diff --git a/CMakeLists.txt b/CMakeLists.txt
index c40df4c..60921b4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -37,12 +37,16 @@ IF(NEED_LIB_M)
   SET(MAIKO_LIBRARIES m)
 ENDIF()
 
+SET (MAIKO_RELEASE 351 CACHE STRING "Release version to build. Release: 115, 200, 201, 210, 300, 350, 351")
+SET_PROPERTY(CACHE MAIKO_RELEASE PROPERTY STRINGS 115 200 201 210 300 350 351)
+
+MESSAGE("-- Configured for release ${MAIKO_RELEASE}")
 SET(MAIKO_DEFINITIONS
-    "-DRELEASE=351"
+    "-DRELEASE=${MAIKO_RELEASE}"
 )
 
 SET(MAIKO_INIT_DEFINITIONS
-    "-DRELEASE=351" "-DINIT" "-DNOVERSION"
+    "-DRELEASE=${MAIKO_RELEASE}" "-DINIT" "-DNOVERSION"
 )
 
 OPTION(MAIKO_DISPLAY_X11 "Use X11 for display." ON)
diff --git a/bin/makefile-cygwin.x86_64-sdl b/bin/makefile-cygwin.x86_64-sdl
index 17a893e..28531eb 100644
--- a/bin/makefile-cygwin.x86_64-sdl
+++ b/bin/makefile-cygwin.x86_64-sdl
@@ -15,7 +15,7 @@ XFLAGS = -DSDL=2
 
 # OPTFLAGS is normally -O2.
 OPTFLAGS =  -O2 -g3
-DFLAGS = $(XFLAGS) -DRELEASE=351
+DFLAGS = $(XFLAGS) -DRELEASE=$(RELEASE)
 
 LDFLAGS = -lm -L/usr/local/lib -lSDL2
 #
diff --git a/bin/makefile-cygwin.x86_64-x b/bin/makefile-cygwin.x86_64-x
index f280cba..499d5d1 100644
--- a/bin/makefile-cygwin.x86_64-x
+++ b/bin/makefile-cygwin.x86_64-x
@@ -18,7 +18,7 @@ XFLAGS = -DXWINDOW
 
 # OPTFLAGS is normally -O2.
 OPTFLAGS =  -O2 -g3
-DFLAGS = $(XFLAGS) -DRELEASE=351
+DFLAGS = $(XFLAGS) -DRELEASE=$(RELEASE)
 
 LDFLAGS = -L/usr/X11/lib -lX11 -lc -lm
 LDELDFLAGS =  -L/usr/X11/lib -lX11 -lc -lm
diff --git a/bin/makefile-darwin.386-x b/bin/makefile-darwin.386-x
index abd20e8..8b6f487 100644
--- a/bin/makefile-darwin.386-x
+++ b/bin/makefile-darwin.386-x
@@ -19,7 +19,7 @@ XFLAGS = -I/opt/X11/include -DXWINDOW
 OPTFLAGS =  -O2 -g
 DEBUGFLAGS = # -DDEBUG -DOPTRACE
 DFLAGS = $(DEBUGFLAGS) $(XFLAGS) \
-	-DRELEASE=351 # -DSTACKCHECK -DFSBCHECK -DPCTRACE
+	-DRELEASE=$(RELEASE) # -DSTACKCHECK -DFSBCHECK -DPCTRACE
 
 LDFLAGS = -L/opt/X11/lib -lX11 -lm
 LDELDFLAGS =  -L/opt/X11/lib -lX11 -lm
diff --git a/bin/makefile-darwin.aarch64-sdl b/bin/makefile-darwin.aarch64-sdl
index d55bf66..30df940 100644
--- a/bin/makefile-darwin.aarch64-sdl
+++ b/bin/makefile-darwin.aarch64-sdl
@@ -16,7 +16,7 @@ SDLFLAGS = -DSDL=2 -F /Library/Frameworks
 # OPTFLAGS is normally -O2.
 OPTFLAGS =  -O2 -g
 DEBUGFLAGS = # -DDEBUG -DOPTRACE
-DFLAGS = $(DEBUGFLAGS) $(SDLFLAGS) -DRELEASE=351
+DFLAGS = $(DEBUGFLAGS) $(SDLFLAGS) -DRELEASE=$(RELEASE)
 
 LDFLAGS = -rpath /Library/Frameworks -F /Library/Frameworks -framework SDL2
 LDELDFLAGS =
diff --git a/bin/makefile-darwin.aarch64-x b/bin/makefile-darwin.aarch64-x
index 867eb5d..37da65e 100644
--- a/bin/makefile-darwin.aarch64-x
+++ b/bin/makefile-darwin.aarch64-x
@@ -18,7 +18,7 @@ XFLAGS = -I/opt/X11/include -DXWINDOW
 # OPTFLAGS is normally -O2.
 OPTFLAGS =  -O2
 DEBUGFLAGS = # -DDEBUG -DOPTRACE
-DFLAGS = $(DEBUGFLAGS) $(XFLAGS) -DRELEASE=351
+DFLAGS = $(DEBUGFLAGS) $(XFLAGS) -DRELEASE=$(RELEASE)
 
 LDFLAGS = -L/opt/X11/lib -lX11 -lm
 LDELDFLAGS =  -L/opt/X11/lib -lX11 -lm
diff --git a/bin/makefile-darwin.ppc-x b/bin/makefile-darwin.ppc-x
index 50db58f..8914076 100644
--- a/bin/makefile-darwin.ppc-x
+++ b/bin/makefile-darwin.ppc-x
@@ -19,7 +19,7 @@ XFLAGS = -I/usr/X11/include -DXWINDOW
 OPTFLAGS =  -O2 -g
 DEBUGFLAGS = # -DDEBUG -DOPTRACE
 DFLAGS = $(DEBUGFLAGS) $(XFLAGS) \
-	-DRELEASE=351
+	-DRELEASE=$(RELEASE)
 
