Don't uncompress/page-align the jni libraries in apps_only build.

Don't uncompress/page-align the jni libraries in apps_only build,
because the apk may be run on older platforms that don't support loading
jni directly from apk.
When prebuilt apks are installed to platform build, the build system
will automatically uncompress/page-align the prebuit apks in M and
downstream, so no need to uncompress/page-align in the apps_only build
either.

Bug: 22491084
Change-Id: I67e977b2592800ae467450592069843b4e5fc466

core/definitions.mk

@@ -2026,13 +2026,23 @@ $(hide) cp $(2) $(dir $@)lib/$(1)
 
 endef
 
+# For apps_only build, don't uncompress/page-align the jni libraries,
+# because the apk may be run on older platforms that don't support loading jni directly from apk.
+ifdef TARGET_BUILD_APPS
+JNI_COMPRESS_FLAGS :=
+ZIPALIGN_PAGE_ALIGN_FLAGS :=
+else
+JNI_COMPRESS_FLAGS := -0
+ZIPALIGN_PAGE_ALIGN_FLAGS := -p
+endif
+
 define add-jni-shared-libs-to-package
 $(hide) rm -rf $(dir $@)lib
 $(hide) mkdir -p $(addprefix $(dir $@)lib/,$(PRIVATE_JNI_SHARED_LIBRARIES_ABI))
 $(foreach abi,$(PRIVATE_JNI_SHARED_LIBRARIES_ABI),\
   $(call _add-jni-shared-libs-to-package-per-abi,$(abi),\
     $(patsubst $(abi):%,%,$(filter $(abi):%,$(PRIVATE_JNI_SHARED_LIBRARIES)))))
-$(hide) (cd $(dir $@) && zip -r -0 $(notdir $@) lib)
+$(hide) (cd $(dir $@) && zip -r $(JNI_COMPRESS_FLAGS) $(notdir $@) lib)
 $(hide) rm -rf $(dir $@)lib
 endef
 
@@ -2078,7 +2088,8 @@ endef
 define align-package
 $(hide) mv $@ $@.unaligned
 $(hide) $(ZIPALIGN) \
-    -f -p \
+    -f \
+    $(ZIPALIGN_PAGE_ALIGN_FLAGS) \
     4 \
     $@.unaligned $@.aligned
 $(hide) mv $@.aligned $@