build/pkg-config: improve static linking flags

[dpdk.git] / examples / l2fwd-cat / Makefile

diff --git a/examples/l2fwd-cat/Makefile b/examples/l2fwd-cat/Makefile
index fe0f200..d767a10 100644 (file)
--- a/examples/l2fwd-cat/Makefile
+++ b/examples/l2fwd-cat/Makefile
@@ -8,8 +8,7 @@ APP = l2fwd-cat
 SRCS-y := l2fwd-cat.c cat.c
 
 # Build using pkg-config variables if possible
-$(shell pkg-config --exists libdpdk)
-ifeq ($(.SHELLSTATUS),0)
+ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
 
 all: shared
 .PHONY: shared static
@@ -18,13 +17,13 @@ shared: build/$(APP)-shared
 static: build/$(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)
+PKGCONF ?= pkg-config
+
+PC_FILE := $(shell $(PKGCONF) --path libdpdk 2>/dev/null)
+CFLAGS += -O3 $(shell $(PKGCONF) --cflags libdpdk)
+LDFLAGS_SHARED = $(shell $(PKGCONF) --libs libdpdk)
+LDFLAGS_STATIC = $(shell $(PKGCONF) --static --libs libdpdk)
 
-CFLAGS += -DALLOW_EXPERIMENTAL_API
-CFLAGS += -D_GNU_SOURCE
 LDFLAGS += -lpqos
 
 build/$(APP)-shared: $(SRCS-y) Makefile $(PC_FILE) | build
@@ -39,7 +38,7 @@ build:
 .PHONY: clean
 clean:
        rm -f build/$(APP) build/$(APP)-static build/$(APP)-shared
-       rmdir --ignore-fail-on-non-empty build
+       test -d build && rmdir -p build || true
 
 else # Build using legacy build system
 
@@ -51,13 +50,13 @@ ifeq ($(PQOS_INSTALL_PATH),)
 $(error "Please define PQOS_INSTALL_PATH environment variable")
 endif
 
-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linuxapp-gcc
+# Default target, detect a build directory, by looking for a path with a .config
+RTE_TARGET ?= $(notdir $(abspath $(dir $(firstword $(wildcard $(RTE_SDK)/*/.config)))))
 
 include $(RTE_SDK)/mk/rte.vars.mk
 
-CFLAGS += -DALLOW_EXPERIMENTAL_API
 CFLAGS += $(WERROR_FLAGS)
+CFLAGS += -DALLOW_EXPERIMENTAL_API
 
 # workaround for a gcc bug with noreturn attribute
 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12603
@@ -68,7 +67,6 @@ endif
 EXTRA_CFLAGS += -O3 -g -Wfatal-errors
 
 CFLAGS += -I$(PQOS_INSTALL_PATH)/../include
-CFLAGS_cat.o := -D_GNU_SOURCE
 
 LDLIBS += -L$(PQOS_INSTALL_PATH)
 LDLIBS += -lpqos