Building with -j$i, where $i>1 causes build failures

PKGBUILD

@@ -8,7 +8,7 @@ pkgver=1.3.0
 _seafilever=1.4.5
 
 #The release number for the arch package, as fixes are added to the PKGBUILD, the release number will increase
-pkgrel=2
+pkgrel=3
 
 # The description of the package, should be about 80 characters long (one line)
 pkgdesc="A framework for writing networked applications in C."
@@ -53,7 +53,7 @@ build () {
 	prepare
 	cd "$srcdir/seafile-$_seafilever/ccnet"
 	./configure --enable-server --prefix=/usr PYTHON=/usr/bin/python2
-	make
+	make -j1
 }
 
 package () {