* BUILDING.md: rm tautology & move phrase to relevant place
* BUILDING.md: mv place build info after dependency info & add subsection
`autogen.sh` is in strange state, it consists only of `autoreconf --install`,
and thanks for doing everything right. Also it spews `\n` verbatim,
because person was writing/testing it on mac. Standartizing it in later proposal.
* BUILDING.md: upd deps info to universal documentaion
It is impossible to provide&keep the deps list/names for all OSes.
Also different `configure` options require different dependencies provided.
To provide the main documentation on why and what is needed is more important
then a bunch of partial one-liner examples.
& the differences between systems and package names are minimal.
So better describe the required dependencies in terms of Debian/Ubuntu,
and allow maintainers to fiqure-out their OS-specific variants.
* BUILDING.md: Android: upd commands to be a commands block
* BUILDING.md: mv Windows down, to logically group all *nix info
* BUILDING.md: mv sec Additional info on deps to be after main info on deps
* BUILDING.md: upd text properly outlining command & lib names
* BUILDING.md: Deps: Jack: add mention of libqt5opengl5
Since it uses Qt, so also `libqt5opengl5`.
* BUILDING.md: Additonal info: upd libglm
Co-Authored-By: Mischa Spiegelmock <me@mish.dev>
* BUILDING.md: Building: upd ./configure comments
Co-Authored-By: Mischa Spiegelmock <me@mish.dev>
This is intended to install the folders as deposited at the source. If the backend is used then the desired folder will be selected.
This allows a better overlay of the available presets and avoids overwriting the same filenames in different folders during installation.
New configure value "--enable-preset-subdirs"
* autogen.sh: add more portable #!, provide -e key explicitly
This is minority, NixOS and some other distros do not have this `sh`,
paradoxically `/usr/bin/env` path is more widespread.
Also documenting `set -e`
* autogen.sh: upd output, make it portable
`echo` has different behaviour, keys and possibilities on different systems.
Example:
```
echo "Line1\nLine2"
```
Is probably parses `\n` in `macOS`, while Linux `echo` didn't, resulting
in verbatim line.
`printf` special character parsing is much more portable.
Also removed the thanks "You followed directions! Great work!"
to the person that just ran one command, which is a script that has one command
inside and thanks the person for that.
