RE: Cross compiling libffi for powerpc32?

["Amit Margalit" <amit dot margalit at siverge dot com>]

Hi,

Thanks for the suggestion. For now, if I don't do this, what I get is a working compile, which - when installed to the target's staging directory – doesn't create these header file symlinks.

My next step after cross-compiling libffi was cross-compiling Python 2.5.2 for my platform, and since these headers were not symlinked, then Python's configure script failed to build ctypes library for my platform, until I manually created them, and re-ran the Python cross-compile procedure (a headache in its own right).

Thanks again,

Amit Margalit | SW Team Leader
Siverge Networks Ltd

5 Maskit st. Herzelia Pituah 46733 Israel
Tel:??? +972-9-9526612
Fax:????+972-9-9560993
Mobile: +972-52-6390012
Web:?? www.siverge.com
E-mail: Amit.Margalit@siverge.com

                                        
                               Leading Networking One Chip Forward
________________________________________
From: Peter van Eerten [mailto:turtle@dds.nl] 
Sent: ה 22 ינואר 2009 23:20
To: Amit Margalit
Cc: Anthony Green; libffi-discuss@sourceware.org
Subject: Re: Cross compiling libffi for powerpc32?

Hi Amit,

For the header files issue - symlinking may be somewhat clumsy, however, the configure script checks the environment variable CPPFLAGS for header files also. So this maybe a cleaner solution. Example:

export CPPFLAGS=-I/usr/lib/gcc/i486-slackware-linux/3.4.6/include/libffi

Of course the location of the header files may be different on other systems, then change the export accordingly. After that, run './configure', it should detect the FFI header files now.

Regards
Peter
Amit Margalit wrote: 
Hi,

Yes - I was finally able to compile it. Here is what I used:

./configure --prefix=/store/users/lab/Ltib-mpc8548cds-20071214/rootfs/usr/ --target=powerpc-linux-gnuspe --host=powerpc-linux-gnuspe --build=i686-pc-linux-gnu

Also, after the configure, something was wrong with the header files, so I had to manually make symbolic links of ffitarget.h and ffi.h to /usr/include on target rootfs.

And, the question I asked - whether powerpc32 is supported turned out to be answerable with a yes.

It's just that the documentation keeps referring to powerpc64, and fails to mention that the code for powerpc64 is actually 32/64 capable and I think it is selecting the correct mode in compile-time.

Amit

Amit Margalit | SW Team Leader
Siverge Networks Ltd

5 Maskit st. Herzelia Pituah 46733 Israel
Tel:    +972-9-9526612
Fax:    +972-9-9560993
Mobile: +972-52-6390012
Web:   www.siverge.com
E-mail: Amit.Margalit@siverge.com
                                        
                               Leading Networking One Chip Forward
  
-----Original Message-----
From: Anthony Green [mailto:green@redhat.com]
Sent: ה 22 ינואר 2009 16:12
To: Amit Margalit
Cc: libffi-discuss@sourceware.org
Subject: Re: Cross compiling libffi for powerpc32?

Amit Margalit wrote:
    
Hello,

I am trying to cross-compile libffi-3.0.8, and meeting strong resistance ;-)

My target is powerpc-unknown-linux-gnuspe. It is a MPC8543_E, with Embedded Linux (used Ltib from
      
Freescale to generate it).
    
Some questions:
1. Is powerpc32 supported?
2. How should I configure to cross-compile?

Here's my configure line:
./configure --prefix=/store/users/lab/Ltib-mpc8548cds-20071214/rootfs/usr/ --target=powerpc-
      
linux-gnuspe --host=i686-pc-linux-gnu

Did you try:

"--host=powerpc-linux-gnuspe" instead of "--target=powerpc-linux-gnuspe
--host=i686-pc-linux-gnu"?

For GNU libraries, "host" is actually supposed to refer to the system
that will host the resulting binary.  So, for instance, host==target
when building target libraries in the GNU toolchain.

AG



    
My environment is set this way:
setenv LD powerpc-linux-gnuspe-ld
setenv NM powerpc-linux-gnuspe-nm
setenv AR powerpc-linux-gnuspe-ar
setenv AS powerpc-linux-gnuspe-as
setenv CC powerpc-linux-gnuspe-gcc
setenv CPP powerpc-linux-gnuspe-cpp
setenv CXX powerpc-linux-gnuspe-g++
setenv HOST powerpc-linux-gnuspe
setenv STRIP powerpc-linux-gnuspe-strip
setenv RANLIB powerpc-linux-gnuspe-ranlib
setenv OBJCOPY powerpc-linux-gnuspe-objcopy

setenv OPT -Os
setenv LDFLAGS -fPIC
setenv CROSS_COMPILE yes
setenv PATH ${PATH}:/opt/freescale/usr/local/gcc-4.1.78-eglibc-2.5.78-dp-1/powerpc-linux-
      
gnuspe/bin
    
setenv ARCH powerpc

Any help would be appreciated.

Thanks,

Amit Margalit | SW Team Leader
Siverge Networks Ltd

5 Maskit st. Herzelia Pituah 46733 Israel
Tel:    +972-9-9526612
Fax:    +972-9-9560993
Mobile: +972-52-6390012
Web:   www.siverge.com
E-mail: Amit.Margalit@siverge.com

                               Leading Networking One Chip Forward

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