Make base compile on linux

[ReplayCoding]

Related Issue

TODO

Implementation

This PR fixes a number of issues with compiling TC2 on linux. It currently runs, and can load maps. It uses parts of #616, #486, #603.

Build Instructions

podman run -v $PWD:/src -it registry.gitlab.steamos.cloud/steamrt/sniper/sdk
# this enters a container shell
cd /src
./src/build.sh
# exit the container
./game_clean/link.sh
./game/start_tf2.sh

Screenshots

Checklist

• [x] No other PRs implement this idea.
• [x] This PR does not introduce any regressions.
• [X] I certify that this PR is my own entirely original work, or I have permission from and have attributed the relevant authors.
• [x] I have agreed to and signed this project's Contributor License Agreement.
• [x] This PR only contains changes to the engine and/or core game framework
• [x] This PR targets the community branch. (???)

• [ ] This change has been filed as an issue.
• [x] No other PRs address this.
• [x] This PR is as minimal as possible.
• [x] This PR has been built and locally tested on at least one platform.
• [ ] This PR has been tested on all platforms, on both a dedicated server and on a listen server.

Testing Checklist

	Client	Server	Version
Windows
Linux	Built, Tested		6.1.7-xanmod1 #1-NixOS SMP PREEMPT_DYNAMIC Tue Jan 1 00:00:00 UTC 1980
Mac OS

This was built under the steam "scout" and "sniper" runtime.

Caveats

• ~While the game does run, there is a bug that will cause a crash whenever a weapon is inspected.~ fixed!

Alternatives

• Don't support linux builds at all
• Rewrite the build system to use something like cmake

[melvyn2]

Mind adding the following to commits which add build.sh & other scripts?

Co-authored-by: melvyn2 <[email protected]>
Co-authored-by: HurricanePootis <[email protected]>
Co-authored-by: interrupt <[email protected]>

[ReplayCoding]

Mind adding the following to commits which add build.sh & other scripts?

Done, I've also added credits (or cherry-picked) to a couple of other commits

[ReplayCoding]

What's with this freetype2 change?

TF2 already uses the system freetype libraries, and the headers that were in common don't actually build, so I just elected to use the system headers.

[ReplayCoding]

Reposting from the #tf2-patches channel on discord:

If anyone wants to write a "proper" (if that even exists) fix for the target id panel crashes, feel free. I'm tired of trying to figure out what it is, and https://github.com/ReplayCoding/tf2-patches/commit/e05bc50c596b402a22f8e15e790059e03d244688 works fine.

[ReplayCoding]

also why was empty ccache added?

Just github being funny, it's a perms change to make it executable.

[Ristovski]

Does this only build with some specific gcc version?

$ gcc --version
gcc (Gentoo 12.2.1_p20230121-r1 p10) 12.2.1 20230121

In file included from src/libc_override_glibc.h:64,
                 from src/libc_override.h:78,
                 from src/tcmalloc.cc:157,
                 from src/debugallocation.cc:79:
src/libc_override_gcc_and_weak.h:56:33: error: ISO C++17 does not allow dynamic exception specifications
   56 | void* operator new(size_t size) throw (std::bad_alloc)
      |                                 ^~~~~
src/libc_override_gcc_and_weak.h:60:35: error: ISO C++17 does not allow dynamic exception specifications
   60 | void* operator new[](size_t size) throw (std::bad_alloc)
      |                                   ^~~~~
cc1plus: note: unrecognized command-line option '-Wno-reserved-user-defined-literal' may have been intended to silence earlier diagnostics
make: *** [Makefile:4083: libtcmalloc_debug_la-debugallocation.lo] Error 1
make: *** Waiting for unfinished jobs....

[ReplayCoding]

It's only been tested on the steam runtimes, which go up to GCC 10.3.0 on the sniper runtime.

[Ristovski]

It's only been tested on the steam runtimes, which go up to GCC 10.3.0 on the sniper runtime.

gcc 12 defaults to C++17, thus this will require setting -std=gnu++14 explicitly (which is what gcc 10 defaults to)

[mastercoms]

Also, you should update create_clean.sh to also support linux, here's a start I made on one:

#!/bin/bash
#
# Run script within the directory
BIN_DIR=$(dirname "$(readlink -fn "$0")")
cd "${BIN_DIR}" || exit 2

set -e

DEV_DIR=../game
CLEAN_DIR=../game_dist
CLEAN_DEBUG_DIR=${CLEAN_DIR}_debug
rm -rf ${CLEAN_DIR}
rm -rf ${CLEAN_DEBUG_DIR}
mkdir -p ${CLEAN_DIR}/{bin,tf/bin}
mkdir -p ${CLEAN_DEBUG_DIR}/{bin,tf/bin}
cp -rf copy/* ${CLEAN_DIR}
cp -rf copy/* ${DEV_DIR}

EXE_EXT=
DLL_EXT=.so
PDB_EXT=.dbg

declare -a FILES=(
                  {hl2_linux,hl2.sh}
                 )

declare -a DLLS_CI=(
                  bin/engine
                  bin/replay
                  bin/launcher
                  bin/inputsystem
                  bin/{material,soundemitter}system
                  bin/{shaderapi,stdshader_}dx9
                  bin/vgui{matsurface,2}
                  bin/{data,scenefile}cache
                  bin/sourcevr
                  bin/studiorender
                  bin/bsppack
                  bin/filesystem_stdio
                  bin/libvstdlib
                  bin/libtier0
                  tf/bin/{client,server}
                 )

declare -a DLLS=(
                  bin/GameUI
                  bin/ServerBrowser
                 )

for F in "${FILES[@]}"; do
  cp -f ${DEV_DIR}/${F} ${CLEAN_DIR}/${F}
done

for F in "${DLLS_CI[@]}"; do
  cp -f ${DEV_DIR}/${F}$DLL_EXT ${CLEAN_DIR}/${F}$DLL_EXT
#  cp -f ${DEV_DIR}/${F,,}.pdb ${CLEAN_DEBUG_DIR}/${F,,}.pdb
done

for F in "${DLLS[@]}"; do
  cp -f ${DEV_DIR}/${F}$DLL_EXT ${CLEAN_DIR}/${F}$DLL_EXT
#  cp -f ${DEV_DIR}/${F}.pdb ${CLEAN_DEBUG_DIR}/${F}.pdb
done

declare -a FILES=(
                  ../LICENSE_SDK
                  ../.github/README.md
                  ../thirdpartylegalnotices.txt
                 )
for F in "${FILES[@]}"; do
  ORIG=$(basename ${F})
  cp -f ${F} ${CLEAN_DIR}/${ORIG}
done

[ReplayCoding]

I've added a create_clean_linux.sh script, and updated link.sh to work from game_dist. game_dist should now be entirely self-contained.