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Re: cannot build bzr tip on mingw

From: Ken Brown
Subject: Re: cannot build bzr tip on mingw
Date: Mon, 02 May 2011 22:47:32 -0400
User-agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv: Gecko/20110303 Thunderbird/3.1.9

On 5/2/2011 6:21 PM, Sam Steingold wrote:
* Ken Brown<address@hidden>  [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<address@hidden>   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.

Sorry I can't be of more help.

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