diff --git a/include/cutils/tztime.h b/include/cutils/tztime.h
index 9b3ece8..4af2ce4 100644
--- a/include/cutils/tztime.h
+++ b/include/cutils/tztime.h
@@ -17,6 +17,8 @@
 #ifndef _CUTILS_TZTIME_H
 #define _CUTILS_TZTIME_H
 
+#include <time.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -24,6 +26,9 @@
 time_t mktime_tz(struct tm * const tmp, char const * tz);
 void localtime_tz(const time_t * const timep, struct tm * tmp, const char* tz);
 
+#ifndef HAVE_ANDROID_OS
+/* the following is defined in <time.h> in Bionic */
+
 struct strftime_locale {
     const char *mon[12];    /* short names */
     const char *month[12];  /* long names */
@@ -39,6 +44,8 @@
 
 size_t strftime_tz(char *s, size_t max, const char *format, const struct tm *tm, const struct strftime_locale *locale);
 
+#endif /* !HAVE_ANDROID_OS */
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/libcutils/Android.mk b/libcutils/Android.mk
index a43f7e3..b6d806e 100644
--- a/libcutils/Android.mk
+++ b/libcutils/Android.mk
@@ -37,6 +37,9 @@
 	properties.c \
 	threads.c
 
+commonHostSources := \
+        ashmem-host.c
+
 # some files must not be compiled when building against Mingw
 # they correspond to features not used by our host development tools
 # which are also hard or even impossible to port to native Win32
@@ -60,16 +63,18 @@
         selector.c \
         fdevent.c \
         tztime.c \
-        tzstrftime.c \
         adb_networking.c \
-	zygote.c
+        zygote.c
+
+    commonHostSources += \
+        tzstrftime.c
 endif
 
 
 # Static library for host
 # ========================================================
 LOCAL_MODULE := libcutils
-LOCAL_SRC_FILES := $(commonSources) ashmem-host.c
+LOCAL_SRC_FILES := $(commonSources) $(commonHostSources)
 LOCAL_LDLIBS := -lpthread
 LOCAL_STATIC_LIBRARIES := liblog
 include $(BUILD_HOST_STATIC_LIBRARY)
@@ -81,7 +86,7 @@
 # ========================================================
 include $(CLEAR_VARS)
 LOCAL_MODULE := libcutils
-LOCAL_SRC_FILES := $(commonSources) memory.c dlmalloc_stubs.c ashmem-host.c
+LOCAL_SRC_FILES := $(commonSources) $(commonHostSources) memory.c dlmalloc_stubs.c
 LOCAL_LDLIBS := -lpthread
 LOCAL_SHARED_LIBRARIES := liblog
 include $(BUILD_SHARED_LIBRARY)