[Bug c++/95700] read-md.c: "missing sentinel in function call" when building gcc with musl

[vvinayag at arm dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95700

--- Comment #19 from vvinayag at arm dot com ---
Created attachment 48921
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48921&action=edit
Add -std=c++11 to the aarch64 native build fix

This patch adds CXX="$CXX -std=c++11" to the patch provided for the aarch64
native build fix.