Idea:
Example: /usr/lib/gcc-snapshot/bin/gcc
Add a diversion to /usr/lib/gcc-snapshot/bin/gcc.bin
dpkg-divert --package ccache --rename --divert
/usr/lib/gcc-snapshot/bin/gcc.bin --add /usr/lib/gcc-snapshot/bin/gcc
Create a tiny script: /usr/lib/ccache/ccache.helper
#!/bin/sh
ccache $0.bin $*
And symlink:
ln -s /usr/lib/ccache/ccache.helper /usr/lib/gcc-snapshot/bin/gcc
Watch out that $0.bin may be a relative path, so keep track of the current
directory when running it.
Because this is pretty intrusive, make it a question during installation
if dpkg should do this, or give the user some method of entering specific
filenames of things that should pass through ccache this way.
If it made specific for gcc-snapshot, use dpkg triggers to keep track of
if gcc-snapshot is added after ccache was already installed.
-Ariel
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