/// <summary>
/// Default constructor.
/// </summary>
public CppCompileEnvironment(CppPlatform Platform, CppConfiguration Configuration, string Architecture, CPPHeaders Headers)
{
this.Platform = Platform;
this.Configuration = Configuration;
this.Architecture = Architecture;
this.Headers = Headers;
}
/// <summary>
/// Copy constructor.
/// </summary>
protected CPPEnvironment(CPPEnvironment InCopyEnvironment)
{
PrecompiledHeaderFile = InCopyEnvironment.PrecompiledHeaderFile;
Headers = InCopyEnvironment.Headers;
bHackHeaderGenerator = InCopyEnvironment.bHackHeaderGenerator;
Config = new CPPEnvironmentConfiguration(InCopyEnvironment.Config);
}
public FileItem CachePCHUsageForCPPFile(FileItem CPPFile, CppIncludePaths IncludePaths, CppPlatform Platform)
{
// @todo ubtmake: We don't really need to scan every file looking for PCH headers, just need one. The rest is just for error checking.
// @todo ubtmake: We don't need all of the direct includes either. We just need the first, unless we want to check for errors.
List <DependencyInclude> DirectIncludeFilenames = GetDirectIncludeDependencies(CPPFile, bOnlyCachedDependencies: false);
if (UnrealBuildTool.bPrintDebugInfo)
{
Log.TraceVerbose("Found direct includes for {0}: {1}", Path.GetFileName(CPPFile.AbsolutePath), string.Join(", ", DirectIncludeFilenames.Select(F => F.IncludeName)));
}
if (DirectIncludeFilenames.Count == 0)
{
return(null);
}
DependencyInclude FirstInclude = DirectIncludeFilenames[0];
// Resolve the PCH header to an absolute path.
// Check NullOrEmpty here because if the file could not be resolved we need to throw an exception
if (FirstInclude.IncludeResolvedNameIfSuccessful != null &&
// ignore any preexisting resolve cache if we are not configured to use it.
bUseIncludeDependencyResolveCache &&
// if we are testing the resolve cache, we force UBT to resolve every time to look for conflicts
!bTestIncludeDependencyResolveCache)
{
CPPFile.PrecompiledHeaderIncludeFilename = FirstInclude.IncludeResolvedNameIfSuccessful;
return(FileItem.GetItemByFileReference(CPPFile.PrecompiledHeaderIncludeFilename));
}
// search the include paths to resolve the file.
string FirstIncludeName = FirstInclude.IncludeName;
UEBuildPlatform BuildPlatform = UEBuildPlatform.GetBuildPlatformForCPPTargetPlatform(Platform);
// convert back from relative to host path if needed
if (!BuildPlatform.UseAbsolutePathsInUnityFiles())
{
FirstIncludeName = RemoteExports.UnconvertPath(FirstIncludeName);
}
FileItem PrecompiledHeaderIncludeFile = CPPHeaders.FindIncludedFile(CPPFile.Reference, FirstIncludeName, IncludePaths);
if (PrecompiledHeaderIncludeFile == null)
{
FirstIncludeName = RemoteExports.UnconvertPath(FirstInclude.IncludeName);
throw new BuildException("The first include statement in source file '{0}' is trying to include the file '{1}' as the precompiled header, but that file could not be located in any of the module's include search paths.", CPPFile.AbsolutePath, FirstIncludeName);
}
IncludeDependencyCache.CacheResolvedIncludeFullPath(CPPFile, 0, PrecompiledHeaderIncludeFile.Reference, bUseIncludeDependencyResolveCache, bTestIncludeDependencyResolveCache);
CPPFile.PrecompiledHeaderIncludeFilename = PrecompiledHeaderIncludeFile.Reference;
return(PrecompiledHeaderIncludeFile);
}
/// <summary>
/// Copy constructor.
