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
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<HTML
><HEAD
><TITLE
>Package and library versions</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
REL="HOME"
TITLE="Database Independent Abstraction Layer for C"
HREF="index.html"><LINK
REL="UP"
TITLE="Library and Interface Versions"
HREF="versioning.html"><LINK
REL="PREVIOUS"
TITLE="Library and Interface Versions"
HREF="versioning.html"><LINK
REL="NEXT"
TITLE="libdbi and libdbi-drivers versions"
HREF="libdbi-and-drivers-versions.html"></HEAD
><BODY
CLASS="SECT1"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>Database Independent Abstraction Layer for C: libdbi Programmer's Guide</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="versioning.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
>Chapter 6. Library and Interface Versions</TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="libdbi-and-drivers-versions.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="PACKAGE-LIBRARY-VERSION"
>6.1. Package and library versions</A
></H1
><P
>libdbi utilizes <A
HREF="http://www.gnu.org/software/libtool/"
TARGET="_top"
>libtool</A
> to manage the library in a platform-independent fashion. libtool uses an abstract library versioning scheme which consists of three numbers:</P
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>current</DT
><DD
><P
>This is the number of the current interface. The first "incarnation" is usually 0 (zero), the next version that adds or subtracts something from this interface would be 1 (think of new API functions or functions with altered parameter lists).</P
></DD
><DT
>revision</DT
><DD
><P
>This number counts the released changes of the interface which do not alter the interface (think of internal optimizations, bugfixes and so on)</P
></DD
><DT
>age</DT
><DD
><P
>This is the number of previous interfaces that the current version is backwards-compatible with. That is, if <CODE
CLASS="PARAMETER"
>current</CODE
> is "n", programs linked against "n", "n-1", and "n-2" will run with the current version.</P
></DD
></DL
></DIV
><P
>The package version number (major.minor.patch) is computed from the above numbers using the formulas:</P
><P
></P
><UL
><LI
><P
>major = current - age</P
></LI
><LI
><P
>minor = age + 8</P
></LI
><LI
><P
>patch = revision</P
></LI
></UL
><P
>The correction applied to <CODE
CLASS="VARNAME"
>minor</CODE
> is currently required to bring the package version in line with earlier releases which did not use proper libtool interface versioning. It will be dropped if <CODE
CLASS="VARNAME"
>major</CODE
> rises above zero.</P
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="versioning.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="index.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="libdbi-and-drivers-versions.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>Library and Interface Versions</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="versioning.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>libdbi and libdbi-drivers versions</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>
|
