diff --git a/Rules.top b/Rules.top
index a287fc1..c4b8bd4 100644
--- a/Rules.top
+++ b/Rules.top
@@ -11,14 +11,21 @@ include	$(dir)/Rules.mk
 dir	:= client
 include	$(dir)/Rules.mk
 
-LDFLAGS_TMP := -L/usr/local/lib `pkg-config --libs protobuf grpc++ grpc`\
+LDFLAGS_TMP :=  -L/usr/local/lib `pkg-config --libs protobuf grpc++ grpc`\
 	                -Wl,--no-as-needed -lgrpc++_reflection -Wl,--as-needed \
 			                 -ldl \
+							
 
 .PHONY: all
-all: out/vrsrv
+all: out/vr.a out/vrclient out/vr.h
 
-out/vrsrv: $(OBJ)
+out/vr.h: inc/vr.h
+	cp inc/vr.h out/vr.h
+
+out/vr.a: $(OBJ)
+	ar rcs $@ $^
+
+out/vrclient: $(OBJ_C) out/vr.a 
 	$(LINK)
 
 clean:
diff --git a/client/Rules.mk b/client/Rules.mk
index 7966951..239aefa 100644
--- a/client/Rules.mk
+++ b/client/Rules.mk
@@ -8,6 +8,6 @@ CFLAGS_$(MOD):=$(addprefix -I, $(OUT)/proto/)
 SRC_$(d) := client.cc
 # DON'T TOUCH ANYTHING ELSE
 
-include $(MK)/cc.mk
+include $(MK)/cca.mk
 
 include $(MK)/epilogue.mk
diff --git a/client/client.cc b/client/client.cc
index d03bc21..0b0d2d0 100644
--- a/client/client.cc
+++ b/client/client.cc
@@ -1,57 +1,11 @@
 #include <iostream>
 #include <vr.h>
-#include <vrp.h>
 #include <fstream>
+#include <cstring>
 #include <cassert>
 
 using namespace std;
 
-// taken from https://stackoverflow.com/questions/14265581/parse-split-a-string-in-c-using-string-delimiter-standard-c
-vector<string> split(const string& str, const string& delim)
-{
-    vector<string> tokens;
-    size_t prev = 0, pos = 0;
-    do
-    {
-        pos = str.find(delim, prev);
-        if (pos == string::npos) pos = str.length();
-        string token = str.substr(prev, pos-prev);
-        if (!token.empty()) tokens.push_back(token);
-        prev = pos + delim.length();
-    }
-    while (pos < str.length() && prev < str.length());
-    return tokens;
-}
-
-vr_config* parse_config_file(string& path)
-{
-    uint32_t f;
-    string line;
-    ifstream infile(path);
-    getline(infile, line);
-    f = stoi(line);
-
-    vr_config *config = new vr_config(f);
-
-    while(getline(infile, line))
-    {
-        vr_role role;
-
-        vector<string> vec = split(line, " ");
-        assert(vec.size() == 3);
-
-        if(vec.at(0) == "p")
-        {
-            role = PRIMARY;
-        } else {
-            role = REPLICA;
-        }
-
-        config->add_config(role, vec.at(1), stoi(vec.at(2)));
-        cout << "added config: " << (role == PRIMARY ? "PRIMARY" : "REPLICA") << " " << vec.at(1) << ":" << stoi(vec.at(2)) << endl;
-    }
-    return config;
-}
 #define TRANSFER_BLK (2048)
 #define BLK_SIZE (4096)
 int num_block = 0;
@@ -89,9 +43,7 @@ int main(int argc, char* argv[])
         return -1;
     }
 
-    string arg(argv[1]);
-    vr_config *conf = parse_config_file(arg);
-    vr_init(*conf, stoi(argv[2]));
+    vr_init(argv[1], stoi(argv[2]));
 
     if (stoi(argv[2]) == 0)
     {
diff --git a/inc/vr.h b/inc/vr.h
index 44a8d10..a6bd81b 100644
--- a/inc/vr.h
+++ b/inc/vr.h
@@ -1,9 +1,15 @@
 #pragma once
 
