scripts/build_utils.sh: use gcc-9 from ppa on bionic

for using more C++17 compliant compiler

Signed-off-by: Kefu Chai <tchaikov@gmail.com>

diff --git a/scripts/build_utils.sh b/scripts/build_utils.sh
index 62541041832370377884d4c553b0fcad8e8b059d..ce81f28d614758421c952a052ea778b099c2d0e3 100644 (file)
--- a/scripts/build_utils.sh
+++ b/scripts/build_utils.sh
@@ -598,6 +598,8 @@ use_ppa() {
                     use_ppa=true;;
                 xenial)
                     use_ppa=true;;
+                bionic)
+                    use_ppa=true;;
                 *)
                     use_ppa=false;;
             esac