diff -ru mupen64plus-extraplugins-src-1.99.4.old//mupen64plus-rsp-z64/projects/unix/Makefile mupen64plus-extraplugins-src-1.99.4/mupen64plus-rsp-z64/projects/unix/Makefile
--- mupen64plus-extraplugins-src-1.99.4.old//mupen64plus-rsp-z64/projects/unix/Makefile	2011-01-21 05:29:19.000000000 +0100
+++ mupen64plus-extraplugins-src-1.99.4/mupen64plus-rsp-z64/projects/unix/Makefile	2011-02-05 17:09:43.530000002 +0100
@@ -115,7 +115,7 @@
     ifeq ($(ARCH_DETECTED), 64BITS)
       CFLAGS += -pipe -O3 -march=athlon64
     else
-      CFLAGS += -pipe -O3 -mmmx -msse -march=i686 -mtune=pentium-m -fomit-frame-pointer
+      CFLAGS += -pipe -O2 -mmmx -msse -march=i686 -mtune=i686 -fomit-frame-pointer
     endif
   endif
 endif
diff -ru mupen64plus-extraplugins-src-1.99.4.old//mupen64plus-video-arachnoid/projects/unix/Makefile mupen64plus-extraplugins-src-1.99.4/mupen64plus-video-arachnoid/projects/unix/Makefile
--- mupen64plus-extraplugins-src-1.99.4.old//mupen64plus-video-arachnoid/projects/unix/Makefile	2011-01-21 05:29:00.000000000 +0100
+++ mupen64plus-extraplugins-src-1.99.4/mupen64plus-video-arachnoid/projects/unix/Makefile	2011-02-05 17:12:36.501000002 +0100
@@ -140,7 +140,7 @@
     ifeq ($(ARCH_DETECTED), 64BITS)
       CFLAGS += -march=athlon64
     else
-      CFLAGS += -mmmx -msse -march=i686 -mtune=pentium-m -fomit-frame-pointer
+      CFLAGS += -pipe -O2 -mmmx -msse -march=i686 -mtune=i686 -fomit-frame-pointer
     endif
     # tweak flags for 32-bit build on 64-bit system
     ifeq ($(ARCH_DETECTED), 64BITS_32)
diff -ru mupen64plus-extraplugins-src-1.99.4.old//mupen64plus-video-glide64/projects/unix/Makefile mupen64plus-extraplugins-src-1.99.4/mupen64plus-video-glide64/projects/unix/Makefile
--- mupen64plus-extraplugins-src-1.99.4.old//mupen64plus-video-glide64/projects/unix/Makefile	2011-01-21 05:29:08.000000000 +0100
+++ mupen64plus-extraplugins-src-1.99.4/mupen64plus-video-glide64/projects/unix/Makefile	2011-02-05 17:13:10.291000002 +0100
@@ -120,7 +120,7 @@
     ifeq ($(ARCH_DETECTED), 64BITS)
       CFLAGS += -pipe -O3 -march=athlon64
     else
-      CFLAGS += -pipe -O3 -mmmx -msse -march=i686 -mtune=pentium-m -fomit-frame-pointer
+      CFLAGS += -pipe -O2 -mmmx -msse -march=i686 -mtune=i686 -fomit-frame-pointer
     endif
   endif
 endif
diff -ru mupen64plus-extraplugins-src-1.99.4.old//mupen64plus-video-z64/projects/unix/Makefile mupen64plus-extraplugins-src-1.99.4/mupen64plus-video-z64/projects/unix/Makefile
--- mupen64plus-extraplugins-src-1.99.4.old//mupen64plus-video-z64/projects/unix/Makefile	2011-01-21 05:29:14.000000000 +0100
+++ mupen64plus-extraplugins-src-1.99.4/mupen64plus-video-z64/projects/unix/Makefile	2011-02-05 17:13:40.388000002 +0100
@@ -120,7 +120,7 @@
     ifeq ($(ARCH_DETECTED), 64BITS)
       CFLAGS += -pipe -O3 -march=athlon64
     else
-      CFLAGS += -pipe -O3 -mmmx -msse -march=i686 -mtune=pentium-m -fomit-frame-pointer
+      CFLAGS += -pipe -O2 -mmmx -msse -march=i686 -mtune=i686 -fomit-frame-pointer
     endif
   endif
 endif