On Mon, Jul 14, 2025 at 6:55 PM Eli Schwartz <eschwartz@xxxxxxxxxx> wrote: > > Please double-check my work, that this compiler.has_header() is > sufficient on your reproducer system to detect and disable the > non-working feature. it is indeed all that was needed, abd makes me wonder if a future version of dependency() shouldn't have a "has_header" parameter like the one used in find_libray() to allow for this validation to happen internally and fallback as needed. Posted a v4 with your code and modifications to still allow a fallback to the wrap. Carlo