/// </summary>
/// <param name="Other">Environment to copy settings from</param>
public CppCompileEnvironment(CppCompileEnvironment Other)
{
Platform = Other.Platform;
Configuration = Other.Configuration;
Architecture = Other.Architecture;
OutputDirectory = Other.OutputDirectory;
PCHOutputDirectory = Other.PCHOutputDirectory;
LocalShadowDirectory = Other.LocalShadowDirectory;
PrecompiledHeaderIncludeFilename = Other.PrecompiledHeaderIncludeFilename;
PrecompiledHeaderAction = Other.PrecompiledHeaderAction;
bUseRTTI = Other.bUseRTTI;
bUseInlining = Other.bUseInlining;
bUseAVX = Other.bUseAVX;
bFasterWithoutUnity = Other.bFasterWithoutUnity;
MinSourceFilesForUnityBuildOverride = Other.MinSourceFilesForUnityBuildOverride;
MinFilesUsingPrecompiledHeaderOverride = Other.MinFilesUsingPrecompiledHeaderOverride;
bBuildLocallyWithSNDBS = Other.bBuildLocallyWithSNDBS;
bEnableExceptions = Other.bEnableExceptions;
bEnableObjCExceptions = Other.bEnableObjCExceptions;
bShadowVariableWarningsAsErrors = Other.bShadowVariableWarningsAsErrors;
bEnableShadowVariableWarnings = Other.bEnableShadowVariableWarnings;
bUndefinedIdentifierWarningsAsErrors = Other.bUndefinedIdentifierWarningsAsErrors;
bEnableUndefinedIdentifierWarnings = Other.bEnableUndefinedIdentifierWarnings;
bOptimizeCode = Other.bOptimizeCode;
bOptimizeForSize = Other.bOptimizeForSize;
bCreateDebugInfo = Other.bCreateDebugInfo;
bIsBuildingLibrary = Other.bIsBuildingLibrary;
bIsBuildingDLL = Other.bIsBuildingDLL;
bUseStaticCRT = Other.bUseStaticCRT;
bUseDebugCRT = Other.bUseDebugCRT;
bOmitFramePointers = Other.bOmitFramePointers;
bEnableOSX109Support = Other.bEnableOSX109Support;
bUsePDBFiles = Other.bUsePDBFiles;
bSupportEditAndContinue = Other.bSupportEditAndContinue;
bUseIncrementalLinking = Other.bUseIncrementalLinking;
bAllowLTCG = Other.bAllowLTCG;
bPGOOptimize = Other.bPGOOptimize;
bPGOProfile = Other.bPGOProfile;
PGOFilenamePrefix = Other.PGOFilenamePrefix;
PGODirectory = Other.PGODirectory;
bPrintTimingInfo = Other.bPrintTimingInfo;
bAllowRemotelyCompiledPCHs = Other.bAllowRemotelyCompiledPCHs;
IncludePaths = new CppIncludePaths(Other.IncludePaths);
ForceIncludeFiles.AddRange(Other.ForceIncludeFiles);
Definitions.AddRange(Other.Definitions);
AdditionalArguments = Other.AdditionalArguments;
AdditionalFrameworks.AddRange(Other.AdditionalFrameworks);
PrecompiledHeaderFile = Other.PrecompiledHeaderFile;
Headers = Other.Headers;
bHackHeaderGenerator = Other.bHackHeaderGenerator;
bHideSymbolsByDefault = Other.bHideSymbolsByDefault;
}
/// <summary>
/// Get a set of directly included files from the given source file, resolving their include paths to FileItem instances.
/// </summary>
/// <param name="SourceFile">The file to check.</param>
/// <param name="IncludePaths">Include paths to search.</param>
/// <param name="bOnlyCachedDependencies">Whether to just return cached dependencies, or update the cache with new results.</param>
/// <returns>Set of files that are included</returns>
private HashSet <FileItem> GetDirectlyIncludedFiles(FileItem SourceFile, CppIncludePaths IncludePaths, bool bOnlyCachedDependencies)
{
// Gather a list of names of files directly included by this C++ file.
List <DependencyInclude> DirectIncludes = GetDirectIncludeDependencies(SourceFile, bOnlyCachedDependencies: bOnlyCachedDependencies);
// Build a list of the unique set of files that are included by this file.
HashSet <FileItem> DirectlyIncludedFiles = new HashSet <FileItem>();
// require a for loop here because we need to keep track of the index in the list.
for (int DirectlyIncludedFileNameIndex = 0; DirectlyIncludedFileNameIndex < DirectIncludes.Count; ++DirectlyIncludedFileNameIndex)
{
// Resolve the included file name to an actual file.
