[U-Boot] [PATCH][RFC] Add native win32 mkimage support

[Peter Tyser]

On Fri, 2009-02-06 at 16:51 -0500, Mike Frysinger wrote:
> On Friday 06 February 2009 14:59:10 Peter Tyser wrote:
> > On Fri, 2009-02-06 at 20:06 +0100, Wolfgang Denk wrote:
> > > In message Peter Tyser wrote:
> > > > Add a mkimage_win32.exe build target which can produce a native
> > > > win32 mkimage executable using the MinGW toolchain.  The
> > > > mkimage_win32.exe binary is generated when the MINGW_COMPILE
> > > > environment variable is defined.  The mkimage_win32.exe binary
> > > > can be used by those who use Windows as an OS build environment
> > > > but don't use cygwin.
> > >
> > > Why do we need a new envrironment variable? Can we not follow the
> > > standard pattern ansd use CROSS_COMPILE instead?
> >
> > Most files can't be compiled with MinGW so if CROSS_COMPILE is set to a
> > MinGW compile errors quickly occur in the build process.  Also, it would
> > be a bigger pain to compile u-boot + mkimage_win32.exe.  Eg:
> >
> > export CROSS_COMPILE=powerpc-linux-
> > export MINGW_COMPILE=i586-mingw32msvc-
> > make
> >
> > vs
> >
> > export CROSS_COMPILE=i586-mingw32msvc-
> > make
> > cp tools/mkimage_win32.exe ~/
> > make clean
> > export CROSS_COMPILE=powerpc-linux-
> > make
> 
> i think you're trying too hard.  you're trying to combine three targets at 
> once: the host system (ppc), the build system (i686 prob), and canadian cross 
> for some other random build system (mingw).
> 
> the logical step would be to only build the tools for your random other build 
> system instead of trying to combine it all together.  in other words, set the 
> HOSTCC to your mingw compiler and only process the tools target.  this is how 
> every other package out there works and it doesnt really make sense to have u-
> boot be different in this regard.

But Windows isn't really the HOSTCC, its a cross-compile target.
Setting my HOSTCC to a cross compiler seems just as confusing as setting
up 2 cross-compile targets to me.  The process of building would also
still be slightly more complex to me:

export CROSS_COMPILE=powerpc-linux-
export MINGW_COMPILE=i586-mingw32msvc-
make

vs

export HOSTCC=i586-mingw32msvc-
make mkimage_win32
export HOSTCC=gcc
make

Best,
Peter