diff --git a/.gitignore b/.gitignore
index e057b54ea..52a77fc01 100644
--- a/.gitignore
+++ b/.gitignore
@@ -34,3 +34,4 @@ wlantest/wlantest
 wlantest/wlantest_cli
 **/parallel-vm.log
 tags
+build/
diff --git a/eap_example/Makefile b/eap_example/Makefile
index ecef3c976..7660b8ddd 100644
--- a/eap_example/Makefile
+++ b/eap_example/Makefile
@@ -7,9 +7,9 @@ CFLAGS += -I../src
 CFLAGS += -I../src/utils
 
 
-OBJS_both += ../src/utils/libutils.a
-OBJS_both += ../src/crypto/libcrypto.a
-OBJS_both += ../src/tls/libtls.a
+EAP_LIBS += ../src/utils/libutils.a
+EAP_LIBS += ../src/crypto/libcrypto.a
+EAP_LIBS += ../src/tls/libtls.a
 
 OBJS_both += ../src/eap_common/eap_peap_common.o
 OBJS_both += ../src/eap_common/eap_psk_common.o
@@ -83,8 +83,12 @@ CFLAGS += -DEAP_SERVER
 
 
 OBJS_lib=$(OBJS_both) $(OBJS_peer) $(OBJS_server)
+_OBJS_VAR := OBJS_lib
+include ../src/objs.mk
 
 OBJS_ex = eap_example.o eap_example_peer.o eap_example_server.o
+_OBJS_VAR := OBJS_ex
+include ../src/objs.mk
 
 
 ../src/utils/libutils.a:
@@ -99,8 +103,8 @@ OBJS_ex = eap_example.o eap_example_peer.o eap_example_server.o
 
 ifneq ($(CONFIG_SOLIB), yes)
 LIBEAP = libeap.a
-libeap.a: $(OBJS_lib)
-	$(AR) crT libeap.a $(OBJS_lib)
+libeap.a: $(EAP_LIBS) $(OBJS_lib)
+	$(AR) crT libeap.a $^
 	$(RANLIB) libeap.a
 
 else
@@ -108,8 +112,8 @@ CFLAGS  += -fPIC -DPIC
 LDFLAGS += -shared
 
 LIBEAP  = libeap.so
-libeap.so: $(OBJS_lib)
-	$(LDO) $(LDFLAGS) $(OBJS_lib) -o $(LIBEAP)
+libeap.so: $(EAP_LIBS) $(OBJS_lib)
+	$(LDO) $(LDFLAGS) $^ -o $(LIBEAP)
 
 endif
 
diff --git a/hostapd/Makefile b/hostapd/Makefile
index ac83730e9..f07acdf24 100644
--- a/hostapd/Makefile
+++ b/hostapd/Makefile
@@ -1272,6 +1272,9 @@ install: $(addprefix $(DESTDIR)$(BINDIR)/,$(ALL))
 
 BCHECK=../src/drivers/build.hostapd
 
+_OBJS_VAR := OBJS
+include ../src/objs.mk
+
 hostapd: $(BCHECK) $(OBJS)
 	$(Q)$(CC) $(LDFLAGS) -o hostapd $(OBJS) $(LIBS)
 	@$(E) "  LD " $@
@@ -1279,6 +1282,10 @@ hostapd: $(BCHECK) $(OBJS)
 ifdef CONFIG_WPA_TRACE
 OBJS_c += ../src/utils/trace.o
 endif
+
+_OBJS_VAR := OBJS_c
+include ../src/objs.mk
+
 hostapd_cli: $(OBJS_c)
 	$(Q)$(CC) $(LDFLAGS) -o hostapd_cli $(OBJS_c) $(LIBS_c)
 	@$(E) "  LD " $@
@@ -1335,6 +1342,13 @@ SOBJS += ../src/crypto/sha256-kdf.o
 SOBJS += ../src/crypto/sha384-kdf.o
 SOBJS += ../src/crypto/sha512-kdf.o
 
+_OBJS_VAR := NOBJS
+include ../src/objs.mk
+_OBJS_VAR := HOBJS
+include ../src/objs.mk
+_OBJS_VAR := SOBJS
+include ../src/objs.mk
+
 nt_password_hash: $(NOBJS)
 	$(Q)$(CC) $(LDFLAGS) -o nt_password_hash $(NOBJS) $(LIBS_n)
 	@$(E) "  LD " $@
@@ -1347,15 +1361,13 @@ sae_pk_gen: $(SOBJS)
 	$(Q)$(CC) $(LDFLAGS) -o sae_pk_gen $(SOBJS) $(LIBS_s)
 	@$(E) "  LD " $@
 
