cmake: fix the compiler-rt build with MSVC

This sets flags and excludes things that aren't working with MSVC yet,
allowing us to build the ASan runtime as part of the cmake build.

Differential Revision: http://llvm-reviews.chandlerc.com/D1525

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@189304 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 91 insertions, 42 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 21fdf2951..67cc51ed9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -47,8 +47,13 @@ if (NOT CMAKE_SIZEOF_VOID_P EQUAL 4 AND
     NOT CMAKE_SIZEOF_VOID_P EQUAL 8)
   message(FATAL_ERROR "Please use architecture with 4 or 8 byte pointers.")
 endif()
-set(TARGET_64_BIT_CFLAGS "-m64")
-set(TARGET_32_BIT_CFLAGS "-m32")
+if (NOT MSVC)
+  set(TARGET_64_BIT_CFLAGS "-m64")
+  set(TARGET_32_BIT_CFLAGS "-m32")
+else()
+  set(TARGET_64_BIT_CFLAGS "")
+  set(TARGET_32_BIT_CFLAGS "")
+endif()
 
 # List of architectures we can target.
 set(COMPILER_RT_SUPPORTED_ARCH)
@@ -83,7 +88,9 @@ macro(test_target_arch arch)
 endmacro()
 
 if("${LLVM_NATIVE_ARCH}" STREQUAL "X86")
-  test_target_arch(x86_64 ${TARGET_64_BIT_CFLAGS})
+  if (NOT MSVC)
+    test_target_arch(x86_64 ${TARGET_64_BIT_CFLAGS})
+  endif()
   test_target_arch(i386 ${TARGET_32_BIT_CFLAGS})
 elseif("${LLVM_NATIVE_ARCH}" STREQUAL "PowerPC")
   test_target_arch(powerpc64 ${TARGET_64_BIT_CFLAGS})
@@ -114,25 +121,34 @@ function(filter_available_targets out_var)
 endfunction()
 
 # Provide some common commmandline flags for Sanitizer runtimes.
-set(SANITIZER_COMMON_CFLAGS
-  -fPIC
-  -fno-builtin
-  -fno-exceptions
-  -fomit-frame-pointer
-  -funwind-tables
-  -fno-stack-protector
-  -Wno-gnu  # Variadic macros with 0 arguments for ...
-  -O3
-  )
-if(NOT WIN32)
-  list(APPEND SANITIZER_COMMON_CFLAGS -fvisibility=hidden)
-endif()
-# Build sanitizer runtimes with debug info.
-check_cxx_compiler_flag(-gline-tables-only SUPPORTS_GLINE_TABLES_ONLY_FLAG)
-if(SUPPORTS_GLINE_TABLES_ONLY_FLAG)
-  list(APPEND SANITIZER_COMMON_CFLAGS -gline-tables-only)
+if (NOT MSVC)
+  set(SANITIZER_COMMON_CFLAGS
+    -fPIC
+    -fno-builtin
+    -fno-exceptions
+    -fomit-frame-pointer
+    -funwind-tables
+    -fno-stack-protector
+    -Wno-gnu  # Variadic macros with 0 arguments for ...
+    -O3
+    -fvisibility=hidden
+    )
 else()
-  list(APPEND SANITIZER_COMMON_CFLAGS -g)
+  set(SANITIZER_COMMON_CFLAGS
+    /MT
+    /Zi
+    /GS-
+    /wd4722
+    )
+endif()
+# Build sanitizer runtimes with debug info. (MSVC gets /Zi above)
+if (NOT MSVC)
+  check_cxx_compiler_flag(-gline-tables-only SUPPORTS_GLINE_TABLES_ONLY_FLAG)
+  if(SUPPORTS_GLINE_TABLES_ONLY_FLAG)
+    list(APPEND SANITIZER_COMMON_CFLAGS -gline-tables-only)
+  else()
+    list(APPEND SANITIZER_COMMON_CFLAGS -g)
+  endif()
 endif()
 # Warnings suppressions.
 check_cxx_compiler_flag(-Wno-variadic-macros SUPPORTS_NO_VARIADIC_MACROS_FLAG)
diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index bc3a2574d..fbc6198d9 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -1,12 +1,12 @@
 # First, add the subdirectories which contain feature-based runtime libraries
 # and several convenience helper libraries.
-if(CMAKE_SYSTEM_NAME MATCHES "Darwin|Linux")
+if(CMAKE_SYSTEM_NAME MATCHES "Darwin|Linux|Windows")
   # AddressSanitizer is supported on Linux and Mac OS X.
-  # Windows support is work in progress.
+  # Windows support is experimental.
   add_subdirectory(asan)
   add_subdirectory(interception)
   add_subdirectory(sanitizer_common)
-  if(NOT ANDROID)
+  if(NOT ANDROID AND NOT MSVC)
     add_subdirectory(lsan)
     add_subdirectory(profile)
     add_subdirectory(ubsan)
@@ -182,13 +182,15 @@ set(i386_SOURCES
   i386/umoddi3.S
   ${GENERIC_SOURCES})
 
