summaryrefslogtreecommitdiffstats
path: root/tools/lib/lockdep/Makefile
blob: 1d57af56814b8671c10d9619202f042ad5c031d4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
# file format version
FILE_VERSION = 1

LIBLOCKDEP_VERSION=$(shell make --no-print-directory -sC ../../.. kernelversion)

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

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))'

prefix ?= /usr/local
libdir_relative = lib
libdir = $(prefix)/$(libdir_relative)
bindir_relative = bin
bindir = $(prefix)/$(bindir_relative)

export DESTDIR DESTDIR_SQ INSTALL

MAKEFLAGS += --no-print-directory

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

# copy a bit from Linux kbuild

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

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

# Shell quotes
libdir_SQ = $(subst ','\'',$(libdir))
bindir_SQ = $(subst ','\'',$(bindir))

LIB_IN := $(OUTPUT)liblockdep-in.o

BIN_FILE = lockdep
LIB_FILE = $(OUTPUT)liblockdep.a $(OUTPUT)liblockdep.so.$(LIBLOCKDEP_VERSION)

CONFIG_INCLUDES =
CONFIG_LIBS	=
CONFIG_FLAGS	=

OBJ		= $@
N		=

export Q VERBOSE

INCLUDES = -I. -I./uinclude -I./include -I../../include $(CONFIG_INCLUDES)

# Set compile option CFLAGS if not set elsewhere
CFLAGS ?= -g -DCONFIG_LOCKDEP -DCONFIG_STACKTRACE -DCONFIG_PROVE_LOCKING -DBITS_PER_LONG=__WORDSIZE -DLIBLOCKDEP_VERSION='"$(LIBLOCKDEP_VERSION)"' -rdynamic -O0 -g
CFLAGS += -fPIC

override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ)

ifeq ($(VERBOSE),1)
  Q =
  print_shared_lib_compile =
  print_install =
else
  Q = @
  print_shared_lib_compile =	echo '  LD       '$(OBJ);
  print_static_lib_build =	echo '  LD       '$(OBJ);
  print_install =		echo '  INSTALL  '$1'	to	$(DESTDIR_SQ)$2';
endif

all:

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

do_compile_shared_library =			\
	($(print_shared_lib_compile)		\
	$(CC) --shared $^ -o $@ -lpthread -ldl -Wl,-soname='"$@"';$(shell ln -sf $@ liblockdep.so))

do_build_static_lib =				\
	($(print_static_lib_build)		\
	$(RM) $@;  $(AR) rcs $@ $^)

CMD_TARGETS = $(LIB_FILE)

TARGETS = $(CMD_TARGETS)


all: fixdep all_cmd

all_cmd: $(CMD_TARGETS)

$(LIB_IN): force
	$(Q)$(MAKE) $(build)=liblockdep

liblockdep.so.$(LIBLOCKDEP_VERSION): $(LIB_IN)
	$(Q)$(do_compile_shared_library)

liblockdep.a: $(LIB_IN)
	$(Q)$(do_build_static_lib)

tags:	force
	$(RM) tags
	find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px \
	--regex-c++='/_PE\(([^,)]*).*/PEVENT_ERRNO__\1/'

TAGS:	force
	$(RM) TAGS
	find . -name '*.[ch]' | xargs etags \
	--regex='/_PE(\([^,)]*\).*/PEVENT_ERRNO__\1/'

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

install_lib: all_cmd
	$(Q)$(call do_install,$(LIB_FILE),$(libdir_SQ))
	$(Q)$(call do_install,$(BIN_FILE),$(bindir_SQ))

install: install_lib

clean:
	$(RM) *.o *~ $(TARGETS) *.a *liblockdep*.so* $(VERSION_FILES) .*.d .*.cmd
	$(RM) tags TAGS

PHONY += force
force:

# 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)