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Most BRUTAL build failures come from using the wrong project model, installing the wrong package family, or confusing the C# framework with the unrelated tcp-brutal Linux kernel module. BRUTAL’s documented prerequisites are the .NET 10 SDK and Windows or Linux; rendering additionally requires a Vulkan 1.3-capable GPU with current drivers. The Vulkan SDK is optional when you need validation layers during development.
The supported first build is package-based: create a clean console project, add Ahwoo.Brutal.Core and Ahwoo.Brutal.Glfw, then run it with dotnet run. If you expected a complete solution or build script inside the repository, the missing files are currently the explanation: the project README says those files are still forthcoming.
First identify which “Brutal” you are compiling
Before changing a package reference or installing a compiler, inspect the names in the error. Two unrelated projects use the Brutal name, and their build systems have almost nothing in common.
BRUTAL: the C# framework and game-engine foundation
The C# project uses the Ahwoo.Brutal.* namespace and NuGet packages. Its normal workflow is a .NET project file restored by the dotnet command. Errors usually mention C# namespaces, assemblies, package restore, target frameworks, Vulkan bindings, GLFW, SDL, shaders, ImGui, audio, networking, or physics.
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tcp-brutal: an unrelated Linux kernel module
The separate tcp-brutal project is built through the Linux kernel’s Kbuild system. Its diagnostics refer to KERNEL_DIR, insmod, dkms, tcp_congestion_ops, kernel headers, Clang or LLVM, GCC, or C-library headers. It is not a .NET library and cannot be repaired by adding an Ahwoo.Brutal package.
| Error clues | Project | Correct starting point |
|---|---|---|
Ahwoo.Brutal.*, C# compiler errors, NuGet restore |
BRUTAL C# framework | Install .NET 10 SDK and use a .NET project with the required NuGet packages. |
KERNEL_DIR, obj-m, insmod, tcp_congestion_ops |
tcp-brutal kernel module | Use a Linux kernel build tree and the project’s Kbuild/Makefile instructions. |
Verify the BRUTAL toolchain before troubleshooting code
Install and select the .NET 10 SDK
BRUTAL’s documented managed prerequisite is the .NET 10 SDK, not merely a runtime. The SDK supplies the compiler, project tooling, restore logic, and the dotnet command used by the supported example.
- Install the .NET 10 SDK for your operating system.
- Open a new terminal so the updated PATH is loaded.
- Run
dotnet --version. Confirm that the selected SDK is a .NET 10 release rather than an older SDK or a runtime-only installation. - Run
dotnet --infoif several SDKs are installed. Check the active SDK, operating-system identifier, and installed runtimes.
If dotnet is not found, the SDK is either absent or not on PATH. If the command reports an older major version, install .NET 10 or correct the SDK selection before investigating BRUTAL source files. A runtime alone cannot create or compile a project.
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Check the operating system and graphics prerequisite
The documented operating systems are Windows and Linux. A managed project can restore and compile without a discrete graphics card, but a program that initializes BRUTAL’s renderer needs a Vulkan 1.3-capable GPU and current graphics drivers. A compiler error and a Vulkan initialization error are different problems; do not try to solve a driver failure by adding C# references.
Understand what the Vulkan SDK does
The Vulkan SDK is optional for validation layers during development. It is not listed as a prerequisite for the minimal GLFW window example. Install it when you need validation diagnostics or Vulkan development tooling, but do not treat its absence as proof that a basic package restore is broken.
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Use the supported package-based build first
A clean console project separates SDK, project-file, and package-restore problems from any application code you already have. Run the following commands exactly in a new directory:
dotnet new console -n HelloBrutal
cd HelloBrutal
dotnet add package Ahwoo.Brutal.Core
dotnet add package Ahwoo.Brutal.Glfw
dotnet runThe expected sequence is project creation, package restore, compilation, and application launch. If this small project works, the original failure is probably in your project’s target framework, package set, generated files, or application code rather than in the basic BRUTAL installation.
If project creation fails
- “The command ‘dotnet’ was not found”: install the .NET 10 SDK and reopen the terminal.
- The console template is unavailable: verify that an SDK, not only a runtime, is installed and that
dotnet newcan list templates. - The project targets an unsupported framework: inspect the generated
.csprojand the SDK output fromdotnet --info. Start with the framework produced by the current .NET 10 console template instead of manually changing it.
