This is the mail archive of the cygwin mailing list for the Cygwin project.

Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: Cygwin on x64

On Fri, Mar 21, 2008 at 12:17:56PM -0400, NightStrike wrote:
>On 3/13/08, Dave Korn <> wrote:
>> NightStrike wrote on 13 March 2008 19:20:
>> > Is cygwin for Win64 native 64-bit, or does it run in the WoW
>> > compatibility layer?
>>  The latter.  There's no such thing as "cygwin for Win64"; the dll itself,
>> and all the packages, exist only in bog standard 32-bit ix86 versions.
>Now that there's a more or less working compiler for Win64, what's
>required to get at the very least the cygwin dll to compile?
>A very quick attempt with the current compiler yields this:
>cc -L/home/nightstrike/cyg/build/x86_64-pc-mingw32/winsup/mingw
>-isystem /home/nightstrike/cyg/cygwin-snapshot-20080318-1/winsup/mingw/include
>-isystem /home/nightstrike/cyg/cygwin-snapshot-20080318-1/winsup/w32api/include
>-c -DHAVE_CONFIG_H -g -O2   -I.
>-I../../../cygwin-snapshot-20080318-1/libiberty/../include  -W -Wall
>-Wwrite-strings -Wc++-compat -Wstrict-prototypes -pedantic
>../../../cygwin-snapshot-20080318-1/libiberty/regex.c -o regex.o
>In file included from ../../../cygwin-snapshot-20080318-1/libiberty/regex.c:196:
>In function 'isalnum':
>error: '_imp____mb_cur_max_dll' undeclared (first use in this

What are you asking?  Are you asking if making a true 64-bit version of
cygwin1.dll just requires building the dll with a 64-bit compiler?  If
so, then the answer is that it is not that simple.  There is quite a bit
more work involved than just recompiling.  32-bit assumptions would have
to be rethought throughout the cygwin and newlib sources.

It is not a small job.


Unsubscribe info:
Problem reports:

Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]