1bdep-default-options-files(1)General Commands Manuabldep-default-options-files(1)
2
6 bdep-default-options-files - specifying default options
7
9 bdep command [mode-options] ...
10
12 Instead of having a separate config file format for tool configuration,
13 the build2 toolchain uses default options files which contain the same
14 options as what can be specified on the command line. The default
15 options files are like options files that one can specify with
16 --options-file (bdep-common-options(1)) except that they are loaded by
17 default.
18 The default options files are searched for in the .build2/ and
20 .build2/local/ subdirectories of each outer directory beginning from
21 the start directory and until reaching either the home directory or the
22 filesystem root directory (both excluding). Then in the .build2/ subdi‐
23 rectory of the home directory and finally in the system directory (for
24 example, /etc/build2/) if configured.
25 Once the search is complete, the files are loaded in the reverse order,
27 that is, beginning from the system directory (if any), followed by the
28 home directory, ending with the start directory, and finishing off with
29 the options specified on the command line. In other words, the files
30 are loaded from the more generic to the more specific with the command
31 line options having the ability to override any values specified in the
32 default options files.
33 The start directory, the names of the default options files, and in
35 which order they are loaded within each directory are determined by the
36 command and potentially its mode-options. See each command's DEFAULT
37 OPTIONS FILES section for details.
38 If a default options file contains --no-default-options, then the
40 search is stopped at the directory containing this file and no outer
41 files are loaded. If this option is specified on the command line, then
42 none of the default options files are searched for or loaded.
43 An additional directory containing default options files can be speci‐
45 fied with --default-options. If such a directory is a subdirectory of
46 the start directory or is between the start directory and the end of
47 the outer search, then its configuration files are loaded at the corre‐
48 sponding point in the directory hierarchy. Otherwise, they are loaded
49 after the home directory.
50 The presence of the .git filesystem entry causes the default options
52 files in this directory and any of its subdirectories to be considered
53 remote. Depending on the command, some security-sensitive options may
54 be disallowed or trigger a prompt when specified in remote options
55 files (in the current implementation this is the case even for files
56 from the .build2/local/ subdirectory since the mere location is not a
57 sufficient ground to definitively conclude that the file is not remote;
58 to be sure we would need to query the version control system). Note
59 that additional default options files specified with --default-options
60 are never considered remote.
61 The order in which default options files are loaded is traced at the
63 verbosity level 3 (-V option) or higher.
64
66 Send bug reports to the users@build2.org mailing list.
67
69 Copyright (c) 2014-2019 Code Synthesis Ltd
70 Permission is granted to copy, distribute and/or modify this document
72 under the terms of the MIT License.
73bdep 0.12.0 November 2019 bdep-default-options-files(1)