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
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
|
# SPDX-License-Identifier: GPL-2.0-or-later WITH LicenseRef-Autoconf-exception-macro
# SPDX-FileCopyrightText: 2020 Michael Jeanson <mjeanson@efficios.com>
# SPDX-FileCopyrightText: 2008 Francesco Salvestrini <salvestrini@users.sourceforge.net>
#
# SYNOPSIS
#
# AE_FEATURE(FEATURE-NAME, FEATURE-DESCRIPTION,
# ACTION-IF-GIVEN?, ACTION-IF-NOT-GIVEN?,
# ACTION-IF-ENABLED?, ACTION-IF-NOT-ENABLED?)
#
# DESCRIPTION
#
# AE_FEATURE is a simple wrapper for AC_ARG_ENABLE.
#
# FEATURE-NAME should consist only of alphanumeric characters, dashes,
# plus signs, and dots.
#
# FEATURE-DESCRIPTION will be formatted with AS_HELP_STRING.
#
# If the user gave configure the option --enable-FEATURE or --disable-FEATURE,
# run shell commands ACTION-IF-GIVEN. If neither option was given, run shell
# commands ACTION-IF-NOT-GIVEN. The name feature indicates an optional
#
# If the feature is enabled, run shell commands ACTION-IF-ENABLED, if it is
# disabled, run shell commands ACTION-IF-NOT-ENABLED.
#
# A FEATURE has 3 different states, enabled, disabled and undefined. The first
# two are self explanatory, the third state means it's disabled by default
# and it was not explicitly enabled or disabled by the user or by the
# AE_FEATURE_ENABLE and AE_FEATURE_DISABLE macros.
#
# A feature is disabled by default, in order to change this behaviour use the
# AE_FEATURE_DEFAULT_ENABLE and AE_FEATURE_DEFAULT_DISABLE
# macros.
#
# A simple example:
#
# AE_FEATURE_DEFAULT_ENABLE
# AE_FEATURE(feature_xxxxx, [turns on/off XXXXX support])
#
# ...
#
# AE_FEATURE_DEFAULT_DISABLE
# AE_FEATURE(feature_yyyyy, [turns on/off YYYYY support])
# AM_CONDITIONAL(YYYYY, AE_IS_FEATURE_ENABLED([feature_yyyyy]))
#
# AE_FEATURE_DEFAULT_ENABLE
# AE_FEATURE(...)
#
# ...
#
# Use AE_FEATURE_ENABLE or AE_FEATURE_DISABLE in order to
# enable or disable a specific feature.
#
# Another simple example:
#
# AS_IF([some_test_here],[AE_FEATURE_ENABLE(feature_xxxxx)],[])
#
# AE_FEATURE(feature_xxxxx, [turns on/off XXXXX support],
# HAVE_XXXXX, [Define if you want XXXXX support])
# AE_FEATURE(feature_yyyyy, [turns on/off YYYYY support],
# HAVE_YYYYY, [Define if you want YYYYY support])
#
# ...
#
# NOTE: AE_FEATURE_ENABLE/DISABLE() must be placed first of the relative
# AE_FEATURE() macro if you want the the proper ACTION-IF-ENABLED and
# ACTION-IF-NOT-ENABLED to run.
#serial 3
# AE_FEATURE_DEFAULT_ENABLE: The next feature defined with AE_FEATURE will
# default to enable.
AC_DEFUN([AE_FEATURE_DEFAULT_ENABLE], [
m4_define([ae_feature_default_arg], [yes])
m4_define([ae_feature_default_switch], [disable])
])
# AE_FEATURE_DEFAULT_DISABLE: The next feature defined with AE_FEATURE will
# default to disable.
#
AC_DEFUN([AE_FEATURE_DEFAULT_DISABLE], [
m4_define([ae_feature_default_arg], [no])
m4_define([ae_feature_default_switch], [enable])
])
# AE_FEATURE_ENABLE(FEATURE-NAME): Enable the FEATURE, this will override the
# user's choice if it was made.
#
AC_DEFUN([AE_FEATURE_ENABLE],[ dnl
enable_[]patsubst([$1], -, _)[]=yes
])
# AE_FEATURE_DISABLE(FEATURE-NAME): Disable the FEATURE, this will override the
# user's choice if it was made.
#
AC_DEFUN([AE_FEATURE_DISABLE],[ dnl
enable_[]patsubst([$1], -, _)[]=no
])
