[PATCH v6 08/15] build: add .config file to dependencies

[Johannes Berg]

From: Johannes Berg <johannes.berg at intel.com>

If the .config file changes, basically everything needs to be
rebuilt since we don't try to detect which symbols changed or
such. Now that the .config file handling is in the common
build system, make everything depend on it if there's one.

Signed-off-by: Johannes Berg <johannes.berg at intel.com>
---
 src/build.rules         | 4 ++--
 wpa_supplicant/Makefile | 2 --
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/build.rules b/src/build.rules
index 4b04eca58cf6..bdcae65519cf 100644
--- a/src/build.rules
+++ b/src/build.rules
@@ -76,10 +76,10 @@ _DIRS := $(BUILDDIR)/$(PROJ)
 _make_dirs:
 	@mkdir -p $(_DIRS)
 
-$(BUILDDIR)/$(PROJ)/src/%.o: $(ROOTDIR)src/%.c | _make_dirs
+$(BUILDDIR)/$(PROJ)/src/%.o: $(ROOTDIR)src/%.c $(CONFIG_FILE) | _make_dirs
 	$(Q)$(CC) -c -o $@ $(CFLAGS) $<
 	@$(E) "  CC " $<
-$(BUILDDIR)/$(PROJ)/%.o: %.c | _make_dirs
+$(BUILDDIR)/$(PROJ)/%.o: %.c $(CONFIG_FILE) | _make_dirs
 	$(Q)$(CC) -c -o $@ $(CFLAGS) $<
 	@$(E) "  CC " $<
 
diff --git a/wpa_supplicant/Makefile b/wpa_supplicant/Makefile
index 9f81addd8228..c858f43b5909 100644
--- a/wpa_supplicant/Makefile
+++ b/wpa_supplicant/Makefile
@@ -1866,8 +1866,6 @@ wpa_priv: $(BCHECK) $(OBJS_priv)
 	$(Q)$(LDO) $(LDFLAGS) -o wpa_priv $(OBJS_priv) $(LIBS)
 	@$(E) "  LD " $@
 
-$(OBJS_c) $(OBJS_t) $(OBJS_t2) $(OBJS) $(BCHECK) $(EXTRA_progs): .config
-
 _OBJS_VAR := OBJS
 include ../src/objs.mk
 wpa_supplicant: $(BCHECK) $(OBJS) $(EXTRA_progs)
-- 
2.26.2