MSVC fixes

CMake/README.md

@@ -43,6 +43,11 @@
 
       set(CMAKE_CXX_FLAGS "-std=c++11 -stdlib=libc++ ${CMAKE_CXX_FLAGS}")
 
+      if (MSVC)
+        add_compile_options(/wd4005 /wd4068 /wd4244 /wd4267 /wd4800)
+        add_definitions(/DNOMINMAX /DWIN32_LEAN_AND_MEAN=1 /D_CRT_SECURE_NO_WARNINGS)
+      endif()
+
       add_subdirectory(googletest)
       add_subdirectory(cctz)
       add_subdirectory(abseil-cpp)
@@ -51,7 +56,7 @@
       target_link_libraries(my_exe absl::base absl::synchronization absl::strings)
 
 
-You will need to create your own CMake files for cctz until https://github.com/google/cctz/pull/54 lands.  As of this writing, that pull request requires -DBUILD_TESTING=OFF as it doesn't correctly export cctz's dependency on Google Benchmark.
+As of this writing, that pull request requires -DBUILD_TESTING=OFF as it doesn't correctly export cctz's dependency on Google Benchmark.
 
     You will find here a non exhaustive list of absl public targets
 

CMakeLists.txt

@@ -26,7 +26,12 @@ include(AbseilHelpers)
 
 
 # config options
+if (MSVC)
+  add_definitions(/DNOMINMAX /DWIN32_LEAN_AND_MEAN=1 /D_CRT_SECURE_NO_WARNINGS)
+  add_compile_options(/W3 /WX /wd4005 /wd4068 /wd4244 /wd4267 /wd4800)
+else()
   set(ABSL_STD_CXX_FLAG "-std=c++11" CACHE STRING "c++ std flag (default: c++11)")
+endif()
 
 
 
@@ -66,9 +71,6 @@ check_target(gmock)
 # -fexceptions
 set(ABSL_EXCEPTIONS_FLAG "${CMAKE_CXX_EXCEPTIONS}")
 
-# fix stuff
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FIX_MSVC} ${CMAKE_CXX_FLAGS}")
-
 list(APPEND ABSL_TEST_COMMON_LIBRARIES
   gtest_main
   gtest

absl/copts.bzl

@@ -103,7 +103,9 @@ MSVC_FLAGS = [
     "/wd4244",  # conversion from 'type1' to 'type2', possible loss of data
     "/wd4267",  # conversion from 'size_t' to 'type', possible loss of data
     "/wd4800",  # forcing value to bool 'true' or 'false' (performance warning)
+    "/DNOMINMAX",  # Don't define min and max macros (windows.h)
     "/DWIN32_LEAN_AND_MEAN",  # Don't bloat namespace with incompatible winsock versions.
+    "/D_CRT_SECURE_NO_WARNINGS",  # Don't warn about usage of insecure C functions
 ]
 
 MSVC_TEST_FLAGS = [

absl/time/clock.cc

@@ -510,7 +510,7 @@ namespace {
 // Returns the maximum duration that SleepOnce() can sleep for.
 constexpr absl::Duration MaxSleep() {
 #ifdef _WIN32
-  // Windows _sleep() takes unsigned long argument in milliseconds.
+  // Windows Sleep() takes unsigned long argument in milliseconds.
   return absl::Milliseconds(
       std::numeric_limits<unsigned long>::max());  // NOLINT(runtime/int)
 #else
@@ -522,7 +522,7 @@ constexpr absl::Duration MaxSleep() {
 // REQUIRES: to_sleep <= MaxSleep().
 void SleepOnce(absl::Duration to_sleep) {
 #ifdef _WIN32
-  _sleep(to_sleep / absl::Milliseconds(1));
+  Sleep(to_sleep / absl::Milliseconds(1));
 #else
   struct timespec sleep_time = absl::ToTimespec(to_sleep);
   while (nanosleep(&sleep_time, &sleep_time) != 0 && errno == EINTR) {