4 This is c-ares, an asynchronous resolver library. It is intended for
5 applications which need to perform DNS queries without blocking, or need to
6 perform multiple DNS queries in parallel. The primary examples of such
7 applications are servers which communicate with multiple clients and programs
8 with graphical user interfaces.
10 The full source code is available in the 'c-ares' release archives, and in a
11 git repository: http://github.com/bagder/c-ares
13 If you find bugs, correct flaws, have questions or have comments in general in
14 regard to c-ares (or by all means the original ares too), get in touch with us
15 on the c-ares mailing list: http://cool.haxx.se/mailman/listinfo/c-ares
17 c-ares is of course distributed under the same MIT-style license as the
20 You'll find all c-ares details and news here:
22 http://c-ares.haxx.se/
25 NOTES FOR C-ARES HACKERS
27 The following notes apply to c-ares version 1.7.0 and later.
29 * The distributed ares_build.h file is only intended to be used on systems
30 which can not run the also distributed configure script.
32 * The distributed ares_build.h file is generated as a copy of ares_build.h.dist
33 when the c-ares source code distribution archive file is originally created.
35 * If you check out from git on a non-configure platform, you must run the
36 appropriate buildconf* script to set up ares_build.h and other local files
37 before being able of compiling the library.
39 * On systems capable of running the configure script, the configure process
40 will overwrite the distributed ares_build.h file with one that is suitable
41 and specific to the library being configured and built, this new file is
42 generated from the ares_build.h.in template file.
44 * If you intend to distribute an already compiled c-ares library you _MUST_
45 also distribute along with it the generated ares_build.h which has been
46 used to compile it. Otherwise the library will be of no use for the users of
47 the library that you have built. It is _your_ responsibility to provide this
48 file. No one at the c-ares project can know how you have built the library.
50 * File ares_build.h includes platform and configuration dependent info,
51 and must not be modified by anyone. Configure script generates it for you.
53 * We cannot assume anything else but very basic compiler features being
54 present. While c-ares requires an ANSI C compiler to build, some of the
55 earlier ANSI compilers clearly can't deal with some preprocessor operators.
57 * Newlines must remain unix-style for older compilers' sake.
59 * Comments must be written in the old-style /* unnested C-fashion */