diff -ru gambatte_src-0.4.1/build_qt.sh gambatte_src-0.4.1.new/build_qt.sh
--- gambatte_src-0.4.1/build_qt.sh	2009-01-10 22:47:58.000000000 +0100
+++ gambatte_src-0.4.1.new/build_qt.sh	2010-04-20 09:28:35.403000002 +0200
@@ -1,7 +1,7 @@
 #!/bin/sh
 
-echo "cd libgambatte && scons"
-(cd libgambatte && scons) || exit
+echo "cd libgambatte && scons -j2"
+(cd libgambatte && scons -j2) || exit
 
-echo "cd gambatte_qt && qmake && make"
-(cd gambatte_qt && qmake && make)
+echo "cd gambatte_qt && qmake QMAKE_CFLAGS="-O2 -march=i486 -mtune=i686" QMAKE_CXXFLAGS="-O2 -march=i486 -mtune=i686" && make -j2"
+(cd gambatte_qt && qmake QMAKE_CFLAGS="-O2 -march=i486 -mtune=i686" QMAKE_CXXFLAGS="-O2 -march=i486 -mtune=i686" && make -j2)
diff -ru gambatte_src-0.4.1/build_sdl.sh gambatte_src-0.4.1.new/build_sdl.sh
--- gambatte_src-0.4.1/build_sdl.sh	2009-01-10 22:47:58.000000000 +0100
+++ gambatte_src-0.4.1.new/build_sdl.sh	2010-04-20 09:27:40.901000000 +0200
@@ -1,7 +1,7 @@
 #!/bin/sh
 
-echo "cd libgambatte && scons"
-(cd libgambatte && scons) || exit
+echo "cd libgambatte && scons -j2"
+(cd libgambatte && scons -j2) || exit
 
-echo "cd gambatte_sdl && scons"
-(cd gambatte_sdl && scons)
+echo "cd gambatte_sdl && scons -j2"
+(cd gambatte_sdl && scons -j2)
diff -ru gambatte_src-0.4.1/gambatte_qt/src/framework/audioengines/ossengine.cpp gambatte_src-0.4.1.new/gambatte_qt/src/framework/audioengines/ossengine.cpp
--- gambatte_src-0.4.1/gambatte_qt/src/framework/audioengines/ossengine.cpp	2009-01-10 20:52:02.000000000 +0100
+++ gambatte_src-0.4.1.new/gambatte_qt/src/framework/audioengines/ossengine.cpp	2010-04-20 09:38:18.314000002 +0200
@@ -24,6 +24,7 @@
 #include <sys/soundcard.h>
 
 #include <algorithm>
+#include <cstdio>
 #include <cmath>
 
 OssEngine::OssEngine() :
diff -ru gambatte_src-0.4.1/gambatte_sdl/SConstruct gambatte_src-0.4.1.new/gambatte_sdl/SConstruct
--- gambatte_src-0.4.1/gambatte_sdl/SConstruct	2009-01-10 22:47:57.000000000 +0100
+++ gambatte_src-0.4.1.new/gambatte_sdl/SConstruct	2010-04-20 09:25:33.363000002 +0200
@@ -1,4 +1,4 @@
-global_cflags = ARGUMENTS.get('CFLAGS', '-Wall -Wextra -O2 -fomit-frame-pointer')
+global_cflags = ARGUMENTS.get('CFLAGS', '-Wall -Wextra -O2 -march=i486 -mtune=i686 -fomit-frame-pointer')
 global_cxxflags = ARGUMENTS.get('CXXFLAGS', global_cflags + ' -fno-exceptions -fno-rtti')
 global_defines = ' -DHAVE_STDINT_H'
 
diff -ru gambatte_src-0.4.1/gambatte_sdl/src/gambatte_sdl.cpp gambatte_src-0.4.1.new/gambatte_sdl/src/gambatte_sdl.cpp
--- gambatte_src-0.4.1/gambatte_sdl/src/gambatte_sdl.cpp	2009-01-10 23:43:34.000000000 +0100
+++ gambatte_src-0.4.1.new/gambatte_sdl/src/gambatte_sdl.cpp	2010-04-20 09:25:33.396000002 +0200
@@ -26,6 +26,7 @@
 #include <string>
 #include <sstream>
 #include <algorithm>
+#include <cstdio>
 #include <memory>
 
 #include "audiodata.h"
diff -ru gambatte_src-0.4.1/libgambatte/SConstruct gambatte_src-0.4.1.new/libgambatte/SConstruct
--- gambatte_src-0.4.1/libgambatte/SConstruct	2009-01-10 22:47:58.000000000 +0100
+++ gambatte_src-0.4.1.new/libgambatte/SConstruct	2010-04-20 09:25:33.430000000 +0200
@@ -1,4 +1,4 @@
-global_cflags = ARGUMENTS.get('CFLAGS', '-Wall -Wextra -O2 -fomit-frame-pointer')
+global_cflags = ARGUMENTS.get('CFLAGS', '-Wall -Wextra -O2 -march=i486 -mtune=i686 -fomit-frame-pointer')
 global_cxxflags = ARGUMENTS.get('CXXFLAGS', global_cflags + ' -fno-exceptions -fno-rtti')
 global_defines = ' -DHAVE_STDINT_H -DCHAR_WIDTH_8'