diff --git a/bin/makefile-darwin.386-x b/bin/makefile-darwin.386-x
index 5a756bb..aeab3ad 100755
--- a/bin/makefile-darwin.386-x
+++ b/bin/makefile-darwin.386-x
@@ -1,6 +1,6 @@
 # Options for MacOS, x86 processor, X windows
 
-CC = clang -m64 -std=gnu89 -funsigned-char
+CC = clang -m32 -std=gnu89 -funsigned-char -fno-strict-aliasing
 OEXT=.o
 
 XFILES = $(OBJECTDIR)xmkicon.o \
@@ -24,7 +24,7 @@ FPFLAGS =
 DEBUGFLAGS = # -DDEBUG -DOPTRACE
 DFLAGS = $(DEBUGFLAGS) -DFSERROR -DNEW_STORAGE -DMACOSX -DOLD_CURSOR -DUSETERMIOS \
 	-DBYTESWAP -DFORKCOMM -DNOFORN -DLOGINT  $(XFLAGS) \
-	-DRELEASE=351
+	-DRELEASE=351 -DSTACKCHECK -DFSBCHECK -DPCTRACE
 
 LDFLAGS = -L/usr/X11/lib -lX11 -lm
 LDELDFLAGS =  -L/usr/X11/lib -lX11 -lm
diff --git a/bin/makefile-darwin.x86_64-x b/bin/makefile-darwin.x86_64-x
index 15a0cb6..2436db9 100755
--- a/bin/makefile-darwin.x86_64-x
+++ b/bin/makefile-darwin.x86_64-x
@@ -1,6 +1,6 @@
 # Options for MacOS, x86 processor, X windows
 
-CC = clang -m64 -std=gnu89 -funsigned-char
+CC = clang -m64 -std=gnu89 -funsigned-char -fno-strict-aliasing
 OEXT=.o
 
 XFILES = $(OBJECTDIR)xmkicon.o \
diff --git a/bin/makefile-linux.386-x b/bin/makefile-linux.386-x
index d4ee52f..58da444 100755
--- a/bin/makefile-linux.386-x
+++ b/bin/makefile-linux.386-x
@@ -1,7 +1,7 @@
 # Options for Linux, Intel 386/486 and X-Window
 
 #CC = gcc -m32 -std=gnu89 -fno-omit-frame-pointer -Wall -Wextra -fwrapv -fno-aggressive-loop-optimizations -fno-strict-aliasing
-CC = clang -m32 -std=gnu89
+CC = clang -m32 -std=gnu89 -funsigned-char -fno-strict-aliasing
 XFILES = $(OBJECTDIR)xmkicon.o \
 	$(OBJECTDIR)xbbt.o \
 	$(OBJECTDIR)dspif.o \
diff --git a/bin/makefile-linux.armv7l-x b/bin/makefile-linux.armv7l-x
index d4ee52f..58da444 100755
--- a/bin/makefile-linux.armv7l-x
+++ b/bin/makefile-linux.armv7l-x
@@ -1,7 +1,7 @@
 # Options for Linux, Intel 386/486 and X-Window
 
 #CC = gcc -m32 -std=gnu89 -fno-omit-frame-pointer -Wall -Wextra -fwrapv -fno-aggressive-loop-optimizations -fno-strict-aliasing
-CC = clang -m32 -std=gnu89
+CC = clang -m32 -std=gnu89 -funsigned-char -fno-strict-aliasing
 XFILES = $(OBJECTDIR)xmkicon.o \
 	$(OBJECTDIR)xbbt.o \
 	$(OBJECTDIR)dspif.o \
diff --git a/bin/makefile-linux.x86_64-x b/bin/makefile-linux.x86_64-x
index bce1f88..df819dc 100755
--- a/bin/makefile-linux.x86_64-x
+++ b/bin/makefile-linux.x86_64-x
@@ -1,8 +1,8 @@
 # Options for Linux, Intel x86_64 and X-Window
 
 #CC = gcc -m64 -std=gnu89 -fno-omit-frame-pointer -Wall -Wextra -fwrapv -fno-aggressive-loop-optimizations -fno-strict-aliasing
+CC = clang -m64 -std=gnu89 -funsigned-char -fno-strict-aliasing
 
-CC = clang -m64 -std=gnu89
 XFILES = $(OBJECTDIR)xmkicon.o \
 	$(OBJECTDIR)xbbt.o \
 	$(OBJECTDIR)dspif.o \
diff --git a/bin/makefile-sunos5.386-x b/bin/makefile-sunos5.386-x
index e218151..92f10bc 100755
--- a/bin/makefile-sunos5.386-x
+++ b/bin/makefile-sunos5.386-x
@@ -10,7 +10,7 @@
 #*									*/
 #************************************************************************/
 
-CC = clang -m32 -std=gnu89 -funsigned-char
+CC = clang -m32 -std=gnu89 -funsigned-char -fno-strict-aliasing
 
 XFILES = $(OBJECTDIR)xmkicon.o \
 	$(OBJECTDIR)xbbt.o \