From 25f1a6ed16db75b5ba53cc42c23364c693ca4096 Mon Sep 17 00:00:00 2001
From: NAKAMURA Takumi <geek4civic@gmail.com>
Date: Thu, 11 May 2017 13:19:24 +0000
Subject: [PATCH] Fix two-stage build on windows using DistributionExample
 cmake cache

Thanks to Matthew Larionov <matthewtff@gmail.com>

llvm-svn: 302795
---
 clang/CMakeLists.txt                         | 13 ++++++++++---
 clang/cmake/caches/DistributionExample.cmake | 13 ++++++++++---
 2 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/clang/CMakeLists.txt b/clang/CMakeLists.txt
index ca696b1..9e43a10 100644
--- a/clang/CMakeLists.txt
+++ b/clang/CMakeLists.txt
@@ -579,10 +579,17 @@ if (CLANG_ENABLE_BOOTSTRAP)
     add_dependencies(clang-bootstrap-deps compiler-rt)
   endif()
 
+  set(C_COMPILER "clang")
+  set(CXX_COMPILER "clang++")
+  if(WIN32)
+    set(C_COMPILER "clang-cl.exe")
+    set(CXX_COMPILER "clang-cl.exe")
+  endif()
+
   set(COMPILER_OPTIONS
-    -DCMAKE_CXX_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/clang++
-    -DCMAKE_C_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/clang
-    -DCMAKE_ASM_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/clang)
+    -DCMAKE_CXX_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/${CXX_COMPILER}
+    -DCMAKE_C_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/${C_COMPILER}
+    -DCMAKE_ASM_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/${C_COMPILER})
 
   if(BOOTSTRAP_LLVM_BUILD_INSTRUMENTED)
     add_dependencies(clang-bootstrap-deps llvm-profdata)
diff --git a/clang/cmake/caches/DistributionExample.cmake b/clang/cmake/caches/DistributionExample.cmake
index 862f547..551f4ee 100644
--- a/clang/cmake/caches/DistributionExample.cmake
+++ b/clang/cmake/caches/DistributionExample.cmake
@@ -29,6 +29,13 @@ set(CLANG_BOOTSTRAP_TARGETS
 
 # Setup the bootstrap build.
 set(CLANG_ENABLE_BOOTSTRAP ON CACHE BOOL "")
-set(CLANG_BOOTSTRAP_CMAKE_ARGS
-  -C ${CMAKE_CURRENT_LIST_DIR}/DistributionExample-stage2.cmake
-  CACHE STRING "")
+
+if(STAGE2_CACHE_FILE)
+  set(CLANG_BOOTSTRAP_CMAKE_ARGS
+    -C ${STAGE2_CACHE_FILE}
+    CACHE STRING "")
+else()
+  set(CLANG_BOOTSTRAP_CMAKE_ARGS
+    -C ${CMAKE_CURRENT_LIST_DIR}/DistributionExample-stage2.cmake
+    CACHE STRING "")
+endif()
-- 
2.7.4