Fix a compile issue (#331)

* Fix a compile issue

* Fix a compile issue

build.sh

@@ -35,7 +35,7 @@ export DORIS_HOME=${ROOT}
 
 . ${DORIS_HOME}/env.sh
 
-PARALLEL=8
+PARALLEL=$[$(nproc)/4+1]
 
 # Check args
 usage() {

thirdparty/build-thirdparty.sh

@@ -397,7 +397,6 @@ build_boost() {
     check_if_source_exist $BOOST_SOURCE
     cd $TP_SOURCE_DIR/$BOOST_SOURCE
 
-    echo "using gcc : $GCC_VERSION : $CXX ; " > tools/build/src/user-config.jam
     ./bootstrap.sh --prefix=$TP_INSTALL_DIR 
     ./b2 link=static -d0 -j$PARALLEL --without-mpi --without-graph --without-graph_parallel --without-python cxxflags="-std=c++11 -fPIC -I$TP_INCLUDE_DIR -L$TP_LIB_DIR" install
 }

thirdparty/vars.sh

@@ -22,7 +22,7 @@
 ############################################################
 
 # --job param for *make*
-PARALLEL=4
+PARALLEL=$[$(nproc)/4+1]
 
 ###################################################
 # DO NOT change variables bellow unless you known