add makefile

Makefile

@@ -0,0 +1,30 @@
+all: src/rocksdb/librocksdb.a
+
+JOBS=8
+
+src/rocksdb/librocksdb.a:
+	make \
+		-e EXTRA_CXXFLAGS="-fPIC" \
+		-e EXTRA_CFLAGS="-fPIC" \
+		-C src/rocksdb \
+		-j $(JOBS) \
+			libsnappy.a \
+			liblz4.a \
+			libbz2.a \
+			libzstd.a \
+			libz.a
+
+	make \
+		-j $(JOBS) \
+		-e DEBUG_LEVEL=0 \
+		-e EXTRA_CXXFLAGS="-fPIC" \
+		-e EXTRA_CFLAGS="-fPIC" \
+		-e WITH_SNAPPY=1 \
+		-e WITH_LZ4=1 \
+		-e WITH_ZLIB=1 \
+		-e WITH_ZSTD=1 \
+		-C src/rocksdb \
+			static_lib
+
+clean:
+	make -C src/rocksdb clean