Disable Windows build

Summary:
Build is already broken because VS fails to locate
llvm-boltdiff when running tests, and VS also complains that
include/bolt/Passes/InstrumentationSummary.h is lacking an include
string header. Disable this until we have a Windows buildbot to make
sure this build is sane.

(cherry picked from FBD33039972)

bolt/CMakeLists.txt

@@ -4,77 +4,81 @@ set(BOLT_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
 set(BOLT_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
 set(CMAKE_CXX_STANDARD 14)
 
-set(BOLT_ENABLE_RUNTIME OFF)
+if (NOT CMAKE_HOST_SYSTEM_NAME MATCHES Linux)
-if (CMAKE_HOST_SYSTEM_PROCESSOR MATCHES "x86_64")
+  message(WARNING "Not building BOLT on unsupported platform")
-  set(BOLT_ENABLE_RUNTIME ON)
+else()
-endif()
+  set(BOLT_ENABLE_RUNTIME OFF)
+  if (CMAKE_HOST_SYSTEM_PROCESSOR MATCHES "x86_64")
+    set(BOLT_ENABLE_RUNTIME ON)
+  endif()
 
-set(BOLT_INCLUDE_TESTS OFF)
+  set(BOLT_INCLUDE_TESTS OFF)
-if (LLVM_INCLUDE_TESTS)
+  if (LLVM_INCLUDE_TESTS)
-  string(FIND "${LLVM_ENABLE_PROJECTS}" "clang" POSITION)
+    string(FIND "${LLVM_ENABLE_PROJECTS}" "clang" POSITION)
-  if (NOT ${POSITION} EQUAL -1)
-    string(FIND "${LLVM_ENABLE_PROJECTS}" "lld" POSITION)
     if (NOT ${POSITION} EQUAL -1)
-      set(BOLT_INCLUDE_TESTS ON)
+      string(FIND "${LLVM_ENABLE_PROJECTS}" "lld" POSITION)
+      if (NOT ${POSITION} EQUAL -1)
+        set(BOLT_INCLUDE_TESTS ON)
+      else()
+        message(WARNING "Not including BOLT tests since lld is disabled")
+      endif()
     else()
-      message(WARNING "Not including BOLT tests since lld is disabled")
+      message(WARNING "Not including BOLT tests since clang is disabled")
     endif()
-  else()
-    message(WARNING "Not including BOLT tests since clang is disabled")
   endif()
-endif()
 
-if (BOLT_ENABLE_RUNTIME)
+  if (BOLT_ENABLE_RUNTIME)
-  message(STATUS "Building BOLT runtime libraries for X86")
+    message(STATUS "Building BOLT runtime libraries for X86")
-  ExternalProject_Add(bolt_rt
+    ExternalProject_Add(bolt_rt
-    SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/runtime"
+      SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/runtime"
-    STAMP_DIR ${CMAKE_CURRENT_BINARY_DIR}/bolt_rt-stamps
+      STAMP_DIR ${CMAKE_CURRENT_BINARY_DIR}/bolt_rt-stamps
-    BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}/bolt_rt-bins
+      BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}/bolt_rt-bins
-    CMAKE_ARGS -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
+      CMAKE_ARGS -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
-               -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
+                 -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
-               -DCMAKE_BUILD_TYPE=Release
+                 -DCMAKE_BUILD_TYPE=Release
-               -DCMAKE_MAKE_PROGRAM=${CMAKE_MAKE_PROGRAM}
+                 -DCMAKE_MAKE_PROGRAM=${CMAKE_MAKE_PROGRAM}
-               -DCMAKE_INSTALL_PREFIX=${LLVM_BINARY_DIR}
+                 -DCMAKE_INSTALL_PREFIX=${LLVM_BINARY_DIR}
-    BUILD_ALWAYS True
+      BUILD_ALWAYS True
+      )
+    install(CODE "execute_process\(COMMAND \${CMAKE_COMMAND} -DCMAKE_INSTALL_PREFIX=\${CMAKE_INSTALL_PREFIX} -P ${CMAKE_CURRENT_BINARY_DIR}/bolt_rt-bins/cmake_install.cmake \)"
+      COMPONENT bolt_rt)
+    add_llvm_install_targets(install-bolt_rt
+      DEPENDS bolt_rt
+      COMPONENT bolt_rt)
+  endif()
+
+  # Get the current git revision for BOLT.
+  find_program(git_executable NAMES git git.exe git.cmd)
+  if (git_executable)
+    execute_process(COMMAND ${git_executable} rev-parse HEAD
+      WORKING_DIRECTORY ${LLVM_MAIN_SRC_DIR}
+      TIMEOUT 5
+      RESULT_VARIABLE git_result
+      OUTPUT_VARIABLE git_output)
+    if( git_result EQUAL 0 )
+      string(STRIP "${git_output}" git_ref_id)
+      set(BOLT_REVISION "${git_ref_id}")
+    endif()
+  endif()
+
+  # If we can't find a revision, set it to "<unknown>".
+  if (NOT BOLT_REVISION)
+    set(BOLT_REVISION "<unknown>")
+  endif()
+
+  configure_file(
+    ${CMAKE_CURRENT_SOURCE_DIR}/include/bolt/Utils/BoltRevision.inc.in
+    ${CMAKE_CURRENT_BINARY_DIR}/include/bolt/Utils/BoltRevision.inc)
+
+  include_directories(
+    ${CMAKE_CURRENT_SOURCE_DIR}/include
+    ${CMAKE_CURRENT_BINARY_DIR}/include
     )
-  install(CODE "execute_process\(COMMAND \${CMAKE_COMMAND} -DCMAKE_INSTALL_PREFIX=\${CMAKE_INSTALL_PREFIX} -P ${CMAKE_CURRENT_BINARY_DIR}/bolt_rt-bins/cmake_install.cmake \)"
-    COMPONENT bolt_rt)
-  add_llvm_install_targets(install-bolt_rt
-    DEPENDS bolt_rt
-    COMPONENT bolt_rt)
-endif()
 
-# Get the current git revision for BOLT.
+  add_subdirectory(lib)
-find_program(git_executable NAMES git git.exe git.cmd)
+  add_subdirectory(tools)
-if (git_executable)
+
-  execute_process(COMMAND ${git_executable} rev-parse HEAD
+  if (BOLT_INCLUDE_TESTS)
-    WORKING_DIRECTORY ${LLVM_MAIN_SRC_DIR}
+    add_subdirectory(test)
-    TIMEOUT 5
-    RESULT_VARIABLE git_result
-    OUTPUT_VARIABLE git_output)
-  if( git_result EQUAL 0 )
-    string(STRIP "${git_output}" git_ref_id)
-    set(BOLT_REVISION "${git_ref_id}")
   endif()
 endif()
-
-# If we can't find a revision, set it to "<unknown>".
-if (NOT BOLT_REVISION)
-  set(BOLT_REVISION "<unknown>")
-endif()
-
-configure_file(
-  ${CMAKE_CURRENT_SOURCE_DIR}/include/bolt/Utils/BoltRevision.inc.in
-  ${CMAKE_CURRENT_BINARY_DIR}/include/bolt/Utils/BoltRevision.inc)
-
-include_directories(
-  ${CMAKE_CURRENT_SOURCE_DIR}/include
-  ${CMAKE_CURRENT_BINARY_DIR}/include
-  )
-
-add_subdirectory(lib)
-add_subdirectory(tools)
-
-if (BOLT_INCLUDE_TESTS)
-  add_subdirectory(test)
-endif()