[cmake] install clang-tblgen

[axw]

Summary

Install clang-tblgen into <install>/bin in the
CMake build, as is done in the autoconf build.

[axw]

Ping?

[pcc]

clang-tblgen is an internal tool used by the Clang build system. I do not understand why it needs to be installed. If the autoconf build is installing it, then maybe it shouldn't.

[axw]

In D10916#206931, @pcc wrote:

clang-tblgen is an internal tool used by the Clang build system. I do not understand why it needs to be installed. If the autoconf build is installing it, then maybe it shouldn't.

I had wondered; I've never used tblgen. I'm just trying to get CMake packaging for Debian working; I'll suggest that clang-tblgen should be removed from packaged binaries.

utils/TableGen/CMakeLists.txt

 set(LLVM_LINK_COMPONENTS Support)
 
 add_tablegen(clang-tblgen CLANG
   ClangASTNodesEmitter.cpp
   ClangAttrEmitter.cpp
   ClangCommentCommandInfoEmitter.cpp
   ClangCommentHTMLNamedCharacterReferenceEmitter.cpp
   ClangCommentHTMLTagsEmitter.cpp
   ClangDiagnosticsEmitter.cpp
   ClangSACheckersEmitter.cpp
   NeonEmitter.cpp
   TableGen.cpp
   )
+
+if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
+    install(TARGETS clang-tblgen
+      EXPORT ClangTargets
+            RUNTIME DESTINATION bin)
+endif()
+set_property(GLOBAL APPEND PROPERTY CLANG_EXPORTS clang-tblgen)
+
+