examples: warn about broken pkg-config
[dpdk.git] / examples / l3fwd / Makefile
1 # SPDX-License-Identifier: BSD-3-Clause
2 # Copyright(c) 2010-2016 Intel Corporation
3
4 # binary name
5 APP = l3fwd
6
7 # all source are stored in SRCS-y
8 SRCS-y := main.c l3fwd_lpm.c l3fwd_em.c l3fwd_event.c
9 SRCS-y += l3fwd_event_generic.c l3fwd_event_internal_port.c
10
11 # Build using pkg-config variables if possible
12 ifneq ($(shell pkg-config --exists libdpdk && echo 0),0)
13 $(error "no installation of DPDK found")
14 endif
15
16 all: shared
17 .PHONY: shared static
18 shared: build/$(APP)-shared
19         ln -sf $(APP)-shared build/$(APP)
20 static: build/$(APP)-static
21         ln -sf $(APP)-static build/$(APP)
22
23 PKGCONF ?= pkg-config
24
25 PC_FILE := $(shell $(PKGCONF) --path libdpdk 2>/dev/null)
26 CFLAGS += -O3 $(shell $(PKGCONF) --cflags libdpdk)
27 # Added for 'rte_eth_link_to_str()'
28 CFLAGS += -DALLOW_EXPERIMENTAL_API
29 LDFLAGS_SHARED = $(shell $(PKGCONF) --libs libdpdk)
30 LDFLAGS_STATIC = $(shell $(PKGCONF) --static --libs libdpdk)
31
32 ifeq ($(MAKECMDGOALS),static)
33 # check for broken pkg-config
34 ifeq ($(shell echo $(LDFLAGS_STATIC) | grep 'whole-archive.*l:lib.*no-whole-archive'),)
35 $(warning "pkg-config output list does not contain drivers between 'whole-archive'/'no-whole-archive' flags.")
36 $(error "Cannot generate statically-linked binaries with this version of pkg-config")
37 endif
38 endif
39
40 build/$(APP)-shared: $(SRCS-y) Makefile $(PC_FILE) | build
41         $(CC) $(CFLAGS) $(SRCS-y) -o $@ $(LDFLAGS) $(LDFLAGS_SHARED)
42
43 build/$(APP)-static: $(SRCS-y) Makefile $(PC_FILE) | build
44         $(CC) $(CFLAGS) $(SRCS-y) -o $@ $(LDFLAGS) $(LDFLAGS_STATIC)
45
46 build:
47         @mkdir -p $@
48
49 .PHONY: clean
50 clean:
51         rm -f build/$(APP) build/$(APP)-static build/$(APP)-shared
52         test -d build && rmdir -p build || true