Globbing generally misses to pick up files which were added/deleted
after CMake's configure. This is a nuissance but can be alleviated using
CONFIGURE_DEPENDS (available since CMake 3.12) which adds a check for
new/deleted files before each compile and - if necessary - restarts the
configuration. On my system, the check takes < 0.1 sec.
(Side note: CONFIGURE_DEPENDS is not guaranteed to work accross all
generators, but at least it works for Ninja which everyone @CH seems to
use.)
Enable:
- bugprone-lambda-function-name: "Checks for attempts to get the name of
a function from within a lambda expression. The name of a lambda is
always something like operator(), which is almost never what was
intended."
- bugprone-unhandled-self-assignment: "Finds user-defined copy
assignment operators which do not protect the code against
self-assignment either by checking self-assignment explicitly or using
the copy-and-swap or the copy-and-move method.""
- hicpp-invalid-access-moved: "Warns if an object is used after it has
been moved."
- hicpp-use-noexcept: "This check replaces deprecated dynamic exception
specifications with the appropriate noexcept specification (introduced
in C++11)"
- hicpp-use-override: "Adds override (introduced in C++11) to overridden
virtual functions and removes virtual from those functions as it is
not required."
- performance-type-promotion-in-math-fn: "Finds calls to C math library
functions (from math.h or, in C++, cmath) with implicit float to
double promotions."
Split up:
- cppcoreguidelines-*. Some of them may be useful (haven't checked in
detail), therefore allow to toggle them individually.
Disable:
- linuxkernel-*. Obvious.
The check activated ccache unconditionally for all non-Clang compilers
(= GCC) while allowing ancient ccache versions for these. Perhaps there
was a reason for that in the past but it's simpler to only require a
minimum ccache version.
To simplify further, also require at least ccache 3.3 (released in 2016)
instead of 3.2.1 (released in 2014).
