diff --git a/extra/yasm/build b/extra/yasm/build
new file mode 100755
index 00000000..6daf22f8
--- /dev/null
+++ b/extra/yasm/build
@@ -0,0 +1,7 @@
+#!/bin/sh -e
+
+./configure \
+    --prefix=/usr
+
+make
+make DESTDIR="$1" install
diff --git a/extra/yasm/checksums b/extra/yasm/checksums
new file mode 100644
index 00000000..ff95d85c
--- /dev/null
+++ b/extra/yasm/checksums
@@ -0,0 +1 @@
+3dce6601b495f5b3d45b59f7d2492a340ee7e84b5beca17e48f862502bd5603f  yasm-1.3.0.tar.gz
diff --git a/extra/yasm/sources b/extra/yasm/sources
new file mode 100644
index 00000000..f1b23c34
--- /dev/null
+++ b/extra/yasm/sources
@@ -0,0 +1 @@
+https://www.tortall.net/projects/yasm/releases/yasm-1.3.0.tar.gz
diff --git a/extra/yasm/version b/extra/yasm/version
new file mode 100644
index 00000000..0a2d7f2b
--- /dev/null
+++ b/extra/yasm/version
@@ -0,0 +1 @@
+1.3.0 1