diff --git a/app/headless/headless_egl.go b/app/headless/headless_egl.go
index 03b36d10..8ccb70a6 100644
--- a/app/headless/headless_egl.go
+++ b/app/headless/headless_egl.go
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: Unlicense OR MIT
 
-// +build linux freebsd windows
+// +build linux freebsd windows openbsd
 
 package headless
 
diff --git a/app/internal/egl/egl.go b/app/internal/egl/egl.go
index ed22fab1..9689448f 100644
--- a/app/internal/egl/egl.go
+++ b/app/internal/egl/egl.go
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: Unlicense OR MIT
 
-// +build linux windows freebsd
+// +build linux windows freebsd openbsd
 
 package egl
 
diff --git a/app/internal/egl/egl_unix.go b/app/internal/egl/egl_unix.go
index 9f07a6a5..1eba3d49 100644
--- a/app/internal/egl/egl_unix.go
+++ b/app/internal/egl/egl_unix.go
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: Unlicense OR MIT
 
-// +build linux freebsd
+// +build linux freebsd openbsd
 
 package egl
 
@@ -8,6 +8,8 @@ package egl
 #cgo LDFLAGS: -lEGL
 #cgo freebsd CFLAGS: -I/usr/local/include
 #cgo freebsd LDFLAGS: -L/usr/local/lib
+#cgo openbsd CFLAGS: -I/usr/X11R6/include
+#cgo openbsd LDFLAGS: -L/usr/X11R6/lib
 
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
diff --git a/app/internal/gl/functions.go b/app/internal/gl/functions.go
index dfd1417c..d7594286 100644
--- a/app/internal/gl/functions.go
+++ b/app/internal/gl/functions.go
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: Unlicense OR MIT
 
-// +build darwin linux freebsd
+// +build darwin linux freebsd openbsd
 
 package gl
 
@@ -12,9 +12,12 @@ import (
 
 /*
 #cgo CFLAGS: -Werror
-#cgo linux freebsd LDFLAGS: -lGLESv2 -ldl
+#cgo linux freebsd openbsd LDFLAGS: -lGLESv2
+#cgo linux freebsd LDFLAGS: -ldl
 #cgo freebsd CFLAGS: -I/usr/local/include
 #cgo freebsd LDFLAGS: -L/usr/local/lib
+#cgo openbsd CFLAGS: -I/usr/X11R6/include
+#cgo openbsd LDFLAGS: -L/usr/X11R6/lib
 #cgo darwin,!ios CFLAGS: -DGL_SILENCE_DEPRECATION
 #cgo darwin,!ios LDFLAGS: -framework OpenGL
 #cgo darwin,ios CFLAGS: -DGLES_SILENCE_DEPRECATION
diff --git a/app/internal/window/egl_x11.go b/app/internal/window/egl_x11.go
index c022fa96..ffe69c67 100644
--- a/app/internal/window/egl_x11.go
+++ b/app/internal/window/egl_x11.go
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: Unlicense OR MIT
 
-// +build linux,!android,!nox11 freebsd
+// +build linux,!android,!nox11 freebsd openbsd
 
 package window
 
diff --git a/app/internal/window/os_unix.go b/app/internal/window/os_unix.go
index f6ebfe8f..d32a03fb 100644
--- a/app/internal/window/os_unix.go
+++ b/app/internal/window/os_unix.go
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: Unlicense OR MIT
 
-// +build linux,!android freebsd
+// +build linux,!android freebsd openbsd
 
 package window
 
diff --git a/app/internal/window/os_x11.go b/app/internal/window/os_x11.go
index b70b100a..5d8406ac 100644
--- a/app/internal/window/os_x11.go
+++ b/app/internal/window/os_x11.go
@@ -1,10 +1,12 @@
 // SPDX-License-Identifier: Unlicense OR MIT
 
-// +build linux,!android,!nox11 freebsd
+// +build linux,!android,!nox11 freebsd openbsd
 
 package window
 
 /*
+#cgo openbsd CFLAGS: -I/usr/X11R6/include -I/usr/local/include
+#cgo openbsd LDFLAGS: -L/usr/X11R6/lib -L/usr/local/lib
 #cgo LDFLAGS: -lX11 -lxkbcommon -lxkbcommon-x11 -lX11-xcb
 #include <stdlib.h>
 #include <locale.h>
diff --git a/app/internal/xkb/xkb_unix.go b/app/internal/xkb/xkb_unix.go
index 23bd87c6..026b2e69 100644
--- a/app/internal/xkb/xkb_unix.go
+++ b/app/internal/xkb/xkb_unix.go
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: Unlicense OR MIT
 
-// +build linux,!android freebsd
+// +build linux,!android freebsd openbsd
 
 // Package xkb implements a Go interface for the X Keyboard Extension library.
 package xkb
@@ -20,8 +20,8 @@ import (
 
 /*
 #cgo LDFLAGS: -lxkbcommon
-#cgo freebsd CFLAGS: -I/usr/local/include
-#cgo freebsd LDFLAGS: -L/usr/local/lib
+#cgo freebsd openbsd CFLAGS: -I/usr/local/include
+#cgo freebsd openbsd LDFLAGS: -L/usr/local/lib
 
 #include <stdlib.h>
 #include <xkbcommon/xkbcommon.h>