Atlas - Kpreprocess
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[FILE BEGIN]
1# Simple assignments (with bad formatting, as an additional test)
2
3simple-recursive=foo
4simple-immediate:=bar
5# Should become recursive
6simple-recursive-2+=baz
7
8	 whitespaced	 =	 foo
9
10
11# Simple += test. += should preserve the flavor of the variable (simple vs.
12# recursive).
13
14preserve-recursive = foo
15preserve-recursive += bar
16
17preserve-immediate := foo
18preserve-immediate += bar
19
20
21# Recursive substitution
22
23recursive = $(foo) $(bar) $($(b-char)a$(z-char))
24recursive += $(indir)
25
26foo = abc
27bar = def
28baz = ghi
29
30b-char = b
31z-char = z
32
33indir = jkl $(indir-2)
34indir-2 = mno
35
36
37# Immediate substitution
38
39def = foo
40immediate := $(undef)$(def)$(undef)$(def)
41def = bar
42undef = bar
43
44
45# Function calls
46
47# Chained function call
48quote = "$(1)" "$(2)"
49rev-quote = $(quote,$(2),$(1))
50surround-rev-quote = $(0) $(rev-quote,$(1),$(2)) $(0)
51surround-rev-quote-unused-arg = $(surround-rev-quote,$(1),$(2)) $(3)
52# No value is passed for $(3), so it expands to nothing
53fn-indir = surround-rev-quote
54messy-fn-res = $($(fn-indir)-unused-arg, a  b (,) , c  d )
55
56# Special characters in function call
57comma = ,
58right-paren = )
59dollar = $
60left-paren = (
61fn = "$(1)"
62special-chars-fn-res = $(fn,$(comma)$(dollar)$(left-paren)foo$(right-paren))
63
64
65# Variable expansions in various locations (verified by checking how the symbol
66# prints)
67
68qaz = QAZ
69echo = $(1)
70ignore-first = $(2)
71
72config PRINT_ME
73	string "$(ENV_1)" if ($(echo,FOO) && $(echo,BAR)) || !$(echo,BAZ) || !(($(qaz)))
74	default "$(echo,"foo")" if "foo $(echo,"bar") baz" = "$(undefined)"
75
76# Expansion within a symbol token, with deliberate sloppiness
77config PRINT_$(ignore-first,  ,ME)_TOO
78	bool "foo"
79	default FOO$(ignore-first,    ,BAR)BAZ$(qaz) if $(qaz)&&$(qaz)FOO&&x$(ignore-first,  ,xx)
80
81
82# Recursive expansion (throws an exception)
83
84rec-1 = x $(rec-2) y
85rec-2 = x $(rec-3) y
86rec-3 = x $(rec-1) y
87
88# Functions are allowed to reference themselves, but an exception is thrown if
89# the function seems to be stuck (the recursion gets too deep)
90safe-fn-rec = $($(1))
91safe-fn-rec-2 = $(safe-fn-rec,safe-fn-rec-3)
92safe-fn-rec-3 = foo
93safe-fn-rec-res = $(safe-fn-rec,safe-fn-rec-2)
94
95unsafe-fn-rec = $(unsafe-fn-rec,$(1))
96
97
98# Expansion in the left-hand side of assignments
99
100dummy-arg-fn = bar
101lhs-indir-1 = lhs-indir-2
102lhs-indir-2 = -baz
103rhs = value
104# LHS expands to foo-bar-baz
105foo-$(dummy-arg-fn, ignored argument )$($(lhs-indir-1)) = $(rhs)
106# Expands to empty string, accepted
107  $(undefined)  
108
109# Variable with a space in its name
110empty =
111space = $(empty) $(empty)
112foo$(space)bar = value
113space-var-res = $(foo bar)
114
115
116# Built-in functions
117
118# Expands to "baz qaz"
119shell-res = $(shell,false && echo foo bar || echo baz qaz)
120
121# Warns about output on stderr, expands to nothing
122shell-stderr-res := $(shell,echo message on stderr >&2)
123
124# Nested parens in macro call. Should give a single argument. Test it with
125# $(shell) to get a free argument number check.
126parens-res = pre-$(shell,echo '(a,$(b-char),(c,d),e)')-post
127
128# Expands to the current location
129location-res := $(filename):$(lineno)
130
131# Adds one warning, expands to nothing
132$(warning-if,,no warning)
133$(warning-if,n,no warning)
134warning-res := $(warning-if,y,a warning)
135
136# Does not cause an error, expands to nothing
137error-n-res := $(error-if,n,oops)
138
139# Causes an error when expanded
140error-y-res = $(error-if,y,oops)
141
142
143# Environment variables (for testing Kconfig.env_vars). ENV_1 is already
144# referenced above.
145env_ref_1 := xxx $(ENV_2) xxx
146env_ref_2 := $(shell,echo $(ENV_3))
147env_ref_3 :=
148env_ref_3 += $(ENV_4)
149$(warning-if,$(ENV_5),$(ENV_UNDEFINED))
150source "$(ENV_6)"
151env_ref_4 = $(ENV_7)  # Never evaluated
152
[FILE END]
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