diff --git a/Quake/Makefile b/Quake/Makefile
index 65abbb6f..6ad9a724 100644
--- a/Quake/Makefile
+++ b/Quake/Makefile
@@ -1,4 +1,4 @@
-# GNU Makefile for QuakeSpasm unix targets, May 30, 2012
+# GNU Makefile for QuakeSpasm unix targets, Oct. 25, 2012
 # You need the SDL library fully installed.
 # "make DEBUG=1" to build a debug client.
 # "make SDL_CONFIG=/path/to/sdl-config" for unusual SDL installations.
@@ -18,22 +18,22 @@ MP3LIB=mad
 # which library to use for ogg decoding: vorbis or tremor
 VORBISLIB=vorbis
 
-# ============================================================================
+# ---------------------------
 # Helper functions
-# ============================================================================
+# ---------------------------
 
-check_gcc = $(shell if echo | $(CC) $(1) -S -o /dev/null -xc - > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi;)
+check_gcc = $(shell if echo | $(CC) $(1) -Werror -S -o /dev/null -xc - > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi;)
 
-# ============================================================================
+# ---------------------------
 
 HOST_OS := $(shell uname|sed -e s/_.*//|tr '[:upper:]' '[:lower:]')
 
 DEBUG   ?= 0
 SDLNET  ?= 0
 
-# ---------------------------------------
+# ---------------------------
 # build variables
-# ---------------------------------------
+# ---------------------------
 
 CC ?= gcc
 LINKER = $(CC)
diff --git a/Quake/Makefile.darwin b/Quake/Makefile.darwin
index c71d10c0..fbd77814 100644
--- a/Quake/Makefile.darwin
+++ b/Quake/Makefile.darwin
@@ -1,4 +1,4 @@
-# GNU Makefile for QuakeSpasm for Mac OS X, Sep. 05, 2012.
+# GNU Makefile for QuakeSpasm for Mac OS X, Oct. 25, 2012.
 # Usage: "make -f Makefile.darwin"
 # You need the SDL library fully installed.
 # "make DEBUG=1" to build a debug client.
@@ -19,13 +19,13 @@ MP3LIB=mad
 # which library to use for ogg decoding: vorbis or tremor
 VORBISLIB=vorbis
 
-# ============================================================================
+# ---------------------------
 # Helper functions
-# ============================================================================
+# ---------------------------
 
-check_gcc = $(shell if echo | $(CC) $(1) -S -o /dev/null -xc - > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi;)
+check_gcc = $(shell if echo | $(CC) $(1) -Werror -S -o /dev/null -xc - > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi;)
 
-# ============================================================================
+# ---------------------------
 
 HOST_OS := $(shell uname|sed -e s/_.*//|tr '[:upper:]' '[:lower:]')
 MACH_TYPE= $(shell sh detect.sh arch)
@@ -33,9 +33,9 @@ MACH_TYPE= $(shell sh detect.sh arch)
 DEBUG   ?= 0
 SDLNET  ?= 0
 
-# ---------------------------------------
+# ---------------------------
 # build variables
-# ---------------------------------------
+# ---------------------------
 
 CC ?= gcc
 LINKER = $(CC)
diff --git a/Quake/Makefile.w32 b/Quake/Makefile.w32
index b24c1ca1..0d836e93 100644
--- a/Quake/Makefile.w32
+++ b/Quake/Makefile.w32
@@ -1,5 +1,5 @@
 # GNU Makefile for cross-compiling quakespasm.exe (Win32: MinGW)
-# using cross-toolchains on a linux host, May 30, 2012
+# using cross-toolchains on a linux host, Oct. 25, 2012
 # "make DEBUG=1" to build a debug client.
 # "make SDL_CONFIG=/path/to/sdl-config" for unusual SDL installations.
 # "make WINSOCK2=1" to use WinSock2 api instead of old WinSock 1.1.
@@ -19,21 +19,21 @@ MP3LIB=mad
 # which library to use for ogg decoding: vorbis or tremor
 VORBISLIB=vorbis
 
-# ============================================================================
+# ---------------------------
 # Helper functions
-# ============================================================================
+# ---------------------------
 
-check_gcc = $(shell if echo | $(CC) $(1) -S -o /dev/null -xc - > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi;)
+check_gcc = $(shell if echo | $(CC) $(1) -Werror -S -o /dev/null -xc - > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi;)
 
-# ============================================================================
+# ---------------------------
 
 DEBUG   ?= 0
 WINSOCK2?= 0
 SDLNET  ?= 0
 
-# ---------------------------------------
+# ---------------------------
 # build variables
-# ---------------------------------------
+# ---------------------------
 
 TARGET=i686-pc-mingw32
 
diff --git a/Quake/Makefile.w64 b/Quake/Makefile.w64
index bdcf0c70..b67e06fa 100644
--- a/Quake/Makefile.w64
+++ b/Quake/Makefile.w64
@@ -1,5 +1,5 @@
 # GNU Makefile for cross-compiling quakespasm.exe (Win64: MinGW-w64)
-# using cross-toolchains on a linux host, May 30, 2012
+# using cross-toolchains on a linux host, Oct. 25, 2012
 # "make DEBUG=1" to build a debug client.
 # "make SDL_CONFIG=/path/to/sdl-config" for unusual SDL installations.
 # "make WINSOCK2=0" to use the old WinSock 1.1 api (NOT recommended).
@@ -19,21 +19,21 @@ MP3LIB=mad
 # which library to use for ogg decoding: vorbis or tremor
 VORBISLIB=vorbis
 
-# ============================================================================
+# ---------------------------
 # Helper functions
-# ============================================================================
+# ---------------------------
 
-check_gcc = $(shell if echo | $(CC) $(1) -S -o /dev/null -xc - > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi;)
+check_gcc = $(shell if echo | $(CC) $(1) -Werror -S -o /dev/null -xc - > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi;)
 
-# ============================================================================
+# ---------------------------
 
 DEBUG   ?= 0
 WINSOCK2?= 1
 SDLNET  ?= 0
 
-# ---------------------------------------
+# ---------------------------
 # build variables
-# ---------------------------------------
+# ---------------------------
 
 TARGET=x86_64-w64-mingw32