mk: build with _GNU_SOURCE defined by default

[dpdk.git] / examples / load_balancer / Makefile

diff --git a/examples/load_balancer/Makefile b/examples/load_balancer/Makefile
index 8476a0d..197b019 100644 (file)
--- a/examples/load_balancer/Makefile
+++ b/examples/load_balancer/Makefile
@@ -7,6 +7,38 @@ APP = load_balancer
 # all source are stored in SRCS-y
 SRCS-y := main.c config.c init.c runtime.c
 
+# Build using pkg-config variables if possible
+$(shell pkg-config --exists libdpdk)
+ifeq ($(.SHELLSTATUS),0)
+
+all: shared
+.PHONY: shared static
+shared: build/$(APP)-shared
+       ln -sf $(APP)-shared build/$(APP)
+static: build/$(APP)-static
+       ln -sf $(APP)-static build/$(APP)
+
+PC_FILE := $(shell pkg-config --path libdpdk)
+CFLAGS += -O3 $(shell pkg-config --cflags libdpdk)
+LDFLAGS_SHARED = $(shell pkg-config --libs libdpdk)
+LDFLAGS_STATIC = -Wl,-Bstatic $(shell pkg-config --static --libs libdpdk)
+
+build/$(APP)-shared: $(SRCS-y) Makefile $(PC_FILE) | build
+       $(CC) $(CFLAGS) $(SRCS-y) -o $@ $(LDFLAGS) $(LDFLAGS_SHARED)
+
+build/$(APP)-static: $(SRCS-y) Makefile $(PC_FILE) | build
+       $(CC) $(CFLAGS) $(SRCS-y) -o $@ $(LDFLAGS) $(LDFLAGS_STATIC)
+
+build:
+       @mkdir -p $@
+
+.PHONY: clean
+clean:
+       rm -f build/$(APP) build/$(APP)-static build/$(APP)-shared
+       rmdir --ignore-fail-on-non-empty build
+
+else # Build using legacy build system
+
 ifeq ($(RTE_SDK),)
 $(error "Please define RTE_SDK environment variable")
 endif
@@ -18,7 +50,6 @@ include $(RTE_SDK)/mk/rte.vars.mk
 
 CFLAGS += -O3 -g
 CFLAGS += $(WERROR_FLAGS)
-CFLAGS_config.o := -D_GNU_SOURCE
 
 # workaround for a gcc bug with noreturn attribute
 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12603
@@ -27,3 +58,4 @@ CFLAGS_main.o += -Wno-return-type
 endif
 
 include $(RTE_SDK)/mk/rte.extapp.mk
+endif