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- How To Build libcurl to Use c-ares For Asynch Name Resolves
- ===========================================================
- c-ares:
- http://daniel.haxx.se/projects/c-ares/
- NOTE
- The latest libcurl version requires c-ares 1.4.0 or later.
- Once upon the time libcurl built fine with the "original" ares. That is no
- longer true. You need to use c-ares.
- Build c-ares
- ============
- 1. unpack the c-ares archive
- 2. cd c-ares-dir
- 3. ./configure
- 4. make
- Build libcurl to use c-ares in the curl source tree
- ===================================================
- 1. name the c-ares source directory 'ares' in the curl source directory
- (if you have checked out the curl sources from CVS, you will already have
- c-ares in a directory named ares).
- 2. ./configure --enable-ares
- 3. make
- Build libcurl to use an installed c-ares
- ========================================
- 1. ./configure --enable-ares=/path/to/ares/install
- 2. make
- c-ares and ipv6
- ===============
- If the configure script enables IPv6 support you need to explicitly disable
- that (--disable-ipv6) since c-ares isn't IPv6 compatible (yet).
- c-ares on win32
- ===============
- (description brought by Dominick Meglio)
- First I compiled c-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 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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