gcc: neverbuild, Buildroot can rebuild it :-)

userland/arch/x86_64/binutils_hack.c

@@ -1,3 +1,5 @@
+/* https://github.com/cirosantilli/linux-kernel-module-cheat#your-first-binutils-hack */
+
 #include <assert.h>
 #include <inttypes.h>
 

userland/gcc_hack.c

@@ -0,0 +1,13 @@
+/* https://github.com/cirosantilli/linux-kernel-module-cheat#your-first-gcc-hack */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(void) {
+    int i = 1;
+    int j = 1;
+    i++;
+    j--;
+    printf("i = %d\n", i);
+    printf("j = %d\n", j);
+}