Release Notes: The EAGAIN signal is now handled correctly when emitting cached stderr output; this fixes a problem triggered by large error outputs from the compiler. Subdirectories in the cache are no longer created in read-only mode. ccache's log file descriptor is no longer made available to the compiler. Error reporting when failing to create temporary stdout/stderr files when executing the compiler has been improved. Disappearing temporary stdout/stderr files are now handled gracefully. The test suite has been fixed to work on ecryptfs.
Release Notes: Paths to dependency files are now rewritten into relative order of increased cache hits. A workaround has been added to make ccache work with a buggy GCC 4.1 when creating a pre-compiled header. Clang plugins are now hashed to catch plugin upgrades. ccache no longer crashes when the current working directory has been removed or when stderr is closed. This release corrects a corner case when parsing backslash escapes in string literals. Paths are now correctly canonicalized when computing paths relative to the base directory.
Release Notes: Several minor bugs have been fixed: failure when creating files in the cache directory has been made fatal. Recognition and hashing of GCC plugins specified with -fplugin=file has been added. CPATH, C_INCLUDE_PATH, and similar environment variables are now added to the hash to avoid false cache hits when such variables have changed. The GCC bug compatibility introduced in ccache 3.1.5 for -MT/-MQ options with concatenated arguments has been reverted.
Release Notes: This release adds support for rewriting the --sysroot argument if CCACHE_BASEDIR is used. It fixes a bug when getcwd() fails. It fixes bad alignment in "ccache -s" output.
Release Notes: Minor bugfixes and improvements have been made. There is a new statistics counter named "called for preprocessing'', improved logging, and better handling of -MF/-MT/-MQ options.
Release Notes: A work-around for a bug in gzputc() in zlib 1.2.5 has been made. 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 is now correctly closed on write errors when trying to create a cache dir tag.
Release Notes: The -MFarg, -MTarg, and -MQarg compiler options (i.e., without a space between the option and argument) are now handled correctly.
Release Notes: The compiler options -fdump-* are now correctly detected as too hard to cache. NULL return values from malloc/calloc of zero bytes are now handled correctly. An issue when parsing precompiler output on AIX has been fixed. Documentation on which information is included in the hash sum has been improved. The test suite portability has been improved.
Release Notes: Support has been added for hashing the output of a custom command to identify the compiler. Compilations that use precompiled headers are now supported. Behaviour on NFS mounts has been improved. Some bugs have been fixed.