Eu quero usar o ccache para acelerar a compilação.
Me deparei com Como ativar o ccache? .
Isto é o que eu fiz até agora:
$ sudo apt-get install -y ccache
$ dpkg -l ccache
ii ccache 3.1.6-1 Compiler cache for fast recompilation of C/C++ code
$ whereis ccache
ccache: /usr/bin/ccache /usr/lib/ccache /usr/bin/X11/ccache /usr/share/man/man1/ccache.1.gz
Anexei ccache
ao caminho adicionando-o ao meu ~/.bashrc
arquivo:
$ export PATH="/usr/lib/ccache:$PATH"
$ source ~/.bashrc
$ echo $PATH
/usr/lib/ccache:/usr/local/cuda-5.5/bin/:/usr/lib/lightdm/lightdm:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
Os links simbólicos parecem bons:
$ ll /usr/lib/ccache/
total 76
drwxr-xr-x 2 root root 4096 mai 22 10:48 ./
drwxr-xr-x 253 root root 69632 mai 22 10:48 ../
lrwxrwxrwx 1 root root 16 mai 22 10:48 avr-g++ -> ../../bin/ccache*
lrwxrwxrwx 1 root root 16 mai 22 10:48 avr-gcc -> ../../bin/ccache*
lrwxrwxrwx 1 root root 16 mai 22 10:48 avr-gcc-4.5.3 -> ../../bin/ccache*
lrwxrwxrwx 1 root root 16 mai 22 10:48 c++ -> ../../bin/ccache*
lrwxrwxrwx 1 root root 16 mai 22 10:48 c89-gcc -> ../../bin/ccache*
lrwxrwxrwx 1 root root 16 mai 22 10:48 c99-gcc -> ../../bin/ccache*
lrwxrwxrwx 1 root root 16 mai 22 10:48 cc -> ../../bin/ccache*
lrwxrwxrwx 1 root root 16 mai 22 10:48 g++ -> ../../bin/ccache*
lrwxrwxrwx 1 root root 16 mai 22 10:48 g++-4.6 -> ../../bin/ccache*
lrwxrwxrwx 1 root root 16 mai 22 10:48 gcc -> ../../bin/ccache*
lrwxrwxrwx 1 root root 16 mai 22 10:48 gcc-4.6 -> ../../bin/ccache*
lrwxrwxrwx 1 root root 16 mai 22 10:48 x86_64-linux-gnu-g++ -> ../../bin/ccache*
lrwxrwxrwx 1 root root 16 mai 22 10:48 x86_64-linux-gnu-g++-4.6 -> ../../bin/ccache*
lrwxrwxrwx 1 root root 16 mai 22 10:48 x86_64-linux-gnu-gcc -> ../../bin/ccache*
lrwxrwxrwx 1 root root 16 mai 22 10:48 x86_64-linux-gnu-gcc-4.6 -> ../../bin/ccache*
O link parece bom:
$ which g++
/usr/lib/ccache/g++
$ make
g++ -o affine_euler affine_euler.cpp -O3 -DEIGEN_NO_DEBUG -I/usr/include/eigen3
g++ -o test_eigen test_eigen.cpp -O3 -DEIGEN_NO_DEBUG -I/usr/include/eigen3
Mas o cache está vazio:
$ ccache -s
cache directory /home/dell/.ccache
cache hit (direct) 0
cache hit (preprocessed) 0
cache miss 0
files in cache 0
cache size 0 Kbytes
max cache size 1.0 Gbytes
Onde eu estou errado?