/// <summary>
/// Setup the target environment for building
/// </summary>
/// <param name="Target">Settings for the target being compiled</param>
/// <param name="CompileEnvironment">The compile environment for this target</param>
/// <param name="LinkEnvironment">The link environment for this target</param>
public override void SetUpEnvironment(ReadOnlyTargetRules Target, CppCompileEnvironment CompileEnvironment, LinkEnvironment LinkEnvironment)
{
CompileEnvironment.Definitions.Add("WITH_DATABASE_SUPPORT=0"); //@todo linux: valid?
// During the native builds, check the system includes as well (check toolchain when cross-compiling?)
string BaseLinuxPath = SDK.GetBaseLinuxPathForArchitecture(Target.Architecture);
if (BuildHostPlatform.Current.Platform == UnrealTargetPlatform.Linux && String.IsNullOrEmpty(BaseLinuxPath))
{
CompileEnvironment.IncludePaths.SystemIncludePaths.Add(new DirectoryReference("/usr/include"));
}
if (CompileEnvironment.bAllowLTCG != LinkEnvironment.bAllowLTCG)
{
Log.TraceWarning("Inconsistency between LTCG settings in Compile and Link environments: link one takes priority");
CompileEnvironment.bAllowLTCG = LinkEnvironment.bAllowLTCG;
}
// disable to LTO for modular builds
if (CompileEnvironment.bAllowLTCG && Target.LinkType != TargetLinkType.Monolithic)
{
Log.TraceWarning("LTO (LTCG) for modular builds is not supported, disabling it");
CompileEnvironment.bAllowLTCG = false;
LinkEnvironment.bAllowLTCG = false;
}
// link with Linux libraries.
LinkEnvironment.AdditionalLibraries.Add("pthread");
// let this class or a sub class do settings specific to that class
SetUpSpecificEnvironment(CompileEnvironment, LinkEnvironment);
}
/// <summary>
/// Setup the target environment for building
/// </summary>
/// <param name="Target">Settings for the target being compiled</param>
/// <param name="CompileEnvironment">The compile environment for this target</param>
/// <param name="LinkEnvironment">The link environment for this target</param>
public override void SetUpEnvironment(ReadOnlyTargetRules Target, CppCompileEnvironment CompileEnvironment, LinkEnvironment LinkEnvironment)
{
// During the native builds, check the system includes as well (check toolchain when cross-compiling?)
string BaseLinuxPath = SDK.GetBaseLinuxPathForArchitecture(Target.Architecture);
if (BuildHostPlatform.Current.Platform == UnrealTargetPlatform.Linux && String.IsNullOrEmpty(BaseLinuxPath))
{
CompileEnvironment.SystemIncludePaths.Add(new DirectoryReference("/usr/include"));
}
if (CompileEnvironment.bPGOOptimize != LinkEnvironment.bPGOOptimize)
{
throw new BuildException("Inconsistency between PGOOptimize settings in Compile ({0}) and Link ({1}) environments",
CompileEnvironment.bPGOOptimize,
LinkEnvironment.bPGOOptimize
);
}
if (CompileEnvironment.bPGOProfile != LinkEnvironment.bPGOProfile)
{
throw new BuildException("Inconsistency between PGOProfile settings in Compile ({0}) and Link ({1}) environments",
CompileEnvironment.bPGOProfile,
LinkEnvironment.bPGOProfile
);
}
if (CompileEnvironment.bPGOOptimize)
{
DirectoryReference BaseDir = UnrealBuildTool.EngineDirectory;
if (Target.ProjectFile != null)
{
BaseDir = DirectoryReference.FromFile(Target.ProjectFile);
}
CompileEnvironment.PGODirectory = Path.Combine(BaseDir.FullName, "Build", Target.Platform.ToString(), "PGO").Replace('\\', '/') + "/";
CompileEnvironment.PGOFilenamePrefix = "profile.profdata";
LinkEnvironment.PGODirectory = CompileEnvironment.PGODirectory;
LinkEnvironment.PGOFilenamePrefix = CompileEnvironment.PGOFilenamePrefix;
}
// For consistency with other platforms, also enable LTO whenever doing profile-guided optimizations.
// Obviously both PGI (instrumented) and PGO (optimized) binaries need to have that
if (CompileEnvironment.bPGOProfile || CompileEnvironment.bPGOOptimize)
{
CompileEnvironment.bAllowLTCG = true;
LinkEnvironment.bAllowLTCG = true;
}
if (CompileEnvironment.bAllowLTCG != LinkEnvironment.bAllowLTCG)
{
throw new BuildException("Inconsistency between LTCG settings in Compile ({0}) and Link ({1}) environments",
CompileEnvironment.bAllowLTCG,
LinkEnvironment.bAllowLTCG
);
}
// link with Linux libraries.
LinkEnvironment.SystemLibraries.Add("pthread");
// let this class or a sub class do settings specific to that class
SetUpSpecificEnvironment(Target, CompileEnvironment, LinkEnvironment);
}