+.PHONY: lcov-html
 lcov-html:
-	lcov -c -d .. > lcov.info
+	lcov -c -d $(BUILDDIR) > lcov.info
 	genhtml lcov.info --output-directory lcov-html
 
 clean: common-clean
-	rm -f core *~ *.o nt_password_hash hlr_auc_gw
+	rm -f core *~ nt_password_hash hlr_auc_gw
 	rm -f sae_pk_gen
-	rm -f *.d *.gcno *.gcda *.gcov
 	rm -f lcov.info
 	rm -rf lcov-html
-
--include $(OBJS:%.o=%.d)
diff --git a/hs20/client/Makefile b/hs20/client/Makefile
index cbb1105e1..4dcfe2d3b 100644
--- a/hs20/client/Makefile
+++ b/hs20/client/Makefile
@@ -71,19 +71,11 @@ CFLAGS += -DEAP_TLS_OPENSSL
 OBJS += ../../src/crypto/tls_openssl_ocsp.o
 LIBS += -lssl -lcrypto
 
+_OBJS_VAR := OBJS
+include ../../src/objs.mk
 hs20-osu-client: $(OBJS)
 	$(Q)$(LDO) $(LDFLAGS) -o hs20-osu-client $(OBJS) $(LIBS)
 	@$(E) "  LD " $@
 
 clean: common-clean
-	rm -f core *~ *.o *.d
-	rm -f ../../src/utils/*.o
-	rm -f ../../src/utils/*.d
-	rm -f ../../src/common/*.o
-	rm -f ../../src/common/*.d
-	rm -f ../../src/crypto/*.o
-	rm -f ../../src/crypto/*.d
-	rm -f ../../src/wps/*.o
-	rm -f ../../src/wps/*.d
-
--include $(OBJS:%.o=%.d)
+	rm -f core *~
diff --git a/hs20/server/Makefile b/hs20/server/Makefile
index 24b81cd8a..0cab6d6b0 100644
--- a/hs20/server/Makefile
+++ b/hs20/server/Makefile
@@ -33,14 +33,10 @@ CFLAGS += $(shell xml2-config --cflags)
 LIBS += $(shell xml2-config --libs)
 OBJS += ../../src/utils/xml_libxml2.o
 
+_OBJS_VAR := OBJS
+include ../../src/objs.mk
 hs20_spp_server: $(OBJS)
 	$(LDO) $(LDFLAGS) -o hs20_spp_server $(OBJS) $(LIBS)
 
 clean: common-clean
-	rm -f core *~ *.o *.d
-	rm -f ../../src/utils/*.o
-	rm -f ../../src/utils/*.d
-	rm -f ../../src/crypto/*.o
-	rm -f ../../src/crypto/*.d
-
--include $(OBJS:%.o=%.d)
+	rm -f core *~
diff --git a/radius_example/Makefile b/radius_example/Makefile
index 3492ac70f..f0e4e535a 100644
--- a/radius_example/Makefile
+++ b/radius_example/Makefile
@@ -24,10 +24,11 @@ LLIBS = -lrt
 
 OBJS_ex = radius_example.o
 
+_OBJS_VAR := OBJS_ex
+include ../src/objs.mk
+
 radius_example: $(OBJS_ex) $(LIBS)
 	$(LDO) $(LDFLAGS) -o radius_example $(OBJS_ex) $(LIBS) $(LLIBS)
 
 clean: common-clean
 	rm -f core *~ *.o *.d
-
--include $(OBJS:%.o=%.d)
diff --git a/src/ap/Makefile b/src/ap/Makefile
index 805181d00..425b12340 100644
--- a/src/ap/Makefile
+++ b/src/ap/Makefile
@@ -65,7 +65,7 @@ LIB_OBJS= \
 	wps_hostapd.o \
 	x_snoop.o
 
+_OBJS_VAR := LIB_OBJS
+include ../objs.mk
 libap.a: $(LIB_OBJS)
 	$(AR) crT $@ $?
-
--include $(OBJS:%.o=%.d)
diff --git a/src/build.rules b/src/build.rules
index 486fea658..4b04eca58 100644
--- a/src/build.rules
+++ b/src/build.rules
@@ -4,8 +4,13 @@ all: _all
 # disable built-in rules
 .SUFFIXES:
 
