As per documentation, even 4.7 ought to suffice. At least 4.13 objects to there being nothing ahead of the first comma in @xref{}. --- The text inserted it merely a guess; I'm open to better suggestions.
Noticed with gcc15, so may want backporting. --- a/gcc/doc/extend.texi +++ b/gcc/doc/extend.texi @@ -10667,7 +10667,7 @@ and @samp{[[omp::sequence(...)]]} in C a GCC needs to be invoked with the @option{-fopenmp} option. This option also arranges for automatic linking of the OpenMP runtime library. -@xref{,,,libgomp,GNU Offloading and Multi Processing Runtime Library}. +@xref{Enabling OpenMP,,,libgomp,GNU Offloading and Multi Processing Runtime Library}. @xref{OpenMP and OpenACC Options}, for additional options useful with @option{-fopenmp}. @@ -10689,7 +10689,7 @@ To enable the processing of OpenACC dire in C and C++, GCC needs to be invoked with the @option{-fopenacc} option. This option also arranges for automatic linking of the OpenACC runtime library. -@xref{,,,libgomp,GNU Offloading and Multi Processing Runtime Library}. +@xref{Enabling OpenMP,,,libgomp,GNU Offloading and Multi Processing Runtime Library}. @xref{OpenMP and OpenACC Options}, for additional options useful with @option{-fopenacc}.