Follow-up Comment #18, bug#64806 (group make):
Very strange. Looks like the parent process is waiting for the child to
finish, and the child process cannot acquire the mutex and also waits.
Are all of the 8 sub-make's in the same situation?
FWIW, I tried to run the Makefile you sent on my system, using my own MinGW32
build of Make 4.4.1, available here:
https://sourceforge.net/projects/ezwinports/files/
and I cannot reproduce the hang, although I do see the "Cannot acquire output
lock, disabling output sync" warnings a couple of times during the run. This
is with GCC 9.2.0 on Windows XP, FTR. Perhaps also relevant: on my system cmp0
to cmp7 jobs run together (in parallel), whereas cmp8 and cmp9 run afterwards
(in parallel with each other, but sequentially after cmp0-cmp7). Is this
expected, given that I have a Core i7 machine with 4 cores and
hyperthreading?
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