Re: cannot build bzr tip on mingw

[Ken Brown <kbrown@cornell.edu>]

On 5/2/2011 10:47 PM, Ken Brown wrote:
> On 5/2/2011 6:21 PM, Sam Steingold wrote:
>>> * Ken Brown<xoebja@pbearyy.rqh>   [2011-05-02 18:08:55 -0400]:
>>>
>>> On 5/2/2011 5:13 PM, Sam Steingold wrote:
>>>> On Mon, May 2, 2011 at 4:31 PM, Eli Zaretskii<eliz@gnu.org>    wrote:
>>>>> But yes, you can use GCC 4, modulo the caveats in etc/PROBLEMS.
>>>> how, given that it no longer supports -mno-cygwin?
>>>
>>> The -mno-cygwin option is being phased out in favor of a genuine
>>> cygwin-mingw cross compiler.
>>
>> I have seen this phrase, but I don't know what a "genuine cross compiler" is.
>>
>> Specifically, what is the magic incantation which I should use instead
>> of "gcc -mno-cygwin" at the command line to produce a non-cygwin (pure
>> native woe32/64) executable?
>>
>> Next, what is the magic incantation which I should use instead of
>> ./configure.bat --no-debug --with-gcc --cflags -IC:/gnu/gnuwin32/include --ldflags -LC:/gnu/gnuwin32/lib --without-xpm
>> to configure emacs to use this "genuine cross compiler"?
>>
>> Penultimately, DIUC that with an autoconf-generated configure script the
>> right way to configure a package to be cross-built is
>> ./configure --build arch-vendor-os
>>
>> Finally, will this produce a valid windows (XP 64-bit) emacs on linux:
>> ./configure --build x86_64-w64-mingw32
>
> I'm sorry, but I really don't anything about cross compilers.  I was
> simply passing on the information that (in principle) it should be
> possible to use the new cross compiler instead of 'gcc -mno-cygwin' to
> produce a native windows executable.  Others on the list (Angelo?) might
> be able to give you details.
>
> I can tell you that the cross compiler (for 32-bit windows) is called
> i686-pc-mingw32-gcc.exe and is in the Cygwin package mingw-gcc-core,
> which can be installed by following the instructions in the link I sent
> you.  There's is also a cross compiler for 64-bit windows, which has
> been available for some time now, in the package mingw64-x86_64-gcc-core.

I just played around with the cross compiler a little.  It appears that 
you can simply use "i686-pc-mingw32-gcc" as a replacement for "gcc 
-mno-cygwin".  At least it worked for me on a simple C program.