diff --git a/.gitignore b/.gitignore
index 689ac85..57c6a0f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,3 @@
-newlib-*
-gcc-*
-binutils-*
-gmp-*
-mpfr-*
+build
 local
 *.tar
diff --git a/build.sh b/build.sh
index 87f9285..900af9f 100755
--- a/build.sh
+++ b/build.sh
@@ -1,6 +1,9 @@
 export TARGET=x86_64-pc-xomb
 export PREFIX=`pwd`/local
 
+mkdir -p build
+cd build
+
 BINUTILS_VER=2.20
 GCC_VER=4.3.3
 GMP_VER=5.0.1
@@ -100,3 +103,5 @@ cd newlib-obj
 make all
 make install
 cd ..
+
+cd ..