RE: [Ltib] Calling Native toolchain as well as target toolchaininmakefile.

[Stuart Hughes]

Hi Marc,

I guess you're still having problems with this? I wasn't clear after
this morning's email.

If so you need to make sure that there is a '\' continuation after the
CC_FOR_BUILD="$BUILDCC" otherwise the assignment won't be seen by
configure, it should look something like this:

CC_FOR_BUILD="$BUILDCC" \
./configure --prefix=%{_prefix} --host=$CFGHOST --build=%{_build} 
make

make sure there is nothing expect a newline after the backslash, or
alternatively put it all on one line.

I wouldn't worry about the spoofing until you've tried this.  If you're
still having problems the easiest check is to put yourself into the ltib
build environment using './ltib -m shell' and then you can do gcc -v etc
to print out what's going on.  Also one more thing, if you do:
export FS_DEBUG=1 the spoofer will output the exact command line it is
using to invoke the cross compiler.

Regards, Stuart

On Tue, 2007-09-04 at 10:54 +0200, Marc Titinger wrote:
> Hi Stuart,
> 
> first, thanks a lot for your quick reply.
> 
> the original makefiles in libgpg-error do call $(CC_FOR_BUILD) for
> compiling the native tool, so at first, I tried to set CC_FOR_BUILD in
> the spec file as you recommended.
> 
> here is a snippet from the Makefile :
> 
> ---------------------------------------------------------------
> # It is correct to use $(CC_FOR_BUILD) here.  We want to run the
> # program at build time.
> mkerrcodes: mkerrcodes.c mkerrcodes.h Makefile
>         $(CC_FOR_BUILD) -I. -I$(srcdir) -o $@ $(srcdir)/mkerrcodes.c
> 
> code-from-errno.h: mkerrcodes Makefile
>         ./mkerrcodes | $(AWK) -f $(srcdir)/mkerrcodes2.awk >$@
> -------------------------------------------------------------------
> 
> 
> Here is my spec file (copied/modified from libglade) :
> 
> ------------------------------------------------------------------
> %define pfx /opt/freescale/rootfs/%{_target_cpu}
> 
> Summary         : The libglade library for loading user interfaces
> Name            : libgpg-error
> Version         : 1.5
> Release         : 1
> Vendor          : Freescale
> Packager        : Stuart Hughes
> Group           : System Environment/Libraries
> Source          : %{name}-%{version}.tar.bz2
> License         : LGPL
> BuildRoot       : %{_tmppath}/%{name}
> 
> %Description
> %{summary}
> 
> %Prep
> %setup
> 
> %Build
> CC_FOR_BUILD="$BUILDCC"
> ./configure --prefix=%{_prefix} --host=$CFGHOST --build=%{_build} 
> make
> 
> %Install
> rm -rf $RPM_BUILD_ROOT
> make install DESTDIR=$RPM_BUILD_ROOT/%{pfx}
> 
> %Clean
> rm -rf $RPM_BUILD_ROOT
> 
> %Files
> %defattr(-,root,root)
> %{pfx}/*
> ------------------------------------------------------------
> 
> Another thing makes me believe that I have some spoofing issue :
> 
> when I use a "mkerrcodes" pre-compiled for intel in the makefile, then
> "./ltib -p libgpg-error" completes, and the lib is properly installed
> in rootfs/usr/lib, and is an ARM binary. no problem so far.
> 
> But, when I compile a subsequent package (libgcrypt) that needs it,
> the spoofing seems not to work completely :
> 
> gcc
> -shared  .libs/libgcrypt_la-misc.o .libs/libgcrypt_la-global.o 
> .libs/libgcrypt_la-sexp.o .libs/libgcrypt_la-stdmem.o 
> .libs/libgcrypt_la-secmem.o .libs/libgcrypt_la-missing-string.o 
> .libs/libgcrypt_la-module.o .libs/libgcrypt_la-ath.o -Wl,--whole-archive 
> ../cipher/.libs/libcipher.a ../mpi/.libs/libmpi.a -Wl,--no-whole-archive  
> /usr/lib/libgpg-error.so -lnsl  -Wl,--version-script=./libgcrypt.vers 
> -Wl,-soname -Wl,libgcrypt.so.11 -o .libs/libgcrypt.so.11.2.3
> /usr/lib/libgpg-error.so: could not read symbols: File in wrong format
> 
> 
> all the compiled .o files are ARM but /usr/lib resolves to the native
> path, not the rootfs path I think.
> 
> How can I check where the standard include and lib path actually go
> during build time ?
> 
> Regards,
> 
> Marc.
> 
> 
> 
> 
> 
> 
> 
> 
> 
> -----Original Message-----
> From:   Stuart Hughes [mailto:address@hidden
> Sent:   Tue 9/4/2007 9:36 AM
> To:     Marc Titinger
> Cc:     address@hidden
> Subject:        Re: [Ltib] Calling Native toolchain as well as target
> toolchaininmakefile.
> 
> Hi Mark,
> 
> Using $BUILDCC is the right way to call up the host based compiler.
> However you'll need to look at the Makefiles for libgpg-error to see
> if
> it is cross compiler aware (e.g. has some provision for building some
> parts with one compiler and some another).  If it has, then use
> whatever
> it requires, often this is CC_FOR_BUILD="$BUILDCC" (note the quote but
> sometimes it's HOSTCC="$BUILDCC", it depends on the package.  If the
> package is not cross compiler aware then you'll need to make a patch
> so
> that it is.
> 
> One thing, normally Makefile.am should not need to be worried about as
> this only gets processed when you run 'automake' ?
> 
> Have you got a spec file you can send me for this package?  If you
> can't
> get it working easily let me know, maybe I can take a look.
> 
> Regards, Stuart
> 
> 
> On Mon, 2007-09-03 at 18:32 +0200, Marc Titinger wrote:
> > Hello,
> >
> > I'm trying to add the libgpg-error package to an iMX31 ltib distro
> > (based on the last Freescale ADS iso), and I need to call the host
> > (i586) gcc instead of the spoofed cross compiler at some point in
> the
> > Makefile.am.
> >
> > I've read some tips from thread so I tried :
> >
> > - setting CC_FOR_BUILD=$BUILDCC in the spec file : didn't work, the
> > binary was still compiled for the target instead of being intel
> code.
> >
> > - localy unspoofing the path : did'nt work either, so I'm missing
> > something, please help !
> >
> >
> > #--------export PATH=$(UNSPOOF_PATH)-----------
> > export
> >
> PATH=/home/mtr/ltib-imx31ads-20070511/bin:/opt/freescale/ltib/usr/bin:/opt/freescale/usr/local/gcc-4.1.1-glibc-2.4-nptl-6/arm-none-linux-gnueabi/bin:/usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/usr/X11R6/bin
> >
> > cc -I. -I. -o mkerrcodes ./mkerrcodes.c <--- still generates ARM
> > binary.
> >
> > #--------export PATH=$(SPOOF_PATH)----
> > export
> >
> PATH=/opt/freescale/ltib/usr/spoof:/home/mtr/ltib-imx31ads-20070511/bin:/opt/freescale/ltib/usr/bin:/opt/freescale/usr/local/gcc-4.1.1-glibc-2.4-nptl-6/arm-none-linux-gnueabi/bin:/usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/usr/X11R6/bin
> >
> >
> > _______________________________________________
> > LTIB home page: http://bitshrine.org
> >
> > Ltib mailing list
> > address@hidden
> > http://lists.nongnu.org/mailman/listinfo/ltib
> 
> 
> 
> 
> 
>