Enable building libbase on Windows.

We have to exclude the logging facilities for now (since we don't have
a std::mutex on Windows), but there's plenty else in here that is
worth having.

Change-Id: I6d1369e34e08ea2e88a0b1130c4462e5d35d99e2
diff --git a/base/Android.mk b/base/Android.mk
index 7bd317b..ad85c6b 100644
--- a/base/Android.mk
+++ b/base/Android.mk
@@ -18,13 +18,11 @@
 
 libbase_src_files := \
     file.cpp \
-    logging.cpp \
     stringprintf.cpp \
     strings.cpp \
 
 libbase_test_src_files := \
     file_test.cpp \
-    logging_test.cpp \
     stringprintf_test.cpp \
     strings_test.cpp \
     test_main.cpp \
@@ -40,7 +38,7 @@
 include $(CLEAR_VARS)
 LOCAL_MODULE := libbase
 LOCAL_CLANG := true
-LOCAL_SRC_FILES := $(libbase_src_files)
+LOCAL_SRC_FILES := $(libbase_src_files) logging.cpp
 LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
 LOCAL_CPPFLAGS := $(libbase_cppflags)
 LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/include
@@ -63,6 +61,9 @@
 include $(CLEAR_VARS)
 LOCAL_MODULE := libbase
 LOCAL_SRC_FILES := $(libbase_src_files)
+ifneq ($(HOST_OS),windows)
+    LOCAL_SRC_FILES += logging.cpp
+endif
 LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
 LOCAL_CPPFLAGS := $(libbase_cppflags)
 LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/include
@@ -84,7 +85,7 @@
 include $(CLEAR_VARS)
 LOCAL_MODULE := libbase_test
 LOCAL_CLANG := true
-LOCAL_SRC_FILES := $(libbase_test_src_files)
+LOCAL_SRC_FILES := $(libbase_test_src_files) logging_test.cpp
 LOCAL_C_INCLUDES := $(LOCAL_PATH)
 LOCAL_CPPFLAGS := $(libbase_cppflags)
 LOCAL_SHARED_LIBRARIES := libbase
@@ -96,6 +97,9 @@
 include $(CLEAR_VARS)
 LOCAL_MODULE := libbase_test
 LOCAL_SRC_FILES := $(libbase_test_src_files)
+ifneq ($(HOST_OS),windows)
+    LOCAL_SRC_FILES += logging_test.cpp
+endif
 LOCAL_C_INCLUDES := $(LOCAL_PATH)
 LOCAL_CPPFLAGS := $(libbase_cppflags)
 LOCAL_SHARED_LIBRARIES := libbase