If package restore fails
Read the first restore error, not only the final summary. Confirm the package IDs character-for-character: Ahwoo.Brutal.Core and Ahwoo.Brutal.Glfw. Check that the project can reach its configured NuGet source and that the source is enabled. A private, offline, or misconfigured source can make an existing package appear to be missing.
Also check the framework requested by the package and the framework declared in your project. The project documentation does not publish a complete package-version and target-framework matrix, so there is no reliable universal version pin to substitute for the error details. If restore reports an incompatibility, capture the package version, target framework, and complete diagnostic message before choosing a version.
If restore succeeds but compilation cannot find a namespace
Restore only installs the packages you requested and their declared dependencies. It does not automatically include every BRUTAL subsystem. A missing type usually means the feature-specific package family is absent, not that every package must be added.
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Match missing types to the correct package family
Add the smallest package family that supplies the feature you are using. This keeps the project easier to restore and makes later errors easier to classify.
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|---|---|---|
| Window creation and basic input | Brutal.Glfw or the documented SDL packages |
Windowing and input integration. |
| Vulkan rendering | Brutal.Vulkan, Brutal.Vulkan.Abstractions, Brutal.Vulkan.Vma |
Vulkan bindings, abstractions, and memory-allocation support. |
| Shader compilation | Brutal.ShaderC, Brutal.Slang |
Shader compilation integrations. |
| Immediate-mode UI | The listed BRUTAL ImGui package | ImGui integration. |
| Audio, networking, or physics | The separate package listed for the relevant subsystem | That subsystem’s API and implementation. |
Use the namespace in the compiler message to guide the choice. For example, a renderer type missing from a project that only references Core and GLFW points toward the Vulkan package family; a shader compiler type points toward ShaderC or Slang. Do not add all available packages pre-emptively. Extra native dependencies increase restore and runtime failure paths without fixing an unrelated compile error.
Add a package and verify the result
- Add the suspected package with
dotnet add package PackageName, replacingPackageNamewith the exact documented ID. - Run
dotnet restoreand read any compatibility or source error. - Run
dotnet buildbefore launching the application. - If the missing type remains, check its namespace import and the package’s installed version in the project file or restore output.
A package reference fixes an assembly-resolution problem; it does not fix a misspelled type, an incorrect namespace, an API change between package versions, or a native driver problem.
Separate compile-time failures from graphics runtime failures
BRUTAL can compile successfully and still fail when the program starts. Use the stage at which the error occurs to choose the next action.
Restore stage
Messages about an unavailable package, an unreachable source, or an incompatible target framework belong to NuGet and the project file. Confirm package IDs, sources, SDK selection, and target framework. Do not install the Vulkan SDK for a restore error.
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C# compilation stage
Messages such as “type or namespace could not be found” usually indicate a missing feature package, a missing project reference, or an incorrect namespace. Map the API to the package family table, add only that family, and rebuild.
Native loading or application-start stage
Errors about loading a native library, creating a window, or initializing a Vulkan instance occur after managed compilation. Check that the operating system is supported, the required native components are present, and the graphics driver exposes Vulkan 1.3. A successful dotnet build does not validate the machine’s graphics stack.
Vulkan device or validation stage
If the application reaches Vulkan initialization but reports unavailable extensions, an unsuitable device, or validation diagnostics, update the graphics driver and verify the GPU capability. Install the Vulkan SDK only when validation layers or its development tooling are needed. Treat validation output as a graphics-development diagnostic rather than a missing .NET dependency.
What to do when the repository has no solution or build script
Readers often clone the repository, look for a .sln, project files, or a top-level build script, and conclude that a dependency is missing when none of those files exist. The project README explicitly states: “Project files, a solution and build scripts are coming. Until then use the NuGet packages, and use this repository to read and fork the code.”
That statement changes the correct troubleshooting path:
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- Use the published NuGet packages for a supported application build.
- Use the repository as source to read or fork, not as a guaranteed turnkey solution to compile locally.
- Do not invent a solution file, generate project files from guesses, or assume that a missing script indicates a damaged clone.
