[CMake] Support overriding binary install directory

This patch adds a new option LLVM_TOOLS_INSTALL_DIR which allows customizing the location executables and symlinks get installed to. This adds the functionality provided by autoconf's --bindir flag.

This patch is based on patches from and collaboration with Tony Kelman, and replaces http://reviews.llvm.org/D20934.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272200 91177308-0d34-0410-b5e6-96231b3b80d8

CMakeLists.txt

@@ -201,6 +201,9 @@ endif()
 
 set(LLVM_LIBDIR_SUFFIX "" CACHE STRING "Define suffix of library directory name (32/64)" )
 
+set(LLVM_TOOLS_INSTALL_DIR "bin" CACHE STRING "Path for binary subdirectory (defaults to 'bin')")
+mark_as_advanced(LLVM_TOOLS_INSTALL_DIR)
+
 # They are used as destination of target generators.
 set(LLVM_RUNTIME_OUTPUT_INTDIR ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/bin)
 set(LLVM_LIBRARY_OUTPUT_INTDIR ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib${LLVM_LIBDIR_SUFFIX})

cmake/modules/AddLLVM.cmake

@@ -771,7 +771,7 @@ macro(add_llvm_tool name)
     if( LLVM_BUILD_TOOLS )
       install(TARGETS ${name}
               EXPORT LLVMExports
-              RUNTIME DESTINATION bin
+              RUNTIME DESTINATION ${LLVM_TOOLS_INSTALL_DIR}
               COMPONENT ${name})
 
       if (NOT CMAKE_CONFIGURATION_TYPES)
@@ -1211,7 +1211,7 @@ function(llvm_install_symlink name dest)
   set(full_dest ${dest}${CMAKE_EXECUTABLE_SUFFIX})
 
   install(SCRIPT ${INSTALL_SYMLINK}
-          CODE "install_symlink(${full_name} ${full_dest} bin)"
+          CODE "install_symlink(${full_name} ${full_dest} ${LLVM_TOOLS_INSTALL_DIR})"
           COMPONENT ${component})
 
   if (NOT CMAKE_CONFIGURATION_TYPES AND NOT ARG_ALWAYS_GENERATE)

cmake/modules/TableGen.cmake

@@ -141,7 +141,7 @@ macro(add_tablegen target project)
   if (${project} STREQUAL LLVM AND NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
     install(TARGETS ${target}
             EXPORT LLVMExports
-            RUNTIME DESTINATION bin)
+            RUNTIME DESTINATION ${LLVM_TOOLS_INSTALL_DIR})
   endif()
   set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS ${target})
 endmacro()