GCC compiler -m64 option in cygwin

GCC compiler -m64 option in cygwin

[anik pal]

Hello,

IÂ’m quite new in cygwin environment. I have c source
code of a product which I build in solaris environment
with  gcc compiler –m64 option to create 64 bit
executable in solaris 9 environment. 

Now IÂ’ve to do the same task for win environment,
because the library available for my client is in
windows environment and the library is 64 bit. I
attempt to use cygwin for this job. Now my question
are as follows

 

1 . using cygwin gcc compiler can I link my source
code building with the win environment lib? 
2. is gcc 64 bit option available in cygwin? 
Regards

 

 

Anik Pal

Vadodara, India



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Re: GCC compiler -m64 option in cygwin

[Tim Prince]

anik pal wrote:
> I have c source
> code of a product which I build in solaris environment
> with  gcc compiler –m64 option to create 64 bit
> executable in solaris 9 environment. 
>
> Now IÂ’ve to do the same task for win environment,
> because the library available for my client is in
> windows environment and the library is 64 bit. I
> attempt to use cygwin for this job. Now my question
> are as follows
>
>  
>
> 1 . using cygwin gcc compiler can I link my source
> code building with the win environment lib? 
> 2. is gcc 64 bit option available in cygwin? 
>
>   
No, there is no 64-bit native support in cygwin. Even on linux, a 
cross-gcc is needed to create 64-bit build on a 32-bit system, and none 
of the required libraries or utilities are generally available as a 
normal installation option. Of course, you can use cygwin as a build 
environment when running non-cygwin 64-bit compilers.
A preliminary 64-bit mingw compiler has appeared, but it seems to have 
difficulties linking with pre-existing libraries.

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Re: GCC compiler -m64 option in cygwin

[Samuel Thibault]

Hi,

Tim Prince, le Wed 31 Oct 2007 05:35:45 -0700, a écrit :
> No, there is no 64-bit native support in cygwin. Even on linux, a 
> cross-gcc is needed to create 64-bit build on a 32-bit system,

Nope, gcc now has multi-lib support.

> and none of the required libraries or utilities are generally         
> available as a normal installation option.

Depends on the distribution. In debian, libc6-amd64 and amd64-libs
provide a lot of them.

Samuel

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RE: GCC compiler -m64 option in cygwin

[Dave Korn]

On 31 October 2007 12:41, Samuel Thibault wrote:

> Hi,
> 
> Tim Prince, le Wed 31 Oct 2007 05:35:45 -0700, a écrit :
>> No, there is no 64-bit native support in cygwin. Even on linux, a
>> cross-gcc is needed to create 64-bit build on a 32-bit system,
> 
> Nope, gcc now has multi-lib support.

  ITYM biarch.

    cheers,
      DaveK
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Re: GCC compiler -m64 option in cygwin

[Samuel Thibault]

Dave Korn, le Wed 31 Oct 2007 12:52:18 -0000, a écrit :
> On 31 October 2007 12:41, Samuel Thibault wrote:
> > Tim Prince, le Wed 31 Oct 2007 05:35:45 -0700, a écrit :
> >> No, there is no 64-bit native support in cygwin. Even on linux, a
> >> cross-gcc is needed to create 64-bit build on a 32-bit system,
> > 
> > Nope, gcc now has multi-lib support.
> 
>   ITYM biarch.

If you prefer, yes (the configure option is called
--enable/disable-multilib).

Samuel

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RE: GCC compiler -m64 option in cygwin

[Dave Korn]

On 31 October 2007 13:19, Samuel Thibault wrote:

> Dave Korn, le Wed 31 Oct 2007 12:52:18 -0000, a écrit :
>> On 31 October 2007 12:41, Samuel Thibault wrote:
>>> Tim Prince, le Wed 31 Oct 2007 05:35:45 -0700, a écrit :
>>>> No, there is no 64-bit native support in cygwin. Even on linux, a
>>>> cross-gcc is needed to create 64-bit build on a 32-bit system,
>>> 
>>> Nope, gcc now has multi-lib support.
>> 
>>   ITYM biarch.
> 
> If you prefer, yes (the configure option is called
> --enable/disable-multilib).

