diff --git a/build_freetype.sh b/build_freetype.sh
index b081900..3ab8bba 100755
--- a/build_freetype.sh
+++ b/build_freetype.sh
@@ -1,11 +1,8 @@
 #!/bin/bash
 
-set -x
+. environment.sh
 
 FT_VERSION=2.4.8
-SDKVER=5.0
-DEVROOT=/Developer/Platforms/iPhoneOS.platform/Developer
-SDKROOT=$DEVROOT/SDKs/iPhoneOS$SDKVER.sdk
 
 if [ ! -d freetype-$FT_VERSION ]; then
 	curl -L http://download.savannah.gnu.org/releases/freetype/freetype-$FT_VERSION.tar.bz2 > freetype-$FT_VERSION.tar.bz2
@@ -19,8 +16,10 @@ fi
 # lib not found, compile it
 pushd .
 cd freetype-$FT_VERSION
-./configure --prefix=/usr/local/iphone --host=arm-apple-darwin --enable-static=yes --enable-shared=no CC=$DEVROOT/usr/bin/arm-apple-darwin10-llvm-gcc-4.2 AR=$DEVROOT/usr/bin/ar LDFLAGS="-isysroot $SDKROOT -miphoneos-version-min=$SDKVER" CFLAGS="-O2 -miphoneos-version-min=$SDKVER -isysroot $SDKROOT"
+./configure --prefix=/usr/local/iphone --host=arm-apple-darwin --enable-static=yes --enable-shared=no CC=$DEVROOT/usr/bin/arm-apple-darwin10-llvm-gcc-4.2 AR=$DEVROOT/usr/bin/ar LDFLAGS="-isysroot $SDKROOT -miphoneos-version-min=$SDKVER" CFLAGS="-O0 -g -miphoneos-version-min=$SDKVER -isysroot $SDKROOT"
 make clean
 make
-cp objs/.libs/libfreetype.a libfreetype-arm7.a
 
+# copy to buildroot
+cp objs/.libs/libfreetype.a $BUILDROOT/lib/libfreetype.a
+cp -a include $BUILDROOT/include/freetype
diff --git a/build_python.sh b/build_python.sh
index 52a5230..ab46907 100755
--- a/build_python.sh
+++ b/build_python.sh
@@ -1,4 +1,7 @@
 #!/bin/zsh
+
+. ./environment.sh
+
 set -o errexit
 set -x
 
@@ -164,4 +167,4 @@ lipo $PATH_DEV/lib/libpython2.7-arm.a $PATH_SIMU/lib/libpython2.7-i386.a -create
 find python2.7 | grep -E '*\.(py|pyc|so\.o|so\.a|so\.libs)$' | xargs rm
 find python2.7 | grep -E '*test*' | xargs rm -rdf
 
-
+cp $PATH_DEV/libpython2.7-arm.a $BUILDROOT/build/lib/
diff --git a/build_sdl.sh b/build_sdl.sh
index 3ae93a8..8f7de61 100755
--- a/build_sdl.sh
+++ b/build_sdl.sh
@@ -1,3 +1,8 @@
+#!/bin/bash
+. ./environmnent.sh
 pushd sdl/sdl1.3/Xcode-iPhoneOS/SDL
 xcodebuild -project SDLiPhoneOS.xcodeproj -alltargets
+popd
 #the binarie is under sdl/sdl1.3/Xcode-iPhoneOS/SDL/build/Release-Universal/
+cp sdl/sdl1.3/Xcode-iPhoneOS/SDL/build/Release-iPhoneOS/libSDL.a $BUILDROOT/lib
+cp -a sdl/sdl1.3/include $BUILDROOT/include/SDL 
diff --git a/build_sdlttf.sh b/build_sdlttf.sh
index 202fa8b..47058b5 100755
--- a/build_sdlttf.sh
+++ b/build_sdlttf.sh
@@ -1,11 +1,8 @@
 #!/bin/bash
 
-set -x
+. environment.sh
 
 SDLTTF_VERSION=2.0.10
-SDKVER=5.0
-DEVROOT=/Developer/Platforms/iPhoneOS.platform/Developer
-SDKROOT=$DEVROOT/SDKs/iPhoneOS$SDKVER.sdk
 
 if [ ! -d SDL_ttf-$SDLTTF_VERSION ]; then
 	curl -L http://www.libsdl.org/projects/SDL_ttf/release/SDL_ttf-$SDLTTF_VERSION.tar.gz > SDL_ttf-$SDLTTF_VERSION.tar.gz
@@ -17,12 +14,15 @@ if [ -f SDL_ttf-$SDLTTF_VERSION/libSDL_ttf-arm7.a ]; then
 fi
 
 
-cd SDL_ttf-2.0.10
+cd SDL_ttf-$SDLTTF_VERSION
 rm libSDL_ttf.la
 ./configure --prefix=/usr/local/iphone --host=arm-apple-darwin \
 	--enable-static=yes --enable-shared=no \
 	--without-x \
-	CC=$DEVROOT/usr/bin/arm-apple-darwin10-llvm-gcc-4.2 AR=$DEVROOT/usr/bin/ar LDFLAGS="-isysroot $SDKROOT -miphoneos-version-min=$SDKVER" CFLAGS="-O2 -miphoneos-version-min=$SDKVER -isysroot $SDKROOT"
+	CC=$DEVROOT/usr/bin/arm-apple-darwin10-llvm-gcc-4.2 AR=$DEVROOT/usr/bin/ar LDFLAGS="-isysroot $SDKROOT -miphoneos-version-min=$SDKVER" CFLAGS="-O0 -g -miphoneos-version-min=$SDKVER -isysroot $SDKROOT"
 make clean
 make libSDL_ttf.la
-cp .libs/libSDL_ttf.a libSDL_ttf-arm7.a
+
+# copy to buildroot
+cp .libs/libSDL_ttf.a $BUILDROOT/lib/libSDL_ttf.a
+cp -a SDL_ttf.h $BUILDROOT/include
diff --git a/environment.sh b/environment.sh
new file mode 100755
index 0000000..414f6fc
--- /dev/null
+++ b/environment.sh
@@ -0,0 +1,25 @@
+#!/bin/bash
+
+try () {
+	"$@" || exit -1
+}
+
+# iOS SDK Environmnent
+SDKVER=5.0
+DEVROOT=/Developer/Platforms/iPhoneOS.platform/Developer
+SDKROOT=$DEVROOT/SDKs/iPhoneOS$SDKVER.sdk
+
+# where the build will be located
+ROOT="$( cd -P "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+BUILDROOT="$ROOT/build"
+
+# for external project
+export KIVYIOSROOT="$ROOT"
+
+# create build directory if not found
+set -x
+if [ ! -d $BUILDROOT ]; then
+	try mkdir $BUILDROOT
+	try mkdir $BUILDROOT/include
+	try mkdir $BUILDROOT/lib
+fi