diff --git a/extra/graphviz/attributes/platforms.txt b/extra/graphviz/attributes/platforms.txt
new file mode 100644
index 0000000000..47e0a6946a
--- /dev/null
+++ b/extra/graphviz/attributes/platforms.txt
@@ -0,0 +1 @@
+unix
\ No newline at end of file
diff --git a/extra/graphviz/builder/platforms.txt b/extra/graphviz/builder/platforms.txt
new file mode 100644
index 0000000000..47e0a6946a
--- /dev/null
+++ b/extra/graphviz/builder/platforms.txt
@@ -0,0 +1 @@
+unix
\ No newline at end of file
diff --git a/extra/graphviz/ffi/platforms.txt b/extra/graphviz/ffi/platforms.txt
new file mode 100644
index 0000000000..47e0a6946a
--- /dev/null
+++ b/extra/graphviz/ffi/platforms.txt
@@ -0,0 +1 @@
+unix
\ No newline at end of file
diff --git a/extra/graphviz/notation/platforms.txt b/extra/graphviz/notation/platforms.txt
new file mode 100644
index 0000000000..47e0a6946a
--- /dev/null
+++ b/extra/graphviz/notation/platforms.txt
@@ -0,0 +1 @@
+unix
\ No newline at end of file
diff --git a/extra/graphviz/render/platforms.txt b/extra/graphviz/render/platforms.txt
new file mode 100644
index 0000000000..47e0a6946a
--- /dev/null
+++ b/extra/graphviz/render/platforms.txt
@@ -0,0 +1 @@
+unix
\ No newline at end of file