Building an updated GDC on Windows
==================================

The procedures in this document are for setting up D 1.0 and have not
been used for D 2.0.

The build scripts included are modified from http://www.tdragon.net/recentgcc/
for gcc 4.3.1.  pthreads and iconv support is not used.

All GMP & MPFR build scripts have options (c)onfigure (m)ake (i)nstall.  The 
GCC build script was slightly modified and has (c)onfigure (b)ootstrap (m)ake 
(i)nstall.  The first run should use (b) not (m) any changes made to the source
can use (m) after.  

The following setup is required to build GCC 4.3.1 and GDC trunk for windows.
I recommned the automatic installers for simplicity and the automatic setup of
shortcuts and environment variables.  Feel free to do it how you like. 

Tools
 * TDM GCC 4.4.1 : http://sourceforge.net/projects/tdm-gcc/files/TDM-MinGW%20Installer/1.908.0/tdm-mingw-1.908.0-4.4.1-2.exe/download
 * MSYS-1.0.11   : http://sourceforge.net/projects/mingw/files/MSYS%20Base%20System/msys-1.0.11/MSYS-1.0.11.exe/download
 * MSYS updates.  Required for an out of memory issue within msys.
   * 
 * Wget from GnuWin32 : http://downloads.sourceforge.net/gnuwin32/wget-1.11.4-1-bin.zip
 * LibIntl : http://gnuwin32.sourceforge.net/downlinks/libintl-bin-zip.php
 * OpenSSL required by wget : http://downloads.sourceforge.net/gnuwin32/openssl-0.9.8h-1-bin.zip

Download the lastest gdc trunk.
hg clone http://bitbucket.org/goshawk/gdc/

Apply some patches for windows
------------------------------
At this time, these patches are not part of repository but are required to get
a working windows build. 

cd gdc

wget http://bitbucket.org/m/attch/2010/02/fix_param_zu.patch 
patch -p1 < fix_param_zu.patch

wget http://bitbucket.org/m/attch/2010/02/version_windows.patch
patch -p1 < fix_param_zu.patch

open d/dmd/root.c
goto line 595 and delete the duplicate case '/': statement

This is where binaries are stored.
mkdir /build 

Compile GMP
--------------------
mkdir -p dev/build/gmp
cd dev

wget ftp://ftp.gmplib.org/pub/gmp-4.3.2/gmp-4.3.2.tar.bz2
tar xvjf gmp-4.3.2.tar.bz2

cd build/gmp
../../gmp-build.sh c m i

Compile MPFR
------------
cd ../..

wget http://www.mpfr.org/mpfr-current/mpfr-2.4.2.tar.bz2
tar xvjf mpfr-2.4.2.tar.bz2

mkdir build/mpfr
cd build/mpfr
../../mpfr-build.sh c m i

Compile GCC with c,d
--------------------
C++ should work, but adds a considerable amount of time to the build so I 
ignored it for now.  Ideally one would compile it too as a total replacement
for Mingw.

cd ../..
wget http://ftpmirror.gnu.org/gcc/gcc-4.3.1/gcc-4.3.1.tar.bz2
tar xvjf gcc-4.3.1.tar.bz2
cd gcc-4.3.1
cp -r ../../d gcc/d
./gcc/d/setup-gcc.sh --d-language-version=1
cd ..
mkdir build/gcc
cd build/gcc
../../gcc-build.sh c b i

Finishing the build environment
-------------------------------
If your brave enough to copy the newly compiled mingw over the installed one
go for it.  Otherwise you'll have to download some extra files and extract 
them the root directory of the gdc compiler.

Building Tango 0.99.8
---------------------
I haven't had time to test the newest version of Tango, partly because there 
isn't much support for GDC as the last release was eons ago.  

Win32 files tango/sys/win32

Other Issues
------------
Variant/Traits error with arrays.  GDC has specific code for dealing with static arrays that doesn't work

phobos std/c/windows/com.d extern(Windows) fails.