GCC Compilers info for the OpenMP Compilers page

[Jakub Jelinek]

On Wed, Nov 08, 2017 at 04:28:18AM -0800, Yun He wrote:
> Jakub, Ed, and/or GCC support,
> 
> Appreciate if we could get an update for GCC.  SC17 is just around the
> corner.
> 
> Below is what we have for now.
> 
> Open Source GCC Free and open source – Linux, Solaris, AIX, MacOSX,
> Windows, FreeBSD, NetBSD, OpenBSD, DragonFly BSD, HPUX, RTEMS
> >From GCC 4.2.0, OpenMP 2.5 is fully supported.
> >From GCC 4.4.0, OpenMP 3.0 is fully supported.
> >From GCC 4.7.0, OpenMP 3.1 is fully supported.
> In GCC 4.9.0, OpenMP 4.0 is supported for C and C++, but not Fortran.
> >From GCC 4.9.1, OpenMP 4.0 is fully supported.
> >From GCC 6.1, OpenMP 4.5 is fully supported for C and C++.
> Compile with -fopenmp to enable OpenMP.
> Online documentation:  https://gcc.gnu.org/onlinedocs/libgomp/
> OpenMP support history: https://gcc.gnu.org/projects/gomp/

Nothing really changed since the last year, OpenMP 5.0 is not out yet,
and OpenMP 4.5 Fortran is only partially supported even in the latest
GCC versions, not fully supported.

	Jakub