# Most of this file is copied from tools/lib/traceevent/Makefile

BPF_VERSION = 0
BPF_PATCHLEVEL = 0
BPF_EXTRAVERSION = 1

MAKEFLAGS += --no-print-directory

ifeq ($(srctree),)
srctree := $(patsubst %/,%,$(dir $(CURDIR)))
srctree := $(patsubst %/,%,$(dir $(srctree)))
srctree := $(patsubst %/,%,$(dir $(srctree)))
#$(info Determined 'srctree' to be $(srctree))
endif

# Makefiles suck: This macro sets a default value of $(2) for the
# variable named by $(1), unless the variable has been set by
# environment or command line. This is necessary for CC and AR
# because make sets default values, so the simpler ?= approach
# won't work as expected.
define allow-override
  $(if $(or $(findstring environment,$(origin $(1))),\
            $(findstring command line,$(origin $(1)))),,\
    $(eval $(1) = $(2)))
endef

# Allow setting CC and AR, or setting CROSS_COMPILE as a prefix.
$(call allow-override,CC,$(CROSS_COMPILE)gcc)
$(call allow-override,AR,$(CROSS_COMPILE)ar)

INSTALL = install

# Use DESTDIR for installing into a different root directory.
# This is useful for building a package. The program will be
# installed in this directory as if it was the root directory.
# Then the build tool can move it later.
DESTDIR ?=
DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))'

include $(srctree)/tools/scripts/Makefile.arch

ifeq ($(LP64), 1)
  libdir_relative = lib64
else
  libdir_relative = lib
endif

prefix ?= /usr/local
libdir = $(prefix)/$(libdir_relative)
man_dir = $(prefix)/share/man
man_dir_SQ = '$(subst ','\'',$(man_dir))'

export man_dir man_dir_SQ INSTALL
export DESTDIR DESTDIR_SQ

include ../../scripts/Makefile.include

# copy a bit from Linux kbuild

ifeq ("$(origin V)", "command line")
  VERBOSE = $(V)
endif
ifndef VERBOSE
  VERBOSE = 0
endif

FEATURE_USER = .libbpf
FEATURE_TESTS = libelf libelf-getphdrnum libelf-mmap bpf
FEATURE_DISPLAY = libelf bpf

INCLUDES = -I. -I$(srctree)/tools/include -I$(srctree)/tools/arch/$(ARCH)/include/uapi -I$(srctree)/tools/include/uapi
FEATURE_CHECK_CFLAGS-bpf = $(INCLUDES)

check_feat := 1
NON_CHECK_FEAT_TARGETS := clean TAGS tags cscope help
ifdef MAKECMDGOALS
ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),)
  check_feat := 0
endif
endif

ifeq ($(check_feat),1)
ifeq ($(FEATURES_DUMP),)
include $(srctree)/tools/build/Makefile.feature
else
include $(FEATURES_DUMP)
endif
endif

export prefix libdir src obj

# Shell quotes
libdir_SQ = $(subst ','\'',$(libdir))
libdir_relative_SQ = $(subst ','\'',$(libdir_relative))
plugin_dir_SQ = $(subst ','\'',$(plugin_dir))

LIB_FILE = libbpf.a libbpf.so

VERSION		= $(BPF_VERSION)
PATCHLEVEL	= $(BPF_PATCHLEVEL)
EXTRAVERSION	= $(BPF_EXTRAVERSION)

OBJ		= $@
N		=

LIBBPF_VERSION = $(BPF_VERSION).$(BPF_PATCHLEVEL).$(BPF_EXTRAVERSION)

# Set compile option CFLAGS
ifdef EXTRA_CFLAGS
  CFLAGS := $(EXTRA_CFLAGS)
else
  CFLAGS := -g -Wall
endif

ifeq ($(feature-libelf-mmap), 1)
  override CFLAGS += -DHAVE_LIBELF_MMAP_SUPPORT
endif

ifeq ($(feature-libelf-getphdrnum), 1)
  override CFLAGS += -DHAVE_ELF_GETPHDRNUM_SUPPORT
endif

# Append required CFLAGS
override CFLAGS += $(EXTRA_WARNINGS)
override CFLAGS += -Werror -Wall
override CFLAGS += -fPIC
override CFLAGS += $(INCLUDES)

ifeq ($(VERBOSE),1)
  Q =
else
  Q = @
endif

# Disable command line variables (CFLAGS) overide from top
# level Makefile (perf), otherwise build Makefile will get
# the same command line setup.
MAKEOVERRIDES=

all:

export srctree OUTPUT CC LD CFLAGS V
include $(srctree)/tools/build/Makefile.include

BPF_IN    := $(OUTPUT)libbpf-in.o
LIB_FILE := $(addprefix $(OUTPUT),$(LIB_FILE))

CMD_TARGETS = $(LIB_FILE)

TARGETS = $(CMD_TARGETS)

all: fixdep $(VERSION_FILES) all_cmd

all_cmd: $(CMD_TARGETS)

$(BPF_IN): force elfdep bpfdep
	@(test -f ../../../include/uapi/linux/bpf.h -a -f ../../../include/uapi/linux/bpf.h && ( \
	(diff -B ../../include/uapi/linux/bpf.h ../../../include/uapi/linux/bpf.h >/dev/null) || \
	echo "Warning: tools/include/uapi/linux/bpf.h differs from kernel" >&2 )) || true
	@(test -f ../../../include/uapi/linux/bpf_common.h -a -f ../../../include/uapi/linux/bpf_common.h && ( \
	(diff -B ../../include/uapi/linux/bpf_common.h ../../../include/uapi/linux/bpf_common.h >/dev/null) || \
	echo "Warning: tools/include/uapi/linux/bpf_common.h differs from kernel" >&2 )) || true
	$(Q)$(MAKE) $(build)=libbpf

