Re: Building on MinGW using MXE-built dependencies [WAS: Re: mxe-installer try 2]

[Philip Nienhuis]

John W. Eaton wrote:
> On 06/11/2013 03:43 PM, Philip Nienhuis wrote:
> > John W. Eaton wrote:
> > > On 06/11/2013 02:51 PM, Philip Nienhuis wrote:
> > >
> > > > Here I didn't even get as far as you did. I installed mingw + above
> > > > dependencies, updated/upgraded, cloned mxe-octave.
> > > > The mxe build breaks while building gcc.
> > >
> > > That's not currently expected to work. I've not been able to get gcc to
> > > build for any native build setup. So you need to try with USE_SYSTEM_GCC
> > > set to yes.
> >
> > Stupid me, I could have seen that myself, didn't think of reading that
> > far into Makefile. Sorry.
> >
> > Anyway, I changed USE_SYSTEM_GCC to "yes" but now ./mk-dist insists on
> > building gcc. How can I avoid that?
> >
> > Philip
>
> Are you sure it is actually building GCC? It will still unpack and run
> the build target, but if you look at gcc.mk, you'll see that when
> USE_SYSTEM_GCC is set to yes, it will only create a cmake configuration
> file, not actually build the compiler.

Hmmm, so the message "[build]    gcc" (and the long period of hard disk 
activity) is a bit deceptive....

But I saw you are correct, it started building blas and now lapack.

> Fixing the Makefile to avoid
> unpacking the gcc tar file when it won't be used is on my list but I
> haven't done it yet.

I fear that list is long :-)

On my list is finding out how to build using mxe-octave on Windows 7 
64-bit, as that runs on my fastest dev box (the build I referred to runs 
on an older Core Duo desktop).
I consistently get configure messages that "gcc cannot build 
executables", with the log mentioning that ld cannot find a.o., 
-ladvapi32. Now, advapi32.dll and friends are in the C:\Windows\system32 
dir which *is* in the MinGW PATH as /c/windows/system32. I've 
experimented with LDFLAGS and other tricks to no avail :-)  Google 
didn't turn up a solution yet.
I think this is a very MinGW-specific issue.

Thanks,

Philip