问题描述
所以我一直在尝试学习 unrealengine4 并想使用 vim 作为我的编辑器。 作为自动完成引擎，我想将 CoC 与 clangd 一起使用。 经过一番摆弄以获取我的 compile_commands.json 后，几乎一切都按预期工作。 但是我在打开的每个文档中都会遇到以下两个错误。 （只是为了澄清，当我使用 VSCode 时，如果我使用 clangd 完成引擎，我也会遇到相同的错误）
In included file: Exactly one of [UE_BUILD_DEBUG UE_BUILD_DEVELOPMENT UE_BUILD_TEST UE_BUILD_SHIPPING] should be defined to be 1[clang: pp_hash_error]-
Incomplete type 'UOpenDoor' named in nested name specifier[clang: incomplete_nested_name_spec]（假设我打开一个名为 OpenDoor.cpp 的模块）
我能够追溯到虚幻引擎构建工具的第一个错误，因为包含此错误定义的文件位于 UnrealEngine/Engine/Source/Runtime/Core/Public/Misc/Build.h
文件如下：
#pragma once
/*--------------------------------------------------------------------------------
Build configuration coming from UBT,do not modify
--------------------------------------------------------------------------------*/
// Set any configuration not defined by UBT to zero
#ifndef UE_BUILD_DEBUG
#define UE_BUILD_DEBUG 0
#endif
#ifndef UE_BUILD_DEVELOPMENT
#define UE_BUILD_DEVELOPMENT 0
#endif
#ifndef UE_BUILD_TEST
#define UE_BUILD_TEST 0
#endif
#ifndef UE_BUILD_SHIPPING
#define UE_BUILD_SHIPPING 0
#endif
#ifndef UE_GAME
#define UE_GAME 0
#endif
#ifndef UE_EDITOR
#define UE_EDITOR 0
#endif
#ifndef UE_BUILD_SHIPPING_WITH_EDITOR
#define UE_BUILD_SHIPPING_WITH_EDITOR 0
#endif
#ifndef UE_BUILD_DOCS
#define UE_BUILD_DOCS 0
#endif
/**
* Whether compiling for dedicated server or not.
*/
#ifndef UE_SERVER
#define UE_SERVER 0
#endif
// Ensure that we have one,and only one build config coming from UBT
#if UE_BUILD_DEBUG + UE_BUILD_DEVELOPMENT + UE_BUILD_TEST + UE_BUILD_SHIPPING != 1
#error Exactly one of [UE_BUILD_DEBUG UE_BUILD_DEVELOPMENT UE_BUILD_TEST UE_BUILD_SHIPPING] should be defined to be 1
#endif
/*--------------------------------------------------------------------------------
Legacy defined we want to make sure don't compile if they came in a merge.
--------------------------------------------------------------------------------*/
#define FINAL_RELEASE_DEBUGCONSOLE (#)
#define FINAL_RELEASE (#)
#define SHIPPING_PC_GAME (#)
#define UE_BUILD_FINAL_RELEASE (#)
/*----------------------------------------------------------------------------
Mandatory bridge options coming from UBT,do not modify directly!
----------------------------------------------------------------------------*/
/**
* Whether we are compiling with the editor; must be defined by UBT
*/
#ifndef WITH_EDITOR
#define WITH_EDITOR 0 // for auto-complete
#error UBT should always define WITH_EDITOR to be 0 or 1
#endif
/**
* Whether we are compiling with the engine; must be defined by UBT
*/
#ifndef WITH_ENGINE
#define WITH_ENGINE 0 // for auto-complete
#error UBT should always define WITH_ENGINE to be 0 or 1
#endif
/**
* Whether we are compiling with developer tools; must be defined by UBT
*/
#ifndef WITH_UNREAL_DEVELOPER_TOOLS
#define WITH_UNREAL_DEVELOPER_TOOLS 0 // for auto-complete
#error UBT should always define WITH_UNREAL_DEVELOPER_TOOLS to be 0 or 1
#endif
/**
* Whether we are compiling with plugin support; must be defined by UBT
*/
#ifndef WITH_PLUGIN_SUPPORT
#define WITH_PLUGIN_SUPPORT 0 // for auto-complete
#error UBT should always define WITH_PLUGIN_SUPPORT to be 0 or 1
#endif
/**
* Whether we are compiling with Slate accessibility and automation support
*/
#ifndef WITH_ACCESSIBILITY
#define WITH_ACCESSIBILITY 1
#endif
/** Enable perf counters */
#ifndef WITH_PERFCOUNTERS
#define WITH_PERFCOUNTERS 0
#endif
/**
* Whether we are compiling a PGO instrumented build.
