[llvm] [llvm] annotate interfaces in llvm/Target for DLL export (PR #143615)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-m68k-linux-cross` running on `suse-gary-m68k-cross` while building `llvm` at step 4 "build stage 1".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/27/builds/11708

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 4 (build stage 1) failure: 'ninja' (failure)
...
[1713/4879] Building CXX object tools/clang/lib/Basic/CMakeFiles/obj.clangBasic.dir/OpenCLOptions.cpp.o
[1714/4879] Building CXX object tools/clang/lib/Basic/CMakeFiles/obj.clangBasic.dir/TargetID.cpp.o
[1715/4879] Building CXX object lib/Transforms/Scalar/CMakeFiles/LLVMScalarOpts.dir/Reassociate.cpp.o
[1716/4879] Building CXX object tools/clang/lib/Basic/CMakeFiles/obj.clangBasic.dir/SourceMgrAdapter.cpp.o
[1717/4879] Building CXX object tools/clang/lib/Basic/CMakeFiles/obj.clangBasic.dir/SourceLocation.cpp.o
[1718/4879] Building CXX object lib/Transforms/Scalar/CMakeFiles/LLVMScalarOpts.dir/StructurizeCFG.cpp.o
[1719/4879] Building CXX object tools/clang/lib/Basic/CMakeFiles/obj.clangBasic.dir/Targets/ARC.cpp.o
[1720/4879] Building CXX object tools/clang/lib/Basic/CMakeFiles/obj.clangBasic.dir/Sanitizers.cpp.o
[1721/4879] Building CXX object tools/clang/lib/Basic/CMakeFiles/obj.clangBasic.dir/IdentifierTable.cpp.o
[1722/4879] Building CXX object lib/Frontend/OpenMP/CMakeFiles/LLVMFrontendOpenMP.dir/OMPIRBuilder.cpp.o
FAILED: lib/Frontend/OpenMP/CMakeFiles/LLVMFrontendOpenMP.dir/OMPIRBuilder.cpp.o 
/usr/bin/c++ -DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/stage1/lib/Frontend/OpenMP -I/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/lib/Frontend/OpenMP -I/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/stage1/include -I/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-maybe-uninitialized -Wno-nonnull -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -std=c++17  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -MD -MT lib/Frontend/OpenMP/CMakeFiles/LLVMFrontendOpenMP.dir/OMPIRBuilder.cpp.o -MF lib/Frontend/OpenMP/CMakeFiles/LLVMFrontendOpenMP.dir/OMPIRBuilder.cpp.o.d -o lib/Frontend/OpenMP/CMakeFiles/LLVMFrontendOpenMP.dir/OMPIRBuilder.cpp.o -c /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/lib/Frontend/OpenMP/OMPIRBuilder.cpp
In file included from /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/include/llvm/Support/ErrorHandling.h:17,
                 from /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/include/llvm/ADT/Hashing.h:50,
                 from /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/include/llvm/ADT/ArrayRef.h:12,
                 from /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/include/llvm/IR/IRBuilder.h:18,
                 from /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/include/llvm/Frontend/Atomic/Atomic.h:12,
                 from /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/include/llvm/Frontend/OpenMP/OMPIRBuilder.h:17,
                 from /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/lib/Frontend/OpenMP/OMPIRBuilder.cpp:15:
/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/include/llvm/Support/Compiler.h:120:43: error: standard attributes in middle of decl-specifiers
  120 | #define LLVM_ATTRIBUTE_VISIBILITY_DEFAULT [[gnu::visibility("default")]]
      |                                           ^
/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/include/llvm/Support/Compiler.h:213:18: note: in expansion of macro ‘LLVM_ATTRIBUTE_VISIBILITY_DEFAULT’
  213 | #define LLVM_ABI LLVM_ATTRIBUTE_VISIBILITY_DEFAULT
      |                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/include/llvm/Target/TargetMachine.h:32:8: note: in expansion of macro ‘LLVM_ABI’
   32 | extern LLVM_ABI llvm::cl::opt<bool> NoKernelInfoEndLTO;
      |        ^~~~~~~~
/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/include/llvm/Support/Compiler.h:120:43: note: standard attributes must precede the decl-specifiers to apply to the declaration, or follow them to apply to the type
  120 | #define LLVM_ATTRIBUTE_VISIBILITY_DEFAULT [[gnu::visibility("default")]]
      |                                           ^
/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/include/llvm/Support/Compiler.h:213:18: note: in expansion of macro ‘LLVM_ATTRIBUTE_VISIBILITY_DEFAULT’
  213 | #define LLVM_ABI LLVM_ATTRIBUTE_VISIBILITY_DEFAULT
      |                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/include/llvm/Target/TargetMachine.h:32:8: note: in expansion of macro ‘LLVM_ABI’
   32 | extern LLVM_ABI llvm::cl::opt<bool> NoKernelInfoEndLTO;
      |        ^~~~~~~~
/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/include/llvm/Support/Compiler.h:120:43: warning: attribute ignored [-Wattributes]
  120 | #define LLVM_ATTRIBUTE_VISIBILITY_DEFAULT [[gnu::visibility("default")]]
      |                                           ^
/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/include/llvm/Support/Compiler.h:213:18: note: in expansion of macro ‘LLVM_ATTRIBUTE_VISIBILITY_DEFAULT’
  213 | #define LLVM_ABI LLVM_ATTRIBUTE_VISIBILITY_DEFAULT
      |                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/include/llvm/Target/TargetMachine.h:32:8: note: in expansion of macro ‘LLVM_ABI’
   32 | extern LLVM_ABI llvm::cl::opt<bool> NoKernelInfoEndLTO;
      |        ^~~~~~~~
/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/include/llvm/Support/Compiler.h:120:43: note: an attribute that appertains to a type-specifier is ignored
  120 | #define LLVM_ATTRIBUTE_VISIBILITY_DEFAULT [[gnu::visibility("default")]]
      |                                           ^

```

</details>

https://github.com/llvm/llvm-project/pull/143615