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check: parallel_make_test_main
./$<
parallel_make_test.%.c:
printf "void _"$(subst .,_,$@)"(){}" > $@
parallel_make_test_main.c:
printf "#include <stdio.h>\nint main() {printf(\"ok\\\n\"); return 0;}" > $@
# Note the '+' prefix before the commad. This makes make keep the jobserver pipe open even when not invoking a sub-make.
# See: https://savannah.gnu.org/bugs/?47392
parallel_make_test_main: parallel_make_test_main.c $(patsubst %,parallel_make_test.%.o,$(shell seq 8))
+gcc -flto=auto -o $@ $^
clean:
rm -f parallel_make_test.*.? parallel_make_test_main*
.PHONY: clean
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