+# setup some variables
 ROOTDIR := $(dir $(lastword $(MAKEFILE_LIST)))
-ROOTDIR := $(dir $(ROOTDIR:%/=%))
+ROOTDIR := $(dir $(ROOTDIR:%../src/=%))../
+BUILDDIR := $(ROOTDIR)build
+_PROJ := $(abspath $(dir $(firstword $(MAKEFILE_LIST))))
+ABSROOT := $(abspath $(ROOTDIR))
+_PROJ := $(_PROJ:$(ABSROOT)/%=%)
 
 ifndef CC
 CC=gcc
@@ -26,6 +31,9 @@ endif
 ifneq ($(CONFIG_FILE),)
 -include $(CONFIG_FILE)
 
+# export for sub-makefiles
+export CONFIG_CODE_COVERAGE
+
 .PHONY: verify_config
 verify_config:
 	@if [ ! -r $(CONFIG_FILE) ]; then \
@@ -44,6 +52,10 @@ endif
 .PHONY: _all
 _all: $(VERIFY) $(ALL) $(EXTRA_TARGETS)
 
+# continue setup
+COVSUFFIX := $(if $(CONFIG_CODE_COVERAGE),-cov,)
+PROJ := $(_PROJ)$(COVSUFFIX)
+
 Q=@
 E=echo
 ifeq ($(V), 1)
@@ -59,17 +71,21 @@ ifeq ($(Q),@)
 MAKEFLAGS += --no-print-directory
 endif
 
-ifdef CONFIG_CODE_COVERAGE
-%.o: %.c
+_DIRS := $(BUILDDIR)/$(PROJ)
+.PHONY: _make_dirs
+_make_dirs:
+	@mkdir -p $(_DIRS)
+
+$(BUILDDIR)/$(PROJ)/src/%.o: $(ROOTDIR)src/%.c | _make_dirs
+	$(Q)$(CC) -c -o $@ $(CFLAGS) $<
 	@$(E) "  CC " $<
-	$(Q)cd $(dir $@); $(CC) -c -o $(notdir $@) $(CFLAGS) $(notdir $<)
-else
-%.o: %.c
+$(BUILDDIR)/$(PROJ)/%.o: %.c | _make_dirs
 	$(Q)$(CC) -c -o $@ $(CFLAGS) $<
 	@$(E) "  CC " $<
-endif
+
+BUILDOBJ = $(patsubst %,$(BUILDDIR)/$(PROJ)/%,$(patsubst $(ROOTDIR)%,%,$(1)))
 
 .PHONY: common-clean
 common-clean:
 	$(Q)$(MAKE) -C $(ROOTDIR)/src clean
-	$(Q)rm -f $(ALL)
+	$(Q)rm -rf $(ALL) $(BUILDDIR)/$(PROJ)
diff --git a/src/common/Makefile b/src/common/Makefile
index eeb69f0d4..4cd48d9fd 100644
--- a/src/common/Makefile
+++ b/src/common/Makefile
@@ -19,7 +19,7 @@ LIB_OBJS= \
 	sae.o \
 	wpa_common.o
 
+_OBJS_VAR := LIB_OBJS
+include ../objs.mk
 libcommon.a: $(LIB_OBJS)
 	$(AR) crT $@ $?
-
--include $(OBJS:%.o=%.d)
diff --git a/src/crypto/Makefile b/src/crypto/Makefile
index 94eac66fa..3af5406ea 100644
--- a/src/crypto/Makefile
+++ b/src/crypto/Makefile
@@ -66,7 +66,7 @@ LIB_OBJS += random.o
 endif
 
 
+_OBJS_VAR := LIB_OBJS
+include ../objs.mk
 libcrypto.a: $(LIB_OBJS)
 	$(AR) crT $@ $?
-
--include $(OBJS:%.o=%.d)
diff --git a/src/eap_common/Makefile b/src/eap_common/Makefile
index 7d6777bab..49fbbde02 100644
--- a/src/eap_common/Makefile
+++ b/src/eap_common/Makefile
@@ -23,7 +23,7 @@ LIB_OBJS= \
 	eap_wsc_common.o \
 	ikev2_common.o
 
