DOCS.md

Custom Functionality

Redirection

IDO recomp currently has two forms of path redirection, both involving the /usr folder.

/usr/lib and /usr/lib/DCC

In order for users to not having to worry about installing the binaries in particular locations in /usr/lib or /usr/lib/DCC, recomp automatically redirects /usr/lib/ and /usr/lib/DCC paths. This is done by determining the location of cc and redirecting to the same directory. This does mean all the binaries and err.english.cc are expected to be a part of a single flattened directory.

It is also possible to override the auto redirect by using the environment variable USR_LIB with the desired redirection path. This can be used if the binaries are not in a flattened directory with cc or if on Linux and are unable to read /proc/self/exe.

Wrapper functions implementing this redirection:

• init_file
• wrapper_execvp
• wrapper_open

/usr/include

The other form of redirection is completely optional and is done by setting the environment variable USR_INCLUDE to the desired redirection path. This will than redirect all opened files files there. This is done so that the mdebug section file paths will still use /usr/include path, but the files themselves can be located elsewhere for greater flexibility.

Wrapper functions implementing this redirection:

• wrapper_open