The issue was introduced with commit
c108f37c2 ("BUILD: makefile:
rework 51D to split v3/v4"), and is also related to commit
b16d9b58
("BUILD: makefile: never force -latomic, set USE_LIBATOMIC instead")
where USE_ATOMIC has been replaced.
ifeq ($(USE_THREAD),)
51DEGREES_CFLAGS += -DFIFTYONEDEGREES_NO_THREADING -DFIFTYONE_DEGREES_NO_THREADING
endif
- USE_ATOMIC = implicit
+ USE_LIBATOMIC = implicit
endif # 51DEGREES_VER==4
ifeq ($(51DEGREES_VER),3) # v3 here