[oe] cross-compiling for x86_64

Patrick Ohly Patrick.Ohly at gmx.de
Sat Nov 11 19:24:37 UTC 2006 

On Di, 2006-11-07 at 23:00 +0100, Patrick Ohly wrote:
> I tried to build a cross-compilation SDK on a 32 bit Debian stable host
> with x86_64 as target. My idea is to regularly test 64 compilation of a
> project that I work on.

[...]

> Is this something that someone has done already and perhaps can share a
> local.conf for?

Apparently not, so let me describe in more detail what I am doing and
how it fails - perhaps then someone can give me a hint about how to fix
it. To be specific, something that I don't understand is why glibc is
built multiple times and why gcc-cross depends on it. Is there a
circular dependency between gcc and glibc that OE is trying to break
this way?

Here's a summary of the problems I had:
      * glibc-initial-2.3.2+cvs20040726-r22: generic bits/wordsize.h and
        bits/endian.h is used instead of the x86_64 ones
      * glibc-intermediate-2.5-r2: asm-x86_64 header files not found
      * glibc-intermediate-2.5-r2: config-name.h not created by
        configure although it is needed
      * glibc-intermediate-2.5-r2: #error "__NR_pread and __NR_pread64
        both defined???"

My setup:
OpenEmbedded: dev branch, pull/update today, revision e2fde1c5cf87c2b0a9be2dfac2a1a1937db68382
Bitbake: 1.6 branch, revision 638
local configs: conf/local.conf and conf/machine/x86_64.conf

x86_64.conf was derived from x86.conf with just some minor changes:
TARGET_ARCH = "x86_64", no IPKG_EXTRA_ARCHS. It is used by local.conf as
MACHINE together with DISTRO = "generic".

Bitbake tried to compile glibc-initial-2.3.2+cvs20040726-r22. The
configure task fails, with the final error being:
[...]
make[1]: Leaving directory `/home/patrick/x86_64/tmp/work/x86_64-linux/glibc-initial-2.3.2+cvs20040726-r22/libc'
make[1]: Entering directory `/home/patrick/x86_64/tmp/work/x86_64-linux/glibc-initial-2.3.2+cvs20040726-r22/libc'
{ echo '#include "posix/bits/posix1_lim.h"';            \
  echo '#define _LIBC 1';                                       \
  echo '#include "misc/sys/uio.h"'; } |                 \
ccache gcc  -E -dM -MD -MP -MF /home/patrick/x86_64/tmp/work/x86_64-linux/glibc-initial-2.3.2+cvs20040726-r22/build-x86_64-linux/bits/stdio_lim.dT -MT '/home/patrick/x86_64/tmp/work/x86_64-linux/glibc-initial-2.3.2+cvs20040726-r22/build-x86_64-linux/bits/stdio_lim.h /home/patrick/x86_64/tmp/work/x86_64-linux/glibc-initial-2.3.2+cvs20040726-r22/build-x86_64-linux/bits/stdio_lim.d'    \
      -Iinclude -I. -I/home/patrick/x86_64/tmp/work/x86_64-linux/glibc-initial-2.3.2+cvs20040726-r22/build-x86_64-linux  -Ilibio  -I/home/patrick/x86_64/tmp/work/x86_64-linux/glibc-initial-2.3.2+cvs20040726-r22/build-x86_64-linux -Isysdeps/x86_64/elf -Isysdeps/unix/sysv/linux/x86_64 -Isysdeps/unix/sysv/linux/wordsize-64 -Isysdeps/unix/sysv/linux -Isysdeps/gnu -Isysdeps/unix/common -Isysdeps/unix/mman -Isysdeps/unix/inet -Isysdeps/unix/sysv -Isysdeps/unix/x86_64 -Isysdeps/unix -Isysdeps/posix -Isysdeps/x86_64/fpu -Isysdeps/x86_64 -Isysdeps/wordsize-64 -Isysdeps/ieee754/ldbl-96 -Isysdeps/ieee754/dbl-64 -Isysdeps/ieee754/flt-32 -Isysdeps/ieee754 -Isysdeps/generic/elf -Isysdeps/generic -nostdinc -isystem /usr/lib/gcc-lib/i486-linux/3.3.5/include -isystem /home/patrick/x86_64/tmp/cross/x86_64-linux/include -xc - -o /home/patrick/x86_64/tmp/work/x86_64-linux/glibc-initial-2.3.2+cvs20040726-r22/build-x86_64-linux/bits/stdio_lim.hT
In file included from bits/types.h:28,
                 from posix/sys/types.h:31,
                 from include/sys/types.h:1,
                 from misc/sys/uio.h:24,
                 from <stdin>:3:
bits/wordsize.h:1:2: #error "This file must be written based on the data type sizes of the target"
In file included from posix/sys/types.h:31,
                 from include/sys/types.h:1,
                 from misc/sys/uio.h:24,
                 from <stdin>:3:
bits/types.h:127:3: #error 
In file included from string/endian.h:37,
                 from include/endian.h:1,
                 from posix/sys/types.h:213,
                 from include/sys/types.h:1,
                 from misc/sys/uio.h:24,
                 from <stdin>:3:
bits/endian.h:13:2: #error Machine byte order unknown.
make[1]: *** [/home/patrick/x86_64/tmp/work/x86_64-linux/glibc-initial-2.3.2+cvs20040726-r22/build-x86_64-linux/bits/stdio_lim.st] Error 1
make[1]: Leaving directory `/home/patrick/x86_64/tmp/work/x86_64-linux/glibc-initial-2.3.2+cvs20040726-r22/libc'
make: *** [sysdeps/gnu/errlist.c] Error 2

