use gcc 12

Author: byrnedj

contrib/prerequisites-centos9.sh

@@ -48,8 +48,11 @@ POWERTOOLS_REPO=crb
 sudo dnf --enablerepo="$POWERTOOLS_REPO" install -y \
   boost-static \
   snappy-devel \
+  devtoolset-12 \
   double-conversion-devel
 
+source /opt/rh/gcc-toolset-12/enable
+
 #Do not install these from OS packages - they are typically outdated.
 #gflags-devel \
 #glog \