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build: Rebuild libs all the time

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When files change that go into a static library such as libutils.a, then
libutils.a doesn't get rebuilt from, e.g., wlantest because the
top-level Makefile just calls the library make if the library doesn't
exist yet.

Change that by making the library depend on a phony target (cannot make
it itself phony due to the pattern) so that the build will always
recurse into the library build, and check there if the library needs to
be rebuilt.

While at it, remove the (actually unnecessary) mkdir so it doesn't get
done each and every time you do 'make'.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2020-10-12 11:30:53 +02:00 committed by Jouni Malinen
parent 6c41d43f1a
commit ac1447ae9d
1 changed files with 6 additions and 2 deletions
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8
src/build.rules
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@ -94,8 +94,12 @@ $(BUILDDIR)/$(PROJ)/wpa_supplicant/%.o: $(ROOTDIR)wpa_supplicant/%.c $(CONFIG_FI
@$(E) " CC " $<
# libraries - they know how to build themselves
$(BUILDDIR)/$(PROJ)/%.a: $(CONFIG_FILE)
$(Q)mkdir -p $(BUILDDIR)/$(PROJ)/$(dir $(@:$(BUILDDIR)/$(PROJ)/%=%))
# (lib_phony so we recurse all the time)
.PHONY: lib_phony
lib_phony:
# nothing
$(BUILDDIR)/$(PROJ)/%.a: $(CONFIG_FILE) lib_phony
$(Q)$(MAKE) -C $(ROOTDIR)$(dir $(@:$(BUILDDIR)/$(PROJ)/%=%)) OUT=$(abspath $(dir $@))/
BUILDOBJ = $(patsubst %,$(BUILDDIR)/$(PROJ)/%,$(patsubst $(ROOTDIR)%,%,$(1)))