C++11 compiler used to build openJDK but failed

Steps:

• hg clone http://hg.openjdk.java.net/jdk8/jdk8 YourOpenJDK
• cd YourOpenJDK
• bash ./get_source.sh
• bash ./configure
• make all

Errors:

~/OpenJDK/hotspot/src/share/vm/memory/generation.hpp:421:17: error: invalid suffix on literal; C++11 requires a space between literal and string macro [-Werror=literal-suffix]

my experimental machine is Ubuntu 18.04, 64bit. g++ version:

g++ (Ubuntu 7.3.0-27ubuntu1~18.04) 7.3.0

my take is that I need to use a different c++ version to walk around this. Anyone can suggest?

P.S I've posted a related but different thread in my effort to build jdk from source: Failed to build open jdk 8 from source, ubuntu 18.04, 64bit