From: Jakub Jirutka <jakub@jirutka.cz>
Date: Wed, 6 Apr 2016 00:52:00 +0200
Subject: [PATCH] Unbundle snappy

Use system-provided snappy library instead of downloading and building
snappy from the upstream.

diff --git a/Makefile b/Makefile
index 13838dc..14feedd 100644
--- a/Makefile
+++ b/Makefile
@@ -8,7 +8,7 @@ all: snappy
 
 SNAPPY_OUT:=$(TARGET)/$(snappy)-$(os_arch)
 SNAPPY_ARCHIVE:=$(TARGET)/snappy-$(VERSION).tar.gz 
-SNAPPY_CC:=snappy-sinksource.cc snappy-stubs-internal.cc snappy.cc
+SNAPPY_CC:=
 SNAPPY_SRC_DIR:=$(TARGET)/snappy-$(VERSION)
 SNAPPY_SRC:=$(addprefix $(SNAPPY_SRC_DIR)/,$(SNAPPY_CC))
 SNAPPY_OBJ:=$(addprefix $(SNAPPY_OUT)/,$(patsubst %.cc,%.o,$(SNAPPY_CC)) SnappyNative.o)
@@ -59,7 +59,7 @@ $(SRC)/org/xerial/snappy/SnappyNative.h: $(TARGET)/jni-classes/org/xerial/snappy
 	$(JAVAH) -force -classpath $(TARGET)/jni-classes -o $@ org.xerial.snappy.SnappyNative
 
 ifndef USE_GIT
-  $(SNAPPY_SRC): $(SNAPPY_UNPACKED)
+  $(SNAPPY_SRC):
 else
   $(SNAPPY_SRC): $(SNAPPY_GIT_UNPACKED)
 endif
@@ -74,7 +74,7 @@ $(SNAPPY_OUT)/SnappyNative.o : $(SRC)/org/xerial/snappy/SnappyNative.cpp $(SRC)/
 
 
 $(SNAPPY_OUT)/$(LIBNAME): $(SNAPPY_OBJ)
-	$(CXX) $(CXXFLAGS) -o $@ $+ $(LINKFLAGS) 
+	$(CXX) $(CXXFLAGS) -o $@ $+ $(LINKFLAGS) -lsnappy 
 	$(STRIP) $@
 
 clean-native: 
@@ -90,17 +90,18 @@ NATIVE_DLL:=$(NATIVE_DIR)/$(LIBNAME)
 snappy-jar-version:=snappy-java-$(shell perl -npe "s/version in ThisBuild\s+:=\s+\"(.*)\"/\1/" version.sbt | sed -e "/^$$/d")
 
 ifndef USE_GIT
-  native: $(SNAPPY_UNPACKED) $(NATIVE_DLL)
+  native: $(NATIVE_DLL)
 else
   native: $(SNAPPY_GIT_UNPACKED) $(NATIVE_DLL)
 endif
-snappy: native $(TARGET)/$(snappy-jar-version).jar
+snappy: native
 
 $(NATIVE_DLL): $(SNAPPY_OUT)/$(LIBNAME) 
 	@mkdir -p $(@D)
 	cp $< $@
 	@mkdir -p $(NATIVE_TARGET_DIR)
 	cp $< $(NATIVE_TARGET_DIR)/$(LIBNAME)
+	cp $< $(TARGET)/
 
 
 package: $(TARGET)/$(snappy-jar-version).jar