 LDFLAGS = -L/usr/X11/lib -lX11 -lm
 LDELDFLAGS =  -L/usr/X11/lib -lX11 -lm
diff --git a/bin/makefile-darwin.x86_64-sdl b/bin/makefile-darwin.x86_64-sdl
index 86d7a9c..3af48da 100644
--- a/bin/makefile-darwin.x86_64-sdl
+++ b/bin/makefile-darwin.x86_64-sdl
@@ -15,7 +15,7 @@ SDLFLAGS = -DSDL=2 -F /Library/Frameworks
 # OPTFLAGS is normally -O2.
 OPTFLAGS =  -O2 -g
 DEBUGFLAGS = # -DDEBUG -DOPTRACE
-DFLAGS = $(DEBUGFLAGS) $(SDLFLAGS) -DRELEASE=351
+DFLAGS = $(DEBUGFLAGS) $(SDLFLAGS) -DRELEASE=$(RELEASE)
 
 LDFLAGS = -rpath /Library/Frameworks -F /Library/Frameworks -framework SDL2
 LDELDFLAGS =
diff --git a/bin/makefile-darwin.x86_64-x b/bin/makefile-darwin.x86_64-x
index 54d61d4..35a6be8 100644
--- a/bin/makefile-darwin.x86_64-x
+++ b/bin/makefile-darwin.x86_64-x
@@ -18,7 +18,7 @@ XFLAGS = -I/opt/X11/include -DXWINDOW
 # OPTFLAGS is normally -O2.
 OPTFLAGS =  -O1 -g
 DEBUGFLAGS = # -DDEBUG -DOPTRACE
-DFLAGS = $(DEBUGFLAGS) $(XFLAGS) -DRELEASE=351
+DFLAGS = $(DEBUGFLAGS) $(XFLAGS) -DRELEASE=$(RELEASE)
 
 LDFLAGS = -L/opt/X11/lib -lX11 -lm
 LDELDFLAGS =  -L/opt/X11/lib -lX11 -lm
diff --git a/bin/makefile-emscripten.wasm-wasm b/bin/makefile-emscripten.wasm-wasm
index 48c91b4..37f213a 100644
--- a/bin/makefile-emscripten.wasm-wasm
+++ b/bin/makefile-emscripten.wasm-wasm
@@ -14,7 +14,7 @@ XFLAGS = -DSDL=2 -sUSE_SDL=2
 
 # OPTFLAGS is normally -O2.
 OPTFLAGS = -O2
-DFLAGS = $(XFLAGS) -DRELEASE=351 -DMAIKO_ENABLE_NETHUB
+DFLAGS = $(XFLAGS) -DRELEASE=$(RELEASE) -DMAIKO_ENABLE_NETHUB
 
 MEDLEY?=../../medley
 SYSOUT?=$(MEDLEY)/loadups/full.sysout
diff --git a/bin/makefile-emscripten.wasm_nl-wasm_nl b/bin/makefile-emscripten.wasm_nl-wasm_nl
index cf5a712..3ec7af1 100644
--- a/bin/makefile-emscripten.wasm_nl-wasm_nl
+++ b/bin/makefile-emscripten.wasm_nl-wasm_nl
@@ -14,7 +14,7 @@ XFLAGS = -DSDL=2 -sUSE_SDL=2
 
 # OPTFLAGS is normally -O2.
 OPTFLAGS = -O2
-DFLAGS = $(XFLAGS) -DRELEASE=351 -DMAIKO_ENABLE_NETHUB
+DFLAGS = $(XFLAGS) -DRELEASE=$(RELEASE) -DMAIKO_ENABLE_NETHUB
 
 MEDLEY?=../../medley
 SYSOUT?=$(MEDLEY)/loadups/full.sysout
diff --git a/bin/makefile-freebsd.386-sdl b/bin/makefile-freebsd.386-sdl
index 774acff..fffdabd 100644
--- a/bin/makefile-freebsd.386-sdl
+++ b/bin/makefile-freebsd.386-sdl
@@ -14,7 +14,7 @@ SDLFLAGS = -DSDL=2 -I/usr/local/include
 
 # OPTFLAGS is normally -O2.
 OPTFLAGS = -O2 -g
-DFLAGS = $(SDLFLAGS) -DRELEASE=351
+DFLAGS = $(SDLFLAGS) -DRELEASE=$(RELEASE)
 
 LDFLAGS = -L/usr/local/lib -lSDL2 -lm
 LDELDFLAGS =
diff --git a/bin/makefile-freebsd.386-x b/bin/makefile-freebsd.386-x
index fa98c63..bb42820 100644
--- a/bin/makefile-freebsd.386-x
+++ b/bin/makefile-freebsd.386-x
@@ -17,7 +17,7 @@ XFLAGS = -I/usr/local/include -DXWINDOW
 
 # OPTFLAGS is normally -O2.
 OPTFLAGS = -O2 -g
-DFLAGS = $(XFLAGS) -DRELEASE=351
+DFLAGS = $(XFLAGS) -DRELEASE=$(RELEASE)
 
 LDFLAGS = -L/usr/local/lib -lX11 -lc -lm
 LDELDFLAGS =  -L/usr/local/lib -lX11 -lc -lm
diff --git a/bin/makefile-freebsd.aarch64-sdl b/bin/makefile-freebsd.aarch64-sdl
index 51b3b69..fadb7e6 100644
--- a/bin/makefile-freebsd.aarch64-sdl
+++ b/bin/makefile-freebsd.aarch64-sdl
@@ -14,7 +14,7 @@ SDLFLAGS = -DSDL=2 -I/usr/local/include
 
 # OPTFLAGS is normally -O2.
 OPTFLAGS = -O2 -g
-DFLAGS = $(SDLFLAGS) -DRELEASE=351
+DFLAGS = $(SDLFLAGS) -DRELEASE=$(RELEASE)
 
