diff -ru ../Glide3.orig/swlibs/include/make/3dfx.mak ./swlibs/include/make/3dfx.mak
--- ../Glide3.orig/swlibs/include/make/3dfx.mak	Sat Nov 18 08:00:37 2000
+++ ./swlibs/include/make/3dfx.mak	Sun Jan 13 16:13:53 2002
@@ -133,15 +133,11 @@
 ifeq "$(OS)" "FreeBSD"
 GCINCS	       = -I. -I$(BUILD_ROOT_SWLIBS)/include -I$(BUILD_ROOT_HW)/include -I/usr/X11R6/include
 GCOPTS	       = -Wall
-# 
-# BIG_OPT Indicates O3(?) or better is being used. It changes the
-# assembly language in grDrawTriangle. Larger optimization removes
-# an extra push in the calling sequence.
-#
-CNODEBUG       = -O6 -m486 -fomit-frame-pointer -funroll-loops \
-	-fexpensive-optimizations -ffast-math -DBIG_OPT
 
-CDEBUG	       = -g -O
+# Set CNODEBUG and CDEBUG to nothing to respect CFLAGS
+
+CNODEBUG       = 
+CDEBUG	       = 
 # Profiling
 #CDEBUG	       = -pg -g -O
 #GCDEFS	       =
@@ -166,7 +162,7 @@
 LCFLAGS	= $(LCINCS) $(LCDEFS) $(LCOPTS)
 VCFLAGS	= $(VCINCS) $(VCDEFS) $(VCOPTS)
 
-CFLAGS	= $(CDEBUG) $(GCFLAGS) $(LCFLAGS) $(VCFLAGS)
+CFLAGS	+= $(CDEBUG) $(GCFLAGS) $(LCFLAGS) $(VCFLAGS)
 
 #--------------------------------------------------------------------------
 # build up global linker flags (LDFLAGS) and libraries (LDLIBS)