+_OBJS_VAR := LIB_OBJS
+include ../objs.mk
 libeap_common.a: $(LIB_OBJS)
 	$(AR) crT $@ $?
-
--include $(OBJS:%.o=%.d)
diff --git a/src/eap_peer/Makefile b/src/eap_peer/Makefile
index 282b89696..36439b788 100644
--- a/src/eap_peer/Makefile
+++ b/src/eap_peer/Makefile
@@ -15,7 +15,7 @@ LIB_OBJS= \
 	eap.o \
 	eap_methods.o
 
+_OBJS_VAR := LIB_OBJS
+include ../objs.mk
 libeap_peer.a: $(LIB_OBJS)
 	$(AR) crT $@ $?
-
--include $(OBJS:%.o=%.d)
diff --git a/src/eap_server/Makefile b/src/eap_server/Makefile
index 4ece9aa67..946ac195e 100644
--- a/src/eap_server/Makefile
+++ b/src/eap_server/Makefile
@@ -13,7 +13,7 @@ LIB_OBJS= \
 	eap_server_identity.o \
 	eap_server_methods.o
 
+_OBJS_VAR := LIB_OBJS
+include ../objs.mk
 libeap_server.a: $(LIB_OBJS)
 	$(AR) crT $@ $?
-
--include $(OBJS:%.o=%.d)
diff --git a/src/eapol_auth/Makefile b/src/eapol_auth/Makefile
index 0175a19d9..777979ce7 100644
--- a/src/eapol_auth/Makefile
+++ b/src/eapol_auth/Makefile
@@ -8,7 +8,7 @@ install:
 
 LIB_OBJS = eapol_auth_sm.o eapol_auth_dump.o
 
+_OBJS_VAR := LIB_OBJS
+include ../objs.mk
 libeapol_auth.a: $(LIB_OBJS)
 	$(AR) crT $@ $?
-
--include $(OBJS:%.o=%.d)
diff --git a/src/eapol_supp/Makefile b/src/eapol_supp/Makefile
index c98280b46..265e5f25c 100644
--- a/src/eapol_supp/Makefile
+++ b/src/eapol_supp/Makefile
@@ -10,7 +10,7 @@ CFLAGS += -DIEEE8021X_EAPOL
 
 LIB_OBJS = eapol_supp_sm.o
 
+_OBJS_VAR := LIB_OBJS
+include ../objs.mk
 libeapol_supp.a: $(LIB_OBJS)
 	$(AR) crT $@ $?
-
--include $(OBJS:%.o=%.d)
diff --git a/src/l2_packet/Makefile b/src/l2_packet/Makefile
index 20f229511..ab8c86ecc 100644
--- a/src/l2_packet/Makefile
+++ b/src/l2_packet/Makefile
@@ -8,7 +8,7 @@ install:
 
 LIB_OBJS = l2_packet_linux.o
 
+_OBJS_VAR := LIB_OBJS
+include ../objs.mk
 libl2_packet.a: $(LIB_OBJS)
 	$(AR) crT $@ $?
-
--include $(OBJS:%.o=%.d)
diff --git a/src/objs.mk b/src/objs.mk
new file mode 100644
index 000000000..df9fb17a1
--- /dev/null
+++ b/src/objs.mk
@@ -0,0 +1,3 @@
+$(_OBJS_VAR) := $(call BUILDOBJ,$($(_OBJS_VAR)))
+-include $($(_OBJS_VAR):%.o=%.d)
+_DIRS += $(dir $($(_OBJS_VAR)))
diff --git a/src/p2p/Makefile b/src/p2p/Makefile
index 174cf6f6f..c6b406661 100644
--- a/src/p2p/Makefile
+++ b/src/p2p/Makefile
@@ -21,7 +21,7 @@ LIB_OBJS= \
 	p2p_sd.o \
 	p2p_utils.o
 
+_OBJS_VAR := LIB_OBJS
+include ../objs.mk
 libp2p.a: $(LIB_OBJS)
 	$(AR) crT $@ $?
-
--include $(OBJS:%.o=%.d)
diff --git a/src/radius/Makefile b/src/radius/Makefile
index dbe9a9a9f..83096f0c7 100644
--- a/src/radius/Makefile
+++ b/src/radius/Makefile
@@ -14,7 +14,7 @@ LIB_OBJS= \
 	radius_das.o \
 	radius_server.o
 
