rtbuf/rtbuf

diff --git a/msys.sh b/msys.sh
new file mode 100644
index 0000000..aeebd46
--- /dev/null
+++ b/msys.sh
@@ -0,0 +1,5 @@
+export CC=cc
+export CFLAGS=-I/mingw64/include
+export LDFLAGS=-L/mingw64/lib
+export PATH="$PATH:/mingw64/bin"
+export PKG_CONFIG_PATH=/mingw64/lib/pkgconfig