so common header names like event.h and types.h in this source are found

Not sure whether binreloc is needed there, though.

Taken mostly from https://gitlab.kitware.com/cmake/cmake/-/issues/17834#note_435285
Constructed from cppreference notes: https://en.cppreference.com/w/cpp/filesystem#Notes
We ony handle the GCC case, the problem will go away with time.

Did not cause any error, the TTF and IMAGE includes are identical anyway

with USE_CONAN option, default off. Linux and Mac builds work just fine
without it, no need to burden them with a huge cache and binaries that
do not link to system libraries.

Conan, for some reason, puts libary include paths into the argument list
with -I, making them collide with our includes. Putting our includes
first fixes order problems.

Though, it is probably worth considering NOT naming includes "event.h"
or "types.h", or force clients to use #include <cerritos/event.h> to
avoid conflics.

for different configurations (build_debug, build_conan...)

and declare doxygen as a tool dependency

1.9.4 causes the conflicts with zlib

Just find them with find_package, add them to include and libs
with a :: qualified name.
Don't forget to declare the lib dependencies PUBLIC so the examles
get linked to them as well.

Restore old way for OpenAL library; the new way produces a valid linker
line, but then fails to link.
Add SDL2::SDL2.
Find alut, only if OpenAL was found, do not link with it blindly.

Somehow, below, it interferes badly with the BUILD_DOC option.

so taking that option out

Switch to cmake_find_package generator so the regular find_package works

Remove doxygen from conan; could not immediately get it to work

Detect alut include path

Make USE_CONAN parameter obsolete, we can just check for the conan include
file existence

because NOW they're telling me the options for sdl and sdl_ttf must
match...

As far as cmake is concerned. Compiling or linking will still fail.

Doing this for one of the examples would probably be enough...

Disable copy hack for non-windows
Even with the hack enabled, add the exe to the source file list
so the command does not fail if the DLL list is empty

Looks like "just give me the latest transitive dependency you have
that still looks compatible" is a more robust approach.

required for sane cross compilation

default to ON. Can be turned off for cross compilation where we would
not want a native version to be picked up

Using it just seems to mess things up.

We may, later, need to distinguish under which names dependencies are
available.

No working solution found yet

We are going to need it in a minute

It's not supported to turn that off here

without losing functionality. Does not work. libjpeg always gets build
via msys2 (or build fails), which later causes linker errors.

This reverts commit aeb3543.
native w64devkit compilation does not seem feasible.

Why did I think we need that?

on specific Linux distributions