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Properties

The MSBuild properties described on this page are used by the Zig SDK. These properties can all be set in PropertyGroups in your project file. Most of them should have sensible defaults for new projects; a few (such as TreatWarningsAsErrors and SymbolVisibility) have defaults that are not quite as sensible for unfortunate historical reasons.

Project Setup

  • AssemblyName: Name of the project. By default, this is set to the file name of the project file. Used to compute the final binary name (e.g. foo becomes libfoo.so).

  • OutputType (Exe, WinExe, Library): Output binary type. When targeting Windows and building executables, Exe and WinExe will target the CUI and GUI subsystems, respectively. Defaults to Library.

  • IsTestable (true, false): Enable/disable dotnet test for Zig projects. Defaults to true.

  • IsPackable (true, false): Enable/disable dotnet pack. Defaults to true.

  • IsPublishable (true, false): Enable/disable dotnet publish. Defaults to true.

  • DefaultSources (true, false): Enable/disable default Compile item includes. Defaults to true.

  • Deterministic (true, false): Enable/disable deterministic builds. Among other things, this will try to prevent the compiler from using absolute paths and will prevent usage of certain problematic language features like __TIME__. Defaults to true.

  • EditorSupport (true, false): Enable/disable editor support. For C/C++ projects, this means generating a compile_commands.json compilation database in IntermediateOutputPath. Defaults to true.

  • FormatOnBuild (true, false): Enable/disable formatting source code into canonical style on build in Zig projects. Defaults to false.

Package Information

  • Product: Human-friendly product name for the package. Defaults to the value of AssemblyName.

  • Authors: A list of package authors. Defaults to the value of AssemblyName.

  • Description: Brief description of the package. Defaults to Package Description.

  • Version: Package version in Semantic Versioning 2.0.0 form. Defaults to 1.0.0.

  • Copyright: Copyright notice for the package. Unset by default.

  • PackageLicenseExpression: SPDX license identifier for the package. Unset by default.

  • PackageProjectUrl: Website URL associated with the package. Unset by default.

  • RepositoryUrl: Source code repository URL for the package. Unset by default.

Preprocessor

  • PublicHeadersPath: Can be set to a directory containing public C/C++ headers. These headers will be included in the NuGet package and will flow to dependent projects. This directory will also be treated as an IncludeDirectory. Unset by default.

  • DefineConstants: A comma-separated list of preprocessor macros to define. Each entry can be a simple name or an assignment of the form NAME=VALUE. These macros are passed to the compiler with the -D flag. Note that this applies to Zig as well, not just C/C++.

  • CompilerDefines (true, false): Enable/disable adding some implicit DefineConstants macros that describe the Zig compiler version. Defaults to true.

  • PlatformDefines (true, false): Enable/disable adding some implicit DefineConstants macros that describe the target platform characteristics. Defaults to true.

  • ConfigurationDefines (true, false): Enable/disable adding some implicit DefineConstants macros that describe the build configuration (Debug, ReleaseFast, etc). Defaults to true.

  • PackageDefines (true, false): Enable/disable adding some implicit DefineConstants macros that describe the project being built. Defaults to true.

Language Features

  • ZigVersion (major.minor.patch): The version of the Zig compiler toolset to use. Defaults to the latest version known to the Zig SDK package that is in use.

  • LanguageStandard: The language standard used for C/C++ projects. Passed to Clang's -std flag. Defaults to the latest standards known to the compiler version that ZigVersion defaults to.

  • AccessControl (true, false): Enable/disable access control in C++ projects. Defaults to true.

  • BlockExtensions (true, false): Enable/disable Clang's block language extensions. Defaults to false.

  • CxxExceptions (true, false): Enable/disable C++ exceptions. In C projects, this controls whether the C code will be unwindable by C++ exceptions. Defaults to true.

  • AsyncExceptions (true, false): Enable/disable the ability to catch SEH exceptions with standard try/catch statements. This only applies when targeting Windows. Defaults to false.

  • CxxReflection (true, false): Enable/disable generating C++ run-time type information. This feature is required for some uses of dynamic_cast. Defaults to true.

  • MicrosoftExtensions (true, false): Enable/disable a variety of Microsoft C/C++ extensions. Defaults to false, but note that the compiler itself always enables some parts of this when targeting Windows as Win32 headers require it.

  • NoEntryPoint (true, false): Enable/disable the omission of an entry point function when building executables. Defaults to false.

  • UnicodeEnvironment (true, false): Enable/disable compiling for a Unicode environment when targeting Windows in C/C++ projects. This causes the UNICODE and _UNICODE macros to be defined, and makes it so that wmain and wWinMain entry point functions must be used when building executables. Defaults to false.

