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
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
# Generate/check/update a .h file to reflect the values of Makefile
# variables
#
# Example usage (by default, check-conf-h will consider all CFG_*
# and _CFG_* variables plus PLATFORM_*):
#
# path/to/conf.h: FORCE
# $(call check-conf-h)
#
# Or, to include only the variables with the given prefix(es):
#
# path/to/crypto_config.h: FORCE
# $(call check-conf-h,CFG_CRYPTO_ CRYPTO_)
define check-conf-h
$(q)set -e; \
$(cmd-echo-silent) ' CHK $@'; \
cnf='$(strip $(foreach var, \
$(call cfg-vars-by-prefix,$1), \
$(call cfg-make-define,$(var))))'; \
guard="_`echo $@ | tr -- -/.+ _`_"; \
mkdir -p $(dir $@); \
echo "#ifndef $${guard}" >$@.tmp; \
echo "#define $${guard}" >>$@.tmp; \
echo -n "$${cnf}" | sed 's/_nl_ */\n/g' >>$@.tmp; \
echo "#endif" >>$@.tmp; \
$(call mv-if-changed,$@.tmp,$@)
endef
define check-conf-cmake
$(q)set -e; \
$(cmd-echo-silent) ' CHK $@'; \
cnf='$(strip $(foreach var, \
$(call cfg-vars-by-prefix,$1), \
$(call cfg-cmake-set,$(var))))'; \
mkdir -p $(dir $@); \
echo "# auto-generated TEE configuration file" >$@.tmp; \
echo "# TEE version ${TEE_IMPL_VERSION}" >>$@.tmp; \
echo -n "$${cnf}" | sed 's/_nl_ */\n/g' >>$@.tmp; \
$(call mv-if-changed,$@.tmp,$@)
endef
define check-conf-mk
$(q)set -e; \
$(cmd-echo-silent) ' CHK $@'; \
cnf='$(strip $(foreach var, \
$(call cfg-vars-by-prefix,CFG_), \
$(strip $(var)=$($(var))_nl_)))'; \
mkdir -p $(dir $@); \
echo "# auto-generated TEE configuration file" >$@.tmp; \
echo "# TEE version ${TEE_IMPL_VERSION}" >>$@.tmp; \
echo "ARCH=${ARCH}" >>$@.tmp; \
echo "PLATFORM=${PLATFORM}" >>$@.tmp; \
echo "PLATFORM_FLAVOR=${PLATFORM_FLAVOR}" >>$@.tmp; \
echo -n "$${cnf}" | sed 's/_nl_ */\n/g' >>$@.tmp; \
$(call mv-if-changed,$@.tmp,$@)
endef
# Rename $1 to $2 only if file content differs. Otherwise just delete $1.
define mv-if-changed
if cmp -s $2 $1; then \
rm -f $1; \
else \
$(cmd-echo-silent) ' UPD $2'; \
mv $1 $2; \
fi
endef
define cfg-vars-by-prefix
$(strip $(if $(1),$(call _cfg-vars-by-prefix,$(1)),
$(call _cfg-vars-by-prefix,CFG_ _CFG_ PLATFORM_)))
endef
define _cfg-vars-by-prefix
$(sort $(foreach prefix,$(1),$(filter $(prefix)%,$(.VARIABLES))))
endef
# Convert a makefile variable to a #define
# <undefined>, n => <undefined>
# y => 1
# <other value> => <other value>
define cfg-make-define
$(strip $(if $(filter y,$($1)),
#define $1 1_nl_,
$(if $(filter xn x,x$($1)),
/* $1 is not set */_nl_,
#define $1 $($1)_nl_)))
endef
# Convert a makefile variable to a cmake set statement
# <undefined>, n => <undefined>
# <other value> => <other value>
define cfg-cmake-set
$(strip $(if $(filter xn x,x$($1)),
# $1 is not set _nl_,
set($1 $($1))_nl_))
endef
# Returns 'y' if at least one variable is 'y', empty otherwise
# Example:
# FOO_OR_BAR := $(call cfg-one-enabled, FOO BAR)
cfg-one-enabled = $(if $(filter y, $(foreach var,$(1),$($(var)))),y,)
# Returns 'y' if all variables are 'y', empty otherwise
# Example:
# FOO_AND_BAR := $(call cfg-all-enabled, FOO BAR)
cfg-all-enabled = \
$(strip \
$(if $(1), \
$(if $(filter y,$($(firstword $(1)))), \
$(call cfg-all-enabled,$(filter-out $(firstword $(1)),$(1))), \
), \
y \
) \
)
# Disable a configuration variable if some dependency is disabled
# Example:
# $(eval $(call cfg-depends-all,FOO,BAR BAZ))
# Will clear FOO if it is initially 'y' and BAR or BAZ are not 'y'
cfg-depends-all = \
$(strip \
$(if $(filter y, $($(1))), \
$(if $(call cfg-all-enabled,$(2)), \
, \
$(warning Warning: Disabling $(1) [requires $(strip $(2))]) \
override $(1) := \
) \
) \
)
# Disable a configuration variable if all dependencies are disabled
# Example:
# $(eval $(call cfg-depends-one,FOO,BAR BAZ))
# Will clear FOO if it is initially 'y' and both BAR and BAZ are not 'y'
cfg-depends-one = \
$(strip \
$(if $(filter y, $($(1))), \
$(if $(call cfg-one-enabled,$(2)), \
, \
$(warning Warning: Disabling $(1) [requires (one of) $(strip $(2))]) \
override $(1) := \
) \
) \
)
# Enable all depend variables
# Example:
# $(eval $(call cfg-enable-all-depends,FOO,BAR BAZ))
# Will enable BAR and BAZ if FOO is initially 'y'
cfg-enable-all-depends = \
$(strip \
$(if $(2), \
$(if $(filter y, $($(1))), \
$(if $(filter y,$($(firstword $(2)))), \
, \
$(warning Warning: Enabling $(firstword $(2)) [required by $(1)]) \
$(eval override $(firstword $(2)) := y) \
) \
$(call cfg-enable-all-depends,$(1),$(filter-out $(firstword $(2)),$(2))), \
) \
, \
) \
)
# Set a variable or error out if it was previously set to a different value
# The reason message (3rd parameter) is optional
# Example:
# $(call force,CFG_FOO,foo,required by CFG_BAR)
define force
$(eval $(call _force,$(1),$(2),$(3)))
endef
define _force
ifdef $(1)
ifneq ($($(1)),$(2))
ifneq (,$(3))
_reason := $$(_empty) [$(3)]
endif
$$(error $(1) is set to '$($(1))' (from $(origin $(1))) but its value must be '$(2)'$$(_reason))
endif
endif
$(1) := $(2)
endef
|
