use parallel build for script

Author: tmontgomery

cppbuild/cppbuild

@@ -3,11 +3,23 @@
 SOURCE_DIR="`pwd`"
 BUILD_DIR="`pwd`/cppbuild/Release"
 
+ncpus=1
+case "`uname`" in
+ Darwin* )
+ ncpus=`sysctl -n hw.ncpu`
+ ;;
+ Linux*)
+ ncpus=$(lscpu -p | egrep -v '^#' | wc -l)
+ ;;
+esac
+
+echo "Will make with \"-j $ncpus\"."
+
 if [ -d "$BUILD_DIR" ] ; then
  echo "Build directory ($BUILD_DIR) exists, removing."
  rm -rf $BUILD_DIR
 fi
 
 mkdir -p $BUILD_DIR
 
-(cd $BUILD_DIR && cmake -G "Unix Makefiles" $SOURCE_DIR && make clean && make all && ctest -C Release)
+(cd $BUILD_DIR && cmake -G "Unix Makefiles" $SOURCE_DIR && make clean && make -j "$ncpus" all && ctest -C Release)