I got GDC working with GCC 4.8 on MinGW.  You can find it at

https://bitbucket.org/goshawk/gdc/downloads/GCC-4.8-MinGW-GDC-.7z

A couple of notable things.  It's ALPHA quality.  If it works, you're lucky.  You'll find regressions.  The patches required to fix some of the past bugs haven't been transferred yet.

It also fails the following DMD testsuite tests.

a20 argufilem bitops bug9010 constfold cov2 ctorpowtests eh
hello-profile nested sdtor sieve template9 test23 test34
test36 test4 test42 testdstress testmodule testsafe
testsocket testthread variadic xtest46

ddoc12 inlineheader inlinexheader line

Currently, there is no build script.  You'll need to recompile all dependencies manually.

It's standalone.  It is no longer required to have TDM or any other variant of MinGW installed prior.  This increases the size of the package.  Also, there's no optimization flags being used.  So everything is bigger as well.

It's only 32-bit.  64-bit forthcoming.

README / Build instructions
---------------------------

For Phobos licensing see phobolicense.txt.
For GDC licensing see gpl.txt.

Installation:

This is a self contained MinGW release.  Extract GDC folder to directory of choice.


Building:



** Deviating from the versions specified may cause intended consequences. ie: Build failures, random crashes **

Ensure fstab as the following entry.  Substitute C: for drive of choice(Should work)

C:/crossdev /crossdev

Download the following packages:

binutils-2.23.1.tar.gz
cloog-0.18.0.tar.gz
gcc-4.8-20130303.tar.bz2
gmp-4.3.2.tar.bz2
isl-0.11.1.tar.bz2
mingwrt-3.20-mingw32-src.tar.gz
mpc-1.0.1.tar.gz
mpfr-3.1.1.tar.bz2
w32api-3.17-2-mingw32-src.tar.lzma

Clone GDC.  The checkout version is what I have the patches will properly compile.

git clone https://github.com/D-Programming-GDC/GDC.git
git checkout 166e02c2e99c3f6926513bb617593f24b7f4456f

Extract the download files to a directory called src.

Build in this order.  All commands are assumed ran from a directory called
build within the respective source directory

GMP
---
../configure  --prefix=/crossdev/gdc/deps/gmp --disable-shared
make && make install


MPFR
----
../configure --prefix=/crossdev/gdc/deps/mpfr --with-gmp=/crossdev/gdc/deps/gmp --disable-shared
make && make install


MPC
---
../configure --prefix=/crossdev/gdc/deps/mpc --with-gmp=/crossdev/gdc/deps/gmp --with-mpfr=/crossdev/gdc/deps/mpfr/ --disable-shared
make && make install


ISL
---
../configure --prefix=/crossdev/gdc/deps/isl --disable-shared --with-gmp-prefix=/crossdev/gdc/deps/gmp
make && make install

CLOOG
-----
../configure --prefix=/crossdev/gdc/deps/cloog --with-bits=gmp --disable-shared --with-gmp=build --with-gmp-prefix=/crossdev/gdc/deps/gmp
make && make install

Binutils
--------
Apply patch mingw-tls-binutils-2.23.1.patch
../configure --prefix=/crossdev/gdc/release
make && make install

MinGWRT
-------
Apply patch mingwrt_gdc.patch.
 - Fixes %lf conversion issues.(Causes problems with 2^^4 expressions)
 - Fixes TLS offset by 1 problems
../configure --prefix=/crossdev/gdc/release
make && make install

Win32 API
---------
../configure --prefix=/crossdev/gdc/release
make && make install

GCC
---
Apply patch mingw-tls-gcc-4.8.patch.
 - Fixes SJLJ exception issue
 - Adds TLS support
export GCC_PREFIX="/crossdev/gdc/install"
# Required for updated assembler and linker.
export PATH="$GCC_PREFIX/bin:$PATH"
../configure --prefix=$GCC_PREFIX --with-gmp=/crossdev/gdc/deps/gmp --with-mpfr=/crossdev/gdc/deps/mpfr \
--with-mpc=/crossdev/gdc/deps/mpc --with-cloog=/crossdev/gdc/deps/cloog/ --with-isl=/crossdev/gdc/deps/isl \
--disable-bootstrap --enable-languages=c,c++,d,lto --enable-sjlj-exceptions

Forgot GIT instructions.

