From 3c14e712caf5fe265e78fa1d54bd10b95dca98da Mon Sep 17 00:00:00 2001
From: Marc Weber <marco-oweber@gmx.de>
Date: Tue, 15 Jun 2010 19:00:51 +0000
Subject: [PATCH] setup.sh: add -j and -l options

svn path=/nixpkgs/branches/stdenv-updates/; revision=22283
---
 pkgs/stdenv/generic/setup.sh | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/pkgs/stdenv/generic/setup.sh b/pkgs/stdenv/generic/setup.sh
index a9f4d4dc357..644218fdbf3 100644
--- a/pkgs/stdenv/generic/setup.sh
+++ b/pkgs/stdenv/generic/setup.sh
@@ -79,9 +79,19 @@ cmd(){
 }
 
 runMake(){
-  cmd make ${makefile:+-f $makefile} "$@"
+  local optout=NO_PARALLEL_BUILD_${curPhase}
+  [ -n "${!optout}" ] || \
+    local j="$makeFlagsParallelBuild"
+  cmd make ${makefile:+-f $makefile} "$@" $j
 }
 
+######################################################################
+# parallel builds: opt-out
+# - in a phase:     set NO_PARALLEL_BUILD_${PHASE_NAME}
+# - for this build: pass NUM_CORES=1 to the builder
+if [ "$NUM_CORES" != 1 ]; then
+  makeFlagsParallelBuild="-j $NIX_MAX_PARALLELIZATION -l $NIX_TARGET_LOAD"
+fi
 
 ######################################################################
 # Initialisation.