1bdep-default-options-files(1)General Commands Manuabldep-default-options-files(1)
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6 bdep-default-options-files - specifying default options
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9 bdep command [mode-options] ...
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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 op‐
15 tions files are like options files that one can specify with --options-
16 file (bdep-common-options(1)) except that they are loaded by default.
17 The default options files are searched for in the .build2/ and
19 .build2/local/ subdirectories of each outer directory beginning from
20 the start directory and until reaching either the home directory or the
21 filesystem root directory (both excluding). Then in the .build2/ subdi‐
22 rectory of the home directory and finally in the system directory (for
23 example, /etc/build2/) if configured.
24 Once the search is complete, the files are loaded in the reverse order,
26 that is, beginning from the system directory (if any), followed by the
27 home directory, ending with the start directory, and finishing off with
28 the options specified on the command line. In other words, the files
29 are loaded from the more generic to the more specific with the command
30 line options having the ability to override any values specified in the
31 default options files.
32 The start directory, the names of the default options files, and in
34 which order they are loaded within each directory are determined by the
35 command and potentially its mode-options. See each command's DEFAULT
36 OPTIONS FILES section for details.
37 If a default options file contains --no-default-options, then the
39 search is stopped at the directory containing this file and no outer
40 files are loaded. If this option is specified on the command line, then
41 none of the default options files are searched for or loaded.
42 An additional directory containing default options files can be speci‐
44 fied with --default-options. If such a directory is a subdirectory of
45 the start directory or is between the start directory and the end of
46 the outer search, then its configuration files are loaded at the corre‐
47 sponding point in the directory hierarchy. Otherwise, they are loaded
48 after the home directory.
49 The presence of the .git filesystem entry causes the default options
51 files in this directory and any of its subdirectories to be considered
52 remote. Depending on the command, some security-sensitive options may
53 be disallowed or trigger a prompt when specified in remote options
54 files (in the current implementation this is the case even for files
55 from the .build2/local/ subdirectory since the mere location is not a
56 sufficient ground to definitively conclude that the file is not remote;
57 to be sure we would need to query the version control system). Note
58 that additional default options files specified with --default-options
59 are never considered remote.
60 The order in which default options files are loaded is traced at the
62 verbosity level 3 (-V option) or higher.
63
65 Send bug reports to the users@build2.org mailing list.
66
68 Copyright (c) 2014-2023 the build2 authors.
69 Permission is granted to copy, distribute and/or modify this document
71 under the terms of the MIT License.
72bdep 0.16.0 June 2023 bdep-default-options-files(1)