For GDC, you can clone the Master branch. You'll have to manually specify which commit.

git clone https://github.com/D-Programming-GDC/GDC.git
git checkout 166e02c2e99c3f6926513bb617593f24b7f4456f
Apply patch mingw-gdc.patch

On Saturday, 30 March 2013 at 23:22:57 UTC, Daniel Green wrote:
> Forgot GIT instructions.
>
> For GDC, you can clone the Master branch. You'll have to manually specify which commit.
>
> git clone https://github.com/D-Programming-GDC/GDC.git
> git checkout 166e02c2e99c3f6926513bb617593f24b7f4456f
> Apply patch mingw-gdc.patch

Sweet work Daniel.


Regards
Iain

Which version of MinGW did you use for compilation? TDM/MinGW-w64 or something else?

I consider MinGW-builds (http://sourceforge.net/projects/mingwbuilds/) is the best MinGW pack.

On 04/03/2013 05:44 PM, Jack Applegame wrote:
> Which version of MinGW did you use for compilation? TDM/MinGW-w64 or something else?
> 
> I consider MinGW-builds (http://sourceforge.net/projects/mingwbuilds/)
> is the best MinGW pack.
> 
I used standard MinGW http://mingw.org for compilation.  It's GCC 4.7 and includes the MSYS environment required to build GCC.

When you say

> Download the following packages:
>
> binutils-2.23.1.tar.gz
> cloog-0.18.0.tar.gz
> gcc-4.8-20130303.tar.bz2
> gmp-4.3.2.tar.bz2
> isl-0.11.1.tar.bz2
> mingwrt-3.20-mingw32-src.tar.gz
> mpc-1.0.1.tar.gz
> mpfr-3.1.1.tar.bz2
> w32api-3.17-2-mingw32-src.tar.lzma

Where do I get those packages? I don't see them all in the MinGW
Installation Manager. Sorry, more of a linux guy and not familiar
with MinGW. Also, it would be super-helpful if these instructions
were in the README in the repository, as it took me a while to
find them here.

Am Mon, 28 Jul 2014 13:34:45 +0000
schrieb "scriptjunkie" <scriptjunkie@scriptjunkie.us>:

> When you say
> 
> > Download the following packages:
> >
> > binutils-2.23.1.tar.gz
> > cloog-0.18.0.tar.gz
> > gcc-4.8-20130303.tar.bz2
> > gmp-4.3.2.tar.bz2
> > isl-0.11.1.tar.bz2
> > mingwrt-3.20-mingw32-src.tar.gz
> > mpc-1.0.1.tar.gz
> > mpfr-3.1.1.tar.bz2
> > w32api-3.17-2-mingw32-src.tar.lzma
> 
> Where do I get those packages? I don't see them all in the MinGW Installation Manager. Sorry, more of a linux guy and not familiar with MinGW. Also, it would be super-helpful if these instructions were in the README in the repository, as it took me a while to find them here.

These are source packages, you'll have to get them from their official webpages (https://ftp.gnu.org/gnu/binutils/ , ...)

I think these build instructions used to be on the GDC wiki, but I think there's no up-to-date guide right now.

If you want to build on windows, this might help: https://github.com/venix1/MinGW-GDC

Otherwise I recommend using the binaries from dgnu.org/downloads or building with crosstool-NG:

Am Mon, 28 Jul 2014 19:02:48 +0200
schrieb Johannes Pfau <nospam@example.com>:

> Am Mon, 28 Jul 2014 13:34:45 +0000
> schrieb "scriptjunkie" <scriptjunkie@scriptjunkie.us>:
> 
> > When you say
> > 
> > > Download the following packages:
> > >
> > > binutils-2.23.1.tar.gz
> > > cloog-0.18.0.tar.gz
> > > gcc-4.8-20130303.tar.bz2
> > > gmp-4.3.2.tar.bz2
> > > isl-0.11.1.tar.bz2
> > > mingwrt-3.20-mingw32-src.tar.gz
> > > mpc-1.0.1.tar.gz
> > > mpfr-3.1.1.tar.bz2
> > > w32api-3.17-2-mingw32-src.tar.lzma
> > 
> > Where do I get those packages? I don't see them all in the MinGW Installation Manager. Sorry, more of a linux guy and not familiar with MinGW. Also, it would be super-helpful if these instructions were in the README in the repository, as it took me a while to find them here.
> 
> These are source packages, you'll have to get them from their official webpages (https://ftp.gnu.org/gnu/binutils/ , ...)
> 
> I think these build instructions used to be on the GDC wiki, but I think there's no up-to-date guide right now.
> 
> If you want to build on windows, this might help: https://github.com/venix1/MinGW-GDC
> 
> Otherwise I recommend using the binaries from dgnu.org/downloads or building with crosstool-NG:
> 

http://wiki.dlang.org/GDC/Cross_Compiler/crosstool-NG https://github.com/jpf91/gdc-build-configs/