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
|
dnl #
dnl # DESCRIPTION:
dnl # Read meta data from the META file. When building from a git repository
dnl # the ZFS_META_RELEASE field will be overwritten if there is an annotated
dnl # tag matching the form ZFS_META_NAME-ZFS_META_VERSION-*. This allows
dnl # for working builds to be uniquely identified using the git commit hash.
dnl #
dnl # The META file format is as follows:
dnl # ^[ ]*KEY:[ \t]+VALUE$
dnl #
dnl # In other words:
dnl # - KEY is separated from VALUE by a colon and one or more spaces/tabs.
dnl # - KEY and VALUE are case sensitive.
dnl # - Leading spaces are ignored.
dnl # - First match wins for duplicate keys.
dnl #
dnl # A line can be commented out by preceding it with a '#' (or technically
dnl # any non-space character since that will prevent the regex from
dnl # matching).
dnl #
dnl # WARNING:
dnl # Placing a colon followed by a space or tab (ie, ":[ \t]+") within the
dnl # VALUE will prematurely terminate the string since that sequence is
dnl # used as the awk field separator.
dnl #
dnl # KEYS:
dnl # The following META keys are recognized:
dnl # Name, Version, Release, Date, Author, LT_Current, LT_Revision, LT_Age
dnl #
dnl # Written by Chris Dunlap <cdunlap@llnl.gov>.
dnl # Modified by Brian Behlendorf <behlendorf1@llnl.gov>.
dnl #
AC_DEFUN([ZFS_AC_META], [
AH_BOTTOM([
#undef PACKAGE
#undef PACKAGE_BUGREPORT
#undef PACKAGE_NAME
#undef PACKAGE_STRING
#undef PACKAGE_TARNAME
#undef PACKAGE_VERSION
#undef STDC_HEADERS
#undef VERSION])
AC_PROG_AWK
AC_MSG_CHECKING([metadata])
META="$srcdir/META"
_zfs_ac_meta_type="none"
if test -f "$META"; then
_zfs_ac_meta_type="META file"
ZFS_META_NAME=_ZFS_AC_META_GETVAL([(Name|Project|Package)]);
if test -n "$ZFS_META_NAME"; then
AC_DEFINE_UNQUOTED([ZFS_META_NAME], ["$ZFS_META_NAME"],
[Define the project name.]
)
AC_SUBST([ZFS_META_NAME])
fi
ZFS_META_VERSION=_ZFS_AC_META_GETVAL([Version]);
if test -n "$ZFS_META_VERSION"; then
AC_DEFINE_UNQUOTED([ZFS_META_VERSION], ["$ZFS_META_VERSION"],
[Define the project version.]
)
AC_SUBST([ZFS_META_VERSION])
fi
ZFS_META_RELEASE=_ZFS_AC_META_GETVAL([Release]);
if git rev-parse --git-dir > /dev/null 2>&1; then
_match="${ZFS_META_NAME}-${ZFS_META_VERSION}*"
_alias=$(git describe --match=${_match} 2>/dev/null)
_release=$(echo ${_alias}|cut -f3- -d'-'|sed 's/-/_/g')
if test -n "${_release}"; then
ZFS_META_RELEASE=${_release}
_zfs_ac_meta_type="git describe"
fi
fi
if test -n "$ZFS_META_RELEASE"; then
AC_DEFINE_UNQUOTED([ZFS_META_RELEASE], ["$ZFS_META_RELEASE"],
[Define the project release.]
)
AC_SUBST([ZFS_META_RELEASE])
RELEASE="$ZFS_META_RELEASE"
AC_SUBST([RELEASE])
fi
ZFS_META_LICENSE=_ZFS_AC_META_GETVAL([License]);
if test -n "$ZFS_META_LICENSE"; then
AC_DEFINE_UNQUOTED([ZFS_META_LICENSE], ["$ZFS_META_LICENSE"],
[Define the project license.]
