On Sun, 2022-10-02 at 22:14 +0200, Frank Heckenbach wrote: > I have a pattern rule like "%.c %.h &: %.y" for a tool (Bison) that > may generate two output files (.c and .h), but in some cases > (depending on the option "--defines") only one of them (.c).
The change was intentional, but has been reverted--for now. See these Savannah bugs: https://savannah.gnu.org/bugs/index.php?12078 https://savannah.gnu.org/bugs/index.php?62098 https://savannah.gnu.org/bugs/index.php?63111 For GNU make 4.4 (unless more changes) this will work the way it used to work in GNU make 4.3, BUT you will get a warning saying that your recipe didn't create one of the files. The current intent is that in the next release after GNU make 4.4, the behavior will be switched back to GNU make 4.3.90. So you should probably prepare your makefiles appropriately.
