Dominick Meglio's description how to build ares for libcurl on win32

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.