Follow-up Comment #3, bug #63821 (project make):
The title is slightly misleading because MAKEFLAGS += -r DOES disable default
suffix rules, it just doesn't remove them if you add back the extensions to
the .SUFFIXES target.
See this test from tests/scripts/options/dash-r which passes:
# Make sure we can set it from within the makefile too
run_make_test(q!
COMPILE.c = echo
MAKEFLAGS += -r
!,
'xxx.o',
"#MAKE#: *** No rule to make target 'xxx.o'. Stop.", 512);
Since we don't set .SUFFIXES we get the answer we want. I do agree that your
change is needed though: we shouldn't "recover" the rules by setting .SUFFIXES
without redefining them.
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