diff --git a/extra/llvm/core/tags.txt b/extra/llvm/core/tags.txt
new file mode 100644
index 0000000000..6bf68304bb
--- /dev/null
+++ b/extra/llvm/core/tags.txt
@@ -0,0 +1 @@
+unportable
diff --git a/extra/llvm/engine/tags.txt b/extra/llvm/engine/tags.txt
new file mode 100644
index 0000000000..6bf68304bb
--- /dev/null
+++ b/extra/llvm/engine/tags.txt
@@ -0,0 +1 @@
+unportable
diff --git a/extra/llvm/invoker/tags.txt b/extra/llvm/invoker/tags.txt
new file mode 100644
index 0000000000..6bf68304bb
--- /dev/null
+++ b/extra/llvm/invoker/tags.txt
@@ -0,0 +1 @@
+unportable
diff --git a/extra/llvm/jit/tags.txt b/extra/llvm/jit/tags.txt
new file mode 100644
index 0000000000..6bf68304bb
--- /dev/null
+++ b/extra/llvm/jit/tags.txt
@@ -0,0 +1 @@
+unportable
diff --git a/extra/llvm/reader/tags.txt b/extra/llvm/reader/tags.txt
new file mode 100644
index 0000000000..6bf68304bb
--- /dev/null
+++ b/extra/llvm/reader/tags.txt
@@ -0,0 +1 @@
+unportable
diff --git a/extra/llvm/tags.txt b/extra/llvm/tags.txt
index bb863cf9a0..bf2a35f15b 100644
--- a/extra/llvm/tags.txt
+++ b/extra/llvm/tags.txt
@@ -1 +1,2 @@
 bindings
+unportable
diff --git a/extra/llvm/types/tags.txt b/extra/llvm/types/tags.txt
new file mode 100644
index 0000000000..6bf68304bb
--- /dev/null
+++ b/extra/llvm/types/tags.txt
@@ -0,0 +1 @@
+unportable
diff --git a/extra/llvm/wrappers/tags.txt b/extra/llvm/wrappers/tags.txt
new file mode 100644
index 0000000000..6bf68304bb
--- /dev/null
+++ b/extra/llvm/wrappers/tags.txt
@@ -0,0 +1 @@
+unportable