The configure completed, it is the GLIBC_2.3 hack with "make
sysdeps/gnu/errlist.c" which fails here. The problem comes from the fact
that -I. comes before -Isysdeps/x86_64. I have no idea where that
command line is assembled, so I went for another hack: removing the
"wrong" bits/wordsize.h and bits/endian.h.

That got me a step further to compiling glibc-intermediate-2.5-r2. Here
the problem is that it cannot find various asm-x86_64 header files like
asm-x86_64/param.h. Here's an example:

| gawk -f ../scripts/gen-as-const.awk ../nptl/sysdeps/x86_64/tcb-offsets.sym \
| | ccache x86_64-linux-gcc -S -o /home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/build-x86_64-linux/tcb-offsets.hT3 -std=gnu99 -O2 -Wall -Winline -Wwrite-strings -fexpensive-optimizations -fmerge-all-constants -frename-registers -Wstrict-prototypes      -I../include -I/home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/build-x86_64-linux/csu -I/home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/build-x86_64-linux -I../sysdeps/x86_64/elf -I../nptl/sysdeps/unix/sysv/linux/x86_64 -I../sysdeps/unix/sysv/linux/x86_64 -I../sysdeps/unix/sysv/linux/wordsize-64 -I../nptl/sysdeps/unix/sysv/linux -I../nptl/sysdeps/pthread -I../sysdeps/pthread -I../ports/sysdeps/unix/sysv/linux -I../sysdeps/unix/sysv/linux -I../sysdeps/gnu -I../sysdeps/unix/common -I../sysdeps/unix/mman -I../sysdeps/unix/inet -I../nptl/sysdeps/unix/sysv -I../ports/sysdeps/unix/sysv -I../sysdeps/unix/sysv -I../sysdeps/unix/x86_64 -I../nptl/sysdeps/unix -I../ports/sysdeps/unix -I../sysdeps/unix -I../sysdeps/posix -I../sysdeps/x86_64/fpu -I../nptl/sysdeps/x86_64 -I../sysdeps/x86_64 -I../sysdeps/wordsize-64 -I../sysdeps/ieee754/ldbl-96 -I../sysdeps/ieee754/dbl-64 -I../sysdeps/ieee754/flt-32 -I../sysdeps/ieee754 -I../sysdeps/generic/elf -I../sysdeps/generic -I../nptl -I../ports  -I.. -I../libio -I. -nostdinc -isystem /home/patrick/x86_64/tmp/cross/lib/gcc/x86_64-linux/4.1.1/include -isystem /home/patrick/x86_64/tmp/staging/x86_64-linux/include -D_LIBC_REENTRANT -include ../include/libc-symbols.h       -DHAVE_INITFINI -x c - \
|       -MD -MP -MF /home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/build-x86_64-linux/tcb-offsets.h.dT -MT '/home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/build-x86_64-linux/tcb-offsets.h.d /home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/build-x86_64-linux/tcb-offsets.h'
| In file included from ../sysdeps/unix/sysv/linux/sys/syscall.h:25,
|                  from ../sysdeps/unix/sysdep.h:21,
|                  from ../sysdeps/unix/x86_64/sysdep.h:19,
|                  from ../sysdeps/unix/sysv/linux/x86_64/sysdep.h:23,
|                  from <stdin>:1:
| /home/patrick/x86_64/tmp/staging/x86_64-linux/include/asm/unistd.h:5:33: error: asm-x86_64/unistd.h: No such file or directory