Static Analysis

  • EnforceCodeStyleInBuild (true, false): Enable/disable checking that source code is in the canonical style during build in Zig projects. Defaults to false.

  • BufferAnalysis (true, false): Enable/disable static analysis with unsafe buffer annotations in C/C++ projects. Defaults to false.

  • ConsumptionAnalysis (true, false): Enable/disable static analysis with consumption and type state annotations in C/C++ projects. Defaults to true.

  • DocumentationAnalysis (true, false): Enable/disable Doxygen documentation comment checking in C/C++ projects. Defaults to false.

  • NullabilityAnalysis (true, false): Enable/disable static analysis with nullability annotations in C/C++ projects. Defaults to true.

  • TagAnalysis (true, false): Enable/disable static analysis with type tag annotations in C/C++ projects. Defaults to true.

  • ThreadingAnalysis (true, false): Enable/disable static analysis with thread safety annotations in C/C++ projects. Defaults to true.

  • TrustAnalysis (true, false): Enable/disable static analysis with trusted computing base annotations in C/C++ projects. Defaults to true.

  • WarningLevel (0-4): How aggressively the compiler should analyze C/C++ projects for potentially problematic code. 0 disables warnings completely; 4 enables all warnings, including a few controversial ones. Defaults to 3.

  • DisableWarnings: A comma-separated list of warning names (e.g. cast-align) to disable in C/C++ projects. Unset by default.

  • TreatWarningsAsErrors (true, false): Enable/disable reporting warnings as errors in C/C++ projects. Defaults to false.

Code Generation

  • Configuration (Debug, Release): Specifies the overarching configuration. When Release is specified, ReleaseMode comes into effect. Defaults to Debug. Usually specified by the user as e.g. dotnet build -c Release.

  • DebugSymbols (true, false): Enable/disable emitting debug symbols. Defaults to true if Configuration is Debug; otherwise, false.

  • ReleaseMode (Fast, Safe, Small): The build mode to use when Configuration is set to Release. Defaults to Fast.

  • ExecutionModel (Command, Reactor): Specifies the execution model to use when building WebAssembly executables. Defaults to Command.

  • FastMath (true, false): Enable/disable certain lossy floating point optimizations that may not be standards-compliant. Defaults to false.

  • LinkTimeOptimization (true, false): Enable/disable link-time optimization. Defaults to true.

  • SymbolExports (Used, All): Specifies whether to export all public symbols or only those that are needed to link successfully. This only applies when building executables. Defaults to Used.

  • SymbolVisibility (Default, Hidden): Specifies the symbol visibility in C/C++ projects when __attribute__((visibility(...))) is not specified. Default (the default 😉) means public, while Hidden means private.

  • AllowUndefinedSymbols (true, false): Enable/disable permitting undefined symbols when linking. This usually only applies when building libraries. Defaults to false.

  • EagerBinding (true, false): Enable/disable eager binding of symbols when performing dynamic linking at run time. Eager binding has security benefits, especially in combination with RelocationHardening. It is also more reliable if calling external functions from signal handlers. Defaults to true.

  • RelocationHardening (true, false): Enable/disable marking relocations as read-only. This has security benefits, especially in combination with EagerBinding. Defaults to true.

  • ImageBase: The location in memory that the binary should be loaded at. Only takes effect at run time if DynamicImageBase is false. Unset by default.

  • DynamicImageBase (true, false): Enable/disable ASLR, i.e. randomization of the image base at run time. This only applies when targeting Windows. Defaults to true.

  • StackSize: Sets the stack size for the main thread. This only applies when building executables. Unset by default.

  • Sanitizers: A semicolon-separated list of sanitizers to instrument code with. Currently, only thread is supported. Unset by default.

Cross-Compilation

  • RuntimeIdentifier: Specifies the runtime identifier (i.e. platform) to target. When unset, Build and Clean will run for all runtime identifiers specified in RuntimeIdentifiers. Usually specified by the user as e.g. dotnet build -r linux-x64. Unset by default.

  • RuntimeIdentifiers: A semicolon-separated list of runtime identifiers that the project supports. All targets in this list will be cross-compiled as necessary. Defaults to all targets that the Zig compiler has known-good support for.

  • UseMicrosoftAbi (true, false): Enable/disable using the Microsoft ABI when targeting Windows. This may be necessary when linking to static libraries containing C++ code that was compiled for the Microsoft ABI. Note that it is currently not possible to cross-compile from non-Windows platforms when using the Microsoft ABI. Unset by default.

  • UseEmulator (true, false): Enable/disable usage of an appropriate binary emulator when cross-compiling. Defaults to true.

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