diff --git a/.gitignore b/.gitignore
index a9e97e5..785910d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,6 @@
 src/*.o
 *.o
 caur
+*.tar.gz
+*.bak
+cleanup.sh
diff --git a/src/build.c b/src/build.c
new file mode 100644
index 0000000..9c5be70
--- /dev/null
+++ b/src/build.c
@@ -0,0 +1,93 @@
+#include "caur.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/wait.h>
+
+int setup_cache_directory(char *cache_dir, size_t size) {
+    const char *home = getenv("HOME");
+    if (home == NULL) {
+        fprintf(stderr, "Could not determine the user's home directory.\n");
+        return 1;
+    }
+
+    snprintf(cache_dir, size, "%s/.config/caur", home);
+
+    struct stat st = {0};
+    if (stat(cache_dir, &st) == -1) {
+        if (mkdir(cache_dir, 0755) == -1) {
+            fprintf(stderr, "Failed to create cache directory: %s\n", strerror(errno));
+            return 1;
+        } else {
+            printf("Cache directory created: %s\n", cache_dir);
+        }
+    } else {
+        printf("Cache directory already exists: %s\n", cache_dir);
+    }
+
+    return 0;
+}
+
+int build_package(const char *package_name) {
+    char cache_dir[1024];
+    char tar_file[1024];
+    char unpack_dir[1024];
+    char build_command[1024];
+
+    int ret;
+
+    // Set up the cache directory
+    if (setup_cache_directory(cache_dir, sizeof(cache_dir)) != 0) {
+        return 1;
+    }
+
+    // Path to the downloaded .tar.gz file
+    ret = snprintf(tar_file, sizeof(tar_file), "%s/%s.tar.gz", cache_dir, package_name);
+    if ((size_t)ret >= sizeof(tar_file)) {
+        fprintf(stderr, "Warning: tar_file path was truncated.\n");
+        return 1;
+    }
+
+    // Check if the tar.gz file exists
+    struct stat st;
+    if (stat(tar_file, &st) != 0) {
+        fprintf(stderr, "Error: The file %s does not exist. Please check the download process.\n", tar_file);
+        return 1;
+    }
+
+    // Create directory to unpack the files into
+    ret = snprintf(unpack_dir, sizeof(unpack_dir), "%s/%s", cache_dir, package_name);
+    if ((size_t)ret >= sizeof(unpack_dir)) {
+        fprintf(stderr, "Warning: unpack_dir path was truncated.\n");
+        return 1;
+    }
+    mkdir(unpack_dir, 0755);
+
+    // Unpack the downloaded .tar.gz file
+    if (unpack_tar_gz(tar_file, unpack_dir) != 0) {
+        return 1;
+    }
+
+    // Change directory to unpacked location and build the package
+    ret = snprintf(build_command, sizeof(build_command), "cd %s && makepkg -si", unpack_dir);
+    if ((size_t)ret >= sizeof(build_command)) {
+        fprintf(stderr, "Warning: build_command was truncated.\n");
+        return 1;
+    }
+
+    int result = system(build_command);
+    if (result == -1) {
+        fprintf(stderr, "Failed to execute build command\n");
+        return 1;
+    } else if (WIFEXITED(result) && WEXITSTATUS(result) != 0) {
+        fprintf(stderr, "Build failed with exit status %d.\n", WEXITSTATUS(result));
+        return 1;
+    }
+
+    printf("Package %s built and installed successfully.\n", package_name);
+    return 0;
+}
+
diff --git a/src/caur.h b/src/caur.h
index 150fb08..151f603 100644
--- a/src/caur.h
+++ b/src/caur.h
@@ -4,13 +4,30 @@
 #include <stdio.h>
 #include <curl/curl.h>
 
+// Define the URL for the AUR package and the file extension
+#define AUR_PACKAGE_URL "https://aur.archlinux.org/cgit/aur.git/snapshot/"
+#define AUR_PACKAGE_URL_END ".tar.gz"
+
 // Function to write data to file
 size_t write_data(void *ptr, size_t size, size_t nmemb, FILE *stream);
 
 // Function to download a package from the AUR
-int download_package(const char *package_name);
+int download_package(const char *package_name, const char *cache_dir);
 
 // Function to perform a system upgrade
 int perform_system_upgrade();
 
+// Function to create cache/build directory
+int setup_cache_directory(char *cache_dir, size_t size);
+
+// Function to unpack archived .tar.gz file
+// TODO: Look into seeing if other archive formats are used
+int unpack_tar_gz(const char *filename, const char *destination);
+
+// Function to build package
+int build_package(const char *package_name);
+
+// Reading user config file
+FILE *open_config_file(const char *cache_dir);
+
 #endif // CAUR_H
diff --git a/src/config.c b/src/config.c
new file mode 100644
index 0000000..150cc18
--- /dev/null
+++ b/src/config.c
@@ -0,0 +1,21 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+FILE *open_config_file(const char *cache_dir) {
+    char config_file[512];
+
+    // Construct the full path to the config file
+    if ((size_t)snprintf(config_file, sizeof(config_file), "%s/config", cache_dir) >= sizeof(config_file)) {
+        fprintf(stderr, "config_file was truncated\n");
+        return NULL;
+    }
+
+    // Attempt to open the config file
+    FILE *file = fopen(config_file, "r");
+    if (file == NULL) {
+        fprintf(stderr, "Could not open config file: %s\n", config_file);
+        return NULL;
+    }
+
+    return file;
+}
\ No newline at end of file
diff --git a/src/download.c b/src/download.c
index 77c1224..d55b18a 100644
--- a/src/download.c
+++ b/src/download.c
@@ -1,23 +1,24 @@
 #include "caur.h"
-#include <string.h>
-
-#define AUR_PACKAGE_URL "https://aur.archlinux.org/cgit/aur.git/snapshot/"
-#define AUR_PACKAGE_URL_END ".tar.gz"
+#include <stdio.h>
+#include <stdlib.h>
+#include <curl/curl.h>
+#include <sys/stat.h>
 
