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
|
<HTML
><HEAD
><TITLE
>Looking up package directories</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
"><LINK
REL="HOME"
TITLE="The findlib User's Guide"
HREF="index.html"><LINK
REL="UP"
TITLE="Using packages"
HREF="c74.html"><LINK
REL="PREVIOUS"
TITLE="Using packages"
HREF="c74.html"><LINK
REL="NEXT"
TITLE="How a package directory looks like"
HREF="x89.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"
>The findlib User's Guide</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="c74.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
>Chapter 2. Using packages</TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="x89.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="AEN81">Looking up package directories</H1
><P
>The package manager knows the preferred location for packages (this
location is compiled in), which is usually
/usr/local/lib/ocaml/site-lib. You can ask the package manager where
package p is stored by simply typing</P
><PRE
CLASS="PROGRAMLISTING"
>ocamlfind query p</PRE
><P
>and it will answer something like</P
><PRE
CLASS="PROGRAMLISTING"
>/usr/local/lib/ocaml/site-lib/p</PRE
><P
>There is an environment variable OCAMLPATH which can specify further
directories where packages are stored. (The search order is: first
the directories in OCAMLPATH in turn, then the default path
set in ocamlfind.conf)</P
><P
>Historically, this kind of query was the first and only way of using
ocamlfind, and because of the similiarity to the Unix find command it
got its name. Finding out package locations is a basic but
nethertheless important feature because it hides the details of the
filesystem hierarchy. It is sufficient only to know the name of the
package, and if needed, you can use the lookup mechanism implemented
in ocamlfind to get the concrete directory.</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="c74.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="x89.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>Using packages</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="c74.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>How a package directory looks like</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>
|
