diff --git a/unifdef/.footprint b/unifdef/.footprint
new file mode 100644
index 000000000..433d32f07
--- /dev/null
+++ b/unifdef/.footprint
@@ -0,0 +1,8 @@
+drwxr-xr-x	root/root	usr/
+drwxr-xr-x	root/root	usr/bin/
+-rwxr-xr-x	root/root	usr/bin/unifdef
+-rwxr-xr-x	root/root	usr/bin/unifdefall
+drwxr-xr-x	root/root	usr/share/
+drwxr-xr-x	root/root	usr/share/man/
+drwxr-xr-x	root/root	usr/share/man/man1/
+-rwxr-xr-x	root/root	usr/share/man/man1/unifdef.1.gz
diff --git a/unifdef/.signature b/unifdef/.signature
new file mode 100644
index 000000000..f27f03774
--- /dev/null
+++ b/unifdef/.signature
@@ -0,0 +1,5 @@
+untrusted comment: verify with /etc/ports/opt.pub
+RWSE3ohX2g5d/ft3itVffndgF7CAriNqY4DLjKaywWJcWmZeIyUeaSx3mKD5+NZesXahbj8bokhpv4bC20KGcgFLVEfYmF5/8Ac=
+SHA256 (Pkgfile) = 42e00432468c522fda798f478efc95d31da859265ada35282c1ef1457f6d0d58
+SHA256 (.footprint) = 9a5445b7cadc2a1b94b4c3f476827dce559b5b83304ac703d621fd31747e2a9b
+SHA256 (unifdef-2.12.tar.gz) = fba564a24db7b97ebe9329713ac970627b902e5e9e8b14e19e024eb6e278d10b
diff --git a/unifdef/Pkgfile b/unifdef/Pkgfile
new file mode 100644
index 000000000..14b784c5c
--- /dev/null
+++ b/unifdef/Pkgfile
@@ -0,0 +1,19 @@
+# Description: selectively processes conditional C preprocessor #if and #ifdef directives
+# URL: https://dotat.at/prog/unifdef/
+# Maintainer: Tim Biermann, tbier at posteo dot de
+
+name=unifdef
+version=2.12
+release=1
+source=(https://dotat.at/prog/unifdef/unifdef-$version.tar.gz)
+
+build() {
+  cd $name-$version
+
+  make clean
+  make
+
+  install -Dt $PKG/usr/bin unifdef
+  install -D unifdefall.sh $PKG/usr/bin/unifdefall
+  install -Dt $PKG/usr/share/man/man1 unifdef.1
+}