examples: warn about broken pkg-config

[dpdk.git] / examples / l3fwd / Makefile

diff --git a/examples/l3fwd/Makefile b/examples/l3fwd/Makefile
index 6cd6561..ff3930c 100644 (file)
--- a/examples/l3fwd/Makefile
+++ b/examples/l3fwd/Makefile
@@ -1,23 +1,52 @@
 # SPDX-License-Identifier: BSD-3-Clause
 # Copyright(c) 2010-2016 Intel Corporation
 
-ifeq ($(RTE_SDK),)
-$(error "Please define RTE_SDK environment variable")
+# binary name
+APP = l3fwd
+
+# all source are stored in SRCS-y
+SRCS-y := main.c l3fwd_lpm.c l3fwd_em.c l3fwd_event.c
+SRCS-y += l3fwd_event_generic.c l3fwd_event_internal_port.c
+
+# Build using pkg-config variables if possible
+ifneq ($(shell pkg-config --exists libdpdk && echo 0),0)
+$(error "no installation of DPDK found")
 endif
 
-# Default target, can be overridden by command line or environment
-RTE_TARGET ?= x86_64-native-linuxapp-gcc
+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)
 
-include $(RTE_SDK)/mk/rte.vars.mk
+PKGCONF ?= pkg-config
 
-# binary name
-APP = l3fwd
+PC_FILE := $(shell $(PKGCONF) --path libdpdk 2>/dev/null)
+CFLAGS += -O3 $(shell $(PKGCONF) --cflags libdpdk)
+# Added for 'rte_eth_link_to_str()'
+CFLAGS += -DALLOW_EXPERIMENTAL_API
+LDFLAGS_SHARED = $(shell $(PKGCONF) --libs libdpdk)
+LDFLAGS_STATIC = $(shell $(PKGCONF) --static --libs libdpdk)
 
-# all source are stored in SRCS-y
-SRCS-y := main.c l3fwd_lpm.c l3fwd_em.c
+ifeq ($(MAKECMDGOALS),static)
+# check for broken pkg-config
+ifeq ($(shell echo $(LDFLAGS_STATIC) | grep 'whole-archive.*l:lib.*no-whole-archive'),)
+$(warning "pkg-config output list does not contain drivers between 'whole-archive'/'no-whole-archive' flags.")
+$(error "Cannot generate statically-linked binaries with this version of pkg-config")
+endif
+endif
+
+build/$(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)
 
-CFLAGS += -I$(SRCDIR)
-CFLAGS += -O3 $(USER_FLAGS)
-CFLAGS += $(WERROR_FLAGS)
+build:
+       @mkdir -p $@
 
-include $(RTE_SDK)/mk/rte.extapp.mk
+.PHONY: clean
+clean:
+       rm -f build/$(APP) build/$(APP)-static build/$(APP)-shared
+       test -d build && rmdir -p build || true