Correct Paths to Emacs C Sources after Installation

[Alexander Shukaev]

Hello,

After building and installing Emacs, the C sources are not installed. How
to ask the build system for that?

Furthermore, if Emacs was built in some random (usually temporary) build
directory, then: when issuing Emacs documentation on some function which is
defined in C code and clicking the `C source code' link, Emacs would open
the corresponding C source file which is located in this random build
directory. This is definitely not something one would expect, especially in
the case when Emacs was built on a developer machine and distributed to
other users in a prebuilt form.

How to tell Emacs to recognize that the C sources are in say the "src"
directory which would be on the same level as the "bin" directory and
company (preferably in the relative form).

Thank you.

Regards,
Alexander