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
|
libs-list :=
ifeq ($(OS), Darwin)
SO_EXT = dylib
else
SO_EXT = so
endif
# Build a library with symbolic name $(1). The library is defined by
# various variables prefixed by ‘$(1)_’:
#
# - $(1)_NAME: the name of the library (e.g. ‘libfoo’); defaults to
# $(1).
#
# - $(1)_DIR: the directory where the (non-installed) library will be
# placed.
#
# - $(1)_SOURCES: the source files of the library.
#
# - $(1)_CFLAGS: additional C compiler flags.
#
# - $(1)_CXXFLAGS: additional C++ compiler flags.
#
# - $(1)_ORDER_AFTER: a set of targets on which the object files of
# this libraries will have an order-only dependency.
#
# - $(1)_LIBS: the symbolic names of other libraries on which this
# library depends.
#
# - $(1)_ALLOW_UNDEFINED: if set, the library is allowed to have
# undefined symbols. Has no effect for static libraries.
#
# - $(1)_LDFLAGS: additional linker flags.
#
# - $(1)_LDFLAGS_PROPAGATED: additional linker flags, also propagated
# to the linking of programs/libraries that use this library.
#
# - $(1)_FORCE_INSTALL: if defined, the library will be installed even
# if it's not needed (i.e. dynamically linked) by a program.
#
# - $(1)_INSTALL_DIR: the directory where the library will be
# installed. Defaults to $(libdir).
#
# - BUILD_SHARED_LIBS: if equal to ‘1’, a dynamic library will be
# built, otherwise a static library.
define build-library
$(1)_NAME ?= $(1)
_d := $$(strip $$($(1)_DIR))
_srcs := $$(sort $$(foreach src, $$($(1)_SOURCES), $$(src)))
$(1)_OBJS := $$(addsuffix .o, $$(basename $$(_srcs)))
_libs := $$(foreach lib, $$($(1)_LIBS), $$($$(lib)_PATH))
$(1)_INSTALL_DIR ?= $$(libdir)
$(1)_LDFLAGS_USE :=
$(1)_LDFLAGS_USE_INSTALLED :=
$$(eval $$(call create-dir, $$(_d)))
ifeq ($(BUILD_SHARED_LIBS), 1)
ifdef $(1)_ALLOW_UNDEFINED
ifeq ($(OS), Darwin)
$(1)_LDFLAGS += -undefined suppress -flat_namespace
endif
else
ifneq ($(OS), Darwin)
$(1)_LDFLAGS += -Wl,-z,defs
endif
endif
ifneq ($(OS), Darwin)
$(1)_LDFLAGS += -Wl,-soname=$$($(1)_NAME).$(SO_EXT)
endif
$(1)_PATH := $$(_d)/$$($(1)_NAME).$(SO_EXT)
$$($(1)_PATH): $$($(1)_OBJS) $$(_libs) | $$(_d)/
$$(trace-ld) $(CXX) -o $$@ -shared $$(GLOBAL_LDFLAGS) $$($(1)_OBJS) $$($(1)_LDFLAGS) $$($(1)_LDFLAGS_PROPAGATED) $$(foreach lib, $$($(1)_LIBS), $$($$(lib)_LDFLAGS_USE))
$(1)_LDFLAGS_USE += -L$$(_d) -Wl,-rpath,$$(abspath $$(_d)) -l$$(patsubst lib%,%,$$(strip $$($(1)_NAME)))
$(1)_INSTALL_PATH := $(DESTDIR)$$($(1)_INSTALL_DIR)/$$($(1)_NAME).$(SO_EXT)
_libs_final := $$(foreach lib, $$($(1)_LIBS), $$($$(lib)_INSTALL_PATH))
$$(eval $$(call create-dir, $$($(1)_INSTALL_DIR)))
$$($(1)_INSTALL_PATH): $$($(1)_OBJS) $$(_libs_final) | $(DESTDIR)$$($(1)_INSTALL_DIR)/
$$(trace-ld) $(CXX) -o $$@ -shared $$(GLOBAL_LDFLAGS) $$($(1)_OBJS) $$($(1)_LDFLAGS) $$($(1)_LDFLAGS_PROPAGATED) $$(foreach lib, $$($(1)_LIBS), $$($$(lib)_LDFLAGS_USE_INSTALLED))
$(1)_LDFLAGS_USE_INSTALLED += -L$$(DESTDIR)$$($(1)_INSTALL_DIR) -l$$(patsubst lib%,%,$$(strip $$($(1)_NAME)))
ifeq ($(SET_RPATH_TO_LIBS), 1)
$(1)_LDFLAGS_USE_INSTALLED += -Wl,-rpath,$$($(1)_INSTALL_DIR)
else
$(1)_LDFLAGS_USE_INSTALLED += -Wl,-rpath-link,$$($(1)_INSTALL_DIR)
endif
ifdef $(1)_FORCE_INSTALL
install: $$($(1)_INSTALL_PATH)
endif
else
$(1)_PATH := $$(_d)/$$($(1)_NAME).a
$$($(1)_PATH): $$($(1)_OBJS) | $$(_d)/
$(trace-ar) ar crs $$@ $$?
$(1)_LDFLAGS_USE += $$($(1)_PATH) $$($(1)_LDFLAGS)
$(1)_INSTALL_PATH := $$(libdir)/$$($(1)_NAME).a
endif
$(1)_LDFLAGS_USE += $$($(1)_LDFLAGS_PROPAGATED)
$(1)_LDFLAGS_USE_INSTALLED += $$($(1)_LDFLAGS_PROPAGATED)
# Propagate CFLAGS and CXXFLAGS to the individual object files.
$$(foreach obj, $$($(1)_OBJS), $$(eval $$(obj)_CFLAGS=$$($(1)_CFLAGS)))
$$(foreach obj, $$($(1)_OBJS), $$(eval $$(obj)_CXXFLAGS=$$($(1)_CXXFLAGS)))
# Make each object file depend on the common dependencies.
$$(foreach obj, $$($(1)_OBJS), $$(eval $$(obj): $$($(1)_COMMON_DEPS) $$(GLOBAL_COMMON_DEPS)))
# Make each object file have order-only dependencies on the common
# order-only dependencies. This includes the order-only dependencies
# of libraries we're depending on.
$(1)_ORDER_AFTER_CLOSED = $$($(1)_ORDER_AFTER) $$(foreach lib, $$($(1)_LIBS), $$($$(lib)_ORDER_AFTER_CLOSED))
$$(foreach obj, $$($(1)_OBJS), $$(eval $$(obj): | $$($(1)_ORDER_AFTER_CLOSED) $$(GLOBAL_ORDER_AFTER)))
# Include .dep files, if they exist.
$(1)_DEPS := $$(foreach fn, $$($(1)_OBJS), $$(call filename-to-dep, $$(fn)))
-include $$($(1)_DEPS)
libs-list += $$($(1)_PATH)
clean-files += $$(_d)/*.a $$(_d)/*.$(SO_EXT) $$(_d)/*.o $$(_d)/.*.dep $$($(1)_DEPS) $$($(1)_OBJS)
dist-files += $$(_srcs)
endef
|
