From 1160db262121fbb75be7670e8ea84b631639f69f Mon Sep 17 00:00:00 2001
From: Gianfranco Costamagna <locutusofborg@debian.org>
Date: Tue, 11 Sep 2018 21:11:34 +0200
Subject: [PATCH] Limit parallel builds on Ubuntu

Limit to 2 on amd64, arm64 and ppc64el (they go OOM).
---
 debian/rules | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/debian/rules b/debian/rules
index 32b4fd97..c0391a1e 100755
--- a/debian/rules
+++ b/debian/rules
@@ -16,6 +16,18 @@ ifneq (,$(filter $(DEB_BUILD_ARCH),mips mipsel))
 	CXXFLAGS+=--param ggc-min-expand=20
 endif
 
+ifeq ($(shell dpkg-vendor --derives-from Ubuntu && echo yes),yes)
+        ifeq ($(DEB_HOST_ARCH),amd64)
+                export DEB_BUILD_MAINT_OPTIONS=parallel=2
+        endif
+        ifeq ($(DEB_HOST_ARCH),arm64)
+                export DEB_BUILD_MAINT_OPTIONS=parallel=2
+        endif
+        ifeq ($(DEB_HOST_ARCH),ppc64el)
+                export DEB_BUILD_MAINT_OPTIONS=parallel=2
+        endif
+endif
+
 BUILD_DOC = $(if $(shell dh_listpackages | grep libpcl-doc),-DWITH_DOCS=ON)
 
 # Multiarch.
-- 
2.30.2