diff --git a/tools/build.sh b/tools/build.sh
index 6c5d3b3..2ba301d 100644
--- a/tools/build.sh
+++ b/tools/build.sh
@@ -1,6 +1,7 @@
 #!/bin/bash
 set -e
 set -v
+mkdir -p bin
 SRC=bin/stencils.c
 DEST=src/copapy/obj
 python tools/generate_stencils.py $SRC
diff --git a/tools/crosscompile.sh b/tools/crosscompile.sh
index c65707b..21a02e0 100644
--- a/tools/crosscompile.sh
+++ b/tools/crosscompile.sh
@@ -13,6 +13,7 @@
 set -e
 set -v
 
+mkdir -p bin
 SRC=bin/stencils.c
 DEST=src/copapy/obj
 OPT=O3
diff --git a/tools/nativecompile.sh b/tools/nativecompile.sh
index 85d5edf..a3da168 100644
--- a/tools/nativecompile.sh
+++ b/tools/nativecompile.sh
@@ -2,6 +2,7 @@
 set -e
 set -v
 
+mkdir -p bin
 SRC=bin/stencils.c
 DEST=src/copapy/obj