*/
#ifndef ENABLE_PGO_PROFILE
#define ENABLE_PGO_PROFILE 0
#endif
/**
* Unreal Header Tool requires extra data stored in the structure of a few core files. This enables some ifdef hacks to make this work.
* Set via UBT,do not modify directly
*/
#ifndef HACK_HEADER_GENERATOR
#define HACK_HEADER_GENERATOR 0
#endif
/** Whether we are compiling with automation worker functionality. Note that automation worker defaults to enabled in
UE_BUILD_TEST configuration,so that it can be used for performance testing on devices */
#ifndef WITH_AUTOMATION_WORKER
#define WITH_AUTOMATION_WORKER !(UE_BUILD_SHIPPING || HACK_HEADER_GENERATOR)
#endif
/**
* Whether we want a monolithic build (no DLLs); must be defined by UBT
*/
#ifndef IS_MONOLITHIC
#define IS_MONOLITHIC 0 // for auto-complete
#error UBT should always define IS_MONOLITHIC to be 0 or 1
#endif
/**
* Whether we want a program (shadercompilerworker,fileserver) or a game; must be defined by UBT
*/
#ifndef IS_PROGRAM
#define IS_PROGRAM 0 // for autocomplete
#error UBT should always define IS_PROGRAM to be 0 or 1
#endif
/**
* Whether we support hot-reload. Currently requires a non-monolithic build and non-shipping configuration.
*/
#ifndef WITH_HOT_RELOAD
#define WITH_HOT_RELOAD (!IS_MONOLITHIC && !UE_BUILD_SHIPPING && !UE_BUILD_TEST && !UE_GAME && !UE_SERVER)
#endif
/**
* Whether we include support for text archive formats. disabling support allows de-virtualizing archive calls
* and eliminating string constants for field names.
*/
#ifndef WITH_TEXT_ARCHIVE_SUPPORT
#define WITH_TEXT_ARCHIVE_SUPPORT WITH_EDITORONLY_DATA
#endif
/*----------------------------------------------------------------------------
Optional bridge options coming from UBT,do not modify directly!
If UBT doesn't set the value,it is assumed to be 0,and we set that here.
----------------------------------------------------------------------------*/
/**
* Checks to see if pure virtual has actually been implemented,this is normally run as a CIS process and is set (indirectly) by UBT
*
* @see Core.h
* @see ObjectMacros.h
**/
#ifndef CHECK_PUREVIRTUALS
#define CHECK_PUREVIRTUALS 0
#endif
/** Whether to use the null RHI. */
#ifndef USE_NULL_RHI
#define USE_NULL_RHI 0
#endif
/** If not specified,disable logging in shipping */
#ifndef USE_LOGGING_IN_SHIPPING
#define USE_LOGGING_IN_SHIPPING 0
#endif
#ifndef USE_CHECKS_IN_SHIPPING
#define USE_CHECKS_IN_SHIPPING 0
#endif
/** If not defined follow the CHECK behavior since prevIoUsly ensures were compiled in with checks */
#ifndef USE_ENSURES_IN_SHIPPING
#define USE_ENSURES_IN_SHIPPING USE_CHECKS_IN_SHIPPING
#endif
#ifndef ALLOW_CONSOLE_IN_SHIPPING
#define ALLOW_CONSOLE_IN_SHIPPING 0
#endif
/** Compile flag to force stats to be compiled */
#ifndef FORCE_USE_STATS
#define FORCE_USE_STATS 0
#endif
/**
* Optionally enable support for named events from the stat macros without the stat system overhead
* This will attempt to disable regular stats system and use named events instead
*/
#ifndef ENABLE_STATNAMEDEVENTS
#define ENABLE_STATNAMEDEVENTS 0
#endif
#ifndef ENABLE_STATNAMEDEVENTS_UOBJECT
#define ENABLE_STATNAMEDEVENTS_UOBJECT 0
#endif
/*--------------------------------------------------------------------------------
Basic options that by default depend on the build configuration and platform
DO_GUARD_SLOW If true,then checkSlow,checkfSlow and verifySlow are compiled into the executable.