)
AC_SUBST([ZFS_META_LICENSE])
fi
if test -n "$ZFS_META_NAME" -a -n "$ZFS_META_VERSION"; then
ZFS_META_ALIAS="$ZFS_META_NAME-$ZFS_META_VERSION"
test -n "$ZFS_META_RELEASE" &&
ZFS_META_ALIAS="$ZFS_META_ALIAS-$ZFS_META_RELEASE"
AC_DEFINE_UNQUOTED([ZFS_META_ALIAS],
["$ZFS_META_ALIAS"],
[Define the project alias string.]
)
AC_SUBST([ZFS_META_ALIAS])
fi
ZFS_META_DATA=_ZFS_AC_META_GETVAL([Date]);
if test -n "$ZFS_META_DATA"; then
AC_DEFINE_UNQUOTED([ZFS_META_DATA], ["$ZFS_META_DATA"],
[Define the project release date.]
)
AC_SUBST([ZFS_META_DATA])
fi
ZFS_META_AUTHOR=_ZFS_AC_META_GETVAL([Author]);
if test -n "$ZFS_META_AUTHOR"; then
AC_DEFINE_UNQUOTED([ZFS_META_AUTHOR], ["$ZFS_META_AUTHOR"],
[Define the project author.]
)
AC_SUBST([ZFS_META_AUTHOR])
fi
m4_pattern_allow([^LT_(CURRENT|REVISION|AGE)$])
ZFS_META_LT_CURRENT=_ZFS_AC_META_GETVAL([LT_Current]);
ZFS_META_LT_REVISION=_ZFS_AC_META_GETVAL([LT_Revision]);
ZFS_META_LT_AGE=_ZFS_AC_META_GETVAL([LT_Age]);
if test -n "$ZFS_META_LT_CURRENT" \
-o -n "$ZFS_META_LT_REVISION" \
-o -n "$ZFS_META_LT_AGE"; then
test -n "$ZFS_META_LT_CURRENT" || ZFS_META_LT_CURRENT="0"
test -n "$ZFS_META_LT_REVISION" || ZFS_META_LT_REVISION="0"
test -n "$ZFS_META_LT_AGE" || ZFS_META_LT_AGE="0"
AC_DEFINE_UNQUOTED([ZFS_META_LT_CURRENT],
["$ZFS_META_LT_CURRENT"],
[Define the libtool library 'current'
version information.]
)
AC_DEFINE_UNQUOTED([ZFS_META_LT_REVISION],
["$ZFS_META_LT_REVISION"],
[Define the libtool library 'revision'
version information.]
)
AC_DEFINE_UNQUOTED([ZFS_META_LT_AGE], ["$ZFS_META_LT_AGE"],
[Define the libtool library 'age'
version information.]
)
AC_SUBST([ZFS_META_LT_CURRENT])
AC_SUBST([ZFS_META_LT_REVISION])
AC_SUBST([ZFS_META_LT_AGE])
fi
fi
AC_MSG_RESULT([$_zfs_ac_meta_type])
]
)
dnl # _ZFS_AC_META_GETVAL (KEY_NAME_OR_REGEX)
dnl #
dnl # Returns the META VALUE associated with the given KEY_NAME_OR_REGEX expr.
dnl #
dnl # Despite their resemblance to line noise,
dnl # the "@<:@" and "@:>@" constructs are quadrigraphs for "[" and "]".
dnl # <www.gnu.org/software/autoconf/manual/autoconf.html#Quadrigraphs>
dnl #
dnl # The "$[]1" and "$[]2" constructs prevent M4 parameter expansion
dnl # so a literal $1 and $2 will be passed to the resulting awk script,
dnl # whereas the "$1" will undergo M4 parameter expansion for the META key.
dnl #
AC_DEFUN([_ZFS_AC_META_GETVAL],
[`$AWK -F ':@<:@ \t@:>@+' '$[]1 ~ /^ *$1$/ { print $[]2; exit }' $META`]dnl
)
|
