[vbox-dev] Building VirtualBox for windows amd64

[vbox]

Hi

I have been struggling a week on and off to build VirtualBox OSE for
amd64/Windows. I have fixed configure.vbs so it handles libxml2, libxslt
and qt4. For gcc compiling I have used the mingw_x86_64 build invironment
that provides a toolchain that targets x86_64-pc-mingw32. This actually
seems to work fine all the way to the recompiler subdir.
I can see the toolchain used by VirtualBox developers to build the
amd64/windows version is called x86_64-unknown-linux-gnu-<tool>.exe. And is
a gcc version 3.4.6. I have been trying to build this exact version and
target all weekend but with no luck (I can build binutils and half of gcc,
then it fails).

VirtualBox developers: Please, could you be so kind as to expose the
x86_64-unknown-linux-gnu toolchain you are using, that would really ease
the build process. An idea could be to add it to the svn repository under
the tools directory - it would still be nessecary to download the mingw
environment besides.

Here is where my virtualbox build ends:

kBuild: Installing VBoxREM =>
C:/dev/vbox/out/win.amd64/release/bin/VBoxREM.dll
kBuild: Pass - Programs
kBuild: Compiling VBoxREM2 - C:/dev/vbox/src/recompiler/VBoxRecompiler.c
In file included from C:/dev/vbox/src/recompiler/VBoxRecompiler.c:28:
C:/dev/vbox/src/recompiler/exec-all.h: In function 'tb_add_jump':
C:/dev/vbox/src/recompiler/exec-all.h:308: warning: cast from pointer to
integer of different size
C:/dev/vbox/src/recompiler/exec-all.h:312: warning: cast from pointer to
integer of different size
C:/dev/vbox/src/recompiler/exec-all.h:312: warning: cast to pointer from
integer of different size
   .
   .
   .
C:/dev/vbox/src/recompiler/target-i386/ops_sse.h: In function
'op_punpckhwd_xmm':
C:/dev/vbox/src/recompiler/target-i386/ops_sse.h:1400: warning: cast from
pointer to integer of different size
C:/dev/vbox/src/recompiler/target-i386/ops_sse.h:1400: warning: cast from
pointer to integer of different size
C:/dev/vbox/src/recompiler/target-i386/ops_sse.h: In function
'op_punpckhdq_xmm':
C:/dev/vbox/src/recompiler/target-i386/ops_sse.h:1400: warning: cast from
pointer to integer of different size
C:/dev/vbox/src/recompiler/target-i386/ops_sse.h:1400: warning: cast from
pointer to integer of different size
C:/dev/vbox/src/recompiler/target-i386/ops_sse.h: In function
'op_punpckhqdq_xmm':
C:/dev/vbox/src/recompiler/target-i386/ops_sse.h:1400: warning: cast from
pointer to integer of different size
C:/dev/vbox/src/recompiler/target-i386/ops_sse.h:1400: warning: cast from
pointer to integer of different size
kBuild: dyngen VBoxREM -
C:/dev/vbox/out/win.amd64/release/obj/VBoxREM2/target-i386/op.o
dyngen: bad ELF header
kmk: *** [C:/dev/vbox/out/win.amd64/release/obj/VBoxREM2/op.h] Error 1
kmk: *** Deleting file
`C:/dev/vbox/out/win.amd64/release/obj/VBoxREM2/op.h'

The command that fails:
@C:/dev/mingw_x86_64_20080724/bin/gcc.exe -c -g -O2 -nostdinc
-fno-strict-aliasing -fno-math-errno -Wall -O2 -fno-strict-aliasing -m64
-mcmodel=medium -fno-common -O2 -IC:/dev/vbox/src/recompiler/Sun
-IC:/dev/vbox/src/recompiler/Sun/crt
-IC:/dev/vbox/src/recompiler/target-i386 -IC:/dev/vbox/src/recompiler/fpu
-IC:/dev/vbox/out/win.amd64/release/obj/VBoxREM2 -IC:/dev/vbox/src/VBox/VMM
-IC:/dev/vbox/src/recompiler -IC:/dev/vbox/include/iprt/nocrt
-IC:/dev/vbox/include -IC:/dev/vbox/out/win.amd64/release -DVBOX -DVBOX_OSE
-DVBOX_WITH_64_BITS_GUESTS -DVBOX_WITH_INTERNAL_NETWORKING -DRT_OS_WINDOWS
-D__WIN__ -DRT_ARCH_AMD64 -D__AMD64__ -D__WIN64__ -DIN_RING3 -DIPRT_NO_CRT
-DHC_ARCH_BITS=64 -DGC_ARCH_BITS=64 -DIN_REM_R3 -DREM_INCLUDE_CPU_H
-DREM_PHYS_ADDR_IN_TLB -DLOG_USE_C99 -DHC_ARCH_BITS=64 -DGC_ARCH_BITS=64
-Wp,-MD,C:/dev/vbox/out/win.amd64/release/obj/VBoxREM2/VBoxRecompiler.o.dep
-Wp,-MT,C:/dev/vbox/out/win.amd64/release/obj/VBoxREM2/VBoxRecompiler.o
-Wp,-MP -o C:/dev/vbox/out/win.amd64/release/obj/VBoxREM2/VBoxRecompiler.o


The gcc toolchain I'm using targets x86_64-pc-mingw32 which is probably
part of the problem since it seems like dyngen expects ELF, also it is gcc
4.4.0 and I can see in a comment at the top of the Makefile inside the
recompiler directory that versions >4 are not supported:

C:\dev\vbox\src\recompiler>C:/dev/mingw_x86_64_20080724/bin/gcc.exe -v
Using built-in specs.
Target: x86_64-pc-mingw32
Configured with: ../gcc/configure --prefix=/var/tmp/win64
--with-sysroot=/var/tmp/win64 --target=x86_64-pc-mingw32 --host=x86_64-p
c-mingw32 -q --silent
Thread model: win32
gcc version 4.4.0 20080724 (experimental) (GCC)

Best regards
Jakob Simon-Gaarde