DependencyInclude DirectInclude = DirectIncludes[DirectlyIncludedFileNameIndex];
if (!DirectInclude.HasAttemptedResolve ||
// ignore any preexisting resolve cache if we are not configured to use it.
!bUseIncludeDependencyResolveCache ||
// if we are testing the resolve cache, we force UBT to resolve every time to look for conflicts
bTestIncludeDependencyResolveCache
)
{
++TotalDirectIncludeResolveCacheMisses;
// search the include paths to resolve the file
FileItem DirectIncludeResolvedFile = CPPHeaders.FindIncludedFile(SourceFile.Location, DirectInclude.IncludeName, IncludePaths);
if (DirectIncludeResolvedFile != null)
{
DirectlyIncludedFiles.Add(DirectIncludeResolvedFile);
}
IncludeDependencyCache.CacheResolvedIncludeFullPath(SourceFile, DirectlyIncludedFileNameIndex, DirectIncludeResolvedFile != null ? DirectIncludeResolvedFile.Location : null, bUseIncludeDependencyResolveCache, bTestIncludeDependencyResolveCache);
}
else
{
// we might have cached an attempt to resolve the file, but couldn't actually find the file (system headers, etc).
if (DirectInclude.IncludeResolvedNameIfSuccessful != null)
{
DirectlyIncludedFiles.Add(FileItem.GetItemByFileReference(DirectInclude.IncludeResolvedNameIfSuccessful));
}
}
}
TotalDirectIncludeResolves += DirectIncludes.Count;
return(DirectlyIncludedFiles);
}
/// <summary>
/// Finds the files directly or indirectly included by the given C++ file.
/// </summary>
/// <param name="CPPFile">C++ file to get the dependencies for.</param>
/// <param name="Result">List of CPPFile dependencies.</param>
/// <returns>false if CPPFile is still being processed further down the callstack, true otherwise.</returns>
public bool FindAndCacheAllIncludedFiles(FileItem CPPFile, UEBuildPlatform BuildPlatform, CPPIncludeInfo CPPIncludeInfo, ref IncludedFilesSet Result, bool bOnlyCachedDependencies)
{
IncludedFilesSet IncludedFileList;
Dictionary <FileItem, IncludedFilesSet> IncludedFilesMap = bOnlyCachedDependencies ? OnlyCachedIncludedFilesMap : ExhaustiveIncludedFilesMap;
if (!IncludedFilesMap.TryGetValue(CPPFile, out IncludedFileList))
{
DateTime TimerStartTime = DateTime.UtcNow;
IncludedFileList = new IncludedFilesSet();
// Add an uninitialized entry for the include file to avoid infinitely recursing on include file loops.
IncludedFilesMap.Add(CPPFile, IncludedFileList);
// Gather a list of names of files directly included by this C++ file.
List <DependencyInclude> DirectIncludes = GetDirectIncludeDependencies(CPPFile, BuildPlatform, bOnlyCachedDependencies: bOnlyCachedDependencies);
// Build a list of the unique set of files that are included by this file.
HashSet <FileItem> DirectlyIncludedFiles = new HashSet <FileItem>();
// require a for loop here because we need to keep track of the index in the list.
for (int DirectlyIncludedFileNameIndex = 0; DirectlyIncludedFileNameIndex < DirectIncludes.Count; ++DirectlyIncludedFileNameIndex)
{
// Resolve the included file name to an actual file.
DependencyInclude DirectInclude = DirectIncludes[DirectlyIncludedFileNameIndex];
if (!DirectInclude.HasAttemptedResolve ||
// ignore any preexisting resolve cache if we are not configured to use it.
