Define _USE_MATH_DEFINES for windows builds.

PiperOrigin-RevId: 286642121
Change-Id: I8ec228fd768df5b20a11cdc63fcf219d6ab24de7

.bazelrc

@@ -238,6 +238,10 @@ build:linux --copt=-w
 build:macos --copt=-w
 build:windows --copt=/w
 
+# Tensorflow uses M_* math constants that only get defined by MSVC headers if
+# _USE_MATH_DEFINES is defined.
+build:windows --copt=/D_USE_MATH_DEFINES
+
 # Default paths for TF_SYSTEM_LIBS
 build:linux --define=PREFIX=/usr
 build:linux --define=LIBDIR=$(PREFIX)/lib

tensorflow/cc/gradients/math_grad.cc

@@ -13,7 +13,6 @@ See the License for the specific language governing permissions and
 limitations under the License.
 ==============================================================================*/
 
-#define _USE_MATH_DEFINES
 #include <cmath>
 
 #include "tensorflow/cc/ops/array_ops_internal.h"

tensorflow/compiler/xla/client/lib/math.cc

@@ -15,9 +15,7 @@ limitations under the License.
 
 #include "tensorflow/compiler/xla/client/lib/math.h"
 
-// This macro is required to make MSVC defines math constants in math.h
-#define _USE_MATH_DEFINES
-#include <math.h>
+#include <cmath>
 
 #include "tensorflow/compiler/xla/client/lib/arithmetic.h"
 #include "tensorflow/compiler/xla/client/lib/constants.h"

tensorflow/core/lib/random/random_distributions.h

@@ -18,10 +18,7 @@ limitations under the License.
 
 #include <string.h>
 
-#define _USE_MATH_DEFINES
-#include <math.h>
 #include <cmath>
-#undef _USE_MATH_DEFINES
 
 #include <algorithm>
 #include <type_traits>

tensorflow/core/lib/random/random_distributions_test.cc

@@ -15,8 +15,8 @@ limitations under the License.
 
 #include "tensorflow/core/lib/random/random_distributions.h"
 
-#include <math.h>
 #include <algorithm>
+#include <cmath>
 #include <functional>
 #include <numeric>
 #include <unordered_map>

tensorflow/lite/experimental/microfrontend/lib/window_util.c

@@ -14,8 +14,6 @@ limitations under the License.
 ==============================================================================*/
 #include "tensorflow/lite/experimental/microfrontend/lib/window_util.h"
 
-// This macro is required to make MSVC defines math constants in math.h
-#define _USE_MATH_DEFINES
 #include <math.h>
 #include <stdio.h>
 #include <stdlib.h>

tensorflow/tensorflow.bzl

@@ -267,6 +267,8 @@ def get_win_copts(is_external = False):
         # "/EHs-c-",
         "/wd4577",
         "/DNOGDI",
+        # Also see build:windows lines in tensorflow/opensource_only/.bazelrc
+        # where we set some other options globally.
     ]
     if is_external:
         return WINDOWS_COPTS + ["/UTF_COMPILE_LIBRARY"]