** here's some basic instructions for building
   q2pro/q2proi386 on linux
** setting homedir, libdir, bindir etc is so that q2pro
   will look for files within subfolders of itself
** modify ~/quake2 to your quake2 install location
** in that location run this: ln -s . q2pro

# compiler
sudo apt install gcc-multilib g++-multilib meson git cmake

# for the server & client:
sudo apt install zlib1g-dev libcurl4-gnutls-dev libnghttp2-dev

# for the client
sudo apt install libogg-dev libvorbis-dev libopenal-dev libpng-dev libjpeg-dev
sudo apt install libsdl2-dev libdecor-0-dev libegl-dev
# wayland supoort if needed
sudo apt install libwayland-dev wayland-protocols


- from a terminal/shell:
git clone https://github.com/skullernet/q2pro
cd q2pro
nano -w .ci/x86-linux-gnu.txt
** begin copy:

[binaries]
c = '/usr/bin/gcc'
cpp = '/usr/bin/g++'
ar = '/usr/bin/gcc-ar'
strip = '/usr/bin/strip'

[properties]
c_args = '-m32 -mstackrealign'
c_link_args = '-m32 -mstackrealign'
cpp_args = '-m32 -mstackrealign'
cpp_link_args = '-m32 -mstackrealign'

[host_machine]
system = 'linux'
cpu_family = 'x86'
cpu = 'i686'
endian = 'little'

** end copy.
- yes, i686 is correct for i386.
- ctrl-x, Y to save, enter to confirm filename

# setup
# note: do not use prefix or 'x'dir settings for mingw builds
meson setup buildx64
meson setup --cross-file .ci/x86-linux-gnu.txt -Dgame-abi-hack=enabled buildi386

- nano -w myopt.sh
** begin copy:

#!/bin/sh
meson configure -Dprefix='~/quake2' -Dvariable-fps=true $1
meson configure -Dhomedir='.' -Dlibdir='.' -Dbindir='.' -Ddatadir='.' $1
meson configure -Dvid-geometry='1920x1080' -Dvid-modelist='320x240 640x480 800x600 1024x768 1280x1024 1366x768 1600x900 1920x1080 2560x1440' $1
meson configure -Dbuildtype='release' -Ddebug=false $1
meson configure -Dsystem-wide=false $1
meson --reconfigure $1

** end copy.

- ctrl-x, Y to save, enter to confirm
- chmod +x myopt.sh
- ./myopt.sh buildx64
- ./myopt.sh buildi386

# compiling:
meson compile -C buildx64
meson compile -C buildi386

cp buildx64/q2pro ~/quake2
cp buildx64/q2proded ~/quake2
cp buildx64/gamex86_64.so ~/quake2/baseq2
cp buildi386/q2proded ~/quake2/q2prodedi386
cp buildi386/gamei386.so ~/quake2/baseq2

cp buildi386/q2pro ~/quake2/q2proi386
- you should only need this if you want to play an old
  mod (gamei386.so) locally/offline.  it probably won't even
  build unless you install i386 dev libs for everything.
- you just need q2prodedi386 to run a server, then use
  64bit client to connect to the old server

- in the future just run 'git pull' from q2pro folder to check for updates
- then meson --reconfigure buildxyz
- meson compile -C buildxyz


# windows cross compiling - not currently covered
# sudo apt install mingw-w64 nasm
# meson setup --cross-file .ci/x86_64/i686-ming...txt -Dwrap_mode=forcefallback buildwin64
# needs a few extra config settings, -Dlibcurl zlib libpng etc etc
#