 LDFLAGS = -L/usr/local/lib -lSDL2 -lm
 LDELDFLAGS =
diff --git a/bin/makefile-freebsd.aarch64-x b/bin/makefile-freebsd.aarch64-x
index 7318c9a..699bd2a 100644
--- a/bin/makefile-freebsd.aarch64-x
+++ b/bin/makefile-freebsd.aarch64-x
@@ -17,7 +17,7 @@ XFLAGS = -I/usr/local/include -DXWINDOW
 
 # OPTFLAGS is normally -O2.
 OPTFLAGS = -O2 -g
-DFLAGS = $(XFLAGS) -DRELEASE=351
+DFLAGS = $(XFLAGS) -DRELEASE=$(RELEASE)
 
 LDFLAGS = -L/usr/local/lib -lX11 -lc -lm
 LDELDFLAGS =  -L/usr/local/lib -lX11 -lc -lm
diff --git a/bin/makefile-freebsd.x86_64-sdl b/bin/makefile-freebsd.x86_64-sdl
index 4a5ba02..c04bb87 100644
--- a/bin/makefile-freebsd.x86_64-sdl
+++ b/bin/makefile-freebsd.x86_64-sdl
@@ -14,7 +14,7 @@ SDLFLAGS = -DSDL=2 -I/usr/local/include
 
 # OPTFLAGS is normally -O2.
 OPTFLAGS = -O2 -g
-DFLAGS = $(SDLFLAGS) -DRELEASE=351
+DFLAGS = $(SDLFLAGS) -DRELEASE=$(RELEASE)
 
 LDFLAGS = -L/usr/local/lib -lSDL2 -lm
 LDELDFLAGS =
diff --git a/bin/makefile-freebsd.x86_64-x b/bin/makefile-freebsd.x86_64-x
index 223ba40..1c17157 100644
--- a/bin/makefile-freebsd.x86_64-x
+++ b/bin/makefile-freebsd.x86_64-x
@@ -17,7 +17,7 @@ XFLAGS = -I/usr/local/include -DXWINDOW
 
 # OPTFLAGS is normally -O2.
 OPTFLAGS = -O2 -g
-DFLAGS = $(XFLAGS) -DRELEASE=351
+DFLAGS = $(XFLAGS) -DRELEASE=$(RELEASE)
 
 LDFLAGS = -L/usr/local/lib -lX11 -lc -lm
 LDELDFLAGS =  -L/usr/local/lib -lX11 -lc -lm
diff --git a/bin/makefile-haiku.x86_64-sdl b/bin/makefile-haiku.x86_64-sdl
index 57ddedd..7b72dec 100644
--- a/bin/makefile-haiku.x86_64-sdl
+++ b/bin/makefile-haiku.x86_64-sdl
@@ -15,7 +15,7 @@ XFLAGS = -DSDL=2
 
 # OPTFLAGS is normally -O2.
 OPTFLAGS =  -O2 -g3
-DFLAGS = $(XFLAGS) -DRELEASE=351
+DFLAGS = $(XFLAGS) -DRELEASE=$(RELEASE)
 
 LDFLAGS =  -lSDL2 -lnetwork
 LDELDFLAGS = -lnetwork -lbsd
diff --git a/bin/makefile-init-darwin.386 b/bin/makefile-init-darwin.386
index c7aaa62..862ab12 100644
--- a/bin/makefile-init-darwin.386
+++ b/bin/makefile-init-darwin.386
@@ -18,7 +18,7 @@ XFLAGS = -I/opt/X11/include -DXWINDOW
 # OPTFLAGS is normally -O2, for INIT we want unoptimized in case we need to debug it
 OPTFLAGS =  -O0 -g
 DEBUGFLAGS =
-DFLAGS = $(DEBUGFLAGS) $(XFLAGS) -DRELEASE=351 -DNOVERSION -DINIT
+DFLAGS = $(DEBUGFLAGS) $(XFLAGS) -DRELEASE=$(RELEASE) -DNOVERSION -DINIT
 
 LDFLAGS = -L/usr/X11/lib -lX11 -lm
 LDELDFLAGS =  -L/usr/X11/lib -lX11 -lm
diff --git a/bin/makefile-init-darwin.aarch64 b/bin/makefile-init-darwin.aarch64
index 65cdfb3..feee458 100644
--- a/bin/makefile-init-darwin.aarch64
+++ b/bin/makefile-init-darwin.aarch64
@@ -18,7 +18,7 @@ XFLAGS = -I/opt/X11/include -DXWINDOW
 # OPTFLAGS is normally -O2.
 OPTFLAGS =  -O0 -g3
 DEBUGFLAGS = # -DDEBUG -DOPTRACE
-DFLAGS = $(DEBUGFLAGS) $(XFLAGS) -DRELEASE=351 -DNOVERSION -DINIT
+DFLAGS = $(DEBUGFLAGS) $(XFLAGS) -DRELEASE=$(RELEASE) -DNOVERSION -DINIT
 
 LDFLAGS = -L/opt/X11/lib -lX11 -lm
 LDELDFLAGS = -L/opt/X11/lib -lX11 -lm
diff --git a/bin/makefile-init-darwin.x86_64 b/bin/makefile-init-darwin.x86_64
index 71288cf..fa669bc 100644
--- a/bin/makefile-init-darwin.x86_64
+++ b/bin/makefile-init-darwin.x86_64
@@ -18,7 +18,7 @@ XFLAGS = -I/opt/X11/include -DXWINDOW
 # OPTFLAGS is normally -O2.
 OPTFLAGS =  -O0 -g
 DEBUGFLAGS = # -DDEBUG -DOPTRACE
-DFLAGS = $(DEBUGFLAGS) $(XFLAGS) -DRELEASE=351 -DNOVERSION -DINIT
+DFLAGS = $(DEBUGFLAGS) $(XFLAGS) -DRELEASE=$(RELEASE) -DNOVERSION -DINIT
 