Here's where I had that file at that moment:
$ find tmp -name unistd.h | grep x86_64/unistd.h
tmp/work/x86_64-linux/linux-libc-headers-2.6.18-r1/linux-2.6.18/include/asm-x86_64/unistd.h
tmp/work/x86_64-linux/linux-libc-headers-2.6.18-r1/install/linux-libc-headers-dev/usr/include/asm-x86_64/unistd.h
tmp/work/x86_64-linux/linux-libc-headers-2.6.18-r1/temp-staging/usr/include/asm-x86_64/unistd.h

Should they also be installed in tmp/staging/x86_64-linux?
"-isystem /home/patrick/x86_64/tmp/staging/x86_64-linux/include" is part
of the link line, but the x86_64 files haven't been installed there.
linux-libc-headers_2.6.18.bb only seems to copy linux, asm and
asm-generic there. I modified its do_stage() to also install asm-x86_64,
then removed everything related to x86_64 and reran bitbake.

Hmm, installing asm-x86_64 broke glibc-intermediate's Linux kernel
header version check during the configure, so I reverted the change to
linux-libc-headers_2.6.18.bb, let bitbake configure glibc-intermediate
and manually copied asm-x86_64 before compiling it.

Next problem during compilation of glibc-intermediate: config-name.h is
not found. glibc-2.5's configure contains a comment that "For
non-generic uname, we don't need to create config-name.h at all." but
apparently it is trying to compile the generic version:

| make[2]: Entering directory `/home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/glibc-2.5/posix'
| .././scripts/mkinstalldirs /home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/build-x86_64-linux/posix
| mkdir /home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/build-x86_64-linux/posix
| ccache x86_64-linux-gcc uname.c -c -std=gnu99 -O2 -Wall -Winline -Wwrite-strings -fexpensive-optimizations -fmerge-all-constants -frename-registers -Wstrict-prototypes  -fomit-frame-pointer    -I../include -I/home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/build-x86_64-linux/posix -I/home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/build-x86_64-linux -I../sysdeps/x86_64/elf -I../nptl/sysdeps/unix/sysv/linux/x86_64 -I../sysdeps/unix/sysv/linux/x86_64 -I../sysdeps/unix/sysv/linux/wordsize-64 -I../nptl/sysdeps/unix/sysv/linux -I../nptl/sysdeps/pthread -I../sysdeps/pthread -I../ports/sysdeps/unix/sysv/linux -I../sysdeps/unix/sysv/linux -I../sysdeps/gnu -I../sysdeps/unix/common -I../sysdeps/unix/mman -I../sysdeps/unix/inet -I../nptl/sysdeps/unix/sysv -I../ports/sysdeps/unix/sysv -I../sysdeps/unix/sysv -I../sysdeps/unix/x86_64 -I../nptl/sysdeps/unix -I../ports/sysdeps/unix -I../sysdeps/unix -I../sysdeps/posix -I../sysdeps/x86_64/fpu -I../nptl/sysdeps/x86_64 -I../sysdeps/x86_64 -I../sysdeps/wordsize-64 -I../sysdeps/ieee754/ldbl-96 -I../sysdeps/ieee754/dbl-64 -I../sysdeps/ieee754/flt-32 -I../sysdeps/ieee754 -I../sysdeps/generic/elf -I../sysdeps/generic -I../nptl -I../ports  -I.. -I../libio -I. -nostdinc -isystem /home/patrick/x86_64/tmp/cross/lib/gcc/x86_64-linux/4.1.1/include -isystem /home/patrick/x86_64/tmp/staging/x86_64-linux/include -D_LIBC_REENTRANT -include ../include/libc-symbols.h       -o /home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/build-x86_64-linux/posix/uname.o -MD -MP -MF /home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/build-x86_64-linux/posix/uname.o.dt -MT /home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/build-x86_64-linux/posix/uname.o
| uname.c:25:25: error: config-name.h: No such file or directory
| uname.c: In function ‘__uname’:
| uname.c:57: error: ‘UNAME_SYSNAME’ undeclared (first use in this function)
| uname.c:57: error: (Each undeclared identifier is reported only once
| uname.c:57: error: for each function it appears in.)
| uname.c:58: error: ‘UNAME_RELEASE’ undeclared (first use in this function)
| uname.c:59: error: ‘UNAME_VERSION’ undeclared (first use in this function)
| uname.c:60: error: ‘UNAME_MACHINE’ undeclared (first use in this function)
| make[2]: *** [/home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/build-x86_64-linux/posix/uname.o] Error 1
| make[2]: Leaving directory `/home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/glibc-2.5/posix'
| make[1]: *** [posix/subdir_lib] Error 2
| make[1]: Leaving directory `/home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/glibc-2.5'
| make: *** [all] Error 2
| FATAL: oe_runmake failed

