5 \___|\___/|_| \_\_____|
7 How To Build libcurl to Use c-ares For Asynch Name Resolves
8 ===========================================================
11 http://c-ares.haxx.se/
14 The latest libcurl version requires c-ares 1.6.0 or later.
16 Once upon the time libcurl built fine with the "original" ares. That is no
17 longer true. You need to use c-ares.
22 1. unpack the c-ares archive
28 Build libcurl to use c-ares in the curl source tree
29 ===================================================
31 1. name or symlink the c-ares source directory 'ares' in the curl source
33 2. ./configure --enable-ares
35 Optionally, you can point out the c-ares install tree root with the the
40 Build libcurl to use an installed c-ares
41 ========================================
43 1. ./configure --enable-ares=/path/to/ares/install
48 (description brought by Dominick Meglio)
50 First I compiled c-ares. I changed the default C runtime library to be the
51 single-threaded rather than the multi-threaded (this seems to be required to
52 prevent linking errors later on). Then I simply build the areslib project (the
53 other projects adig/ahost seem to fail under MSVC).
55 Next was libcurl. I opened lib/config-win32.h and I added a:
58 Next thing I did was I added the path for the ares includes to the include
59 path, and the libares.lib to the libraries.
61 Lastly, I also changed libcurl to be single-threaded rather than
62 multi-threaded, again this was to prevent some duplicate symbol errors. I'm
63 not sure why I needed to change everything to single-threaded, but when I
64 didn't I got redefinition errors for several CRT functions (malloc, stricmp,
67 I would have modified the MSVC++ project files, but I only have VC.NET and it
68 uses a different format than VC6.0 so I didn't want to go and change
69 everything and remove VC6.0 support from libcurl.