[issue35921] Use ccache by default

[Christian Heimes]

Christian Heimes <lists at cheimes.de> added the comment:

The PR is not required. I have been using ccache for many years with a custom PATH. On Debian, it's recommended to modify PATH manually. On Fedora PATH is automatically modified by the ccache package.

$ echo $PATH
/home/heimes/bin:/usr/lib64/ccache:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin
$ ls -la /usr/lib64/ccache/
total 252
drwxr-xr-x.   2 root root   4096 Dec 21 11:23 .
dr-xr-xr-x. 210 root root 249856 Jan 29 10:28 ..
lrwxrwxrwx.   1 root root     16 Dec 21 11:23 c++ -> ../../bin/ccache
lrwxrwxrwx.   1 root root     16 Dec 21 11:23 cc -> ../../bin/ccache
lrwxrwxrwx.   1 root root     16 Dec 21 11:23 g++ -> ../../bin/ccache
lrwxrwxrwx.   1 root root     16 Dec 21 11:23 gcc -> ../../bin/ccache
lrwxrwxrwx.   1 root root     16 Dec 21 11:23 x86_64-redhat-linux-c++ -> ../../bin/ccache
lrwxrwxrwx.   1 root root     16 Dec 21 11:23 x86_64-redhat-linux-g++ -> ../../bin/ccache
lrwxrwxrwx.   1 root root     16 Dec 21 11:23 x86_64-redhat-linux-gcc -> ../../bin/ccache

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nosy: +christian.heimes

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<https://bugs.python.org/issue35921>
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