DO_CHECK If true,then checkCode,checkf,verify,check,checkNoEntry,checknoreentry,checknorecursion,verifyf,checkf are compiled into the executables
DO_ENSURE If true,then ensure,ensureAlways,ensureMsgf and ensureAlwaysMsgf are compiled into the executables
STATS If true,then the stats system is compiled into the executable.
ALLOW_DEBUG_FILES If true,then debug files like screen shots and profiles can be saved from the executable.
NO_LOGGING If true,then no logs or text output will be produced
--------------------------------------------------------------------------------*/
#if UE_BUILD_DEBUG
#ifndef DO_GUARD_SLOW
#define DO_GUARD_SLOW 1
#endif
#ifndef DO_CHECK
#define DO_CHECK 1
#endif
#ifndef DO_ENSURE
#define DO_ENSURE 1
#endif
#ifndef STATS
#define STATS ((WITH_UNREAL_DEVELOPER_TOOLS || !WITH_EDITORONLY_DATA || USE_STATS_WITHOUT_ENGINE || USE_MALLOC_PROFILER || FORCE_USE_STATS) && !ENABLE_STATNAMEDEVENTS)
#endif
#ifndef ALLOW_DEBUG_FILES
#define ALLOW_DEBUG_FILES 1
#endif
#ifndef ALLOW_CONSOLE
#define ALLOW_CONSOLE 1
#endif
#ifndef NO_LOGGING
#define NO_LOGGING 0
#endif
#elif UE_BUILD_DEVELOPMENT
#ifndef DO_GUARD_SLOW
#define DO_GUARD_SLOW 0
#endif
#ifndef DO_CHECK
#define DO_CHECK 1
#endif
#ifndef DO_ENSURE
#define DO_ENSURE 1
#endif
#ifndef STATS
#define STATS ((WITH_UNREAL_DEVELOPER_TOOLS || !WITH_EDITORONLY_DATA || USE_STATS_WITHOUT_ENGINE || USE_MALLOC_PROFILER || FORCE_USE_STATS) && !ENABLE_STATNAMEDEVENTS)
#endif
#ifndef ALLOW_DEBUG_FILES
#define ALLOW_DEBUG_FILES 1
#endif
#ifndef ALLOW_CONSOLE
#define ALLOW_CONSOLE 1
#endif
#ifndef NO_LOGGING
#define NO_LOGGING 0
#endif
#elif UE_BUILD_TEST
#ifndef DO_GUARD_SLOW
#define DO_GUARD_SLOW 0
#endif
#ifndef DO_CHECK
#define DO_CHECK USE_CHECKS_IN_SHIPPING
#endif
#ifndef DO_ENSURE
#define DO_ENSURE USE_ENSURES_IN_SHIPPING
#endif
#ifndef STATS
#define STATS ((USE_MALLOC_PROFILER || FORCE_USE_STATS) && !ENABLE_STATNAMEDEVENTS)
#endif
#ifndef ALLOW_DEBUG_FILES
#define ALLOW_DEBUG_FILES 1
#endif
#ifndef ALLOW_CONSOLE
#define ALLOW_CONSOLE 1
#endif
#ifndef NO_LOGGING
#define NO_LOGGING !USE_LOGGING_IN_SHIPPING
#endif
#elif UE_BUILD_SHIPPING
#if WITH_EDITOR
#ifndef DO_GUARD_SLOW
#define DO_GUARD_SLOW 0
#endif
#ifndef DO_CHECK
#define DO_CHECK 1
#endif
#ifndef DO_ENSURE
#define DO_ENSURE 1
#endif
#ifndef STATS
#define STATS 1
#endif
#ifndef ALLOW_DEBUG_FILES
#define ALLOW_DEBUG_FILES 1
#endif
#ifndef ALLOW_CONSOLE
#define ALLOW_CONSOLE 0
#endif
#ifndef NO_LOGGING
#define NO_LOGGING 0
#endif
#else
#ifndef DO_GUARD_SLOW
#define DO_GUARD_SLOW 0
#endif
#ifndef DO_CHECK
#define DO_CHECK USE_CHECKS_IN_SHIPPING
#endif
#ifndef DO_ENSURE
#define DO_ENSURE USE_ENSURES_IN_SHIPPING
#endif
#ifndef STATS
#define STATS (FORCE_USE_STATS && !ENABLE_STATNAMEDEVENTS)
#endif
#ifndef ALLOW_DEBUG_FILES
#define ALLOW_DEBUG_FILES 0
#endif
#ifndef ALLOW_CONSOLE
#define ALLOW_CONSOLE ALLOW_CONSOLE_IN_SHIPPING
#endif
#ifndef NO_LOGGING
#define NO_LOGGING !USE_LOGGING_IN_SHIPPING
#endif
#endif
#else
#error Exactly one of [UE_BUILD_DEBUG UE_BUILD_DEVELOPMENT UE_BUILD_TEST UE_BUILD_SHIPPING] should be defined to be 1
#endif
/**
* This is a global setting which will turn on logging / checks for things which are
* considered especially bad for consoles. Some of the checks are probably useful for PCs also.
