I'm compiling third-party kernel modules. Their build system goes to /usr/src/linux-headers-[version] (of a custom kernel chroot) and runs make from there.

I want to find out, which files - sources and headers - have been used for the compilation, and which have not. Standard scripts/Makefile.build creates *.d files for each compiled source, and I'd like to use that... but these files are deleted after short processing. (That is rule_cc_o_c definition in Makefile.build.)

What could be a way to collect these files with minimal modifications to the standard build system?


Try using libtrashcan. After compiling it and installing, preload the library to your process.

For example, the following will create a test file and then try to remove it, but because of libtrashcan the unlink system call will be replaced by a move, so the file will end up in ~/Trash:

export LD_PRELOAD=/usr/local/lib/libtrash.so.3.3
touch testfile
rm testfile

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