# AE_IF_FEATURE_ENABLED(FEATURE-NAME, ACTION-IF-ENABLED, ACTION-IF-NOT-ENABLED?):
# Run shell code ACTION-IF-ENABLED if the FEATURE is enabled, otherwise run
# shell code ACTION-IF-NOT-ENABLED.
#
AC_DEFUN([AE_IF_FEATURE_ENABLED],[ dnl
m4_pushdef([FEATURE], patsubst([$1], -, _))dnl
AS_IF([test "$enable_[]FEATURE[]" = yes],[ dnl
$2
],[: dnl
$3
])
])
# AE_IF_FEATURE_NOT_ENABLED(FEATURE-NAME, ACTION-IF-NOT-ENABLED,
# ACTION-IF-NOT-NOT-ENABLED?):
# Run shell code ACTION-IF-NOT-ENABLED if the FEATURE is not explicitly
# enabled, otherwise run shell code ACTION-IF-NOT-NOT-DISABLED.
#
# The distinction with AE_IF_FEATURE_DISABLED is that this will also
# match a feature that is undefined.
#
# A feature is undefined when it's disabled by default and was not explicitly
# enabled or disabled by the user or by AE_FEATURE_ENABLE/DISABLE.
#
AC_DEFUN([AE_IF_FEATURE_NOT_ENABLED],[ dnl
m4_pushdef([FEATURE], patsubst([$1], -, _))dnl
AS_IF([test "$enable_[]FEATURE[]" != yes],[ dnl
$2
],[: dnl
$3
])
])
# AE_IF_FEATURE_DISABLED(FEATURE-NAME, ACTION-IF-DISABLED, ACTION-IF-NOT-DISABLED?):
# Run shell code ACTION-IF-DISABLED if the FEATURE is disabled, otherwise run
# shell code ACTION-IF-NOT-DISABLED.
#
AC_DEFUN([AE_IF_FEATURE_DISABLED],[ dnl
m4_pushdef([FEATURE], patsubst([$1], -, _))dnl
AS_IF([test "$enable_[]FEATURE[]" = no],[ dnl
$2
],[: dnl
$3
])
])
# AE_IF_FEATURE_UNDEF(FEATURE-NAME, ACTION-IF-UNDEF, ACTION-IF-NOT-UNDEF?):
# Run shell code ACTION-IF-UNDEF if the FEATURE is undefined, otherwise run
# shell code ACTION-IF-NOT-UNDEF.
#
# A feature is undefined when it's disabled by default and was not explicitly
# enabled or disabled by the user or by AE_FEATURE_ENABLE/DISABLE.
#
AC_DEFUN([AE_IF_FEATURE_UNDEF],[ dnl
m4_pushdef([FEATURE], patsubst([$1], -, _))dnl
AS_IF([test "x$enable_[]FEATURE[]" = x],[ dnl
$2
],[: dnl
$3
])
])
# AE_IS_FEATURE_ENABLED(FEATURE-NAME): outputs a shell condition (suitable
# for use in a shell if statement) that will return true if the FEATURE is
# enabled.
#
AC_DEFUN([AE_IS_FEATURE_ENABLED],[dnl
m4_pushdef([FEATURE], patsubst([$1], -, _))dnl
test "x$enable_[]FEATURE[]" = xyes dnl
])
dnl Disabled by default, unless already overridden
m4_ifndef([ae_feature_default_arg],[AE_FEATURE_DEFAULT_DISABLE])
# AE_FEATURE(FEATURE-NAME, FEATURE-DESCRIPTION,
# ACTION-IF-GIVEN?, ACTION-IF-NOT-GIVEN?,
# ACTION-IF-ENABLED?, ACTION-IF-NOT-ENABLED?):
#
#
AC_DEFUN([AE_FEATURE],[ dnl
m4_pushdef([FEATURE], patsubst([$1], -, _))dnl
dnl If the option wasn't specified and the default is enabled, set enable_FEATURE to yes
AS_IF([test "x$enable_[]FEATURE[]" = x && test "ae_feature_default_arg" = yes],[ dnl
enable_[]FEATURE[]="ae_feature_default_arg"
])
AC_ARG_ENABLE([$1],
AS_HELP_STRING([--ae_feature_default_switch-$1],dnl
[$2]),[
case "${enableval}" in
yes)
enable_[]FEATURE[]=yes
;;
no)
enable_[]FEATURE[]=no
;;
*)
AC_MSG_ERROR([bad value ${enableval} for feature --$1])
;;
esac
$3
],[: dnl
$4
])
AS_IF([test "$enable_[]FEATURE[]" = yes],[: dnl
$5
],[: dnl
$6
])
m4_popdef([FEATURE])dnl
])
|
