llvm-project/lld/Common/CMakeLists.txt
Archibald Elliott f09cf34d00 [Support] Move TargetParsers to new component
This is a fairly large changeset, but it can be broken into a few
pieces:
- `llvm/Support/*TargetParser*` are all moved from the LLVM Support
  component into a new LLVM Component called "TargetParser". This
  potentially enables using tablegen to maintain this information, as
  is shown in https://reviews.llvm.org/D137517. This cannot currently
  be done, as llvm-tblgen relies on LLVM's Support component.
- This also moves two files from Support which use and depend on
  information in the TargetParser:
  - `llvm/Support/Host.{h,cpp}` which contains functions for inspecting
    the current Host machine for info about it, primarily to support
    getting the host triple, but also for `-mcpu=native` support in e.g.
    Clang. This is fairly tightly intertwined with the information in
    `X86TargetParser.h`, so keeping them in the same component makes
    sense.
  - `llvm/ADT/Triple.h` and `llvm/Support/Triple.cpp`, which contains
    the target triple parser and representation. This is very intertwined
    with the Arm target parser, because the arm architecture version
    appears in canonical triples on arm platforms.
- I moved the relevant unittests to their own directory.

And so, we end up with a single component that has all the information
about the following, which to me seems like a unified component:
- Triples that LLVM Knows about
- Architecture names and CPUs that LLVM knows about
- CPU detection logic for LLVM

Given this, I have also moved `RISCVISAInfo.h` into this component, as
it seems to me to be part of that same set of functionality.

If you get link errors in your components after this patch, you likely
need to add TargetParser into LLVM_LINK_COMPONENTS in CMake.

Differential Revision: https://reviews.llvm.org/D137838
2022-12-20 11:05:50 +00:00

58 lines
1.2 KiB
CMake

find_first_existing_vc_file("${LLVM_MAIN_SRC_DIR}" llvm_vc)
find_first_existing_vc_file("${LLD_SOURCE_DIR}" lld_vc)
set(version_inc "${CMAKE_CURRENT_BINARY_DIR}/VCSVersion.inc")
set(generate_vcs_version_script "${LLVM_CMAKE_DIR}/GenerateVersionFromVCS.cmake")
if(lld_vc AND LLVM_APPEND_VC_REV)
set(lld_source_dir ${LLD_SOURCE_DIR})
endif()
add_custom_command(OUTPUT "${version_inc}"
DEPENDS "${lld_vc}" "${generate_vcs_version_script}"
COMMAND ${CMAKE_COMMAND} "-DNAMES=LLD"
"-DLLD_SOURCE_DIR=${lld_source_dir}"
"-DHEADER_FILE=${version_inc}"
-P "${generate_vcs_version_script}")
# Mark the generated header as being generated.
set_source_files_properties("${version_inc}"
PROPERTIES GENERATED TRUE
HEADER_FILE_ONLY TRUE)
add_lld_library(lldCommon
Args.cpp
CommonLinkerContext.cpp
DWARF.cpp
ErrorHandler.cpp
Filesystem.cpp
Memory.cpp
Reproduce.cpp
Strings.cpp
TargetOptionsCommandFlags.cpp
Timer.cpp
VCSVersion.inc
Version.cpp
ADDITIONAL_HEADER_DIRS
${LLD_INCLUDE_DIR}/lld/Common
LINK_COMPONENTS
Codegen
Core
DebugInfoDWARF
Demangle
MC
Option
Support
Target
TargetParser
LINK_LIBS
${LLVM_PTHREAD_LIB}
${LLVM_ATOMIC_LIB}
DEPENDS
intrinsics_gen
)