Fix the build

(cherry-picked from commit 296dc446376e19d2ce995ae7bc886560523eca2d)

Change-Id: I924f4796fbb70a0f45cc23a852e26e634c5b0e0e
diff --git a/liblog/Android.mk b/liblog/Android.mk
index 54e0b92..a4c52e7 100644
--- a/liblog/Android.mk
+++ b/liblog/Android.mk
@@ -61,7 +61,10 @@
 # ========================================================
 LOCAL_MODULE := liblog
 LOCAL_SRC_FILES := $(liblog_host_sources)
-LOCAL_LDLIBS := -lpthread -lrt
+LOCAL_LDLIBS := -lpthread
+ifeq ($(strip $(HOST_OS)),linux)
+LOCAL_LDLIBS += -lrt
+endif
 LOCAL_CFLAGS := -DFAKE_LOG_DEVICE=1
 include $(BUILD_HOST_STATIC_LIBRARY)
 
@@ -77,7 +80,10 @@
 include $(CLEAR_VARS)
 LOCAL_MODULE := lib64log
 LOCAL_SRC_FILES := $(liblog_host_sources)
-LOCAL_LDLIBS := -lpthread -lrt
+LOCAL_LDLIBS := -lpthread
+ifeq ($(strip $(HOST_OS)),linux)
+LOCAL_LDLIBS += -lrt
+endif
 LOCAL_CFLAGS := -DFAKE_LOG_DEVICE=1 -m64
 include $(BUILD_HOST_STATIC_LIBRARY)