diff -Nru t50-5.8.2/CHANGELOG t50-5.8.3/CHANGELOG
--- t50-5.8.2/CHANGELOG	2018-09-10 21:58:33.000000000 +0000
+++ t50-5.8.3/CHANGELOG	2018-11-24 10:42:44.000000000 +0000
@@ -6,6 +6,9 @@
 - Bug fixed
 ! Known issue / missing feature
 
+T50 5.8.3 - Nov 24th, 2018
+  - Makefile now checks GCC version (5 or greater needed!)
+
 T50 5.8.2 - Sep 10th, 2018
  - cksum() RFC 1071 compliance and endianess fixes.
 
diff -Nru t50-5.8.2/debian/changelog t50-5.8.3/debian/changelog
--- t50-5.8.2/debian/changelog	2018-11-12 14:39:00.000000000 +0000
+++ t50-5.8.3/debian/changelog	2018-11-29 23:10:19.000000000 +0000
@@ -1,3 +1,10 @@
+t50 (5.8.3-1) unstable; urgency=medium
+
+  * New upstream version 5.8.3
+  * Rework patches for new upstream version.
+
+ -- Marcos Fouces <marcos.fouces@gmail.com>  Fri, 30 Nov 2018 00:10:19 +0100
+
 t50 (5.8.2-3) unstable; urgency=high
 
   * d/p/01_Fix-Makefile.patch: Update to remove march-native flag,
diff -Nru t50-5.8.2/debian/patches/01_Fix-Makefile.patch t50-5.8.3/debian/patches/01_Fix-Makefile.patch
--- t50-5.8.2/debian/patches/01_Fix-Makefile.patch	2018-11-12 14:39:00.000000000 +0000
+++ t50-5.8.3/debian/patches/01_Fix-Makefile.patch	2018-11-29 23:10:19.000000000 +0000
@@ -3,14 +3,12 @@
 ---
 This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
 
-Index: t50/Makefile
-===================================================================
---- t50.orig/Makefile
-+++ t50/Makefile
-@@ -13,13 +13,16 @@
- VERSION=5.8.2
+--- a/Makefile
++++ b/Makefile
+@@ -12,13 +12,15 @@
+ 
+ VERSION=5.8.3
  
- # Change it to clang if you feel lucky!
 -CC=gcc
 +CC      ?= gcc
  LD=$(CC)
@@ -20,15 +18,14 @@
 -LDFLAGS=
 -LDLIBS=
 +CFLAGS	+=-std=gnu11
-+LDFLAGS +=
++#LDFLAGS=
 +#LDLIBS=
-+
 +MANDIR  = $(DESTDIR)/usr/share/man/man8/
 +BINDIR  = $(DESTDIR)/usr/sbin/
  
- # Just define DEBUG environment var to compile for debugging:
- #
-@@ -35,12 +38,12 @@ else
+ # Check GCC version (must be 5 or greater)
+ # OBS: This makes compilation GCC dependent (cannot use clang).
+@@ -42,12 +44,12 @@
  
    # Options for x86-64
    ifeq ($(ARCHITECTURE),x86_64)
@@ -43,7 +40,7 @@
      LDFLAGS += -flto
    endif
  
-@@ -67,7 +70,7 @@ ifdef USE_ANSI
+@@ -74,7 +76,7 @@
  	CFLAGS += -DUSE_ANSI
  endif
  
@@ -52,7 +49,7 @@
  
  OBJECTS=\
  src/cidr.o \
-@@ -141,21 +144,15 @@ define checkifroot
+@@ -148,21 +150,15 @@
  endef
  
  # install and uninstall rules are very simple!
diff -Nru t50-5.8.2/Makefile t50-5.8.3/Makefile
--- t50-5.8.2/Makefile	2018-09-10 21:57:02.000000000 +0000
+++ t50-5.8.3/Makefile	2018-11-24 12:19:55.000000000 +0000
@@ -10,9 +10,8 @@
 #       This way you don't need anything other than this makefile to
 #       compile the project.
 
-VERSION=5.8.2
+VERSION=5.8.3
 
-# Change it to clang if you feel lucky!
 CC=gcc
 LD=$(CC)
 
@@ -21,6 +20,14 @@
 LDFLAGS=
 LDLIBS=
 
+# Check GCC version (must be 5 or greater)
+# OBS: This makes compilation GCC dependent (cannot use clang).
+#      If you are feeling lucky, comment these lines and change CC to 'clang'.
+GCCVERSION=$(shell expr "`gcc -dumpversion | sed -n 's/^\([0-9]\+\)\.*.*$$/\1/p'`" \>= 5)
+ifeq "$(GCCVERSION)" "0"
+  $(error "T50 will compile only with GCC 5 or greater")
+endif
+
 # Just define DEBUG environment var to compile for debugging:
 #
 # $ DEBUG=1 make
diff -Nru t50-5.8.2/src/include/configuration.h t50-5.8.3/src/include/configuration.h
--- t50-5.8.2/src/include/configuration.h	2018-09-10 21:57:02.000000000 +0000
+++ t50-5.8.3/src/include/configuration.h	2018-11-24 10:28:05.000000000 +0000
@@ -1,11 +1,15 @@
 #ifndef __CONFIGURATION_H_INCLUDED__
 #define __CONFIGURATION_H_INCLUDED__
 
+#if !defined(__GNUC__) && (__GNUC__ < 5) && (__STDC_VERSION__ < 201112)
+  #error "Need GCC 5 or greater, with C11 standard support, to compile!"
+#endif
+
 /* Name of package */
 #define PACKAGE "t50"
 
 /* Define to the version of this package. */
-#define PACKAGE_VERSION "5.8.2"
+#define PACKAGE_VERSION "5.8.3"
 
 /* Define to the address where bug reports for this package should be sent. */
 #define PACKAGE_BUGREPORT "t50-dev@googlegroups.com"
diff -Nru t50-5.8.2/src/include/t50_randomizer.h t50-5.8.3/src/include/t50_randomizer.h
--- t50-5.8.2/src/include/t50_randomizer.h	2018-09-03 12:55:58.000000000 +0000
+++ t50-5.8.3/src/include/t50_randomizer.h	2018-11-24 10:25:53.000000000 +0000
@@ -2,10 +2,7 @@
 #define __RANDOMIZER_H__
 
 #include <stdint.h>
-
-#if !defined(__GNUC__) || (__STDC_VERSION__ < 201112)
-  #error "Need GCC with C11 standard support to compile!"
-#endif
+#include <configuration.h>
 
 /* Randomizer macros and function */
 /* NOTE: int8_t, int16_t, int32_t are synonimous of
@@ -14,6 +11,7 @@
 /* Sometipes, v is a bitfield and NOT compatible with primitive types.
    Because of this, the default selector is necessary! */
 /* RANDOM call results have not endianess! */
+
 #define __RND(v) _Generic((v), \
                           _Bool: (!!(v) ? (v) : RANDOM()),           \
                           int8_t: (!!(v) ? (v) : RANDOM()),          \