Create cmake install targets for lit, FileCheck, etc. when a defaulted-to-off flag is enabled.

[jroelofs]

Summary

These tools are useful on their own right for other projects... Let's make it slightly easier to get them installed.

[• ddunbar]

My strong preference is that anyone wanting to use lit in another project
install it via PyPi, which is simpler anyway. No opinion on the other tools
though.

• Daniel

[jroelofs]

@ddunbar, out of curiosity, why do you prefer that over the one that ships with llvm releases?

[• ddunbar]

I think that the installation process is simpler (easy_install lit or
pip install lit on many a modern system, vs installing or checkout of
LLVM), and more appropriate for people who want lit as a standalone project.

• Daniel

CMakeLists.txt

 set(LLVM_VERSION_PATCH 0)
 
 if (NOT PACKAGE_VERSION)
   set(PACKAGE_VERSION "${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH}svn")
 endif()
 
 option(LLVM_INSTALL_TOOLCHAIN_ONLY "Only include toolchain files in the 'install' target." OFF)
 
+option(LLVM_INSTALL_UTILITIES "Include utilities in the 'install' target." OFF)
+
 option(LLVM_USE_FOLDERS "Enable solution folders in Visual Studio. Disable for Express versions." ON)
 if ( LLVM_USE_FOLDERS )
   set_property(GLOBAL PROPERTY USE_FOLDERS ON)
 endif()
 
 include(VersionFromVCS)
 
 option(LLVM_APPEND_VC_REV

cmake/modules/AddLLVM.cmake

if( LLVM_BUILD_EXAMPLES )
     install(TARGETS ${name} RUNTIME DESTINATION examples)
   endif()
   set_target_properties(${name} PROPERTIES FOLDER "Examples")
 endmacro(add_llvm_example name)
 
 
 macro(add_llvm_utility name)
   add_llvm_executable(${name} ${ARGN})
+  if( LLVM_INSTALL_UTILITIES )
+    install(TARGETS ${name} RUNTIME DESTINATION bin)
+  endif()
   set_target_properties(${name} PROPERTIES FOLDER "Utils")
 endmacro(add_llvm_utility name)
 
 
 macro(add_llvm_target target_name)
   include_directories(BEFORE
     ${CMAKE_CURRENT_BINARY_DIR}
     ${CMAKE_CURRENT_SOURCE_DIR})

utils/lit/CMakeLists.txt

+if(LLVM_INSTALL_UTILITIES)
+  install(CODE "execute_process(COMMAND python
+                                ${CMAKE_CURRENT_SOURCE_DIR}/setup.py
+                                install -f)")
+endif()