diff --git a/Ports/m4/package.sh b/Ports/m4/package.sh
index 54ff9d4a02..33dd797e13 100755
--- a/Ports/m4/package.sh
+++ b/Ports/m4/package.sh
@@ -7,3 +7,6 @@ https://ftpmirror.gnu.org/gnu/m4/m4-${version}.tar.gz.sig m4-${version}.tar.gz.s
 https://ftpmirror.gnu.org/gnu/gnu-keyring.gpg gnu-keyring.gpg"
 auth_type="sig"
 auth_opts=("--keyring" "./gnu-keyring.gpg" "m4-${version}.tar.gz.sig")
+
+# Stack overflow detection needs siginfo and sbrk, neither of which we support
+export M4_cv_use_stackovf=no