* Added support for additional response files (will be used by header units)
* Added support for shared response files and changed so normal cpp/h build path uses it if toolchain supports it.
* Enabled shared response files on all platforms but android (which doesnt seem to support reponse files including response files)
* Some cleanup in the iwyu toolchain related to shared rsp files
#preflight 63d9af169b3bb6a66cec9a8e
#rb joe.kirchoff
[CL 23943501 by henrik karlsson in ue5-main branch]
- Creates the UnrealArchitectures class, which wraps a list of UnrealArch objects
- UnrealArch is a single architecture, expandable enum-like struct
- There is no more concept of "no/default architecture", there is always a valid active architecture when building
- Most uses of "string Architecture" are replaced with one of the two above, depending if multiple architectures are supported or not
- UnrealArch has some platform-extensions for platform-specific naming (like Linux adds in LinuxName that turns, for instance, Arm64 -> aarch64-unknown-linux-gnueabi, which is used in folder names, etc)
- UnrealArch has bIsX64 which can be used determine intel instruction set (as opposed to arm)
- TargetRules class has an "Architecture" accessor that will return a single architecture if the active architectures is a single architecture, or throw an exception if multiple. This is useful in a majority of the cases where a paltform can only have a single architecture active in TargetRules (microsoft platforms, for instance, will create separate targets when compiling multiple architectures at once)
- Added UnrealArchitectureConfig class, which contains all the architecture information for a platform (what architectures are supported, what ones are currently active for given project, etc)
#preflight 63c81fb5b065224750a1759e
#rb mike.fricker,roman.dzieciol,joe.kirchoff,dmytro.vovk,brandon.schaefer [various parts]
#p4v-preflight-copy 23562471
[CL 23829977 by josh adams in ue5-main branch]
Requires implementing IComparable\IEquatable in FileItem (and I also implemented them in DirectoryItem for consistency)
#rnx
#rb Tim.Smith
#preflight 63c1cce4a06ab115ea17ba4f
#preflight 63c70f4d7763631ba15486ea
[CL 23745743 by Joe Kirchoff in ue5-main branch]
- Changed -arm64 and -x64 to arm64 and x64
- Removed the Arches array and other multi-architecture stuff from Adnroid compiling and linking, and using the higher level UEToolchain functionality to handle multi-architecture
- AndroidToolchain is now a proper ClangToolchain subclass instead of overriding everything it did (being a proper ISPCToolchain subclass coming later)
- Updated some of the UEToolchain side stuff (Android is the first platform to need separate Link output, but still need a single Target)
- All the architecture stuff is driven by UEBuildAndroid, not AndroidToolchain, so the make-a-temp-toolchain object just to get architectures was removed
- Removed unused stuff like bAllowMissingNDK, bExecuteCompilerThroughShell, Arches/GPUArches arrays
- Added a high-levle ConvertToPlatformArchitecture() function that UBT can use to turn "x86_64" into the achitecture that Android wants of "x64"
#rb chris.babcock
#preflight 63bdb04271079a8d1c2ef110
[CL 23634002 by Josh Adams in ue5-main branch]
#preflight 63b859fc68068a8bd62e9d32
#rb jeff.roberts
#rb fabian.giesen
#rb halfdan.ingvarsson
Tried to run automation tests but it's basically a red board right now. I ran two, one with these changes and one without, and they seem to be basically the same errors, however there are so many and I can't really cross compare easily.
base automation tests: 63b8a5dcaf3ebedd990b7dfe
preflight automation tests: 63b87801221aab21e08d5973
#preflight 63bc93e9577437afe6fbe45a
[CL 23621334 by Dan Thompson in ue5-main branch]
- Mac changes to compile separately, but link together (with lipo) after making two .dylibs/executables
- Removed FixDylibDependencies on Mac by making "stub dylibs" to mimic what Windows does with import libs, to solve circular dependencies
- Added DependenciesToSkipByArchitecture to ModuleRules that is used, when making a new single-arch LinkEnvironment from a multi-arch LinkEnvironment, to strip out libraries, etc, that should not be included with that single architecture
#preflight 6387891b4004f73f623c85a0
#rb zack.neyland
[CL 23336522 by Josh Adams in ue5-main branch]
#rb Chris.Babcock
#jira UE-131966
#ushell-cherrypick of 21441862 by dmytro.vovk
#preflight 62fe4c78200ff87e07be431f
[CL 21442825 by dmytro vovk in ue5-main branch]
