[Bug preprocessor/109183] [regression?] since GCC 11.1, -MM -MMD generates "a-" prefixed dependency files

[allan.w.macdonald at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109183

--- Comment #13 from Allan W. Macdonald <allan.w.macdonald at gmail dot com> ---
Ahhh, so, "to get back the old behaviour" (as @ Richard Biener put it), this
seems to work (at least with my project):

%.d: %.c
        gcc -MM -MD -dumpbase '' $<

Not obvious in the gcc 11.3.0 manual.