From a5990289a9194a1934ebc85a845bce5609ab27da Mon Sep 17 00:00:00 2001
From: David Given <dg@cowlark.com>
Date: Sun, 30 Oct 2016 15:49:39 +0100
Subject: [PATCH] Don't allow parallel builds in the top-level makefile.

---
 .travis.yml | 2 +-
 Makefile    | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index dc09d213b..408e5d59b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,5 +12,5 @@ git:
     depth: 10
 language: c
 script:
-    - make PREFIX=/tmp/acki -j4
+    - make PREFIX=/tmp/acki
 
diff --git a/Makefile b/Makefile
index 0ca97d617..635650bc4 100644
--- a/Makefile
+++ b/Makefile
@@ -61,6 +61,8 @@ INSDIR = $(abspath $(BUILDDIR)/staging)
 PLATIND = $(INSDIR)/share/ack
 PLATDEP = $(INSDIR)/lib/ack
 
+.NOTPARALLEL:
+
 MAKECMDGOALS ?= +ack
 BUILD_FILES = $(shell find * -name '*.lua')