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```sh
cd /path/to/cmake/source
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr/local/cares -G "Ninja" ..
ninja
sudo ninja install
```

Windows MSVC Command Line
-------------------------

```
cd \path\to\cmake\source
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=C:\cares -G "NMake Makefiles" ..
nmake
nmake install
```

Windows MinGW-w64 Command Line via MSYS
---------------------------------------
```
cd \path\to\cmake\source
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=C:\cares -G "MSYS Makefiles" ..
make
make install
```


Platform-specific build systems
===============================

Win32
-----

### Building Windows DLLs and C run-time (CRT) linkage issues

As a general rule, building a DLL with static CRT linkage is highly
discouraged, and intermixing CRTs in the same app is something to
avoid at any cost.

Reading and comprehension of Microsoft Knowledge Base articles
KB94248 and KB140584 is a must for any Windows developer. Especially
important is full understanding if you are not going to follow the
advice given above.

 - [KB94248](http://support.microsoft.com/kb/94248/en-us) - How To Use the C Run-Time

 - [KB140584](http://support.microsoft.com/kb/140584/en-us) - How to link with the correct C Run-Time (CRT) library

 - [KB190799](http://msdn.microsoft.com/en-us/library/ms235460) - Potential Errors Passing CRT Objects Across DLL Boundaries

If your app is misbehaving in some strange way, or it is suffering
from memory corruption, before asking for further help, please try
first to rebuild every single library your app uses as well as your
app using the debug multithreaded dynamic C runtime.


### MingW32

Make sure that MinGW32's bin dir is in the search path, for example:

    set PATH=c:\mingw32\bin;%PATH%

then run 'make -f Makefile.m32' in the root dir.


### MSVC 6 caveats

If you use MSVC 6 it is required that you use the February 2003 edition PSDK:
http://www.microsoft.com/msdownload/platformsdk/sdkupdate/psdk-full.htm


### MSVC from command line

Run the `vcvars32.bat` file to get a proper environment. The
`vcvars32.bat` file is part of the Microsoft development environment and
you may find it in `C:\Program Files\Microsoft Visual Studio\vc98\bin`
provided that you installed Visual C/C++ 6 in the default directory.

Further details in [README.msvc](README.msvc)


### MSVC IDEs

Details in [README.msvc](README.msvc)


### Important static c-ares usage note

When building an application that uses the static c-ares library, you must
add `-DCARES_STATICLIB` to your `CFLAGS`.  Otherwise the linker will look for
dynamic import symbols.


IBM OS/2
--------

Building under OS/2 is not much different from building under unix.
You need:

  - emx 0.9d
  - GNU make
  - GNU patch
  - ksh
  - GNU bison
  - GNU file utilities
  - GNU sed
  - autoconf 2.13

If during the linking you get an error about `_errno` being an undefined
symbol referenced from the text segment, you need to add `-D__ST_MT_ERRNO__`
in your definitions.

If you're getting huge binaries, probably your makefiles have the `-g` in
`CFLAGS`.