path: root/README.cares
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authorYang Tse <>2009-04-30 12:44:17 +0000
committerYang Tse <>2009-04-30 12:44:17 +0000
commit483c51445866293d49eedb454a9a9ca9479e41e2 (patch)
treec423585c6b2830ce073b2c8827e43158b03b2dfc /README.cares
parent015399b9e79cd4845186e6ac0ab7351ca2f2cf57 (diff)
Added some notes regarding ares_build.h
Diffstat (limited to 'README.cares')
1 files changed, 38 insertions, 0 deletions
diff --git a/README.cares b/README.cares
index 5ad9ae7..98643b7 100644
--- a/README.cares
+++ b/README.cares
@@ -23,3 +23,41 @@ original ares.
You'll find all c-ares details and news here:
+The following notes apply to c-ares version 7.6.1 and later.
+* The distributed ares_build.h file is only intended to be used on systems
+ which can not run the also distributed configure script.
+* The distributed ares_build.h file is generated as a copy of ares_build.h.dist
+ when the c-ares source code distribution archive file is originally created.
+* If you check out from CVS on a non-configure platform, you must run the
+ appropriate buildconf* script to set up ares_build.h and other local files
+ before being able of compiling the library.
+* On systems capable of running the configure script, the configure process
+ will overwrite the distributed ares_build.h file with one that is suitable
+ and specific to the library being configured and built, this new file is
+ generated from the template file.
+* If you intend to distribute an already compiled c-ares library you _MUST_
+ also distribute along with it the generated ares_build.h which has been
+ used to compile it. Otherwise the library will be of no use for the users of
+ the library that you have built. It is _your_ responsability to provide this
+ file. No one at the c-ares project can know how you have built the library.
+* File ares_build.h includes platform and configuration dependant info,
+ and must not be modified by anyone. Configure script generates it for you.
+* We cannot assume anything else but very basic compiler features being
+ present. While libcurl requires an ANSI C compiler to build, some of the
+ earlier ANSI compilers clearly can't deal with some preprocessor operators.
+* Newlines must remain unix-style for older compilers' sake.
+* Comments must be written in the old-style /* unnested C-fashion */