From 1621943c45e8ca373589e52228483c2b9cb0adac Mon Sep 17 00:00:00 2001
From: luo rixin <luorixin@huawei.com>
Date: Wed, 23 Dec 2020 16:37:12 +0800
Subject: [PATCH] do_cmake: add a default value to BOOST_J

Signed-off-by: luo rixin <luorixin@huawei.com>
---
 do_cmake.sh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/do_cmake.sh b/do_cmake.sh
index d70aff8601079..345986d630c7c 100755
--- a/do_cmake.sh
+++ b/do_cmake.sh
@@ -53,6 +53,11 @@ if type ccache > /dev/null 2>&1 ; then
     ARGS+=" -DWITH_CCACHE=ON"
 fi
 
+if [[ ! "$ARGS $@" =~ "-DBOOST_J" ]] ; then
+    ncpu=$(getconf _NPROCESSORS_ONLN 2>&1)
+    [ -n "$ncpu" -a "$ncpu" -gt 1 ] && ARGS+=" -DBOOST_J=$(expr $ncpu / 2)"
+fi
+
 mkdir $BUILD_DIR
 cd $BUILD_DIR
 if type cmake3 > /dev/null 2>&1 ; then
-- 
2.39.5