diff --git a/README.md b/README.md
deleted file mode 100644
index 64182b7..0000000
--- a/README.md
+++ /dev/null
@@ -1,2 +0,0 @@
-# PlainOsBuilder
-
diff --git a/build.sh b/build.sh
new file mode 100755
index 0000000..4189a74
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,29 @@
+#!/bin/sh
+
+CC=cc
+RTFS=$(pwd)/rootfs
+mu_repo="https://git.macaw.me/8nl/micro-utils"
+ml_repo="git://git.musl-libc.org/musl"
+cc_repo="git://repo.or.cz/tinycc.git"
+
+#Tests
+for i in tests/*; do
+	if ! env CC=$CC $i; then
+		echo "Build failed"
+		exit 1
+	fi
+done
+
+#Clean
+./clean.sh
+
+#Make rootfs
+mkdir rootfs
+
+#Build system
+for i in stages/*; do
+	if ! env mu_repo=$mu_repo ml_repo=$ml_repo cc_repo=$cc_repo RTFS=$RTFS $i; then
+		echo "Build failed"
+		exit 1
+	fi
+done
diff --git a/clean.sh b/clean.sh
new file mode 100755
index 0000000..6534892
--- /dev/null
+++ b/clean.sh
@@ -0,0 +1,2 @@
+#!/bin/sh
+rm -rf rootfs src libc tcc
diff --git a/stages/0-download-src.sh b/stages/0-download-src.sh
new file mode 100755
index 0000000..986b870
--- /dev/null
+++ b/stages/0-download-src.sh
@@ -0,0 +1,10 @@
+#!/bin/sh
+
+echo "* Download micro-utils sources..."
+git clone $mu_repo src
+
+echo "* Download musl sources..."
+git clone $ml_repo libc
+
+echo "* Download tcc sources..."
+git clone $cc_repo tcc
diff --git a/stages/1-libc.sh b/stages/1-libc.sh
new file mode 100755
index 0000000..2a4ab87
--- /dev/null
+++ b/stages/1-libc.sh
@@ -0,0 +1,11 @@
+#!/bin/sh
+echo "* Build musl libc"
+
+cd libc
+
+make clean
+./configure CC=cc CFLAGS="-Os -s -pipe" --disable-warnings --disable-static --prefix=$RTFS
+make -j $(nproc)
+make install
+
+cd ..
diff --git a/stages/2-cross-compiler.sh b/stages/2-cross-compiler.sh
new file mode 100755
index 0000000..b08e7ba
--- /dev/null
+++ b/stages/2-cross-compiler.sh
@@ -0,0 +1,11 @@
+#!/bin/sh
+echo "* Build cross compiler"
+
+cd tcc
+
+make clean
+./configure --extra-cflags="-Os -s" --prefix=$RTFS/ --elfinterp=/lib/libc.so --config-musl --config-bcheck=no --enable-static
+make -j $(nproc)
+make install
+
+cd ..
diff --git a/stages/3-micro-utils.sh b/stages/3-micro-utils.sh
new file mode 100755
index 0000000..d9187d5
--- /dev/null
+++ b/stages/3-micro-utils.sh
@@ -0,0 +1,9 @@
+#!/bin/sh
+echo " * Build micro-utils"
+
+cd src
+
+env CC="$RTFS/bin/tcc" CFLAGS="-pedantic -Os -s -Wall -I $RTFS/include -L $RTFS/lib/tcc -L $RTFS/lib" ./build.sh
+mv bin/* $RTFS/bin
+
+cd ..
diff --git a/stages/4-host-compiler.sh b/stages/4-host-compiler.sh
new file mode 100755
index 0000000..04a8d3f
--- /dev/null
+++ b/stages/4-host-compiler.sh
@@ -0,0 +1,10 @@
+#!/bin/sh
+echo "* Build host compiler"
+
+cd tcc
+
+./configure --extra-cflags="-Os -s" --prefix=$RTFS/ --elfinterp=/lib/libc.so --config-musl --config-bcheck=no --enable-static --cc=$RTFS/bin/tcc
+make -j $(nproc)
+make install
+
+cd ..
diff --git a/tests/c.sh b/tests/c.sh
new file mode 100755
index 0000000..4fe4492
--- /dev/null
+++ b/tests/c.sh
@@ -0,0 +1,20 @@
+#!/bin/sh
+out_name=$(mktemp XXXXXX)
+
+echo "#include <stdio.h>" >> test.c
+echo "int main(void){return 0;}" >> test.c
+
+$CC test.c -o $out_name
+rm test.c
+
+if ./$out_name; then
+	echo "[OK] C compiler work..."
+	rm $out_name
+	exit 0
+
+else
+	echo "[FAILED] Fix c compiler or headers..."
+	rm $out_name
+	exit 1
+
+fi
diff --git a/tests/git.sh b/tests/git.sh
new file mode 100755
index 0000000..b6e6d54
--- /dev/null
+++ b/tests/git.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+if ! git > /dev/null; then
+	echo "[OK] Git installed..."
+	exit 0;
+
+else
+	echo "[FAILED] Git is not installed..."
+	exit 1
+
+fi
+
diff --git a/tests/make.sh b/tests/make.sh
new file mode 100755
index 0000000..058ef7b
--- /dev/null
+++ b/tests/make.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+if make -h > /dev/null; then
+	echo "[OK] Make installed..."
+	exit 0;
+
+else
+	echo "[FAILED] Make is not installed..."
+	exit 1
+
+fi
+
diff --git a/tests/texinfo.sh b/tests/texinfo.sh
new file mode 100755
index 0000000..4afdb9e
--- /dev/null
+++ b/tests/texinfo.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+if makeinfo -h > /dev/null; then
+	echo "[OK] Texinfo installed..."
+	exit 0;
+
+else
+	echo "[FAILED] Texinfo is not installed..."
+	exit 1
+
+fi
+