diff --git a/README.md b/README.md
index a5d16cb..e1231eb 100644
--- a/README.md
+++ b/README.md
@@ -13,6 +13,16 @@ All the features listed are Thread-safe.
 - Vectors
 - Stack
 
+## Installation
+
+Clone the repo, and then using `meson` install it:
+
+```
+$ meson setup build
+$ cd build
+$ meson install
+```
+
 ## Usage
 
 See the `test/` folder for examples.
diff --git a/meson.build b/meson.build
index 58abcc0..cbe0fbb 100644
--- a/meson.build
+++ b/meson.build
@@ -5,27 +5,42 @@ project(
   default_options: ['c_std=c17','warning_level=3'],
 )
 
-src = files(
+cc = meson.get_compiler('c')
+
+# Sources without test files
+lib_src = files(
   'hashmap/myhashmap.c',
   'queue/myqueue.c',
   'string/mystring.c',
   'vector/myvector.c',
   'stack/mystack.c',
+  'socket/mysocket.c',
 )
 
-testlib = files(
+# Test files
+test_src = files(
   'test/test.c',
   'test/hashmap/hm1.c',
-  'test/queue/q1.c',
+  'test/queue/queue1.c',
   'test/string/str1.c',
   'test/string/str2.c',
   'test/string/str3.c',
-  'test/vector/v1.c',
-  'test/stack/s1.c',
+  'test/vector/vec1.c',
+  'test/stack/stack1.c',
+  'test/socket/socket1.c',
 )
 
-sources = src + testlib
+# Windows Socket lib
+winsock_dep = cc.find_library('ws2_32', required: false)
 
-inc_dir = include_directories('string', 'queue', 'hashmap', 'vector')
+# Include directories
+inc_dir = include_directories('string', 'queue', 'hashmap', 'vector', 'stack', 'socket')
 
-executable('testlib', sources, include_directories: inc_dir)
+# Static library
+myclib_lib = static_library('myclib', lib_src, include_directories: inc_dir, dependencies: winsock_dep, install: true)
+
+# Install headers
+install_headers(['hashmap/myhashmap.h', 'queue/myqueue.h', 'string/mystring.h', 'vector/myvector.h', 'stack/mystack.h', 'socket/mysocket.h'], subdir: 'myclib')
+
+# Test executable
+executable('testlib', lib_src + test_src, include_directories: inc_dir, dependencies: winsock_dep)
diff --git a/set/myset.c b/set/myset.c
new file mode 100644
index 0000000..1dafe9e
--- /dev/null
+++ b/set/myset.c
@@ -0,0 +1,28 @@
+#include "myset.h"
+
+#include <stdlib.h>
+
+set_s *set_new(size_t element_size) {
+	if (element_size == 0) {
+		return NULL;
+	}
+
+	set_s *set = (set_s *)malloc(sizeof(set_s));
+	if (set == NULL) {
+		return NULL;
+	}
+
+	// TODO: think about how to deal the free_value for each element
+
+	return set;
+}
+
+int set_add(set_s *set, void *elem);
+
+int set_remove(set_s *set, void *elem);
+
+int set_clear(set_s *set);
+
+int set_contains(set_s *set, void *elem);
+
+void set_free(set_s *set);
diff --git a/set/myset.h b/set/myset.h
new file mode 100644
index 0000000..549519d
--- /dev/null
+++ b/set/myset.h
@@ -0,0 +1,27 @@
+#ifndef MYCLIB_SET_H
+#define MYCLIB_SET_H
+
+// TODO: WIP
+
+#include <threads.h>
+
+#include "../hashmap/myhashmap.h"
+
+typedef struct set {
+	hashmap_s *map;
+	mtx_t lock;
+} set_s;
+
+set_s *set_new(size_t element_size);
+
+int set_add(set_s *set, void *elem);
+
+int set_remove(set_s *set, void *elem);
+
+int set_clear(set_s *set);
+
+int set_contains(set_s *set, void *elem);
+
+void set_free(set_s *set);
+
+#endif
diff --git a/socket/mysocket.c b/socket/mysocket.c
new file mode 100644
index 0000000..a9646ef
--- /dev/null
+++ b/socket/mysocket.c
@@ -0,0 +1,39 @@
+#include "mysocket.h"
+
+#include <winsock2.h>
+
+int sock_platform_init() {
+#ifdef _WIN32
+	WSADATA wsaData;
+	if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0) {
+		return -1;
+	}
+
+	if (LOBYTE(wsaData.wVersion) != 2 || HIBYTE(wsaData.wVersion) != 2) {
+		WSACleanup();
+		return -1;
+	}
+#endif
+
+	return 0;
+}
+
+int sock_close(int socket) {
+	int ret = 0;
+
+#ifdef _WIN32
+	ret = closesocket(socket);
+#else
+	ret = close(socket);
+#endif
+
+	return ret;
+}
+
+int sock_platform_shutdown() {
+#ifdef _WIN32
+	WSACleanup();
+#endif
+
+	return 0;
+}
diff --git a/socket/mysocket.h b/socket/mysocket.h
new file mode 100644
index 0000000..b50ed10
--- /dev/null
+++ b/socket/mysocket.h
@@ -0,0 +1,27 @@
+#ifndef MYCLIB_SOCKET_H
+#define MYCLIB_SOCKET_H
+
+#ifdef _WIN32
+/* Windows */
+#include <winsock2.h>
+#include <ws2tcpip.h>
+#else
+/* Unix */
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+
+#endif
+
+/* Run this before everything */
+int sock_platform_init();
+
+/* Use this to close a socket */
+int sock_close(int socket);
+
+/* Use at exit */
+int sock_platform_shutdown();
+
+#endif
diff --git a/string/mystring.c b/string/mystring.c
index f9d24a4..2dde00f 100644
--- a/string/mystring.c
+++ b/string/mystring.c
@@ -363,7 +363,7 @@ int string_tolower(string_s *string) {
 
