libbacktrace: support building static libraries on target.

Bug: 27125711

Change-Id: I28a49e3e128fa4291815a54cf942452bd1f9f756

libbacktrace/Android.mk

@@ -71,14 +71,22 @@ include $(LOCAL_PATH)/Android.build.mk
 build_type := host
 libbacktrace_multilib := both
 include $(LOCAL_PATH)/Android.build.mk
+
+libbacktrace_shared_libraries :=
+
 libbacktrace_static_libraries := \
 	libbase \
 	liblog \
 	libunwind \
+	liblzma \
 
+module := libbacktrace
+build_type := target
 build_target := STATIC_LIBRARY
 include $(LOCAL_PATH)/Android.build.mk
-libbacktrace_static_libraries :=
+build_type := host
+libbacktrace_multilib := both
+include $(LOCAL_PATH)/Android.build.mk
 
 #-------------------------------------------------------------------------
 # The libbacktrace_offline shared library.
@@ -106,7 +114,6 @@ libbacktrace_offline_static_libraries_host := \
 	libLLVMSupport \
 
 module := libbacktrace_offline
-module_tag := optional
 build_type := target
 build_target := SHARED_LIBRARY
 include $(LOCAL_PATH)/Android.build.mk
@@ -114,6 +121,26 @@ build_type := host
 libbacktrace_multilib := both
 include $(LOCAL_PATH)/Android.build.mk
 
+libbacktrace_offline_shared_libraries :=
+libbacktrace_offline_static_libraries := \
+	libbacktrace \
+	libbase \
+	libcutils \
+	liblog \
+	libunwind \
+	liblzma \
+	libLLVMObject \
+	libLLVMBitReader \
+	libLLVMMC \
+	libLLVMMCParser \
+	libLLVMCore \
+	libLLVMSupport \
+
+module := libbacktrace_offline
+build_type := target
+build_target := STATIC_LIBRARY
+include $(LOCAL_PATH)/Android.build.mk
+
 #-------------------------------------------------------------------------
 # The libbacktrace_test library needed by backtrace_test.
 #-------------------------------------------------------------------------