 LDFLAGS = -L/opt/X11/lib -lX11 -lm
 LDELDFLAGS =  -L/opt/X11/lib -lX11 -lm
diff --git a/bin/makefile-init-freebsd.386 b/bin/makefile-init-freebsd.386
index ffb691b..a216d97 100644
--- a/bin/makefile-init-freebsd.386
+++ b/bin/makefile-init-freebsd.386
@@ -17,7 +17,7 @@ XFLAGS = -I/usr/local/include -DXWINDOW
 
 # OPTFLAGS is normally -O0 for init
 OPTFLAGS = -O0 -g
-DFLAGS = $(XFLAGS) -DRELEASE=351 -DNOVERSION -DINIT
+DFLAGS = $(XFLAGS) -DRELEASE=$(RELEASE) -DNOVERSION -DINIT
 
 LDFLAGS = -L/usr/local/lib -lX11 -lc -lm
 LDELDFLAGS =  -L/usr/local/lib -lX11 -lc -lm
diff --git a/bin/makefile-init-freebsd.aarch64 b/bin/makefile-init-freebsd.aarch64
index be70868..0069df9 100644
--- a/bin/makefile-init-freebsd.aarch64
+++ b/bin/makefile-init-freebsd.aarch64
@@ -17,7 +17,7 @@ XFLAGS = -I/usr/local/include -DXWINDOW
 
 # OPTFLAGS is normally -O0 for init
 OPTFLAGS = -O0 -g
-DFLAGS = $(XFLAGS) -DRELEASE=351 -DNOVERSION -DINIT
+DFLAGS = $(XFLAGS) -DRELEASE=$(RELEASE) -DNOVERSION -DINIT
 
 LDFLAGS = -L/usr/local/lib -lX11 -lc -lm
 LDELDFLAGS =  -L/usr/local/lib -lX11 -lc -lm
diff --git a/bin/makefile-init-freebsd.x86_64 b/bin/makefile-init-freebsd.x86_64
index 8da5044..e303dcf 100644
--- a/bin/makefile-init-freebsd.x86_64
+++ b/bin/makefile-init-freebsd.x86_64
@@ -17,7 +17,7 @@ XFLAGS = -I/usr/local/include -DXWINDOW
 
 # OPTFLAGS is normally -O0 for init
 OPTFLAGS = -O0 -g
-DFLAGS = $(XFLAGS) -DRELEASE=351 -DNOVERSION -DINIT
+DFLAGS = $(XFLAGS) -DRELEASE=$(RELEASE) -DNOVERSION -DINIT
 
 LDFLAGS = -L/usr/local/lib -lX11 -lc -lm
 LDELDFLAGS =  -L/usr/local/lib -lX11 -lc -lm
diff --git a/bin/makefile-init-linux.aarch64 b/bin/makefile-init-linux.aarch64
index f750561..52ab52b 100644
--- a/bin/makefile-init-linux.aarch64
+++ b/bin/makefile-init-linux.aarch64
@@ -19,7 +19,7 @@ XFLAGS = -DXWINDOW
 # OPTFLAGS is normally -O2, for INIT we want unoptimized in case we need to debug it
 OPTFLAGS =  -O0 -g
 DEBUGFLAGS =
-DFLAGS = $(DEBUGFLAGS) $(XFLAGS) -DRELEASE=351 -DNOVERSION -DINIT
+DFLAGS = $(DEBUGFLAGS) $(XFLAGS) -DRELEASE=$(RELEASE) -DNOVERSION -DINIT
 
 LDFLAGS = -L/usr/X11/lib -lX11 -lc -lm
 LDELDFLAGS =  -L/usr/X11/lib -lX11 -lc -lm
diff --git a/bin/makefile-init-linux.x86_64 b/bin/makefile-init-linux.x86_64
index 89bcfac..8eeb208 100644
--- a/bin/makefile-init-linux.x86_64
+++ b/bin/makefile-init-linux.x86_64
@@ -19,7 +19,7 @@ XFLAGS = -DXWINDOW
 # OPTFLAGS is normally -O2, for INIT we want unoptimized in case we need to debug it
 OPTFLAGS =  -O0 -g
 DEBUGFLAGS =
-DFLAGS = $(DEBUGFLAGS) $(XFLAGS) -DRELEASE=351 -DNOVERSION -DINIT
+DFLAGS = $(DEBUGFLAGS) $(XFLAGS) -DRELEASE=$(RELEASE) -DNOVERSION -DINIT
 
 LDFLAGS = -L/usr/X11/lib -lX11 -lc -lm
 LDELDFLAGS =  -L/usr/X11/lib -lX11 -lc -lm
diff --git a/bin/makefile-init-openbsd.x86_64 b/bin/makefile-init-openbsd.x86_64
index 3267621..facc9a0 100644
--- a/bin/makefile-init-openbsd.x86_64
+++ b/bin/makefile-init-openbsd.x86_64
@@ -17,7 +17,7 @@ XFLAGS = -I/usr/X11R6/include -DXWINDOW
 
 # OPTFLAGS is normally -O2.
 OPTFLAGS =  -O2 -g3
-DFLAGS = $(XFLAGS) -DRELEASE=351 -DNOVERSION -DINIT
+DFLAGS = $(XFLAGS) -DRELEASE=$(RELEASE) -DNOVERSION -DINIT
 
 LDFLAGS = -L/usr/X11R6/lib -lX11 -lc -lm
 LDELDFLAGS =  -L/usr/X11R6/lib -lX11 -lc -lm
diff --git a/bin/makefile-init-sunos5.sparc b/bin/makefile-init-sunos5.sparc
index b75871b..60ac765 100644
--- a/bin/makefile-init-sunos5.sparc
+++ b/bin/makefile-init-sunos5.sparc
@@ -50,7 +50,7 @@ DFLAGS = -DINIT \
 	 $(XFLAGS) \
 	 $(DEBUGFLAGS) \
 	 $(MACHINEFLAGS) \
-	 -DNOVERSION -DRELEASE=351 
+	 -DNOVERSION -DRELEASE=$(RELEASE) 
 