 /* Build Longest Prefix Suffix array */
 static void build_lps(int *lps, const char *substring, size_t sub_len) {
-	size_t len = 0;
+	int len = 0;
 	size_t i = 1;
 
 	while (i < sub_len) {
@@ -396,8 +396,9 @@ int string_find(string_s *string, const char *substring) {
 	}
 
 	size_t sub_len = strlen(substring);
-	int lps[sub_len];
-	memset(lps, 0, sizeof(lps));
+
+	int *lps = (int *)malloc(sub_len * sizeof(int));
+	memset(lps, 0, sub_len * sizeof(int));
 	build_lps(lps, substring, sub_len);
 
 	size_t i = 0; /* string iterator */
@@ -407,9 +408,10 @@ int string_find(string_s *string, const char *substring) {
 			i++;
 			j++;
 			if (j == sub_len) {
+				free(lps);
 				mtx_unlock(&string->lock);
 
-				return i - j;
+				return (int)(i - j);
 			}
 		} else {
 			if (j != 0) {
@@ -420,6 +422,8 @@ int string_find(string_s *string, const char *substring) {
 		}
 	}
 
+	free(lps);
+
 	mtx_unlock(&string->lock);
 
 	return -1;
diff --git a/test/queue/q1.c b/test/queue/queue1.c
similarity index 93%
rename from test/queue/q1.c
rename to test/queue/queue1.c
index 936c549..2df7eaf 100644
--- a/test/queue/q1.c
+++ b/test/queue/queue1.c
@@ -1,49 +1,49 @@
-#include <assert.h>
-
-#include "../../queue/myqueue.h"
-
-void test_q1(void) {
-	/* Allocate a new queue */
-	queue_s *queue = queue_new(3, sizeof(int));
-	assert(queue != NULL);
-
-	int val, out;
-
-	/* Push value to the ring buffer */
-	val = 1;
-	assert(queue_push(queue, &val) == 0);
-
-	val = 2;
-	assert(queue_push(queue, &val) == 0);
-
-	/* Retrieve values */
-	int front, rear;
-	assert(queue_get_front(queue, &front) == 0);
-	assert(queue_get_rear(queue, &rear) == 0);
-	assert(front == 1);
-	assert(rear == 2);
-
-	/* Remove an element from the buffer */
-	assert(queue_pop(queue, &out) == 0);
-	assert(out == 1);
-
-	assert(queue_get_front(queue, &front) == 0);
-	assert(front == 2);
-
-	val = 3;
-	assert(queue_push(queue, &val) == 0);
-
-	assert(queue_get_rear(queue, &rear) == 0);
-	assert(rear == 3);
-
-	val = 4;
-	assert(queue_push(queue, &val) == 0);
-
-	/* Clear queue */
-	while (queue_pop(queue, &out) == 0) {
-	}
-	assert(queue->size == 0);
-
-	/* Deallocate memory */
-	queue_free(queue);
-}
+#include <assert.h>
+
+#include "../../queue/myqueue.h"
+
