build(premake): do not hardcode Premake5.lua to use clang

.github/workflows/build.yml

@@ -99,7 +99,7 @@ jobs:
           version: "5.0.0-beta2"
 
       - name: Generate project files
-        run: premake5 gmake2
+        run: premake5 --cc=clang gmake2
 
       - name: Set up problem matching
         uses: ammaraskar/gcc-problem-matcher@master

README.md

@@ -12,4 +12,5 @@ This is the master server our clients use. It is based on the DP Master Server (
 
 **IMPORTANT**
 For Unix systems, you must use Clang to compile this project. You will also be required to install the LLVM C++ Standard library to run this program.
-If you need to use another compiler, like GCC, you must use the [Mold](https://github.com/rui314/mold) linker. Additionally, you must tweak the Premake5.lua script as it is hardcoded to use Clang.
+If you need to use another compiler, like GCC, you must use the [Mold](https://github.com/rui314/mold) linker. Additionally, you may have to tweak the Premake5.lua script.
+I only support a few platforms, for more details see [build.yml](https://github.com/alterware/master-server/blob/master/.github/workflows/build.yml)

premake5.lua

@@ -71,16 +71,18 @@ filter { "system:linux", "system:macosx" }
 filter {}
 
 if os.istarget("linux") then
-	filter { "platforms:arm64" }
+	filter { "toolset:clang*", "platforms:arm64" }
 		buildoptions "--target=arm64-linux-gnu"
 		linkoptions "--target=arm64-linux-gnu"
 	filter {}
 
-	buildoptions "-stdlib=libc++"
-	linkoptions "-stdlib=libc++"
+	filter { "toolset:clang*" }
+		buildoptions "-stdlib=libc++"
+		linkoptions "-stdlib=libc++"
 
-	-- always try to use lld. LD or Gold will not work
-	linkoptions "-fuse-ld=lld"
+		-- always try to use lld. LD or Gold will not work
+		linkoptions "-fuse-ld=lld"
+	filter {}
 end
 
 filter { "system:macosx", "platforms:arm64" }