chore: use c++20 and add llvm toolchain for linux ci tests (#184)

Author: Kelwan

.github/workflows/main.yml

@@ -20,6 +20,8 @@ jobs:
   test-windows:
     runs-on: windows-latest
     steps:
+      - name: Ecsact SDK
+        uses: ecsact-dev/[email protected]
       - uses: actions/cache@v3
         with:
           path: |
@@ -35,6 +37,8 @@ jobs:
   test-linux:
     runs-on: ubuntu-latest
     steps:
+      - name: Ecsact SDK
+        uses: ecsact-dev/[email protected]
       - uses: actions/cache@v3
         with:
           path: |

MODULE.bazel

@@ -9,6 +9,7 @@ bazel_dep(name = "bazel_skylib", version = "1.4.2")
 bazel_dep(name = "ecsact_runtime", version = "0.5.0")
 bazel_dep(name = "rules_ecsact", version = "0.4.8")
 bazel_dep(name = "ecsact_codegen", version = "0.1.2")
+bazel_dep(name = "toolchains_llvm", version = "1.0.0", dev_dependency = True)
 
 bazel_dep(name = "hedron_compile_commands", dev_dependency = True)
 git_override(
@@ -22,3 +23,9 @@ ecsact.sdk_toolchain(version = "0.6.2")
 use_repo(ecsact, "ecsact_sdk", "ecsact_toolchains")
 
 register_toolchains("@ecsact_toolchains//:all")
+
+llvm = use_extension("@toolchains_llvm//toolchain/extensions:llvm.bzl", "llvm", dev_dependency = True)
+llvm.toolchain(llvm_version = "17.0.6")
+
+use_repo(llvm, "llvm_toolchain")
+register_toolchains("@llvm_toolchain//:all", dev_dependency = True)

systems_header_codegen/systems_header_codegen.cc

@@ -50,7 +50,7 @@ static std::string make_package_inc_guard_str(ecsact_package_id package_id) {
 		inc_guard_str.begin(),
 		inc_guard_str.end(),
 		inc_guard_str.begin(),
-		std::toupper
+		[](char c) { return static_cast<char>(std::toupper(c)); }
 	);
 
 	inc_guard_str += "_H";