@@ -29,6 +29,8 @@ UMASK = 0022
ifneq ($(shell umask),$(UMASK))
.PHONY: _all $(MAKECMDGOALS)
+%.mk:
+
$(MAKECMDGOALS): _all
@:
@@ -1,3 +1,4 @@
+MAKEFLAGS += --no-builtin-rules
ifndef MAKE
MAKE := make
endif
@@ -5,6 +6,7 @@ ifndef HOSTMAKE
HOSTMAKE = $(MAKE)
endif
HOSTMAKE := $(shell which $(HOSTMAKE) || type -p $(HOSTMAKE) || echo make)
+HOSTMAKE += MAKEFLAGS="$(filter-out --no-builtin-rules,$(MAKEFLAGS))"
# If BR2_JLEVEL is 0, scale the maximum concurrency with the number of
# CPUs. An additional job is used in order to keep processors busy
When calling 'make', it takes several seconds before anything happens. This is because all the makefiles that have to be parsed and variables and rules that have to be evaluated. One of the rules to be evaluated are the implicit rules that make adds to check out the *.mk files from RCS etc. This obviously makes no sense. Therefore, disable the built-in rules. To avoid breaking package that depend on them, make sure we filter this out when calling sub-makes. Time for 'make help > /dev/null' on my machine (with hot cache): before after real 0m4.167s 0m3.375s user 0m3.596s 0m2.928s sys 0m0.256s 0m0.180s and for 'make graph-depends' on a large config: before after real 0m58.417s 0m53.625s user 0m48.284s 0m43.680s sys 0m4.076s 0m3.536s A roughly 10% improvement. Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> --- Makefile | 2 ++ package/Makefile.in | 2 ++ 2 files changed, 4 insertions(+)