*
* Throughout the code base there are specific things which dramatically affect performance and/or
* are good indicators that something is wrong with the content. These have PERF_ISSUE_FINDER in the
* comment near the define to turn the individual checks on.
*
* e.g. #if defined(PERF_LOG_DYNAMIC_LOAD_OBJECT) || LOOKING_FOR_PERF_ISSUES
*
* If one only cares about DLO,then one can enable the PERF_LOG_DYNAMIC_LOAD_OBJECT define. Or one can
* globally turn on all PERF_ISSUE_FINDERS :-)
*
**/
#ifndef LOOKING_FOR_PERF_ISSUES
#define LOOKING_FOR_PERF_ISSUES (0 && !(UE_BUILD_SHIPPING))
#endif
/** Enable the use of the network profiler as long as we are not a Shipping or Test build */
#ifndef USE_NETWORK_PROFILER
#define USE_NETWORK_PROFILER !(UE_BUILD_SHIPPING || UE_BUILD_TEST)
#endif
/** Enable UbergraphPersistentFrame feature. It can speed up BP compilation (re-instancing) in editor,but introduce an unnecessary overhead in runtime. */
#define USE_UBER_GRAPH_PERSISTENT_FRAME 1
/** Enable validation of the Uber Graph's persistent frame's layout,this is useful to detect uber graph frame related corruption */
#define VALIDATE_UBER_GRAPH_PERSISTENT_FRAME (!(UE_BUILD_SHIPPING || UE_BUILD_TEST)) && USE_UBER_GRAPH_PERSISTENT_FRAME
/** Enable fast calls for event thunks into an event graph that have no parameters */
#define UE_BLUEPRINT_EVENTGRAPH_FASTCALLS 1
/** Enable perf counters on dedicated servers */
#define USE_SERVER_PERF_COUNTERS ((UE_SERVER || UE_EDITOR) && WITH_PERFCOUNTERS)
#define USE_CIRculaR_DEPENDENCY_LOAD_DEFERRING 1
#define USE_DEFERRED_DEPENDENCY_CHECK_VERIFICATION_TESTS (USE_CIRculaR_DEPENDENCY_LOAD_DEFERRING && 0)
// 0 (default),set this to 1 to get draw events with "TOGGLEDRAWEVENTS" "r.ShowMaterialDrawEvents" and the "ProfileGPU" command working in test
#ifndef ALLOW_PROFILEGPU_IN_TEST
#define ALLOW_PROFILEGPU_IN_TEST 0
#endif
#ifndef ALLOW_PROFILEGPU_IN_SHIPPING
#define ALLOW_PROFILEGPU_IN_SHIPPING 0
#endif
// draw events with "TOGGLEDRAWEVENTS" "r.ShowMaterialDrawEvents" (for ProfileGPU,Pix,Razor,RenderDoc,...) and the "ProfileGPU" command are normally compiled out for TEST and SHIPPING
#define WITH_PROFILEGPU (!(UE_BUILD_SHIPPING || UE_BUILD_TEST) || (UE_BUILD_TEST && ALLOW_PROFILEGPU_IN_TEST) || (UE_BUILD_SHIPPING && ALLOW_PROFILEGPU_IN_SHIPPING))
#ifndef ALLOW_CHEAT_CVARS_IN_TEST
#define ALLOW_CHEAT_CVARS_IN_TEST 1
#endif
#define disABLE_CHEAT_CVARS (UE_BUILD_SHIPPING || (UE_BUILD_TEST && !ALLOW_CHEAT_CVARS_IN_TEST))
// Controls the creation of a thread for detecting hangs (FThreadHeartBeat). This is subject to other criteria,USE_HANG_DETECTION
#ifndef ALLOW_HANG_DETECTION
#define ALLOW_HANG_DETECTION 1
#endif
#define USE_HANG_DETECTION (ALLOW_HANG_DETECTION && !WITH_EDITORONLY_DATA && !IS_PROGRAM && !UE_BUILD_DEBUG && !ENABLE_PGO_PROFILE)
// Controls the creation of a thread for detecting hitches (FGameThreadHitchHeartBeat). This is subject to other criteria,USE_HITCH_DETECTION
