Added library for shared functions.

.gitignore

@@ -5,4 +5,6 @@ cmake_install.cmake
 compile_commands.json
 .dir-locals.el
 Makefile
-Urchin-*
+urchin-*
+lib*.a
+lib*.so

CMakeLists.txt

@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.16)
-project(Urchin
+project(urchin
     VERSION 0
     DESCRIPTION "Simple Mud Experiment in C"
     HOMEPAGE_URL "https://git.warwick-new.co.uk/"
@@ -9,6 +9,15 @@ set(CMAKE_C_STANDARD 90)
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 set(CMAKE_C_CLANG_TIDY)
 
+# Compile Shared Library
+file(GLOB_RECURSE LIBRARY_SOURCE_FILES
+    ${CMAKE_SOURCE_DIR}/src/shared_lib/*.c)
+
+file(GLOB_RECURSE LIBRARY_HEADER_FILES
+    ${CMAKE_SOURCE_DIR}/src/shared_lib/*.h)
+
+add_library(${PROJECT_NAME} SHARED ${LIBRARY_HEADER_FILES} ${LIBRARY_SOURCE_FILES})
+
 # Compile Server
 file(GLOB_RECURSE SERVER_SOURCE_FILES
     ${CMAKE_SOURCE_DIR}/src/server/*.c)
@@ -17,6 +26,7 @@ file(GLOB_RECURSE SERVER_HEADER_FILES
     ${CMAKE_SOURCE_DIR}/src/server/*.h)
 
 add_executable(${PROJECT_NAME}-server ${SERVER_HEADER_FILES} ${SERVER_SOURCE_FILES})
+target_link_libraries(${PROJECT_NAME}-server ${PROJECT_NAME})
 
 # Compile Client
 file(GLOB_RECURSE CLIENT_SOURCE_FILES
@@ -26,3 +36,4 @@ file(GLOB_RECURSE CLIENT_HEADER_FILES
     ${CMAKE_SOURCE_DIR}/src/client/*.h)
 
 add_executable(${PROJECT_NAME}-client ${CLIENT_HEADER_FILES} ${CLIENT_SOURCE_FILES})
+target_link_libraries(${PROJECT_NAME}-client ${PROJECT_NAME})

src/client/main.c

@@ -1,6 +1,7 @@
 // Sorry in advance for all the comments. This project is also a way for me to
 // learn C.
 
+#include "error.h"
 #include <netdb.h>      // Contains host structure
 #include <netinet/in.h> //sockaddr_in
 #include <stdio.h>
@@ -10,15 +11,15 @@
 #include <sys/socket.h> // sockaddr
 #include <sys/types.h>
 
-void error_crash(const char *msg) {
+// void error_crash(const char *msg) {
-  fprintf(stderr, "error crash: %s\n", msg);
+//   fprintf(stderr, "error crash: %s\n", msg);
-  exit(EXIT_FAILURE);
+//   exit(EXIT_FAILURE);
-}
+// }
-
+//
-void error_warn(const char *msg) { fprintf(stderr, "warning: %s\n", msg); }
+// void error_warn(const char *msg) { fprintf(stderr, "warning: %s\n", msg); }
-
+//
-// TODO: Save the logs somewhere
+// // TODO: Save the logs somewhere
-void error_log(const char *msg) { fprintf(stderr, "log: %s\n", msg); }
+// void error_log(const char *msg) { fprintf(stderr, "log: %s\n", msg); }
 
 int main(int argc, char *argv[]) {
   // Set up containers for file descriptor id's

src/server/main.c

@@ -1,6 +1,7 @@
 // Sorry in advance for all the comments. This project is also a way for me to
 // learn C.
 
+#include "error.h"
 #include <netinet/in.h> //sockaddr_in
 #include <stdio.h>
 #include <stdlib.h> // Keeping for conversion functions
@@ -9,16 +10,6 @@
 #include <sys/socket.h> // sockaddr
 #include <sys/types.h>
 
-void error_crash(const char *msg) {
-  fprintf(stderr, "error crash: %s\n", msg);
-  exit(EXIT_FAILURE);
-}
-
-void error_warn(const char *msg) { fprintf(stderr, "warning: %s\n", msg); }
-
-// TODO: Save the logs somewhere
-void error_log(const char *msg) { fprintf(stderr, "log: %s\n", msg); }
-
 int main(int argc, char *argv[]) {
   // Set up containers for file descriptor id's
   int sockfd, clientsockfd, portno, errflag;

src/shared_lib/error.c

@@ -0,0 +1,11 @@
+#include "error.h"
+
+void error_crash(const char *msg) {
+  fprintf(stderr, "error crash: %s\n", msg);
+  exit(EXIT_FAILURE);
+}
+
+void error_warn(const char *msg) { fprintf(stderr, "warning: %s\n", msg); }
+
+// TODO: Save the logs somewhere
+void error_log(const char *msg) { fprintf(stderr, "log: %s\n", msg); }

src/shared_lib/error.h

@@ -0,0 +1,10 @@
+#pragma once
+
+#include <stdio.h>
+#include <stdlib.h>
+
+void error_crash(const char *msg);
+
+void error_warn(const char *msg);
+
+void error_log(const char *msg);