Changes:
* Added CCACHE_READONLY option.
* Added CCACHE_TEMPDIR option.
* Fixed handling of hard-linked compiler on AIX.
* Added O_BINARY support, to try and support win32 compiles.
* Show cache directory in stats output.
* Fixed handling of HOME environment variable.
NOTE: This release changes the hash input slighly, so you will probably
find that you will not get any hits against your existing cache when
you upgrade.
a new environment variable CCACHE_HASHCC whose value may be used to
override the compiler-specific addition to the hash value used to
distinguish between two compiles. This is useful where the compiler is
a shell script generated on-the-fly that executes the real compiler.
This allows ccache to function correctly within the pkgsrc
infrastructure.
Added CCACHE_UMASK option
Added support for compilation of .i files
Fixed bug with DEPENDENCIES_OUTPUT flag
Added support for more -Mx options
Added separate stderr channel for distcc
Improved test suite
However changes since 2.1.1 include:
# added a test suite
# better integration with distcc
# added CCACHE_PREFIX option
# disabled hard links by default
# recognise some more gcc options (eg. profiling)
# added --ccache-skip option
- fixed warning output line numbers
- added some more C++ extensions
- fixed a minor md4 hashing bug
- added support for some of the -M compiler options