$(OUTPUT)libbpf.so: $(BPF_IN)
	$(QUIET_LINK)$(CC) --shared $^ -o $@

$(OUTPUT)libbpf.a: $(BPF_IN)
	$(QUIET_LINK)$(RM) $@; $(AR) rcs $@ $^

define update_dir
  (echo $1 > $@.tmp;				\
   if [ -r $@ ] && cmp -s $@ $@.tmp; then	\
     rm -f $@.tmp;				\
   else						\
     echo '  UPDATE                 $@';	\
     mv -f $@.tmp $@;				\
   fi);
endef

define do_install
	if [ ! -d '$(DESTDIR_SQ)$2' ]; then		\
		$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$2';	\
	fi;						\
	$(INSTALL) $1 '$(DESTDIR_SQ)$2'
endef

install_lib: all_cmd
	$(call QUIET_INSTALL, $(LIB_FILE)) \
		$(call do_install,$(LIB_FILE),$(libdir_SQ))

install: install_lib

### Cleaning rules

config-clean:
	$(call QUIET_CLEAN, config)
	$(Q)$(MAKE) -C $(srctree)/tools/build/feature/ clean >/dev/null

clean:
	$(call QUIET_CLEAN, libbpf) $(RM) *.o *~ $(TARGETS) *.a *.so $(VERSION_FILES) .*.d .*.cmd \
		$(RM) LIBBPF-CFLAGS
	$(call QUIET_CLEAN, core-gen) $(RM) $(OUTPUT)FEATURE-DUMP.libbpf



PHONY += force elfdep bpfdep
force:

elfdep:
	@if [ "$(feature-libelf)" != "1" ]; then echo "No libelf found"; exit -1 ; fi

bpfdep:
	@if [ "$(feature-bpf)" != "1" ]; then echo "BPF API too old"; exit -1 ; fi

# Declare the contents of the .PHONY variable as phony.  We keep that
# information in a variable so we can use it in if_changed and friends.
.PHONY: $(PHONY)
/linux/net-next.git/diff/drivers?id=8bca927f13bc1cebe23a3709af6ce3016400f7ac&amp;id2=b98b0bc8c431e3ceb4b26b0dfc8db509518fb290'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net</div><div class='commit-msg'>Pull networking fixes from David Miller:

 1) Lots more phydev and probe error path leaks in various drivers by
    Johan Hovold.

 2) Fix race in packet_set_ring(), from Philip Pettersson.

 3) Use after free in dccp_invalid_packet(), from Eric Dumazet.

 4) Signnedness overflow in SO_{SND,RCV}BUFFORCE, also from Eric
    Dumazet.

 5) When tunneling between ipv4 and ipv6 we can be left with the wrong
    skb-&gt;protocol value as we enter the IPSEC engine and this causes all
    kinds of problems. Set it before the output path does any
    dst_output() calls, from Eli Cooper.

 6) bcmgenet uses wrong device struct pointer in DMA API calls, fix from
    Florian Fainelli.

 7) Various netfilter nat bug fixes from FLorian Westphal.

 8) Fix memory leak in ipvlan_link_new(), from Gao Feng.

 9) Locking fixes, particularly wrt. socket lookups, in l2tp from
    Guillaume Nault.

10) Avoid invoking rhash teardowns in atomic context by moving netlink
    cb-&gt;done() dump completion from a worker thread. Fix from Herbert
    Xu.

11) Buffer refcount problems in tun and macvtap on errors, from Jason
    Wang.

12) We don't set Kconfig symbol DEFAULT_TCP_CONG properly when the user
    selects BBR. Fix from Julian Wollrath.

13) Fix deadlock in transmit path on altera TSE driver, from Lino
    Sanfilippo.

14) Fix unbalanced reference counting in dsa_switch_tree, from Nikita
    Yushchenko.

15) tc_tunnel_key needs to be properly exported to userspace via uapi,
    fix from Roi Dayan.

16) rds_tcp_init_net() doesn't unregister notifier in error path, fix
    from Sowmini Varadhan.

17) Stale packet header pointer access after pskb_expand_head() in
    genenve driver, fix from Sabrina Dubroca.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (103 commits)
  net: avoid signed overflows for SO_{SND|RCV}BUFFORCE
  geneve: avoid use-after-free of skb-&gt;data
  tipc: check minimum bearer MTU
  net: renesas: ravb: unintialized return value
  sh_eth: remove unchecked interrupts for RZ/A1
  net: bcmgenet: Utilize correct struct device for all DMA operations
  NET: usb: qmi_wwan: add support for Telit LE922A PID 0x1040
  cdc_ether: Fix handling connection notification
  ip6_offload: check segs for NULL in ipv6_gso_segment.
  RDS: TCP: unregister_netdevice_notifier() in error path of rds_tcp_init_net
  Revert: "ip6_tunnel: Update skb-&gt;protocol to ETH_P_IPV6 in ip6_tnl_xmit()"
  ipv6: Set skb-&gt;protocol properly for local output
  ipv4: Set skb-&gt;protocol properly for local output
  packet: fix race condition in packet_set_ring
  net: ethernet: altera: TSE: do not use tx queue lock in tx completion handler
  net: ethernet: altera: TSE: Remove unneeded dma sync for tx buffers
  net: ethernet: stmmac: fix of-node and fixed-link-phydev leaks
  net: ethernet: stmmac: platform: fix outdated function header
  net: ethernet: stmmac: dwmac-meson8b: fix probe error path
  net: ethernet: stmmac: dwmac-generic: fix probe error path
  ...
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=8bca927f13bc1cebe23a3709af6ce3016400f7ac'>Diffstat</a> (limited to 'drivers')</div><table summary='diffstat' class='diffstat'>