mk: optimize directory dependencies

[dpdk.git] / drivers / net / mlx4 / Makefile

diff --git a/drivers/net/mlx4/Makefile b/drivers/net/mlx4/Makefile
index 23b766d..d30553e 100644 (file)
--- a/drivers/net/mlx4/Makefile
+++ b/drivers/net/mlx4/Makefile
@@ -31,29 +31,19 @@
 
 include $(RTE_SDK)/mk/rte.vars.mk
 
-ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS)$(CONFIG_RTE_BUILD_SHARED_LIB),yy)
-all:
-       @echo 'MLX4: Not supported in a combined shared library'
-       @false
-endif
-
 # Library name.
 LIB = librte_pmd_mlx4.a
 
 # Sources.
 SRCS-$(CONFIG_RTE_LIBRTE_MLX4_PMD) += mlx4.c
 
-# Dependencies.
-DEPDIRS-$(CONFIG_RTE_LIBRTE_MLX4_PMD) += lib/librte_ether
-DEPDIRS-$(CONFIG_RTE_LIBRTE_MLX4_PMD) += lib/librte_mbuf
-DEPDIRS-$(CONFIG_RTE_LIBRTE_MLX4_PMD) += lib/librte_eal
-DEPDIRS-$(CONFIG_RTE_LIBRTE_MLX4_PMD) += lib/librte_mempool
-
 # Basic CFLAGS.
 CFLAGS += -O3
 CFLAGS += -std=gnu99 -Wall -Wextra
 CFLAGS += -g
 CFLAGS += -I.
+CFLAGS += -D_BSD_SOURCE
+CFLAGS += -D_DEFAULT_SOURCE
 CFLAGS += -D_XOPEN_SOURCE=600
 CFLAGS += $(WERROR_FLAGS)
 LDLIBS += -libverbs
@@ -104,7 +94,9 @@ ifndef V
 AUTOCONF_OUTPUT := >/dev/null
 endif
 
-mlx4_autoconf.h: $(RTE_SDK)/scripts/auto-config-h.sh
+mlx4_autoconf.h.new: FORCE
+
+mlx4_autoconf.h.new: $(RTE_SDK)/buildtools/auto-config-h.sh
        $Q $(RM) -f -- '$@'
        $Q sh -- '$<' '$@' \
                RSS_SUPPORT \
@@ -124,9 +116,16 @@ mlx4_autoconf.h: $(RTE_SDK)/scripts/auto-config-h.sh
                enum IBV_EXP_QP_BURST_CREATE_DISABLE_ETH_LOOPBACK \
                $(AUTOCONF_OUTPUT)
 
+# Create mlx4_autoconf.h or update it in case it differs from the new one.
+
+mlx4_autoconf.h: mlx4_autoconf.h.new
+       $Q [ -f '$@' ] && \
+               cmp '$<' '$@' $(AUTOCONF_OUTPUT) || \
+               mv '$<' '$@'
+
 mlx4.o: mlx4_autoconf.h
 
 clean_mlx4: FORCE
-       $Q rm -f -- mlx4_autoconf.h
+       $Q rm -f -- mlx4_autoconf.h mlx4_autoconf.h.new
 
 clean: clean_mlx4