!BuildConfiguration.bUseIncludeDependencyResolveCache ||
// if we are testing the resolve cache, we force UBT to resolve every time to look for conflicts
BuildConfiguration.bTestIncludeDependencyResolveCache
)
{
++TotalDirectIncludeResolveCacheMisses;
// search the include paths to resolve the file
FileItem DirectIncludeResolvedFile = CPPHeaders.FindIncludedFile(DirectInclude.IncludeName, !BuildConfiguration.bCheckExternalHeadersForModification, CPPIncludeInfo.GetIncludesPathsToSearch(CPPFile), CPPIncludeInfo.IncludeFileSearchDictionary);
if (DirectIncludeResolvedFile != null)
{
DirectlyIncludedFiles.Add(DirectIncludeResolvedFile);
}
IncludeDependencyCache.CacheResolvedIncludeFullPath(CPPFile, DirectlyIncludedFileNameIndex, DirectIncludeResolvedFile != null ? DirectIncludeResolvedFile.Reference : null);
}
else
{
// we might have cached an attempt to resolve the file, but couldn't actually find the file (system headers, etc).
if (DirectInclude.IncludeResolvedNameIfSuccessful != null)
{
DirectlyIncludedFiles.Add(FileItem.GetItemByFileReference(DirectInclude.IncludeResolvedNameIfSuccessful));
}
}
}
TotalDirectIncludeResolves += DirectIncludes.Count;
// Convert the dictionary of files included by this file into a list.
foreach (FileItem DirectlyIncludedFile in DirectlyIncludedFiles)
{
// Add the file we're directly including
IncludedFileList.Add(DirectlyIncludedFile);
// Also add all of the indirectly included files!
if (FindAndCacheAllIncludedFiles(DirectlyIncludedFile, BuildPlatform, CPPIncludeInfo, ref IncludedFileList, bOnlyCachedDependencies: bOnlyCachedDependencies) == false)
{
// DirectlyIncludedFile is a circular dependency which is still being processed
// further down the callstack. Add this file to its circular dependencies list
// so that it can update its dependencies later.
IncludedFilesSet DirectlyIncludedFileIncludedFileList;
if (IncludedFilesMap.TryGetValue(DirectlyIncludedFile, out DirectlyIncludedFileIncludedFileList))
{
DirectlyIncludedFileIncludedFileList.CircularDependencies.Add(CPPFile);
}
}
}
// All dependencies have been processed by now so update all circular dependencies
// with the full list.
foreach (FileItem CircularDependency in IncludedFileList.CircularDependencies)
{
IncludedFilesSet CircularDependencyIncludedFiles = IncludedFilesMap[CircularDependency];
foreach (FileItem IncludedFile in IncludedFileList)
{
CircularDependencyIncludedFiles.Add(IncludedFile);
}
}
// No need to keep this around anymore.
IncludedFileList.CircularDependencies.Clear();
// Done collecting files.
IncludedFileList.bIsInitialized = true;
TimeSpan TimerDuration = DateTime.UtcNow - TimerStartTime;
TotalTimeSpentGettingIncludes += TimerDuration.TotalSeconds;
}
if (IncludedFileList.bIsInitialized)
{
// Copy the list of files included by this file into the result list.
foreach (FileItem IncludedFile in IncludedFileList)
{
// If the result list doesn't contain this file yet, add the file and the files it includes.
// NOTE: For some reason in .NET 4, Add() is over twice as fast as calling UnionWith() on the set
Result.Add(IncludedFile);
}
return(true);
}
else
{
// The IncludedFileList.bIsInitialized was false because we added a dummy entry further down the call stack. We're already processing
// the include list for this header elsewhere in the stack frame, so we don't need to add anything here.