 
 LDFLAGS = -lX11 -lc -lm -lsocket -lnsl
diff --git a/bin/makefile-linux.386-sdl b/bin/makefile-linux.386-sdl
index 39bea78..733f3c7 100644
--- a/bin/makefile-linux.386-sdl
+++ b/bin/makefile-linux.386-sdl
@@ -15,7 +15,7 @@ XFLAGS = -DSDL=2
 
 # OPTFLAGS is normally -O2.
 OPTFLAGS =  -O2 -g3
-DFLAGS = $(XFLAGS) -DRELEASE=351
+DFLAGS = $(XFLAGS) -DRELEASE=$(RELEASE)
 
 LDFLAGS = -lm -lSDL2
 LDELDFLAGS =
diff --git a/bin/makefile-linux.386-x b/bin/makefile-linux.386-x
index 5250683..e733b9a 100644
--- a/bin/makefile-linux.386-x
+++ b/bin/makefile-linux.386-x
@@ -17,7 +17,7 @@ XFLAGS = -DXWINDOW
 
 # OPTFLAGS is normally -O2.
 OPTFLAGS =  -O2 -g3
-DFLAGS = $(XFLAGS) -DRELEASE=351
+DFLAGS = $(XFLAGS) -DRELEASE=$(RELEASE)
 
 LDFLAGS = -L/usr/X11/lib -lX11 -lc -lm
 LDELDFLAGS =  -L/usr/X11/lib -lX11 -lc -lm
diff --git a/bin/makefile-linux.aarch64-sdl b/bin/makefile-linux.aarch64-sdl
index b87f0c1..94b719c 100644
--- a/bin/makefile-linux.aarch64-sdl
+++ b/bin/makefile-linux.aarch64-sdl
@@ -15,7 +15,7 @@ SDLFLAGS = -DSDL=2
 
 # OPTFLAGS is normally -O2.
 OPTFLAGS =  -O2 -g3
-DFLAGS = $(SDLFLAGS) -DRELEASE=351
+DFLAGS = $(SDLFLAGS) -DRELEASE=$(RELEASE)
 
 LDFLAGS = -lSDL2 -lm
 LDELDFLAGS =
diff --git a/bin/makefile-linux.aarch64-x b/bin/makefile-linux.aarch64-x
index ac16213..ff0b349 100644
--- a/bin/makefile-linux.aarch64-x
+++ b/bin/makefile-linux.aarch64-x
@@ -17,7 +17,7 @@ XFLAGS = -DXWINDOW
 
 # OPTFLAGS is normally -O2.
 OPTFLAGS =  -O2 -g3
-DFLAGS = $(XFLAGS) -DRELEASE=351
+DFLAGS = $(XFLAGS) -DRELEASE=$(RELEASE)
 
 LDFLAGS = -L/usr/X11/lib -lX11 -lc -lm
 LDELDFLAGS =  -L/usr/X11/lib -lX11 -lc -lm
diff --git a/bin/makefile-linux.armv7l-sdl b/bin/makefile-linux.armv7l-sdl
index a1adbe3..da9c4cc 100644
--- a/bin/makefile-linux.armv7l-sdl
+++ b/bin/makefile-linux.armv7l-sdl
@@ -15,7 +15,7 @@ XFLAGS = -DSDL=2
 
 # OPTFLAGS is normally -O2.
 OPTFLAGS =  -O2 -g3
-DFLAGS = $(XFLAGS) -DRELEASE=351
+DFLAGS = $(XFLAGS) -DRELEASE=$(RELEASE)
 
 LDFLAGS = -lm -lSDL2
 LDELDFLAGS =
diff --git a/bin/makefile-linux.armv7l-x b/bin/makefile-linux.armv7l-x
index 1f2f156..ee283b4 100644
--- a/bin/makefile-linux.armv7l-x
+++ b/bin/makefile-linux.armv7l-x
@@ -17,7 +17,7 @@ XFLAGS = -DXWINDOW
 
 # OPTFLAGS is normally -O2.
 OPTFLAGS =  -O2 -g3
-DFLAGS = $(XFLAGS) -DRELEASE=351
+DFLAGS = $(XFLAGS) -DRELEASE=$(RELEASE)
 
 LDFLAGS = -L/usr/X11/lib -lX11 -lc -lm
 LDELDFLAGS =  -L/usr/X11/lib -lX11 -lc -lm
diff --git a/bin/makefile-linux.x86_64-sdl b/bin/makefile-linux.x86_64-sdl
index 0595b63..ccf98c3 100644
--- a/bin/makefile-linux.x86_64-sdl
+++ b/bin/makefile-linux.x86_64-sdl
@@ -15,7 +15,7 @@ XFLAGS = -DSDL=2
 
 # OPTFLAGS is normally -O2.
 OPTFLAGS =  -O2 -g3
-DFLAGS = $(XFLAGS) -DRELEASE=351
+DFLAGS = $(XFLAGS) -DRELEASE=$(RELEASE)
 
 LDFLAGS = -lm -lSDL2
 LDELDFLAGS =
diff --git a/bin/makefile-linux.x86_64-x b/bin/makefile-linux.x86_64-x
index 64c3eb0..e9225aa 100644
--- a/bin/makefile-linux.x86_64-x
+++ b/bin/makefile-linux.x86_64-x
@@ -18,7 +18,7 @@ XFLAGS = -DXWINDOW
 
 # OPTFLAGS is normally -O2.
 OPTFLAGS =  -O2 -g3
-DFLAGS = $(XFLAGS) -DRELEASE=351
+DFLAGS = $(XFLAGS) -DRELEASE=$(RELEASE)
 
 LDFLAGS = -L/usr/X11/lib -lX11 -lc -lm
 LDELDFLAGS =  -L/usr/X11/lib -lX11 -lc -lm
diff --git a/bin/makefile-openbsd.x86_64-x b/bin/makefile-openbsd.x86_64-x
index b95e5f5..9624f31 100644
--- a/bin/makefile-openbsd.x86_64-x
+++ b/bin/makefile-openbsd.x86_64-x
@@ -17,7 +17,7 @@ XFLAGS = -I/usr/X11R6/include -DXWINDOW
 