+_OBJS_VAR := LIB_OBJS
+include ../objs.mk
 libradius.a: $(LIB_OBJS)
 	$(AR) crT $@ $?
-
--include $(OBJS:%.o=%.d)
diff --git a/src/rsn_supp/Makefile b/src/rsn_supp/Makefile
index 255cb73a7..43288e3fd 100644
--- a/src/rsn_supp/Makefile
+++ b/src/rsn_supp/Makefile
@@ -19,7 +19,7 @@ LIB_OBJS= \
 	wpa.o \
 	wpa_ie.o
 
+_OBJS_VAR := LIB_OBJS
+include ../objs.mk
 librsn_supp.a: $(LIB_OBJS)
 	$(AR) crT $@ $?
-
--include $(OBJS:%.o=%.d)
diff --git a/src/tls/Makefile b/src/tls/Makefile
index 0a36cf9e4..3fac5ee8c 100644
--- a/src/tls/Makefile
+++ b/src/tls/Makefile
@@ -31,7 +31,7 @@ LIB_OBJS= \
 	x509v3.o
 
 
+_OBJS_VAR := LIB_OBJS
+include ../objs.mk
 libtls.a: $(LIB_OBJS)
 	$(AR) crT $@ $?
-
--include $(OBJS:%.o=%.d)
diff --git a/src/utils/Makefile b/src/utils/Makefile
index 29fb1295d..7be05101f 100644
--- a/src/utils/Makefile
+++ b/src/utils/Makefile
@@ -34,7 +34,7 @@ LIB_OBJS += edit.o
 
 #LIB_OBJS += pcsc_funcs.o
 
+_OBJS_VAR := LIB_OBJS
+include ../objs.mk
 libutils.a: $(LIB_OBJS)
 	$(AR) crT $@ $?
-
--include $(OBJS:%.o=%.d)
diff --git a/src/wps/Makefile b/src/wps/Makefile
index 811b62977..ed928ef41 100644
--- a/src/wps/Makefile
+++ b/src/wps/Makefile
@@ -33,7 +33,7 @@ LIB_OBJS= \
 	wps_upnp_ssdp.o \
 	wps_upnp_web.o
 
+_OBJS_VAR := LIB_OBJS
+include ../objs.mk
 libwps.a: $(LIB_OBJS)
 	$(AR) crT $@ $?
-
--include $(OBJS:%.o=%.d)
diff --git a/tests/Makefile b/tests/Makefile
index 4d9f2e0ab..4a07a5dc5 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -5,6 +5,13 @@ ALL=test-base64 test-md4 test-milenage \
 
 include ../src/build.rules
 
+# for now, keep building in this folder, otherwise we need to
+# put each object for each test into a separate variable and
+# then do the objs.mk dance for it ...
+%.o: %.c
+	$(Q)$(CC) -c -o $@ $(CFLAGS) $<
+	@$(E) "  CC " $<
+
 ifdef LIBFUZZER
 CC=clang
 CFLAGS = -MMD -O2 -Wall -g
diff --git a/wlantest/Makefile b/wlantest/Makefile
index fee80f6f4..410c309d4 100644
--- a/wlantest/Makefile
+++ b/wlantest/Makefile
@@ -71,6 +71,12 @@ TOBJS += gcmp.o
 
 OBJS_cli = wlantest_cli.o
 
+_OBJS_VAR := OBJS
+include ../src/objs.mk
+_OBJS_VAR := TOBJS
+include ../src/objs.mk
+_OBJS_VAR := OBJS_cli
+include ../src/objs.mk
 
 wlantest: $(OBJS) $(OWN_LIBS)
 	$(LDO) $(LDFLAGS) -o wlantest $(OBJS) $(OWN_LIBS) $(LIBS)
@@ -82,6 +88,4 @@ test_vectors: $(TOBJS) $(OWN_LIBS)
 	$(LDO) $(LDFLAGS) -o test_vectors $(TOBJS) $(OWN_LIBS) $(LIBS)
 
 clean: common-clean
-	rm -f core *~ *.o *.d
-
--include $(OBJS:%.o=%.d)
+	rm -f core *~
diff --git a/wpa_supplicant/Makefile b/wpa_supplicant/Makefile
index 8645d908f..9f81addd8 100644
--- a/wpa_supplicant/Makefile
+++ b/wpa_supplicant/Makefile
@@ -1860,28 +1860,40 @@ dynamic_eap_methods: $(EAPDYN)
 