I manually created the file in
tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/build-x86_64-linux/config-name.h based on its template tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/glibc-2.5/config-name.in.

Then compilation failed again:
| ccache x86_64-linux-gcc ../sysdeps/unix/sysv/linux/pread.c -c -std=gnu99 -O2 -Wall -Winline -Wwrite-strings -fexpensive-optimizations -fmerge-all-constants -frename-registers -Wstrict-prototypes  -fomit-frame-pointer -fexceptions -fasynchronous-unwind-tables   -I../include -I/home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/build-x86_64-linux/posix -I/home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/build-x86_64-linux -I../sysdeps/x86_64/elf -I../nptl/sysdeps/unix/sysv/linux/x86_64 -I../sysdeps/unix/sysv/linux/x86_64 -I../sysdeps/unix/sysv/linux/wordsize-64 -I../nptl/sysdeps/unix/sysv/linux -I../nptl/sysdeps/pthread -I../sysdeps/pthread -I../ports/sysdeps/unix/sysv/linux -I../sysdeps/unix/sysv/linux -I../sysdeps/gnu -I../sysdeps/unix/common -I../sysdeps/unix/mman -I../sysdeps/unix/inet -I../nptl/sysdeps/unix/sysv -I../ports/sysdeps/unix/sysv -I../sysdeps/unix/sysv -I../sysdeps/unix/x86_64 -I../nptl/sysdeps/unix -I../ports/sysdeps/unix -I../sysdeps/unix -I../sysdeps/posix -I../sysdeps/x86_64/fpu -I../nptl/sysdeps/x86_64 -I../sysdeps/x86_64 -I../sysdeps/wordsize-64 -I../sysdeps/ieee754/ldbl-96 -I../sysdeps/ieee754/dbl-64 -I../sysdeps/ieee754/flt-32 -I../sysdeps/ieee754 -I../sysdeps/generic/elf -I../sysdeps/generic -I../nptl -I../ports  -I.. -I../libio -I. -nostdinc -isystem /home/patrick/x86_64/tmp/cross/lib/gcc/x86_64-linux/4.1.1/include -isystem /home/patrick/x86_64/tmp/staging/x86_64-linux/include -D_LIBC_REENTRANT -include ../include/libc-symbols.h       -o /home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/build-x86_64-linux/posix/pread.o -MD -MP -MF /home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/build-x86_64-linux/posix/pread.o.dt -MT /home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/build-x86_64-linux/posix/pread.o
| ../sysdeps/unix/sysv/linux/pread.c:33:4: error: #error "__NR_pread and __NR_pread64 both defined???"
| make[2]: *** [/home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/build-x86_64-linux/posix/pread.o] Error 1
| make[2]: Leaving directory `/home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/glibc-2.5/posix'
| make[1]: *** [posix/subdir_lib] Error 2
| make[1]: Leaving directory `/home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/glibc-2.5'
| make: *** [all] Error 2
| FATAL: oe_runmake failed
NOTE: Task failed: /home/patrick/x86_64/tmp/work/x86_64-linux/glibc-intermediate-2.5-r2/temp/log.do_compile.29319

I did not investigate further. Any comments? What further information
should I provide?