  Uh, no, that configures multilibbing, you're conflating two separate things
here; it's worth getting the terminology right.  Biarch is a property of the
backend, which can generate 32/64 bit code regardless of whether or not you
have the right libgcc versions available or not.  Multilib is a feature that
is used to support and complete the operation of biarch, the two work
together, but it's an independent and orthogonal feature, used also by many
non-biarch architectures.

    cheers,
      DaveK
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Re: GCC compiler -m64 option in cygwin

[rajeevs]

Hi There,

please go through the followings for the problem:

1)      I want to create a 64 bit DLL using Cygwin in Windows Serever 2003
64 bit platform.
2)      I am using Cygwin to run the make file
3)      In the make file I have a macro “CFLAGS” where gave the option
“-m64” in the make file for 64 bit build 
4)      But when I use this option I am getting an error like:

$ make -f makefile_64
g++ -c -DWIN64 -D"__int64=long long" -trigraphs -I../include
-IC:/Progra~1/Java/jdk1.5.0_10/include
-IC:/Progra~1/Java/jdk1.5.0_10/include/win32 -mno-cygwin -m64 Abc.C -o Abc.o
Abc.C:1: sorry, unimplemented: 64-bit mode not compiled in
make: *** [Abc.o] Error 1

5)      The main thing is that I don’t know exactly what should be the
option we have to give under cygwin for building a 64 bit DLL (though I have
used “-m64” option), but  in Linux if you use this option, you’ll get the 64
bit .SO file!!!

i tried alot but tillnow didn't get the solution.

Please suggest me some alternative options if anybody have.

Thanks in advance!
Rajeev
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Re: GCC compiler -m64 option in cygwin

[rajeevs]

Hi There,

please go through the followings for the problem:

1)      I want to create a 64 bit DLL using Cygwin in Windows Serever 2003
64 bit platform.
2)      I am using Cygwin to run the make file
3)      In the make file I have a macro “CFLAGS” where gave the option
“-m64” in the make file for 64 bit build 
4)      But when I use this option I am getting an error like:

$ make -f makefile_64
g++ -c -DWIN64 -D"__int64=long long" -trigraphs -I../include
-IC:/Progra~1/Java/jdk1.5.0_10/include
-IC:/Progra~1/Java/jdk1.5.0_10/include/win32 -mno-cygwin -m64 Abc.C -o Abc.o
Abc.C:1: sorry, unimplemented: 64-bit mode not compiled in
make: *** [Abc.o] Error 1

5)      The main thing is that I don’t know exactly what should be the
option we have to give under cygwin for building a 64 bit DLL (though I have
used “-m64” option), but  in Linux if you use this option, you’ll get the 64
bit .SO file!!!

i tried alot but tillnow didn't get the solution.

Please suggest me some alternative options if anybody have.

Thanks in advance!
Rajeev
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Re: GCC compiler -m64 option in cygwin

[Reini Urban]

2009/2/5 rajeevs:
> please go through the followings for the problem:
>
> 1)      I want to create a 64 bit DLL using Cygwin in Windows Serever 2003
> 64 bit platform.
> 2)      I am using Cygwin to run the make file
> 3)      In the make file I have a macro "CFLAGS" where gave the option
> "-m64" in the make file for 64 bit build
> 4)      But when I use this option I am getting an error like:
>
> $ make -f makefile_64
> g++ -c -DWIN64 -D"__int64=long long" -trigraphs -I../include
> -IC:/Progra~1/Java/jdk1.5.0_10/include
> -IC:/Progra~1/Java/jdk1.5.0_10/include/win32 -mno-cygwin -m64 Abc.C -o Abc.o
> Abc.C:1: sorry, unimplemented: 64-bit mode not compiled in
> make: *** [Abc.o] Error 1

What exactly do you not understand in the error message
  "sorry, unimplemented: 64-bit mode not compiled in"
Did you read the README which comes with the gcc package?

You are using:  -mno-cygwin -m64
Why do you ask mingw questions here at cygwin?
Please hurry over to mingw-users.

> 5)      The main thing is that I don't know exactly what should be the
> option we have to give under cygwin for building a 64 bit DLL (though I have
> used "-m64" option), but  in Linux if you use this option, you'll get the 64
> bit .SO file!!!

This is a different architecture with 64bit support.

> i tried alot but tillnow didn't get the solution.
> Please suggest me some alternative options if anybody have.

Google would have been your friend. That is a fantastic and completely
new way to find information by yourself, without the need to wait for
answers from mailing lists.
There's a unsupported and problematic/incompatible mingw build:
http://www.tdragon.net/recentgcc/ for 4.3
and
http://mingw-w64.sourceforge.net/ for win64
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