 BCHECK=../src/drivers/build.wpa_supplicant
 
+_OBJS_VAR := OBJS_priv
+include ../src/objs.mk
 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)
 	$(Q)$(LDO) $(LDFLAGS) -o wpa_supplicant $(OBJS) $(LIBS) $(EXTRALIBS)
 	@$(E) "  LD " $@
 
+_OBJS_VAR := OBJS_t
+include ../src/objs.mk
 eapol_test: $(OBJS_t)
 	$(Q)$(LDO) $(LDFLAGS) -o eapol_test $(OBJS_t) $(LIBS)
 	@$(E) "  LD " $@
 
+_OBJS_VAR := OBJS_t2
+include ../src/objs.mk
 preauth_test: $(OBJS_t2)
 	$(Q)$(LDO) $(LDFLAGS) -o preauth_test $(OBJS_t2) $(LIBS)
 	@$(E) "  LD " $@
 
+_OBJS_VAR := OBJS_p
+include ../src/objs.mk
 wpa_passphrase: $(OBJS_p)
 	$(Q)$(LDO) $(LDFLAGS) -o wpa_passphrase $(OBJS_p) $(LIBS_p) $(LIBS)
 	@$(E) "  LD " $@
 
+_OBJS_VAR := OBJS_c
+include ../src/objs.mk
 wpa_cli: $(OBJS_c)
 	$(Q)$(LDO) $(LDFLAGS) -o wpa_cli $(OBJS_c) $(LIBS_c)
 	@$(E) "  LD " $@
@@ -1895,6 +1907,8 @@ LIBCTRLSO += ../src/utils/os_$(CONFIG_OS).c
 LIBCTRLSO += ../src/utils/common.c
 LIBCTRLSO += ../src/utils/wpa_debug.c
 
+_OBJS_VAR := LIBCTRL
+include ../src/objs.mk
 libwpa_client.a: $(LIBCTRL)
 	$(Q)rm -f $@
 	$(Q)$(AR) crs $@ $?
@@ -1904,14 +1918,19 @@ libwpa_client.so: $(LIBCTRLSO)
 	@$(E) "  CC  $@ ($^)"
 	$(Q)$(CC) $(LDFLAGS) -o $@ $(CFLAGS) -shared -fPIC $^
 
-libwpa_test1: libwpa_test.o libwpa_client.a
-	$(Q)$(LDO) $(LDFLAGS) -o libwpa_test1 libwpa_test.o libwpa_client.a $(LIBS_c)
+OBJS_wpatest := libwpa_test.o
+_OBJS_VAR := OBJS_wpatest
+include ../src/objs.mk
+libwpa_test1: $(OBJS_wpatest) libwpa_client.a
+	$(Q)$(LDO) $(LDFLAGS) -o libwpa_test1 $(OBJS_wpatest) libwpa_client.a $(LIBS_c)
 	@$(E) "  LD " $@
 
-libwpa_test2: libwpa_test.o libwpa_client.so
-	$(Q)$(LDO) $(LDFLAGS) -o libwpa_test2 libwpa_test.o -L. -lwpa_client $(LIBS_c)
+libwpa_test2: $(OBJS_wpatest) libwpa_client.so
+	$(Q)$(LDO) $(LDFLAGS) -o libwpa_test2 $(OBJS_wpatest) -L. -lwpa_client $(LIBS_c)
 	@$(E) "  LD " $@
 
+_OBJS_VAR := OBJS_nfc
+include ../src/objs.mk
 nfc_pw_token: $(OBJS_nfc)
 	$(Q)$(LDO) $(LDFLAGS) -o nfc_pw_token $(OBJS_nfc) $(LIBS)
 	@$(E) "  LD " $@
@@ -1989,8 +2008,9 @@ FIPSLD=$(FIPSDIR)/bin/fipsld
 fips:
 	$(MAKE) CC=$(FIPSLD) FIPSLD_CC="$(CC)"
 
-lcov-html: wpa_supplicant.gcda
-	lcov -c -d .. > lcov.info
+.PHONY: lcov-html
+lcov-html: $(call BUILDOBJ,wpa_supplicant.gcda)
+	lcov -c -d $(BUILDDIR) > lcov.info
 	genhtml lcov.info --output-directory lcov-html
 
 clean: common-clean
@@ -2005,5 +2025,3 @@ clean: common-clean
 	rm -f libwpa_client.a
 	rm -f libwpa_client.so
 	rm -f libwpa_test1 libwpa_test2
-
--include $(OBJS:%.o=%.d)