 # OPTFLAGS is normally -O2.
 OPTFLAGS =  -O2 -g3
-DFLAGS = $(XFLAGS) -DRELEASE=351
+DFLAGS = $(XFLAGS) -DRELEASE=$(RELEASE)
 
 LDFLAGS = -L/usr/X11R6/lib -lX11 -lc -lm
 LDELDFLAGS =  -L/usr/X11R6/lib -lX11 -lc -lm
diff --git a/bin/makefile-sunos5.386-x b/bin/makefile-sunos5.386-x
index 22bedc6..108712d 100644
--- a/bin/makefile-sunos5.386-x
+++ b/bin/makefile-sunos5.386-x
@@ -36,7 +36,7 @@ DEBUGFLAGS = # -DSTACKCHECK -DFNSTKCHECK
 DFLAGS = $(XFLAGS) \
 	 $(DEBUGFLAGS) \
 	-DOS5 \
-	-DRELEASE=351
+	-DRELEASE=$(RELEASE)
 
 LDFLAGS = -L/usr/X11/lib -lX11 -lc -lm -lsocket -lnsl
 LDELDFLAGS = -L/usr/X11/lib -lX11  -lc -lm -lsocket -lnsl
diff --git a/bin/makefile-sunos5.sparc-x b/bin/makefile-sunos5.sparc-x
index cca4965..ed266c4 100644
--- a/bin/makefile-sunos5.sparc-x
+++ b/bin/makefile-sunos5.sparc-x
@@ -45,7 +45,7 @@ MACHINEFLAGS = -DOS5 -DUSE_DLPI
 DFLAGS = $(XFLAGS) \
 	 $(DEBUGFLAGS) \
 	 $(MACHINEFLAGS) \
-	 -DRELEASE=351
+	 -DRELEASE=$(RELEASE)
 
 LDFLAGS = -lX11 -lc -lm -lsocket -lnsl
 LDELDFLAGS = -lX11  -lc -lm -lsocket -lnsl
diff --git a/bin/makefile-sunos5.x86_64-x b/bin/makefile-sunos5.x86_64-x
index 8322b1b..5cc9cc4 100644
--- a/bin/makefile-sunos5.x86_64-x
+++ b/bin/makefile-sunos5.x86_64-x
@@ -37,7 +37,7 @@ DFLAGS = $(XFLAGS) \
 	 $(DEBUGFLAGS) \
 	-DOS5 \
 	-DUSE_DLPI \
-	-DRELEASE=351
+	-DRELEASE=$(RELEASE)
 
 LDFLAGS = -L/usr/X11/lib -lX11 -lc -lm -lsocket -lnsl
 LDELDFLAGS = -L/usr/X11/lib -lX11  -lc -lm -lsocket -lnsl
diff --git a/bin/makeright b/bin/makeright
index 08a68ea..69c06b3 100755
--- a/bin/makeright
+++ b/bin/makeright
@@ -54,9 +54,10 @@ if test $# -gt 0
 	shift
 fi
 
+: ${RELEASE=351}
 architecture=`machinetype`
 osversion=`osversion`
-echo "making so far for ${osversion} on ${architecture}."
+echo "making release ${RELEASE} for ${osversion} on ${architecture}."
 case "$display" in
 	init)	display=single
 		releasename=init-${osversion}.${architecture}
@@ -106,12 +107,12 @@ if [ ! -d ../${releasename} ]; then
     mkdir ../${releasename}
 fi
 
-echo start making lde for ${releasename}.
+echo start making lde for ${releasename}
 
 # then finally do the make, including the right stuff
 # With makefile-tail merged, this should only take ONE make command....
 
-make RELEASENAME=${releasename} LDENAME=${ldename} \
+make RELEASENAME=${releasename} RELEASE=${RELEASE} LDENAME=${ldename} \
 			OSARCHNAME=${osversion}.${architecture} \
 			-f makefile-header -f makefile-${releasename} \
 			-f makefile-tail $*
diff --git a/inc/gcdata.h b/inc/gcdata.h
index abcdb9f..ea35601 100644
--- a/inc/gcdata.h
+++ b/inc/gcdata.h
@@ -19,7 +19,6 @@
 /**********************************************************************/
 #include "lispemul.h" /* for LispPTR, DLword */
 #include "version.h" /* for USHORT */
-#include "gchtfinddefs.h"
 
 #define ADDREF  0       /* for gclookup routine. */
 #define DELREF  1       /* for gclookup routine. */
diff --git a/inc/gchtfinddefs.h b/inc/gchtfinddefs.h
index 20a5243..7616625 100644
--- a/inc/gchtfinddefs.h
+++ b/inc/gchtfinddefs.h
@@ -1,8 +1,9 @@
 #ifndef GCHTFINDDEFS_H
 #define GCHTFINDDEFS_H 1
 #include "lispemul.h" /* for LispPTR, DLword */
+#include "gcdata.h"   /* for GCENTRY */
 void enter_big_reference_count(LispPTR ptr);
-void modify_big_reference_count(LispPTR *entry, DLword casep, LispPTR ptr);
+void modify_big_reference_count(GCENTRY *entry, DLword casep, LispPTR ptr);
 LispPTR htfind(LispPTR ptr, int casep);
 LispPTR rec_htfind(LispPTR ptr, int casep);
 #endif
diff --git a/inc/my.h b/inc/my.h
index f193568..4a9fc3e 100644
--- a/inc/my.h
+++ b/inc/my.h
@@ -20,6 +20,7 @@
 #include "version.h"     // for BIGVM
 #include "adr68k.h"      // for NativeAligned2FromLAddr, NativeAligned4FromLAddr, LAddrFromNative
 #include "arith.h"       // for N_ARITH_SWITCH, N_GETNUMBER
+#include "gchtfinddefs.h"// for htfind, rec_htfind, from gcdata.h macros
 #include "gcdata.h"	 // for ADDREF, DELREF
 #include "lispemul.h"    // for ERROR_EXIT, LispPTR, DLword, SEGMASK, state
 #include "lispmap.h"     // for S_POSITIVE, S_CHARACTER, S_NEGATIVE
diff --git a/src/bbtsub.c b/src/bbtsub.c
index e824b09..d1a2232 100644
--- a/src/bbtsub.c
+++ b/src/bbtsub.c
@@ -49,7 +49,6 @@
 #include "stack.h"
 #include "return.h"
 #include "cell.h"
-#include "gcdata.h"
 