-foreach(arch x86_64 i386)
-  if(CAN_TARGET_${arch})
-    add_compiler_rt_static_runtime(clang_rt.${arch} ${arch}
-      SOURCES ${${arch}_SOURCES}
-      CFLAGS "-std=c99")
-  endif()
-endforeach()
+if (NOT MSVC)
+  foreach(arch x86_64 i386)
+    if(CAN_TARGET_${arch})
+      add_compiler_rt_static_runtime(clang_rt.${arch} ${arch}
+        SOURCES ${${arch}_SOURCES}
+        CFLAGS "-std=c99")
+    endif()
+  endforeach()
+endif()
 
 # Generate configs for running lit and unit tests.
 configure_lit_site_cfg(
diff --git a/lib/asan/CMakeLists.txt b/lib/asan/CMakeLists.txt
index 064ba1f58..fe14cc3df 100644
--- a/lib/asan/CMakeLists.txt
+++ b/lib/asan/CMakeLists.txt
@@ -26,9 +26,15 @@ set(ASAN_DYLIB_SOURCES
 
 include_directories(..)
 
-set(ASAN_CFLAGS
-  ${SANITIZER_COMMON_CFLAGS}
-  -fno-rtti)
+if (NOT MSVC)
+  set(ASAN_CFLAGS
+    ${SANITIZER_COMMON_CFLAGS}
+    -fno-rtti)
+else()
+  set(ASAN_CFLAGS
+    ${SANITIZER_COMMON_CFLAGS}
+    /GR-)
+endif()
 
 set(ASAN_COMMON_DEFINITIONS
   ASAN_HAS_EXCEPTIONS=1)
@@ -38,6 +44,10 @@ if(ANDROID)
     ASAN_FLEXIBLE_MAPPING_AND_OFFSET=0
     ASAN_NEEDS_SEGV=0
     ASAN_LOW_MEMORY=1)
+elseif(MSVC)
+  list(APPEND ASAN_COMMON_DEFINITIONS
+    ASAN_FLEXIBLE_MAPPING_AND_OFFSET=0
+    ASAN_NEEDS_SEGV=0)
 else()
   list(APPEND ASAN_COMMON_DEFINITIONS
     ASAN_FLEXIBLE_MAPPING_AND_OFFSET=1
@@ -78,17 +88,32 @@ elseif(ANDROID)
   list(APPEND ASAN_RUNTIME_LIBRARIES clang_rt.asan-arm-android)
 else()
   # Otherwise, build separate libraries for each target.
+
   foreach(arch ${ASAN_SUPPORTED_ARCH})
+    set(ASAN_SOURCE_LIBS
+      $<TARGET_OBJECTS:RTInterception.${arch}>
+      $<TARGET_OBJECTS:RTSanitizerCommon.${arch}>
+      $<TARGET_OBJECTS:RTSanitizerCommonLibc.${arch}>)
+    if (NOT MSVC)
+      # We can't build Leak Sanitizer on Windows yet.
+      list(APPEND ASAN_SOURCE_LIBS $<TARGET_OBJECTS:RTLSanCommon.${arch}>)
+    endif()
+
     add_compiler_rt_static_runtime(clang_rt.asan-${arch} ${arch}
-      SOURCES ${ASAN_SOURCES}
-              $<TARGET_OBJECTS:RTInterception.${arch}>
-              $<TARGET_OBJECTS:RTSanitizerCommon.${arch}>
-              $<TARGET_OBJECTS:RTSanitizerCommonLibc.${arch}>
-              $<TARGET_OBJECTS:RTLSanCommon.${arch}>
+      SOURCES ${ASAN_SOURCES} ${ASAN_SOURCE_LIBS}
       CFLAGS ${ASAN_CFLAGS}
       DEFS ${ASAN_COMMON_DEFINITIONS}
       SYMS asan.syms)
     list(APPEND ASAN_RUNTIME_LIBRARIES clang_rt.asan-${arch})
+
+    if (WIN32)
+      add_compiler_rt_static_runtime(clang_rt.asan_dll_thunk-${arch} ${arch}
+      SOURCES asan_dll_thunk.cc
+      CFLAGS ${ASAN_CFLAGS} -DASAN_DLL_THUNK
+      DEFS ${ASAN_COMMON_DEFINITIONS}
+      SYMS asan.syms)
+      list(APPEND ASAN_RUNTIME_LIBRARIES clang_rt.asan_dll_thunk-${arch})
+    endif()
   endforeach()
 endif()
 
diff --git a/lib/sanitizer_common/CMakeLists.txt b/lib/sanitizer_common/CMakeLists.txt
index 8141ae684..3b4ce2217 100644
--- a/lib/sanitizer_common/CMakeLists.txt
+++ b/lib/sanitizer_common/CMakeLists.txt
@@ -61,9 +61,15 @@ set(SANITIZER_HEADERS
   sanitizer_symbolizer.h
   sanitizer_thread_registry.h)
 
-set(SANITIZER_CFLAGS
-  ${SANITIZER_COMMON_CFLAGS}
-  -fno-rtti)
+if (NOT MSVC)
+  set(SANITIZER_CFLAGS
+    ${SANITIZER_COMMON_CFLAGS}
+    -fno-rtti)
+else()
+  set(SANITIZER_CFLAGS
+    ${SANITIZER_COMMON_CFLAGS}
+    /GR-)
+endif()
 
 set(SANITIZER_RUNTIME_LIBRARIES)
 if(APPLE)