diff --git a/Makefile b/Makefile
index 347e44c..82e34f4 100644
--- a/Makefile
+++ b/Makefile
@@ -1,10 +1,7 @@
-# Makefile for building Parsee
+# (GNU)Makefile for building Parsee
 # ================================
 # TODO: Consider making something akin to a configure script that checks 
 # for dependencies, or maybe even use *autoconf* (the devil!)
-#
-# TODO: Either get rid of the GNU extensions, or use a script/program 
-# to build Parsee on a POSIXly environment. I'd dig parsee-buildout, tbf.
 
 
 # =========================== Parsee Flags  =============================
diff --git a/build.c b/build.c
index 27f29af..663f57b 100644
--- a/build.c
+++ b/build.c
@@ -9,12 +9,12 @@
  *  cc build.c -o /tmp/build && /tmp/build
  *
  * TODO: Parallel jobs, CFLAGS and LDFLAGS.
- *
  * Note that this bit is formatted differently.
  * --------------------------------
  * LICENSE: CC0
  * Written-By: LDA [lda@freetards.xyz] [@fourier:ari.lt] */
 
+#include <sys/stat.h>
 #include <sys/wait.h>
 #include <sys/stat.h>
 #include <stdbool.h>
@@ -23,6 +23,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
+#include <time.h>
 
 #define DEFAULT_BUILD_PATH              "build.conf"
 #define DEFAULT_COMPILER                "cc"
@@ -250,6 +251,11 @@ destroy_buildinfo(buildinfo_t *info)
         free(info->basic.obj);
         info->basic.obj = NULL;
     }
+    if (info->basic.cc)
+    {
+        free(info->basic.cc);
+        info->basic.cc = NULL;
+    }
 
     if (info->repo)
     {
@@ -352,6 +358,16 @@ mkdir_rec(char *dir)
         }
     }
 }
+static time_t
+mod_date(char *file)
+{
+    struct stat s;
+    if (stat(file, &s))
+    {
+        return (time_t) 0;
+    }
+    return s.st_mtime;
+}
 static bool
 build_file(char *cSource, buildinfo_t info, bool isTool)
 {
@@ -384,6 +400,14 @@ build_file(char *cSource, buildinfo_t info, bool isTool)
     }
     mkdir_rec(oFileName);
 
+    if (!isTool && (mod_date(cSource) < mod_date(oFileName)))
+    {
+        free(objPath);
+        free(oFileName);
+        free(oFile);
+        return true;
+    }
+
     args[i++]   = Compiler(info);
     if (isTool)
     {
diff --git a/build.conf b/build.conf
index b64d366..b3ce98b 100644
--- a/build.conf
+++ b/build.conf
@@ -5,4 +5,4 @@ BINARY=parsee
 SOURCE=src
 INCLUDES=src/include
 OBJECT=build
-CC=tcc
+CC=cc