PR fortran/40569
PR fortran/40568
* intrinsic.c (add_functions): Make compiler_version and
compiler_options CLASS_INQUIRY.
* gfortran.h (gfc_get_option_string): New prototype.
* intrinsic.texi (COMPILER_VERSION, COMPILER_OPTIONS):
Add documentation.
(C_SIZEOF): Mark as inquiry function of ISO_C_BINDING.
(ISO_FORTRAN_ENV): Refer to COMPILER_VERSION and COMPILER_OPTIONS.
(ISO_C_BINDING): Refer to C_SIZEOF.
* options.c (gfc_get_option_string): New function.
* simplify.c (gfc_simplify_compiler_options): Use it.
(gfc_simplify_compiler_version): Include compiler name.