return(false);
}
}
/// <summary>
/// Loads a UBTMakefile from disk
/// </summary>
/// <param name="MakefilePath">Path to the makefile to load</param>
/// <param name="ProjectFile">Path to the project file</param>
/// <param name="ReasonNotLoaded">If the function returns null, this string will contain the reason why</param>
/// <param name="WorkingSet">Interface to query which source files are in the working set</param>
/// <returns>The loaded makefile, or null if it failed for some reason. On failure, the 'ReasonNotLoaded' variable will contain information about why</returns>
public static UBTMakefile LoadUBTMakefile(FileReference MakefilePath, FileReference ProjectFile, ISourceFileWorkingSet WorkingSet, out string ReasonNotLoaded)
{
// Check the directory timestamp on the project files directory. If the user has generated project files more
// recently than the UBTMakefile, then we need to consider the file to be out of date
FileInfo UBTMakefileInfo = new FileInfo(MakefilePath.FullName);
if (!UBTMakefileInfo.Exists)
{
// UBTMakefile doesn't even exist, so we won't bother loading it
ReasonNotLoaded = "no existing makefile";
return(null);
}
// Check the build version
FileInfo BuildVersionFileInfo = new FileInfo(BuildVersion.GetDefaultFileName().FullName);
if (BuildVersionFileInfo.Exists && UBTMakefileInfo.LastWriteTime.CompareTo(BuildVersionFileInfo.LastWriteTime) < 0)
{
Log.TraceVerbose("Existing makefile is older than Build.version, ignoring it");
ReasonNotLoaded = "Build.version is newer";
return(null);
}
// @todo ubtmake: This will only work if the directory timestamp actually changes with every single GPF. Force delete existing files before creating new ones? Eh... really we probably just want to delete + create a file in that folder
// -> UPDATE: Seems to work OK right now though on Windows platform, maybe due to GUID changes
// @todo ubtmake: Some platforms may not save any files into this folder. We should delete + generate a "touch" file to force the directory timestamp to be updated (or just check the timestamp file itself. We could put it ANYWHERE, actually)
// Installed Build doesn't need to check engine projects for outdatedness
if (!UnrealBuildTool.IsEngineInstalled())
{
if (DirectoryReference.Exists(ProjectFileGenerator.IntermediateProjectFilesPath))
{
DateTime EngineProjectFilesLastUpdateTime = new FileInfo(ProjectFileGenerator.ProjectTimestampFile).LastWriteTime;
if (UBTMakefileInfo.LastWriteTime.CompareTo(EngineProjectFilesLastUpdateTime) < 0)
{
// Engine project files are newer than UBTMakefile
Log.TraceVerbose("Existing makefile is older than generated engine project files, ignoring it");
ReasonNotLoaded = "project files are newer";
return(null);
}
}
}
// Check the game project directory too
if (ProjectFile != null)
{
string ProjectFilename = ProjectFile.FullName;
FileInfo ProjectFileInfo = new FileInfo(ProjectFilename);
if (!ProjectFileInfo.Exists || UBTMakefileInfo.LastWriteTime.CompareTo(ProjectFileInfo.LastWriteTime) < 0)
{
// .uproject file is newer than UBTMakefile
Log.TraceVerbose("Makefile is older than .uproject file, ignoring it");
ReasonNotLoaded = ".uproject file is newer";
return(null);
}
DirectoryReference MasterProjectRelativePath = ProjectFile.Directory;
string GameIntermediateProjectFilesPath = Path.Combine(MasterProjectRelativePath.FullName, "Intermediate", "ProjectFiles");
if (Directory.Exists(GameIntermediateProjectFilesPath))
{
DateTime GameProjectFilesLastUpdateTime = new DirectoryInfo(GameIntermediateProjectFilesPath).LastWriteTime;
if (UBTMakefileInfo.LastWriteTime.CompareTo(GameProjectFilesLastUpdateTime) < 0)
{
// Game project files are newer than UBTMakefile
Log.TraceVerbose("Makefile is older than generated game project files, ignoring it");
ReasonNotLoaded = "game project files are newer";
return(null);
}
}
}
// Check to see if UnrealBuildTool.exe was compiled more recently than the UBTMakefile
DateTime UnrealBuildToolTimestamp = new FileInfo(Assembly.GetExecutingAssembly().Location).LastWriteTime;