- If you are experimenting with a source fork, expect to supply your own project structure and resolve source dependencies yourself; this is distinct from the documented package workflow.
When a build guide tells you to open a solution that is not present, the problem is the guide’s assumption, not necessarily your checkout. Reproduce the package-based console example first, then decide whether a source fork is worth maintaining.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Diagnose common failure patterns
“Package not found” or “Unable to load the service index”
- Run
dotnet nuget list sourceto see which sources are enabled. - Confirm the source used by your environment is reachable and allowed by your network policy.
- Recheck the package ID and spelling.
- Retry
dotnet restorein the clean sample project.
If the clean sample cannot restore either, the issue is the SDK or NuGet configuration rather than your application code.
“The type or namespace name does not exist”
Identify whether the missing symbol belongs to Core, GLFW or SDL, Vulkan, shader compilation, ImGui, audio, networking, or physics. Add the corresponding package family and ensure the source file imports the namespace used by that API. If the symbol is still absent, compare the API spelling with the package version actually restored instead of adding unrelated dependencies.
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Confirm that the application is using the GLFW or SDL package intended for its windowing path and that the platform’s native windowing requirements are available. This is not evidence that the Core package is incomplete. For a renderer, continue by checking Vulkan 1.3 support and current drivers.
Build works, but Vulkan initialization fails
Check the GPU and driver first. The Vulkan SDK is not a substitute for a Vulkan-capable device or a current driver. If the failure is a validation-layer message, install and configure the SDK for development diagnostics; if it is a missing device or unsupported API version, resolve the graphics-stack limitation.
Different results on Windows and Linux
Keep the managed project and package references identical while checking platform-specific native behavior separately. Windows and Linux are both documented operating systems, but driver availability, loader installation, window-system integration, and environment variables can differ. Establish that restore and managed compilation succeed before comparing native startup behavior.
If the error is actually tcp-brutal
Stop following .NET instructions if the log belongs to the kernel module. The tcp-brutal Makefile sets obj-m and invokes the Linux kernel build tree under /lib/modules/$(KERNEL_RELEASE)/build. You need a Linux kernel development environment, matching headers or build tree, and the tools expected by that kernel.
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Kernel build-tree symptoms
- A missing
/lib/modules/.../builddirectory means the matching kernel headers or development tree are unavailable. - Errors involving
KERNEL_DIRindicate that the Makefile needs the correct kernel source/build location. - Compiler diagnostics mentioning Clang, LLVM, or a versioned GCC reflect the compiler used to build the kernel, not the .NET SDK.
- Header errors involving
tcp_congestion_ops, BBRv3, ortso_segsrequire the kernel API and header adjustments described by that project.
Release-specific compatibility notes
The tcp-brutal 2.0.1 release notes call out fixes for XanMod and BBRv3 headers, Clang/LLVM builds, versioned GCC such as gcc-14, and C-library headers. Those details matter only to the kernel-module project. Installing them will not repair a C# BRUTAL package restore or compilation error.
Quick Recap
A practical decision tree
- Does the error mention
Ahwoo.Brutal.*? If yes, continue with the .NET workflow. If no, check for kernel-module clues before changing anything. - Does
dotnet --versionshow .NET 10? If not, install or select the required SDK. - Can a clean console project restore Core and GLFW? If not, fix NuGet sources, package IDs, SDK selection, or framework compatibility.
- Is the failure a missing managed type? Add the package family for that feature, not every BRUTAL package.
- Does compilation succeed but startup fail? Investigate native windowing and Vulkan runtime requirements.
- Are you trying to compile a cloned repository without a solution? Use NuGet for the supported path; the README says the solution and build scripts are still forthcoming.
Clean rebuild checklist
- Confirm the project is BRUTAL C#, not tcp-brutal.
- Confirm the .NET 10 SDK with
dotnet --version. - Create and test a clean console project.
- Use exact package IDs and an enabled NuGet source.
- Add only the package family required by the feature.
- Run
dotnet restore, thendotnet build, before launching. - For rendering, verify Vulkan 1.3 capability and current drivers.
- Install the Vulkan SDK only when validation layers are required.
- Do not expect a complete source-build solution until the project publishes the promised project files and scripts.
- For kernel-module errors, switch to the tcp-brutal Kbuild environment instead of modifying the .NET project.
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