One other warning: cross building from Alphas (and to Alpha) is known
to have problems on some architectures because of gcc bugs.

Perry

"Perry E. Metzger" <perry@wasabisystems.com> writes:

> You should be using the in-tree tools for doing cross compilation,
> not the pkgsrc tools. If you download 1.6 or -current sources, you
> will notice that there is a file called BUILDING at the top level,
> and a script that it describes called build.sh which is designed
> for cross building of the entire system.
> 
> Perry
> 
> Peter B <pb@ludd.luth.se> writes:
> 
> >     Hi!
> > 
> > I'm trying to crosscompile i386 netbsd ELF current kernel on a:
> > NetBSD speedy 1.5_BETA NetBSD 1.5_BETA (SPEEDY) #6: Sun Dec  6 17:15:55 CET 2020
> > (an 500 MHz alpha machine)
> > 
> > I downloaded the kernel source from:
> >   ftp.netbsd.org:/pub/NetBSD/NetBSD-current/tar_files/src/sys.tar.gz
> > 
> > And the crosscompile tools:
> >   cross-i386-netbsdelf-1.3.0.0.tgz (for 1.5/alpha)
> > 
> > Using:
> > /usr/sbin/config GENERIC
> > cd ../compile/GENERIC
> > ./build-script depend
> > 
> > But it won't compile..:
> > *Initialization*:1: warning: this is the location of the previous definition
> > *Initialization*:1: warning: `__GNUC__' redefined
> > *Initialization*:1: warning: this is the location of the previous definition
> > rm -f param.c
> > cp ../../../../conf/param.c .
> > cat ../../../../arch/i386/i386/genassym.cf  |  sh ../../../../kern/genassym.sh /home/tmp/pb/nbsd_i386/cross-i386-netbsdelf-1.3.0.0/bin/i386-netbsdelf-gcc -D__NetBSD__ -ffreestanding  -O2 -Werror -Wall -Wno-main -Wpointer-arith -Wmissing-prototypes -Wstrict-prototypes -Wno-uninitialized  -Di386 -I.  -I../../../../arch -I../../../.. -nostdinc -DLKM -DDIAGNOSTIC -DMAXUSERS=32 -D_KERNEL -D_KERNEL_OPT   > assym.h.tmp &&  mv -f assym.h.tmp assym.h
> > *Initialization*:1: warning: `__GNUC__' redefined
> > *Initialization*:1: warning: this is the location of the previous definition
> > *** Error code 1
> > 
> > Stop.
> > Exit 1
> > 
> > Any hints on how to fix it?
> > I tried the same with 1.5/i386/elf kernel without sucess and more errors.
> > (My intention is to create custom kernels for a much slower machine..)
> > 
> >     /Peter
> > 
> > Btw, I'm not subscribed to this list.
> > 
> > 
> > ........................... build-script ...........................
> > #!/bin/sh
> > 
> > # just helping for cross compilation.
> > 
> > # http://www.netbsd.org/Documentation/cross/#host-system
> > # http://www.netbsd.org/Ports/
> > # cross-i386-netbsdelf-1.3.0.0.tgz
> > # syssrc.tgz
> > 
> > # Like m68k
> > MACHINE=i386
> > # Like amiga, atari etc..
> > MACHINE_ARCH=i386
> > 
> > WHICH=i386-netbsdelf
> > LOCAL=/home/tmp/pb/nbsd_i386
> > BINDIR=$LOCAL/cross-i386-netbsdelf-1.3.0.0/i386-netbsdelf/bin
> > PATH=$PATH:$BINDIR:$LOCAL/cross-i386-netbsdelf-1.3.0.0/i386-netbsdelf/bin:$PATH:
> > $LOCAL export PATH
> > 
> > GCC_EXEC_PREFIX=$WHICH
> > 
> > MKPROFILE=no export MKPROFILE
> > MKLINT=no export MKLINT
> > HOSTED_CC=cc export HOSTED_CC
> > MAKE=make export MAKE
> > set -x
> > 
> > # just in case you forgot to specify this when you built gcc...
> > CFLAGS="-D__NetBSD__"
> > export MACHINE MACHINE_ARCH CFLAGS
> > #TARGET=/usr/pkg/cross/bin/sh-netbsdcoff
> > TARGET=/home/tmp/pb/nbsd_i386/cross-i386-netbsdelf-1.3.0.0/bin/i386-netbsdelf
> > 
> > CPP=`$TARGET-gcc -print-prog-name=cpp`
> > echo "ARGS:"$*
> > make AR=$TARGET-ar AS=$TARGET-as CC=$TARGET-gcc LD=$TARGET-ld NM=$TARGET-nm \
> >                RANLIB=$TARGET-ranlib SIZE=$TARGET-size \
> >                STRIP=$TARGET-strip OBJCOPY=$TARGET-objcopy \
> >                CXX=$TARGET-c++ CPP=$CPP \
> >                FC=$TARGET-f77 ADDR2LINE=$TARGET-addr2line OBJDUMP=$TARGET-objdum
> > p STRINGS=$TARGET-strings \
> >                $*
> > ........................... build-script ...........................
> > 
> > 
> 
> --
> Perry E. Metzger		perry@wasabisystems.com
> --
> NetBSD: The right OS for your embedded design. http://www.wasabisystems.com/
> 

--
Perry E. Metzger		perry@wasabisystems.com
--
NetBSD: The right OS for your embedded design. http://www.wasabisystems.com/