How to enable c11 on later versions of gcc?

Question

I currently use gcc 4.6.3. My understanding is that gcc by default uses the gnu89 standard and I would like to enable C11, the latest

Answer 1

Inside a .spec file :

%define gcc_ver %(if [[ $(gcc -dumpversion) > 4.7 ]]; then echo 1; else echo 0; fi)
# Do we use c11 ?
%if 0%{?gcc_ver} < 1
  %global std_c11 0
%else
  %global std_c11 1
%endif

# if the configure of the package supports it add :
%if %{std_c11}
  --enable-cxx11 \
%endif