if (UBTMakefileInfo.LastWriteTime.CompareTo(UnrealBuildToolTimestamp) < 0)
{
// UnrealBuildTool.exe was compiled more recently than the UBTMakefile
Log.TraceVerbose("Makefile is older than UnrealBuildTool.exe, ignoring it");
ReasonNotLoaded = "UnrealBuildTool.exe is newer";
return(null);
}
// Check to see if any BuildConfiguration files have changed since the last build
List <XmlConfig.InputFile> InputFiles = XmlConfig.FindInputFiles();
foreach (XmlConfig.InputFile InputFile in InputFiles)
{
FileInfo InputFileInfo = new FileInfo(InputFile.Location.FullName);
if (InputFileInfo.LastWriteTime > UBTMakefileInfo.LastWriteTime)
{
Log.TraceVerbose("Makefile is older than BuildConfiguration.xml, ignoring it");
ReasonNotLoaded = "BuildConfiguration.xml is newer";
return(null);
}
}
UBTMakefile LoadedUBTMakefile = null;
try
{
DateTime LoadUBTMakefileStartTime = DateTime.UtcNow;
using (FileStream Stream = new FileStream(UBTMakefileInfo.FullName, FileMode.Open, FileAccess.Read))
{
BinaryFormatter Formatter = new BinaryFormatter();
LoadedUBTMakefile = Formatter.Deserialize(Stream) as UBTMakefile;
}
if (UnrealBuildTool.bPrintPerformanceInfo)
{
double LoadUBTMakefileTime = (DateTime.UtcNow - LoadUBTMakefileStartTime).TotalSeconds;
Log.TraceInformation("LoadUBTMakefile took " + LoadUBTMakefileTime + "s");
}
}
catch (Exception Ex)
{
Log.TraceWarning("Failed to read makefile: {0}", Ex.Message);
ReasonNotLoaded = "couldn't read existing makefile";
return(null);
}
if (!LoadedUBTMakefile.IsValidMakefile())
{
Log.TraceWarning("Loaded makefile appears to have invalid contents, ignoring it ({0})", UBTMakefileInfo.FullName);
ReasonNotLoaded = "existing makefile appears to be invalid";
return(null);
}
// Check if any of the target's Build.cs files are newer than the makefile
foreach (UEBuildTarget Target in LoadedUBTMakefile.Targets)
{
string TargetCsFilename = Target.TargetRulesFile.FullName;
if (TargetCsFilename != null)
{
FileInfo TargetCsFile = new FileInfo(TargetCsFilename);
bool bTargetCsFileExists = TargetCsFile.Exists;
if (!bTargetCsFileExists || TargetCsFile.LastWriteTime > UBTMakefileInfo.LastWriteTime)
{
Log.TraceVerbose("{0} has been {1} since makefile was built, ignoring it ({2})", TargetCsFilename, bTargetCsFileExists ? "changed" : "deleted", UBTMakefileInfo.FullName);
ReasonNotLoaded = string.Format("changes to target files");
return(null);
}
}
IEnumerable <string> BuildCsFilenames = Target.GetAllModuleBuildCsFilenames();
foreach (string BuildCsFilename in BuildCsFilenames)
{
if (BuildCsFilename != null)
{
FileInfo BuildCsFile = new FileInfo(BuildCsFilename);
bool bBuildCsFileExists = BuildCsFile.Exists;
if (!bBuildCsFileExists || BuildCsFile.LastWriteTime > UBTMakefileInfo.LastWriteTime)
{
Log.TraceVerbose("{0} has been {1} since makefile was built, ignoring it ({2})", BuildCsFilename, bBuildCsFileExists ? "changed" : "deleted", UBTMakefileInfo.FullName);
ReasonNotLoaded = string.Format("changes to module files");
return(null);
}
}
}
foreach (FlatModuleCsDataType FlatCsModuleData in Target.FlatModuleCsData.Values)
{
if (FlatCsModuleData.BuildCsFilename != null && FlatCsModuleData.ExternalDependencies.Count > 0)
{
string BaseDir = Path.GetDirectoryName(FlatCsModuleData.BuildCsFilename);
foreach (string ExternalDependency in FlatCsModuleData.ExternalDependencies)
{
FileInfo DependencyFile = new FileInfo(Path.Combine(BaseDir, ExternalDependency));
bool bDependencyFileExists = DependencyFile.Exists;
if (!bDependencyFileExists || DependencyFile.LastWriteTime > UBTMakefileInfo.LastWriteTime)
{
Log.TraceVerbose("{0} has been {1} since makefile was built, ignoring it ({2})", DependencyFile.FullName, bDependencyFileExists ? "changed" : "deleted", UBTMakefileInfo.FullName);
ReasonNotLoaded = string.Format("changes to external dependency");
return(null);
}
}
}
}
}
// We do a check to see if any modules' headers have changed which have
// acquired or lost UHT types. If so, which should be rare,
// we'll just invalidate the entire makefile and force it to be rebuilt.