 #include "bbtsubdefs.h"
 #include "car-cdrdefs.h"
diff --git a/src/car-cdr.c b/src/car-cdr.c
index 1033382..b4fed46 100644
--- a/src/car-cdr.c
+++ b/src/car-cdr.c
@@ -38,6 +38,7 @@
 #include "conspagedefs.h"  // for next_conspage
 #include "emlglob.h"
 #include "gcdata.h"        // for GCLOOKUP, ADDREF, DELREF
+#include "gchtfinddefs.h"  // for htfind, rec_htfind
 #include "lispemul.h"      // for ConsCell, LispPTR, DLword, NIL_PTR, state
 #include "lspglob.h"       // for ListpDTD
 #include "lsptypes.h"      // for Listp, dtd
diff --git a/src/conspage.c b/src/conspage.c
index c503085..6b22e09 100644
--- a/src/conspage.c
+++ b/src/conspage.c
@@ -23,6 +23,7 @@
 #include "commondefs.h"    // for error
 #include "conspagedefs.h"  // for N_OP_cons, cons, next_conspage
 #include "gcdata.h"        // for GCLOOKUP, ADDREF, DELREF
+#include "gchtfinddefs.h"  // for htfind, rec_htfind
 #include "lispemul.h"      // for ConsCell, DLword, LispPTR, NIL_PTR, DLWORD...
 #include "lspglob.h"
 #include "lsptypes.h"      // for dtd, Listp, TYPE_LISTP
diff --git a/src/fvar.c b/src/fvar.c
index 2e06eb6..bb23ad5 100644
--- a/src/fvar.c
+++ b/src/fvar.c
@@ -15,6 +15,7 @@
 #include "emlglob.h"
 #include "fvardefs.h"      // for N_OP_fvar_, N_OP_fvarn, N_OP_stkscan, nati...
 #include "gcdata.h"        // for GCLOOKUP, ADDREF, DELREF
+#include "gchtfinddefs.h"  // for htfind, rec_htfind
 #include "lispmap.h"       // for ATOMS_HI, STK_HI
 #include "lspglob.h"       // for Stackspace
 #include "lsptypes.h"      // for DLword, LispPTR, GETBASEWORD, state, FRAME...
diff --git a/src/gc.c b/src/gc.c
index f73536d..ac5b775 100644
--- a/src/gc.c
+++ b/src/gc.c
@@ -12,6 +12,7 @@
 #include <stdio.h>         // for printf
 #include "emlglob.h"
 #include "gcdata.h"        // for GCLOOKUPV
+#include "gchtfinddefs.h"  // for htfind, rec_htfind
 #include "gcdefs.h"        // for OP_gcref
 #include "lspglob.h"
 #include "lsptypes.h"      // for state, ByteCode, PC, TopOfStack, Get_code_...
diff --git a/src/gccode.c b/src/gccode.c
index 01ac2c3..d054b8b 100644
--- a/src/gccode.c
+++ b/src/gccode.c
@@ -35,6 +35,7 @@
 #include "commondefs.h"  // for error
 #include "gccodedefs.h"  // for code_block_size, reclaimcodeblock
 #include "gcdata.h"      // for REC_GCLOOKUP, DELREF, ADDREF
+#include "gchtfinddefs.h" // for htfind, rec_htfind
 #include "lspglob.h"     // for Deleted_Implicit_Hash_Slot_word, UFNTable
 #include "lsptypes.h"    // for LispPTR, NIL, UFN, Get_code_BYTE, POINTERMASK
 #include "stack.h"       // for fnhead
diff --git a/src/gcfinal.c b/src/gcfinal.c
index 40ddca6..19f2434 100644
--- a/src/gcfinal.c
+++ b/src/gcfinal.c
@@ -49,6 +49,7 @@
 #include "commondefs.h"   // for error
 #include "gccodedefs.h"   // for reclaimcodeblock
 #include "gcdata.h"       // for DELREF, REC_GCLOOKUP
+#include "gchtfinddefs.h" // for htfind, rec_htfind
 #include "gcfinaldefs.h"  // for arrayblockmerger, checkarrayblock, deleteblock
 #include "lispemul.h"     // for LispPTR, NIL, T, POINTERMASK, DLword, ATOM_T
 #include "llstkdefs.h"    // for decusecount68k
diff --git a/src/gchtfind.c b/src/gchtfind.c
index d9fd474..19f0221 100644
--- a/src/gchtfind.c
+++ b/src/gchtfind.c
@@ -253,7 +253,7 @@ void enter_big_reference_count(LispPTR ptr) {
 /*									*/
 /************************************************************************/
 
-void modify_big_reference_count(LispPTR *entry, DLword casep, LispPTR ptr) {
+void modify_big_reference_count(GCENTRY *entry, DLword casep, LispPTR ptr) {
   struct gc_ovfl *oventry;
   LispPTR tmp;
 
diff --git a/src/gcmain3.c b/src/gcmain3.c
index f79f942..5baf19d 100644
--- a/src/gcmain3.c
+++ b/src/gcmain3.c
@@ -39,6 +39,7 @@
 #include "commondefs.h"   // for error
 #include "emlglob.h"
 #include "gcdata.h"       // for GCENTRY, REC_GCLOOKUP, STKREF, hashentry
+#include "gchtfinddefs.h" // for htfind, rec_htfind
 #include "gcmain3defs.h"  // for gcmapscan, gcmapunscan, gcscanstack
 #include "gcrcelldefs.h"  // for gcreccell
 #include "gcscandefs.h"   // for gcscan1, gcscan2
diff --git a/src/gcoflow.c b/src/gcoflow.c
index d92207d..6604554 100644
--- a/src/gcoflow.c
+++ b/src/gcoflow.c
@@ -31,6 +31,7 @@
 