+void test_queue1(void) {
+	/* Allocate a new queue */
+	queue_s *queue = queue_new(3, sizeof(int));
+	assert(queue != NULL);
+
+	int val, out;
+
+	/* Push value to the ring buffer */
+	val = 1;
+	assert(queue_push(queue, &val) == 0);
+
+	val = 2;
+	assert(queue_push(queue, &val) == 0);
+
+	/* Retrieve values */
+	int front, rear;
+	assert(queue_get_front(queue, &front) == 0);
+	assert(queue_get_rear(queue, &rear) == 0);
+	assert(front == 1);
+	assert(rear == 2);
+
+	/* Remove an element from the buffer */
+	assert(queue_pop(queue, &out) == 0);
+	assert(out == 1);
+
+	assert(queue_get_front(queue, &front) == 0);
+	assert(front == 2);
+
+	val = 3;
+	assert(queue_push(queue, &val) == 0);
+
+	assert(queue_get_rear(queue, &rear) == 0);
+	assert(rear == 3);
+
+	val = 4;
+	assert(queue_push(queue, &val) == 0);
+
+	/* Clear queue */
+	while (queue_pop(queue, &out) == 0) {
+	}
+	assert(queue->size == 0);
+
+	/* Deallocate memory */
+	queue_free(queue);
+}
diff --git a/test/socket/socket1.c b/test/socket/socket1.c
new file mode 100644
index 0000000..524dfcc
--- /dev/null
+++ b/test/socket/socket1.c
@@ -0,0 +1,40 @@
+#include <stdio.h>
+
+#include "../../socket/mysocket.h"
+
+void test_socket1() {
+	sock_platform_init();
+
+	struct addrinfo hints, *res, *p;
+	char ipstr[INET6_ADDRSTRLEN];
+	memset(&hints, 0, sizeof hints);
+	hints.ai_family = AF_UNSPEC;
+	hints.ai_socktype = SOCK_STREAM;
+
+	char hostname[1024];
+	printf("hostname> ");
+	fscanf(stdin, "%s", hostname);
+
+	if (getaddrinfo(hostname, NULL, &hints, &res) != 0) {
+		fprintf(stderr, "getaddrinfo()\n");
+		sock_platform_shutdown();
+	}
+
+	for (p = res; p != NULL; p = p->ai_next) {
+		void *addr = 0;
+		char *ipver = 0;
+		struct sockaddr_in *ipv4;
+
+		if (p->ai_family == AF_INET) {
+			ipv4 = (struct sockaddr_in *)p->ai_addr;
+			addr = &(ipv4->sin_addr);
+			ipver = "IPv4";
+		} else {
+			continue;
+		}
+		inet_ntop(p->ai_family, addr, ipstr, sizeof ipstr);
+		printf("%s: %s\n", ipver, ipstr);
+	}
+
+	sock_platform_shutdown();
+}
diff --git a/test/stack/s1.c b/test/stack/stack1.c
similarity index 88%
rename from test/stack/s1.c
rename to test/stack/stack1.c
index a26902a..7fb4630 100644
--- a/test/stack/s1.c
+++ b/test/stack/stack1.c
@@ -3,7 +3,7 @@
 