foreach (UEBuildTarget Target in LoadedUBTMakefile.Targets)
{
// Get all H files in processed modules newer than the makefile itself
HashSet <string> HFilesNewerThanMakefile =
new HashSet <string>(
Target.FlatModuleCsData
.SelectMany(x => x.Value.ModuleSourceFolder != null ? Directory.EnumerateFiles(x.Value.ModuleSourceFolder.FullName, "*.h", SearchOption.AllDirectories) : Enumerable.Empty <string>())
.Where(y => Directory.GetLastWriteTimeUtc(y) > UBTMakefileInfo.LastWriteTimeUtc)
.OrderBy(z => z).Distinct()
);
// Get all H files in all modules processed in the last makefile build
HashSet <string> AllUHTHeaders = new HashSet <string>(Target.FlatModuleCsData.Select(x => x.Value).SelectMany(x => x.UHTHeaderNames));
// Check whether any headers have been deleted. If they have, we need to regenerate the makefile since the module might now be empty. If we don't,
// and the file has been moved to a different module, we may include stale generated headers.
foreach (string FileName in AllUHTHeaders)
{
if (!File.Exists(FileName))
{
Log.TraceVerbose("File processed by UHT was deleted ({0}); invalidating makefile", FileName);
ReasonNotLoaded = string.Format("UHT file was deleted");
return(null);
}
}
// Makefile is invalid if:
// * There are any newer files which contain no UHT data, but were previously in the makefile
// * There are any newer files contain data which needs processing by UHT, but weren't not previously in the makefile
foreach (string Filename in HFilesNewerThanMakefile)
{
bool bContainsUHTData = CPPHeaders.DoesFileContainUObjects(Filename);
bool bWasProcessed = AllUHTHeaders.Contains(Filename);
if (bContainsUHTData != bWasProcessed)
{
Log.TraceVerbose("{0} {1} contain UHT types and now {2} , ignoring it ({3})", Filename, bWasProcessed ? "used to" : "didn't", bWasProcessed ? "doesn't" : "does", UBTMakefileInfo.FullName);
ReasonNotLoaded = string.Format("new files with reflected types");
return(null);
}
}
}
// If adaptive unity build is enabled, do a check to see if there are any source files that became part of the
// working set since the Makefile was created (or, source files were removed from the working set.) If anything
// changed, then we'll force a new Makefile to be created so that we have fresh unity build blobs. We always
// want to make sure that source files in the working set are excluded from those unity blobs (for fastest possible
// iteration times.)
if (LoadedUBTMakefile.bUseAdaptiveUnityBuild)
{
// Check if any source files in the working set no longer belong in it
foreach (FileItem SourceFile in LoadedUBTMakefile.SourceFileWorkingSet)
{
if (!WorkingSet.Contains(SourceFile.Location) && File.GetLastWriteTimeUtc(SourceFile.AbsolutePath) > UBTMakefileInfo.LastWriteTimeUtc)
{
Log.TraceVerbose("{0} was part of source working set and now is not; invalidating makefile ({1})", SourceFile.AbsolutePath, UBTMakefileInfo.FullName);
ReasonNotLoaded = string.Format("working set of source files changed");
return(null);
}
}
// Check if any source files that are eligible for being in the working set have been modified
foreach (FileItem SourceFile in LoadedUBTMakefile.CandidateSourceFilesForWorkingSet)
{
if (WorkingSet.Contains(SourceFile.Location) && File.GetLastWriteTimeUtc(SourceFile.AbsolutePath) > UBTMakefileInfo.LastWriteTimeUtc)
{
Log.TraceVerbose("{0} was part of source working set and now is not; invalidating makefile ({1})", SourceFile.AbsolutePath, UBTMakefileInfo.FullName);
ReasonNotLoaded = string.Format("working set of source files changed");
return(null);
}
}
}
ReasonNotLoaded = null;
return(LoadedUBTMakefile);
}
/// <summary>
/// Default constructor.
/// </summary>
public CPPEnvironment(CPPHeaders Headers)
{
this.Headers = Headers;
}