 size_t write_data(void *ptr, size_t size, size_t nmemb, FILE *stream) {
     size_t written = fwrite(ptr, size, nmemb, stream);
     return written;
 }
 
-int download_package(const char *package_name) {
+int download_package(const char *package_name, const char *cache_dir) {
     CURL *curl;
     FILE *fp;
     CURLcode res;
     char url[256];
-    char outfilename[256];
+    char outfilename[512]; 
 
+    // Construct the URL and output file path
     snprintf(url, sizeof(url), "%s%s%s", AUR_PACKAGE_URL, package_name, AUR_PACKAGE_URL_END);
-    snprintf(outfilename, sizeof(outfilename), "%s%s", package_name, AUR_PACKAGE_URL_END);
+    snprintf(outfilename, sizeof(outfilename), "%s/%s%s", cache_dir, package_name, AUR_PACKAGE_URL_END);
 
     curl = curl_easy_init();
     if (curl) {
@@ -38,10 +39,19 @@ int download_package(const char *package_name) {
             fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res));
             return 1;
         }
+
+        // Check if the file was downloaded correctly
+        struct stat st;
+        if (stat(outfilename, &st) != 0) {
+            fprintf(stderr, "Downloaded file %s not found.\n", outfilename);
+            return 1;
+        }
+
+        printf("Downloaded file %s successfully, size: %ld bytes\n", outfilename, st.st_size);
     } else {
         fprintf(stderr, "Failed to init curl\n");
         return 1;
     }
 
     return 0;
-}
\ No newline at end of file
+}
diff --git a/src/main.c b/src/main.c
index e97422e..df347f6 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,4 +1,4 @@
-// Version: 0.1.1
+// Version: 0.1.5
 // date created 8-31-24
 
 #include "caur.h"
@@ -12,7 +12,14 @@
 // #include <json-c/json.h> // Parsing packing information from the AUR packages
 
 int main(int argc, char *argv[]) {
+    char cache_dir[1024];
 
+    // Setup cache directory
+    if (setup_cache_directory(cache_dir, sizeof(cache_dir)) != 0) {
+        return 1;
+    }
+
+    // Perform system upgrade if fewer characters than 1 are entered.
     if (argc < 2) {
         printf("Performing system upgrade...\n");
         return perform_system_upgrade();
@@ -22,18 +29,20 @@ int main(int argc, char *argv[]) {
     const char *package_name = argv[1];
 
     // Call download function with provided package name
-    if (download_package(package_name) == 0) {
+    if (download_package(package_name, cache_dir) == 0) {
         printf("Package %s downloaded successfully\n", package_name);
+
+        // Build and install the package
+        if (build_package(package_name) == 0) {
+            printf("Successfully built and installed %s!\n", package_name);
+        } else {
+            printf("Building package %s failed.\n", package_name);
+        }
     } else {
         printf("Failed to download package %s\n", package_name);
     }
 
     return 0;
 
-    /* const char *package_name = "neofetch";
-    if (download_package(package_name) == 0) {
-        printf("Package downloaded successfully\n");
-    } else {
-        printf("Failed to download package");
-    } */
+
 }
diff --git a/src/unpack.c b/src/unpack.c
new file mode 100644
index 0000000..0e9cd1e
--- /dev/null
+++ b/src/unpack.c
@@ -0,0 +1,28 @@
+#include <stdlib.h>   // For system()
+#include <stdio.h>    // For printf(), fprintf()
+#include <sys/wait.h> // System calls need to CTFD
+
+#include "caur.h"
+
+int unpack_tar_gz(const char *filename, const char *destination) {
+    char command[1024];
+    int ret = snprintf(command, sizeof(command), "tar -xzf %s --strip-components=1 -C %s", filename, destination);
+
+    if ((size_t)ret >= sizeof(command)) {
+        fprintf(stderr, "Warning: tar command was truncated.\n");
+        return 1;
+    }
+
+    int result = system(command);
+    if (result == -1) {
+        fprintf(stderr, "Failed to execute tar command\n");
+        return 1;
+    } else if (WIFEXITED(result) && WEXITSTATUS(result) != 0) {
+        fprintf(stderr, "Unpacking failed with exit status %d.\n", WEXITSTATUS(result));
+        return 1;
+    }
+
+    printf("Successfully unpacked %s to %s\n", filename, destination);
+    return 0;
+}
+