 #include "../../stack/mystack.h"

 
-void test_s1(void) {
+void test_stack1(void) {
 	stack_s *stack = stack_new(32, sizeof(int));
 	int num = 10;
 	stack_push(stack, &num);
diff --git a/test/test.c b/test/test.c
index 1d98e09..45653d7 100644
--- a/test/test.c
+++ b/test/test.c
@@ -7,15 +7,17 @@
 
 void test_hm1(void);
 
-void test_q1(void);
+void test_queue1(void);
 
 void test_str1(void);
 void test_str2(void);
 void test_str3(void);
 
-void test_v1(void);
+void test_vec1(void);
 
-void test_s1(void);
+void test_stack1(void);
+
+void test_socket1();
 
 int main(void) {
 	puts("==== [Running Hashmap tests] ====");
@@ -24,7 +26,7 @@ int main(void) {
 	puts("");
 
 	puts("==== [Running Queue tests] ====");
-	test_q1();
+	test_queue1();
 	puts("OK!");
 	puts("");
 
@@ -36,12 +38,17 @@ int main(void) {
 	puts("");
 
 	puts("==== [Running Vector tests] ====");
-	test_v1();
+	test_vec1();
 	puts("OK!");
 	puts("");
 
 	puts("==== [Running Stack tests] ====");
-	test_s1();
+	test_stack1();
+	puts("OK!");
+	puts("");
+
+	puts("==== [Running Socket tests] ====");
+	test_socket1();
 	puts("OK!");
 	puts("");
 
