From bab4db4b005efd478b03143615b7a183cbf8d797 Mon Sep 17 00:00:00 2001
From: Bartosz Kostrzewa <bartosz_kostrzewa@fastmail.com>
Date: Thu, 2 Feb 2023 18:16:23 +0100
Subject: [PATCH] add an explicit default of 1 for recursive_jN because the
 current behaviour results in far too many compiler instances being launched
 if nothing is specified at configuration time

---
 CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index eef648f0..ed88724a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -31,7 +31,7 @@ option(mpi_comms "Use plain MPI comms instead of QMP in the kernels" ON)
 # Codegen stuff
 set(host_cxx ${CMAKE_CXX_COMPILER} CACHE STRING "select target CXX Compiler for building libqphix-codegen.a" )
 set(host_cxxflags ${CMAKE_CXX_FLAGS} CACHE STRING  "select target CXXFLAGS for building libqphix-codege.a")
-set(recursive_jN '' CACHE STRING "select -j value for recursive make (defaults to 1)")
+set(recursive_jN 1 CACHE STRING "select -j value for recursive make (defaults to 1)")
 option(skip_build "Developer only: Reduce building of certain kernels for faster build" OFF)
 
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