-#include "vrp.h"
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 void vr_append(const char *data, size_t len);
 
 void vr_accept(const char *data, size_t len);
 
-void vr_init(vr_config& config, uint32_t config_index);
+void vr_init(const char* config_file_path, uint32_t config_index);
+
+#ifdef __cplusplus
+}
+#endif
\ No newline at end of file
diff --git a/mk/cca.mk b/mk/cca.mk
new file mode 100644
index 0000000..8fe1468
--- /dev/null
+++ b/mk/cca.mk
@@ -0,0 +1,12 @@
+
+OBJ_$(d) := $(OBJ_$(d)) $(addprefix $(OUT)/$(d)/, $(SRC_$(d):.cc=.o))
+
+$(OUT)/$(d)/%.o: MOD:=$(MOD)
+$(OUT)/$(d)/%.o: d:=$(d)
+$(OBJ_$(d)): $(OUT)/$(d)/%.o: $(d)/%.cc
+	$(MKDIR)
+	$(COMP)
+
+OBJ_C := $(OBJ_C) $(OBJ_$(d))
+
+-include $(DEP_$(d))
diff --git a/server/server.cc b/server/server.cc
index c55dd3c..319bc0e 100644
--- a/server/server.cc
+++ b/server/server.cc
@@ -4,6 +4,7 @@
 #include <sstream>
 #include <cstring>
 #include <chrono>
+#include <fstream>
 
 #include <cstdio>
 #include <unistd.h>
@@ -485,7 +486,7 @@ void commit_proc()
     }
 }
 
-void vr_append(const char *_data, size_t len)
+extern "C" void vr_append(const char *_data, size_t len)
 {
     uint32_t op_num = g_state->op_num + 1;
     prepare_req req;
@@ -553,8 +554,64 @@ void vr_init_thrd(vr_config *config, uint32_t config_index)
     server->Wait();
 }
 
-void vr_init(vr_config &config, uint32_t config_index)
+static void _vr_init(vr_config &config, uint32_t config_index)
 {
     server_thrd = thread(vr_init_thrd, &config, config_index);
     while(!init){}
 }
+
+// taken from https://stackoverflow.com/questions/14265581/parse-split-a-string-in-c-using-string-delimiter-standard-c
+vector<string> split(const string& str, const string& delim)
+{
+    vector<string> tokens;
+    size_t prev = 0, pos = 0;
+    do
+    {
+        pos = str.find(delim, prev);
+        if (pos == string::npos) pos = str.length();
+        string token = str.substr(prev, pos-prev);
+        if (!token.empty()) tokens.push_back(token);
+        prev = pos + delim.length();
+    }
+    while (pos < str.length() && prev < str.length());
+    return tokens;
+}
+
+vr_config* parse_config_file(string& path)
+{
+    uint32_t f;
+    string line;
+    ifstream infile(path);
+    getline(infile, line);
+    f = stoi(line);
+
+    vr_config *config = new vr_config(f);
+
+    while(getline(infile, line))
+    {
+        vr_role role;
+
+        vector<string> vec = split(line, " ");
+        assert(vec.size() == 3);
+
+        if(vec.at(0) == "p")
+        {
+            role = PRIMARY;
+        } else {
+            role = REPLICA;
+        }
+
+        config->add_config(role, vec.at(1), stoi(vec.at(2)));
+    
+        cout << "Read config: " << (role == PRIMARY ? "PRIMARY" : "REPLICA") << " " << vec.at(1) << ":" << stoi(vec.at(2)) << endl;
+    }
+    return config;
+}
+
+extern "C" void vr_init(const char* path, uint32_t config_index)
+{
+    vr_config* config;
+    string _path(path);
+    config = parse_config_file(_path);
+    _vr_init(*config, config_index);
+}