diff --git a/test/vector/v1.c b/test/vector/vec1.c
similarity index 94%
rename from test/vector/v1.c
rename to test/vector/vec1.c
index e3ff79c..1d6271e 100644
--- a/test/vector/v1.c
+++ b/test/vector/vec1.c
@@ -1,80 +1,80 @@
-#include <assert.h>
-#include <stdlib.h>
-
-#include "../../vector/myvector.h"
-
-typedef struct my_elem {
-	char name[32];
-	int age;
-} my_elem_s;
-
-/* Functions used to iterate for each vector's element */
-static void multiply(size_t index, void *elem) {
-	my_elem_s *e = (my_elem_s *)elem;
-	e->age = e->age * 2;
-}
-
-/* Another way to use foreach
-static void print(size_t index, void *elem) {
-	my_elem_s *e = (my_elem_s *)elem;
-	printf("%s (%d)\n", e->name, e->age);
-}
-*/
-
-/* Compare function used to sort */
-int my_cmp(const void *a, const void *b) {
-	/* Sort by age */
-	my_elem_s *ma = (my_elem_s *)a;
-	my_elem_s *mb = (my_elem_s *)b;
-
-	return ma->age - mb->age;
-}
-
-void test_v1() {
-	/* Allocate a new vector */
-	size_t elem_size = sizeof(my_elem_s);
-	vec_s *v = vec_new(10, elem_size);
-	assert(vec_size(v) == 0);
-	assert(vec_cap(v) == 16);
-
-	/* Push an element */
-	my_elem_s e1 = {
-		.age = 21,
-		.name = "John",
-	};
-	vec_push(v, &e1);
-	assert(vec_size(v) == 1);
-
-	/* Retrieve an element (Remember to free) */
-	my_elem_s *e1_v = (my_elem_s *)vec_get(v, 0);
-	free(e1_v);
-
-	/* Pop last element (Remember to free) */
-	my_elem_s *pop = (my_elem_s *)vec_pop(v);
-	free(pop);
-
-	/* Insert an element */
-	vec_push(v, &e1);
-	e1.age = 25;
-	vec_push(v, &e1);
-	e1.age = 19;
-	vec_insert(v, 2, &e1);
-	my_elem_s last = {
-		.age = 33,
-		.name = "Last",
-	};
-	vec_push(v, &last);
-	my_elem_s *lastv = (my_elem_s *)vec_pop(v);
-	free(lastv);
-
-	/* Iterate for each element */
-	vec_foreach(v, multiply);
-	/* Print each element */
-	// vec_foreach(v, print);
-
-	/* Sort */
-	vec_sort(v, my_cmp);
-
-	/* Deallocate the vector */
-	vec_free(v);
-}
+#include <assert.h>
+#include <stdlib.h>
+
+#include "../../vector/myvector.h"
+
+typedef struct my_elem {
+	char name[32];
+	int age;
+} my_elem_s;
+
+/* Functions used to iterate for each vector's element */
+static void multiply(size_t index, void *elem) {
+	my_elem_s *e = (my_elem_s *)elem;
+	e->age = e->age * 2;
+}
+
+/* Another way to use foreach
+static void print(size_t index, void *elem) {
+	my_elem_s *e = (my_elem_s *)elem;
+	printf("%s (%d)\n", e->name, e->age);
+}
+*/
+
+/* Compare function used to sort */
+int my_cmp(const void *a, const void *b) {
+	/* Sort by age */
+	my_elem_s *ma = (my_elem_s *)a;
+	my_elem_s *mb = (my_elem_s *)b;
+
+	return ma->age - mb->age;
+}
+
+void test_vec1() {
+	/* Allocate a new vector */
+	size_t elem_size = sizeof(my_elem_s);
+	vec_s *v = vec_new(10, elem_size);
+	assert(vec_size(v) == 0);
+	assert(vec_cap(v) == 16);
+
+	/* Push an element */
+	my_elem_s e1 = {
+		.age = 21,
+		.name = "John",
+	};
+	vec_push(v, &e1);
+	assert(vec_size(v) == 1);
+
+	/* Retrieve an element (Remember to free) */
+	my_elem_s *e1_v = (my_elem_s *)vec_get(v, 0);
+	free(e1_v);
+
+	/* Pop last element (Remember to free) */
+	my_elem_s *pop = (my_elem_s *)vec_pop(v);
+	free(pop);
+
+	/* Insert an element */
+	vec_push(v, &e1);
+	e1.age = 25;
+	vec_push(v, &e1);
+	e1.age = 19;
+	vec_insert(v, 2, &e1);
+	my_elem_s last = {
+		.age = 33,
+		.name = "Last",
+	};
+	vec_push(v, &last);
+	my_elem_s *lastv = (my_elem_s *)vec_pop(v);
+	free(lastv);
+
+	/* Iterate for each element */
+	vec_foreach(v, multiply);
+	/* Print each element */
+	// vec_foreach(v, print);
+
+	/* Sort */
+	vec_sort(v, my_cmp);
+
+	/* Deallocate the vector */
+	vec_free(v);
+}
diff --git a/vector/myvector.c b/vector/myvector.c
index a666606..b9b6b48 100644
--- a/vector/myvector.c
+++ b/vector/myvector.c
@@ -90,11 +90,11 @@ void vec_free(vec_s *vec) {
 
 size_t vec_size(vec_s *vec) {
 	if (vec == NULL) {
-		return -1;
+		return (size_t)-1;
 	}
 
 	if (mtx_lock(&vec->lock) != thrd_success) {
-		return -1;
+		return (size_t)-1;
 	}
 
 	size_t size = vec->size;
@@ -106,11 +106,11 @@ size_t vec_size(vec_s *vec) {
 
 size_t vec_cap(vec_s *vec) {
 	if (vec == NULL) {
-		return -1;
+		return (size_t)-1;
 	}
 
 	if (mtx_lock(&vec->lock) != thrd_success) {
-		return -1;
+		return (size_t)-1;
 	}
 
 	size_t cap = vec->capacity;