Hi Jonathan, > On 30/01/18 15:51 +0100, Rainer Orth wrote: >>Hi Joseph, >> >>> On Tue, 30 Jan 2018, Rainer Orth wrote: >>> >>>> So it seems the following snippet >>>> >>>> #define STARTFILE_ARCH_SPEC \ >>>> [...] >>>> %{std=c9*|std=iso9899\\:199409|std=c1*:values-Xc.o%s; :values-Xa.o%s} \ >>>> >>>> seems like the right thing to do, as you said. >>> >>> That version would need updating when we add -std=c2x (once there's a C2x >>> working draft with features being added to it). If you use std=c* instead >>> of separate std=c9* and std=c1* you'd avoid needing such a change - but >>> then of course it would cover -std=c++* for C++. >> >>I know, that why I used the current form. Admittedly it's a maintenance >>problem (likely to be forgotten in the future). If we add in -ansi, we >>can just as well add -std=c++* (thus -std=c*), too. >> >>I guess that's the safest option overall, unless Jonathan has objections >>from a C++ standards perspective. > > No objections from me, I'm happy either way. thanks. So I've opted to include -ansi for C++ backwards compatibility and thus -std=c* for ease of maintenance. Here's what I've commited after another round of testing. Rainer -- ----------------------------------------------------------------------------- Rainer Orth, Center for Biotechnology, Bielefeld University 2018-01-29 Rainer Orth PR target/40411 * config/sol2.h (STARTFILE_ARCH_SPEC): Use -std=c*, -std=iso9899:199409 instead of -pedantic to select values-Xc.o.