doc: Update mingw cross compile instructions

The "Cross compilation for Windows with Linux" section of qemu-doc.texi
still instructs the user to use 'configure --enable-mingw32'
even after the option was removed in Aug 2008:
http://git.savannah.gnu.org/cgit/qemu.git/commit/?id=cd01b4a312248dd4e12c3d389d1a349cea4015d8

This documentation only change updates the instructions to:
* Remove use of '--enable-mingw32' in the configure example
* Correct the 'sdl-config' script name
* Remove references to i386-mingw32msvc.tar.gz which no longer exists in
  recent SDL releases
* Document the zlib dependency

Signed-off-by: Scott Tsai <scottt.tw@gmail.com>
---
 qemu-doc.texi |   45 +++++++++++++++++++++++++++++++--------------
 1 files changed, 31 insertions(+), 14 deletions(-)

On 01/29/2010 01:28 PM, Scott Tsai wrote:
> The "Cross compilation for Windows with Linux" section of qemu-doc.texi
> still instructs the user to use 'configure --enable-mingw32'
> even after the option was removed in Aug 2008:
> http://git.savannah.gnu.org/cgit/qemu.git/commit/?id=cd01b4a312248dd4e12c3d389d1a349cea4015d8
>
> This documentation only change updates the instructions to:
> * Remove use of '--enable-mingw32' in the configure example
> * Correct the 'sdl-config' script name
> * Remove references to i386-mingw32msvc.tar.gz which no longer exists in
>    recent SDL releases
> * Document the zlib dependency
>
> Signed-off-by: Scott Tsai<scottt.tw@gmail.com>
>    

Applied.  Thanks.

Regards,

Anthony Liguori
> ---
>   qemu-doc.texi |   45 +++++++++++++++++++++++++++++++--------------
>   1 files changed, 31 insertions(+), 14 deletions(-)
>
> diff --git a/qemu-doc.texi b/qemu-doc.texi
> index 2fb5c0b..4e220d0 100644
> --- a/qemu-doc.texi
> +++ b/qemu-doc.texi
> @@ -2313,11 +2313,14 @@ instructions in the download section and the FAQ.
>   @item Download
>   the MinGW development library of SDL 1.2.x
>   (@file{SDL-devel-1.2.x-@/mingw32.tar.gz}) from
> -@url{http://www.libsdl.org}. Unpack it in a temporary place, and
> -unpack the archive @file{i386-mingw32msvc.tar.gz} in the MinGW tool
> -directory. Edit the @file{sdl-config} script so that it gives the
> +@url{http://www.libsdl.org}. Unpack it in a temporary place and
> +edit the @file{sdl-config} script so that it gives the
>   correct SDL directory when invoked.
>
> +@item Install the MinGW version of zlib and make sure
> +@file{zlib.h} and @file{libz.dll.a} are in
> +MingGW's default header and linker search paths.
> +
>   @item Extract the current version of QEMU.
>
>   @item Start the MSYS shell (file @file{msys.bat}).
> @@ -2340,29 +2343,43 @@ correct SDL directory when invoked.
>   Install the MinGW cross compilation tools available at
>   @url{http://www.mingw.org/}.
>
> -@item
> -Install the Win32 version of SDL (@url{http://www.libsdl.org}) by
> -unpacking @file{i386-mingw32msvc.tar.gz}. Set up the PATH environment
> -variable so that @file{i386-mingw32msvc-sdl-config} can be launched by
> +@item Download
> +the MinGW development library of SDL 1.2.x
> +(@file{SDL-devel-1.2.x-@/mingw32.tar.gz}) from
> +@url{http://www.libsdl.org}. Unpack it in a temporary place and
> +edit the @file{sdl-config} script so that it gives the
> +correct SDL directory when invoked.  Set up the @code{PATH} environment
> +variable so that @file{sdl-config} can be launched by
>   the QEMU configuration script.
>
> +@item Install the MinGW version of zlib and make sure
> +@file{zlib.h} and @file{libz.dll.a} are in
> +MingGW's default header and linker search paths.
> +
>   @item
>   Configure QEMU for Windows cross compilation:
>   @example
> -./configure --enable-mingw32
> +PATH=/usr/i686-pc-mingw32/sys-root/mingw/bin:$PATH ./configure --cross-prefix='i686-pc-mingw32-'
> +@end example
> +The example assumes @file{sdl-config} is installed under @file{/usr/i686-pc-mingw32/sys-root/mingw/bin} and
> +MinGW cross compilation tools have names like @file{i686-pc-mingw32-gcc} and @file{i686-pc-mingw32-strip}.
> +We set the @code{PATH} environment variable to ensure the MingW version of @file{sdl-config} is used and
> +use --cross-prefix to specify the name of the cross compiler.
> +You can also use --prefix to set the Win32 install path which defaults to @file{c:/Program Files/Qemu}.
> +
> +Under Fedora Linux, you can run:
> +@example
> +yum -y install mingw32-gcc mingw32-SDL mingw32-zlib
>   @end example
> -If necessary, you can change the cross-prefix according to the prefix
> -chosen for the MinGW tools with --cross-prefix. You can also use
> ---prefix to set the Win32 install path.
> +to get a suitable cross compilation environment.
>
>   @item You can install QEMU in the installation directory by typing
> -@file{make install}. Don't forget to copy @file{SDL.dll} in the
> +@code{make install}. Don't forget to copy @file{SDL.dll} and @file{zlib1.dll} into the
>   installation directory.
>
>   @end itemize
>
> -Note: Currently, Wine does not seem able to launch
> -QEMU for Win32.
> +Wine can be used to launch the resulting qemu.exe compiled for Win32.
>
>   @node Mac OS X
>   @section Mac OS X
>