[dpdk-dev] [PATCH v2 07/37] examples/vm_power_manager: convert guest cli to pkg-config

[Ciara Power <ciara.power@intel.com>]

From: Bruce Richardson <bruce.richardson@intel.com>

Convert the makefile for the vm_power_manager/guest_cli utility to build
using pkg-config rather than the old build system.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
---
 examples/vm_power_manager/guest_cli/Makefile | 50 ++++++++++++--------
 1 file changed, 31 insertions(+), 19 deletions(-)

diff --git a/examples/vm_power_manager/guest_cli/Makefile b/examples/vm_power_manager/guest_cli/Makefile
index 67cf081936..b84deec574 100644
--- a/examples/vm_power_manager/guest_cli/Makefile
+++ b/examples/vm_power_manager/guest_cli/Makefile
@@ -1,14 +1,5 @@
 # SPDX-License-Identifier: BSD-3-Clause
-# Copyright(c) 2010-2014 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) 2010-2020 Intel Corporation
 
 # binary name
 APP = guest_vm_power_mgr
@@ -16,14 +7,35 @@ APP = guest_vm_power_mgr
 # all source are stored in SRCS-y
 SRCS-y := main.c vm_power_cli_guest.c parse.c
 
-CFLAGS += -O3 -I$(RTE_SDK)/lib/librte_power/
-CFLAGS += $(WERROR_FLAGS)
-CFLAGS += -DALLOW_EXPERIMENTAL_API
-
-# workaround for a gcc bug with noreturn attribute
-# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12603
-ifeq ($(CONFIG_RTE_TOOLCHAIN_GCC),y)
-CFLAGS_main.o += -Wno-return-type
+# Build using pkg-config variables if possible
+ifneq ($(shell pkg-config --exists libdpdk && echo 0),0)
+$(error "no installation of DPDK found")
 endif
 
-include $(RTE_SDK)/mk/rte.extapp.mk
+all: shared
+.PHONY: shared static
+shared: build/$(APP)-shared
+	ln -sf $(APP)-shared build/$(APP)
+static: build/$(APP)-static
+	ln -sf $(APP)-static build/$(APP)
+
+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
-- 
2.17.1