examples/ka-agent: convert to pkg-config-based build

Remove references to the old make build system and use pkg-config for
building these examples.

Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>

diff --git a/examples/l2fwd-keepalive/ka-agent/Makefile b/examples/l2fwd-keepalive/ka-agent/Makefile
index 8d5061b..700137c 100644 (file)
--- a/examples/l2fwd-keepalive/ka-agent/Makefile
+++ b/examples/l2fwd-keepalive/ka-agent/Makefile
@@ -1,14 +1,5 @@
 # SPDX-License-Identifier: BSD-3-Clause
-# Copyright(c) 2016 Intel Corporation
-
-ifeq ($(RTE_SDK),)
-$(error "Please define RTE_SDK environment variable")
-endif
-
-# 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
+# Copyright(c) 2016-2020 Intel Corporation
 
 # binary name
 APP = ka-agent
@@ -16,7 +7,39 @@ APP = ka-agent
 # all source are stored in SRCS-y
 SRCS-y := main.c
 
-CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR)/../
-CFLAGS += -DALLOW_EXPERIMENTAL_API
-LDFLAGS += -lrt
-include $(RTE_SDK)/mk/rte.extapp.mk
+CFLAGS += -I..
+
+# Build using pkg-config variables if possible
+ifneq ($(shell pkg-config --exists libdpdk && echo 0),0)
+$(error "no installation of DPDK found")
+endif
+
+all: shared
+.PHONY: shared static
+shared: build/$(APP)-shared
+       ln -sf $(APP)-shared build/$(APP)
+static: build/$(APP)-static
+       ln -sf $(APP)-static build/$(APP)
+
+LDFLAGS += -lpthread -lrt
+
+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 $(PKGCONF) --static --libs libdpdk)
+
+build/$(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
+       test -d build && rmdir -p build || true