 #include "arith.h"        // for GetSmalldata
 #include "gcdata.h"       // for htoverflow, REC_GCLOOKUP
+#include "gchtfinddefs.h"  // for htfind, rec_htfind
 #include "gcoflowdefs.h"  // for gc_handleoverflow, gcmaptable
 #include "gcrdefs.h"      // for doreclaim
 #include "lispemul.h"     // for NIL, DLword, LispPTR
diff --git a/src/gcrcell.c b/src/gcrcell.c
index 17040c7..5ee66fd 100644
--- a/src/gcrcell.c
+++ b/src/gcrcell.c
@@ -71,6 +71,7 @@
 #include "commondefs.h"   // for error
 #include "gccodedefs.h"   // for reclaimcodeblock
 #include "gcdata.h"       // for DELREF, REC_GCLOOKUPV, ADDREF, REC_GCLOOKUP
+#include "gchtfinddefs.h" // for htfind, rec_htfind
 #include "gcfinaldefs.h"  // for reclaimarrayblock, reclaimstackp, releasing...
 #include "gcrcelldefs.h"  // for freelistcell, gcreccell
 #include "lispemul.h"     // for LispPTR, ConsCell, NIL, POINTERMASK, DLword
diff --git a/src/gvar2.c b/src/gvar2.c
index 870bb25..41249cb 100644
--- a/src/gvar2.c
+++ b/src/gvar2.c
@@ -15,6 +15,7 @@
 #include "dbprint.h"     // for DEBUGGER
 #include "emlglob.h"
 #include "gcdata.h"      // for FRPLPTR
+#include "gchtfinddefs.h"  // for htfind, rec_htfind
 #include "gvar2defs.h"   // for N_OP_gvar_, N_OP_rplptr
 #include "lispemul.h"    // for LispPTR, DLword, NEWATOM_VALUE_OFFSET, NEWAT...
 #include "lspglob.h"     // for AtomSpace
diff --git a/src/initsout.c b/src/initsout.c
index aed4261..f0f6396 100644
--- a/src/initsout.c
+++ b/src/initsout.c
@@ -34,6 +34,7 @@
 #include "etherdefs.h"     // for init_ifpage_ether
 #include "gcarraydefs.h"   // for get_package_atom
 #include "gcdata.h"        // for ADDREF, GCLOOKUP
+#include "gchtfinddefs.h"  // for htfind, rec_htfind
 #include "ifpage.h"        // for IFPAGE, MACHINETYPE_MAIKO
 #include "initsoutdefs.h"  // for build_lisp_map, fixp_value, init_for_bitblt
 #include "iopage.h"        // for IOPAGE
diff --git a/src/loopsops.c b/src/loopsops.c
index 90e2c1e..779ecd9 100644
--- a/src/loopsops.c
+++ b/src/loopsops.c
@@ -25,6 +25,7 @@
 #include "commondefs.h"    // for error
 #include "gcarraydefs.h"   // for get_package_atom
 #include "gcdata.h"        // for FRPLPTR
+#include "gchtfinddefs.h"  // for htfind, rec_htfind
 #include "lispemul.h"      // for LispPTR, state, CurrentStackPTR, NIL_PTR, NIL
 #include "lispmap.h"       // for S_POSITIVE
 #include "loopsopsdefs.h"  // for lcfuncall, LCFetchMethod, LCFetchMethodOrHelp
diff --git a/src/mkcell.c b/src/mkcell.c
index f7d4896..e82e0f6 100644
--- a/src/mkcell.c
+++ b/src/mkcell.c
@@ -32,6 +32,7 @@
 #include "commondefs.h"    // for error
 #include "emlglob.h"
 #include "gcdata.h"        // for DELREF, GCLOOKUP
+#include "gchtfinddefs.h"  // for htfind, rec_htfind
 #include "lispemul.h"      // for LispPTR, DLword, NIL, POINTERMASK, state
 #include "lispmap.h"       // for S_POSITIVE
 #include "lspglob.h"
diff --git a/src/mvs.c b/src/mvs.c
index 4bbffaa..715206d 100644
--- a/src/mvs.c
+++ b/src/mvs.c
@@ -35,6 +35,7 @@
 #ifdef BIGVM
 #define SWA_FNHEAD
 #else
+#include "byteswapdefs.h" // for swapx
 #define SWA_FNHEAD swapx
 #endif /* BIGVM */
 
diff --git a/src/rplcons.c b/src/rplcons.c
index 7d72ae5..ff7e5ba 100644
--- a/src/rplcons.c
+++ b/src/rplcons.c
@@ -29,6 +29,11 @@
 #include "lspglob.h"
 #include "lsptypes.h"      // for Listp
 #include "rplconsdefs.h"   // for N_OP_rplcons
+#ifndef NEWCDRCODING
+#include "gcdata.h"
+#include "gchtfinddefs.h"  // for htfind, rec_htfind
+#include "address.h"
+#endif
 
 /***************************************************/
 
diff --git a/src/storage.c b/src/storage.c
index 9741781..8452138 100644
--- a/src/storage.c
+++ b/src/storage.c
@@ -23,6 +23,7 @@
 #include "commondefs.h"    // for error
 #include "conspagedefs.h"  // for cons
 #include "gcdata.h"        // for ADDREF, GCLOOKUP
+#include "gchtfinddefs.h"  // for htfind, rec_htfind
 #include "gcfinaldefs.h"   // for makefreearrayblock, mergebackward
 #include "ifpage.h"        // for IFPAGE, MACHINETYPE_MAIKO
 #include "lispemul.h"      // for LispPTR, NIL, GETFPTOVP, INTSTAT, ATOM_T