install ccache port or add a package:
add the following to /etc/make.conf:
add the following to /.cshrc:
logout and login again before using ccache because when You dont ccache will use /root/.ccache dir instead of /var/tmp/ccache.
ccache can be shared between several computers the same as ports tree for example, check man ccache for more info.
ADDED 2007.2.15:
example ccache stats from my box.
ADDED 2007.2.16:
comparasion of buildworld times with and without ccache:
If you face a problem with /root/.ccache being used instead of /var/tmp/ccache then you may solve it that way:
Code:
# cd /usr/ports/devel/ccache && make install clean
# pkg_add -r ccache
add the following to /etc/make.conf:
Code:
.if !defined(NO_CCACHE)
CC= /usr/local/libexec/ccache/world-cc
CXX= /usr/local/libexec/ccache/world-c++
.endif
.if ${.CURDIR:M*/ports/devel/ccache}
NO_CCACHE= yes
.endif
add the following to /.cshrc:
Code:
# set ccache varibles
setenv PATH /usr/local/libexec/ccache:$PATH
setenv CCACHE_PATH /usr/bin:/usr/local/bin
setenv CCACHE_DIR /var/tmp/ccache
setenv CCACHE_LOGFILE /var/log/ccache.log
# set ccache temp size to 512MB (default 1GB)
if ( -x /usr/local/bin/ccache ) then
/usr/local/bin/ccache -M 512m > /dev/null
endif
logout and login again before using ccache because when You dont ccache will use /root/.ccache dir instead of /var/tmp/ccache.
ccache can be shared between several computers the same as ports tree for example, check man ccache for more info.
ADDED 2007.2.15:
example ccache stats from my box.
Code:
% ccache -s
cache directory /var/tmp/ccache
cache hit 18562
cache miss 102820
called for link 9824
multiple source files 75
compile failed 1610
preprocessor error 1446
not a C/C++ file 3747
autoconf compile/link 16982
unsupported compiler option 511
no input file 6698
files in cache 49631
cache size 464.3 Mbytes
max cache size 512.0 Mbytes
ADDED 2007.2.16:
comparasion of buildworld times with and without ccache:
Code:
# without ccache
make -j1 buildworld 4148.38s user 937.02s system 97% cpu [B]1:27:00[/B].40 total
# with ccache
make -j1 buildworld 1043.30s user 703.76s system 88% cpu [B]32:50[/B].02 total
If you face a problem with /root/.ccache being used instead of /var/tmp/ccache then you may solve it that way:
Code:
% cd /home/${USER}
% rm -rf .ccache
% ln -s /var/tmp/ccache .ccache
% ls -l .ccache
lrwxr-xr-x 1 ${USER} ${USER} 15 Dec 19 15:20 .ccache -> /var/tmp/ccache
% ccache -s
cache directory /var/tmp/ccache
cache hit 165292
cache miss 327142
called for link 38002
multiple source files 216
compile failed 5182
preprocessor error 4934
couldn't find the compiler 1
not a C/C++ file 26249
autoconf compile/link 52665
unsupported compiler option 1379
no input file 23289
files in cache 79438
cache size 530.2 Mbytes
max cache size 512.0 Mbytes
% sudo ccache -s
cache directory /home/vermaden/.ccache
cache hit 165292
cache miss 327142
called for link 38002
multiple source files 216
compile failed 5182
preprocessor error 4934
couldn't find the compiler 1
not a C/C++ file 26249
autoconf compile/link 52665
unsupported compiler option 1379
no input file 23289
files in cache 79438
cache size 530.2 Mbytes
max cache size 512.0 Mbytes