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}.