#ifndef ALLOW_HITCH_DETECTION
#define ALLOW_HITCH_DETECTION 0
#endif
// Adjust a few things with the slack policy and MallocBinned2 to minimize memory usage (at some performance cost)
#ifndef AGGRESSIVE_MEMORY_SAVING
#define AGGRESSIVE_MEMORY_SAVING 0
#endif
// Controls if UObjects are initialized as soon as they are available or only after the module is "loaded". This only applies to monolithic builds; if there are DLLs,this is how it works anyway and this should not be turned on
#ifndef USE_PER_MODULE_UOBJECT_BOOTSTRAP
#define USE_PER_MODULE_UOBJECT_BOOTSTRAP 0
#endif
#define USE_HITCH_DETECTION (ALLOW_HITCH_DETECTION && !WITH_EDITORONLY_DATA && !IS_PROGRAM && !UE_BUILD_DEBUG)
// Controls whether shipping builds create backups of the most recent log file.
// All other configurations always create backups.
#ifndef PRESERVE_LOG_BACKUPS_IN_SHIPPING
#define PRESERVE_LOG_BACKUPS_IN_SHIPPING 1
#endif
#ifndef ENABLE_RHI_VALIDATION
#define ENABLE_RHI_VALIDATION (UE_BUILD_DEBUG || UE_BUILD_DEVELOPMENT)
#endif
// Controls whether FPlatformMisc::Getdeviceid() is available to be called.
// When set to 1,calls to this API will be hardcoded to return an empty string
// to avoid running afoul of calling device APIs that platform owners may restrict
// access to without waivers or special steps. Code that uses Getdeviceid() should
// expect to receive empty strings in these cases and response appropriately with
// fallback logic.
#ifndef GET_DEVICE_ID_UNAVAILABLE
#define GET_DEVICE_ID_UNAVAILABLE 0
#endif
当我手动将选项 UE_BUILD_DEVELOPMENT 更改为 1 时，第一个错误将被稍后定义的所有其他错误替换。例如In included file: UBT should always define WITH_EDITOR to be 0 or 1
我怀疑问题是，我使用 UBT 是错误的，但我不知道如何正确使用它。
UCLASS( ClassGroup=(Custom),Meta=(BlueprintSpawnableComponent) )
class BUILDINGESCAPE_API UOpenDoor : public UActorComponent
{
GENERATED_BODY()
public:
// Sets default values for this component's properties
UOpenDoor();
protected:
// Called when the game starts
virtual void BeginPlay() override;
public:
// Called every frame
virtual void TickComponent(float DeltaTime,ELevelTick TickType,FActorComponentTickFunction* ThisTickFunction) override;
//Door opening Function
virtual void OpenDoor(float DeltaTime);
//Door Closing Function
virtual void CloseDoor(float DeltaTime);
private:
//Member Variable deFinition
Frotator StartingRotation;
Frotator TargetRotation;
float DoorLastOpened = 0.f;
//Exposed parameters
UPROPERTY(EditAnywhere)
float OpenAngle = 90.f;
UPROPERTY(EditAnywhere)
float DoorDelay = 2.f;
UPROPERTY(EditAnywhere)
float OpenVeLocity = 2.f;
UPROPERTY(EditAnywhere)
float CloseVeLocity = 2.f;
UPROPERTY(EditAnywhere)
ATriggerVolume* Trigger;
UPROPERTY(EditAnywhere)
AActor* TriggerActor;
};
我收到错误 Variable has incomplete type 'class BUILDINGESCAPE_API'
因为我对 C++ 很陌生，所以我不知道从哪里开始。
任何帮助将不胜感激，因为这个问题已经让我疯狂了几个星期......
非常感谢！
解决方法
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