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$Id$
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How To Build libcurl to Use ares For Asynch Name Resolves
=========================================================
ares:
ftp://athena-dist.mit.edu/pub/ATHENA/ares/ares-1.1.1.tar.gz
http://curl.haxx.se/dev/ares-1.1.1.tar.gz
http://curl.sourceforge.net/dev/ares-1.1.1.tar.gz
http://curl.planetmirror.com/dev/ares-1.1.1.tar.gz
http://curl.tsuren.net/dev/ares-1.1.1.tar.gz
c-ares: (a patched and improved version of ares)
http://curl.haxx.se/beta/arescurl-1.0-pre1.tar.gz
NOTE
libcurl works with ares 1.1.1, but several patches and improvements have
been put into the c-ares package which has made it more portable and better
working on several platforms.
Build ares
==========
1. unpack the ares archive
2. cd ares-dir
3. ./configure
4. make
Build libcurl to use ares in the curl source tree
=================================================
1. name the ares source directory 'ares' in the curl source directory
2. ./configure --enable-ares
3. make
Build libcurl to use an installed ares
======================================
1. ./configure --enable-ares=/path/to/ares/install
2. make
Ares and ipv6
=============
If the configure script enables IPv6 support you need to explicitly disable
that (--disable-ipv6) since ares isn't IPv6 compatible (yet).
Ares on win32
=============
(description brought by Dominick Meglio)
First I compiled curl-ares. I changed the default C runtime library to be the
single-threaded rather than the multi-threaded (this seems to be required to
prevent linking errors later on). Then I simply build the areslib project (the
other projects adig/ahost seem to fail under MSVC).
Next was libcurl. I opened lib/config-win32.h and I added a:
#define USE_ARES 1
Next thing I added was, near the HAVE_GETTIMEOFDAY checks I added:
#ifdef USE_ARES
#define HAVE_GETTIMEOFDAY 1
#endif
The reason is, it seems curl-ares has a gettimeofday function in it (perhaps
this should be made static in ares to avoid this kludge?) To prevent a
duplicate symbol error, I had to make sure libcurl didn't also try and create
a gettimeofday() function.
Next thing I did was I added the path for the ares includes to the include
path, and the libares.lib to the libraries.
Lastly, I also changed libcurl to be single-threaded rather than
multi-threaded, again this was to prevent some duplicate symbol errors. I'm
not sure why I needed to change everything to single-threaded, but when I
didn't I got redefinition errors for several CRT functions (malloc, stricmp,
etc.)
I would have modified the MSVC++ project files, but I only have VC.NET and it
uses a different format than VC6.0 so I didn't want to go and change
everything and remove VC6.0 support from libcurl.
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