsrc/devel/ccache/patches: patch-aa patch-ab
 
 Log Message:
 Update to 3.1.4, inspired by PR 44659 by Marko Schuetz Schmuck:
 
 ccache 3.1.4
 Bug fixes
 
 ccache 3.1.3
 Bug and portability fixes
 
 ccache 3.1.2
 Bug fixes
 
 ccache 3.1.1
 Bug fixes
 
 ccache 3.1
 
 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
 
 ccache 3.0.1
 Bug fixes
 
 ccache 3.0
 
 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`.
 
 
 To generate a diff of this commit:
 cvs rdiff -u -r1.15 -r1.16 pkgsrc/devel/ccache/Makefile
 cvs rdiff -u -r1.8 -r1.9 pkgsrc/devel/ccache/distinfo
 cvs rdiff -u -r1.3 -r0 pkgsrc/devel/ccache/patches/patch-aa
 cvs rdiff -u -r1.2 -r0 pkgsrc/devel/ccache/patches/patch-ab
 
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.