-- 
Bye, Patrick Ohly
--  
Patrick.Ohly at gmx.de
http://www.estamos.de/
-------------- next part --------------
#
# OpenEmbedded local configuration file (sample)
#
# Please visit the Wiki at http://openembedded.org/ for more info.
#
#
# Be SURE to read this file in its entirety and the GettingStarted page on the
# wiki before proceeding.
#
# Once you have done that, remove the line at the end of this
# file and build away.
# 
# WARNING: lines starting with a space (' ') will result in parse failures.
# Remove '# ' from commented lines to activate them.
#
# NOTE: Do NOT use $HOME in your paths, BitBake does NOT expand ~ for you.  If you
# must have paths relative to your homedir use ${HOME} (note the {}'s there
# you MUST have them for the variable expansion to be done by BitBake).  Your
# paths should all be absolute paths (They should all start with a / after
# expansion.  Stuff like starting with ${HOME} or ${TOPDIR} is ok).

# Use this to specify where BitBake should place the downloaded sources into
DL_DIR = "/tmp/oe/sources"

# Delete the line below. Then specify which .bb files to consider for
# your build. Typically this will be something like BBFILES = "/path/to/openembedded/packages/*/*.bb"
BBFILES := "/home/patrick/oe/openembedded/packages/*/*.bb"

# Use the BBMASK below to instruct BitBake to _NOT_ consider some .bb files
# This is a regulary expression, so be sure to get your parenthesis balanced.
BBMASK = ""

# Uncomment this if you want to use a prebuilt toolchain. You will need to
# provide packages for toolchain and additional libraries yourself. You also
# have to set PATH in your environment to make sure BitBake finds additional binaries.
# Note: You will definitely need to say:
#     ASSUME_PROVIDED += "virtual/arm-linux-gcc-2.95"
# to build any of two Linux 2.4 Embedix kernels,
# i.e. openzaurus-sa-2.4.18 and openzaurus-pxa-2.4.18 - and don't forget
# to rename the binaries as instructed in the Wiki.
# ASSUME_PROVIDED += "virtual/${TARGET_PREFIX}gcc virtual/libc"

# Select between multiple alternative providers, if more than one is eligible.
PREFERRED_PROVIDERS = "virtual/qte:qte virtual/libqpe:libqpe-opie"
PREFERRED_PROVIDERS += " virtual/libsdl:libsdl-qpe"
PREFERRED_PROVIDERS += " virtual/${TARGET_PREFIX}gcc-initial:gcc-cross-initial"
PREFERRED_PROVIDERS += " virtual/${TARGET_PREFIX}gcc:gcc-cross"
PREFERRED_PROVIDERS += " virtual/${TARGET_PREFIX}g++:gcc-cross"

# Uncomment this to specify where BitBake should create its temporary files.
# Note that a full build of everything in OpenEmbedded will take GigaBytes of hard
# disk space, so make sure to free enough space. The default TMPDIR is
# <build directory>/tmp
# Don't use symlinks in in the path to avoid problems
# TMPDIR = /tmp/oe

# Uncomment this to specify a machine to build for. See the conf directory
# for machines currently known to OpenEmbedded.
# MACHINE = "collie"
MACHINE = "x86_64"

# Use this to specify the target architecture. Note that this is only
# needed when building for a machine not known to OpenEmbedded. Better use
# the MACHINE attribute (see above)
#TARGET_ARCH = ""

# Use this to specify the target operating system.  The default is "linux",
# for a normal linux system with glibc. Set this to "linux-uclibc" if you want
# to build a uclibc based system.
TARGET_OS = "linux"
# TARGET_OS = "linux-uclibc"

# Uncomment this to select a distribution policy. See the conf directory
# for distributions currently known to OpenEmbedded.
# Although they no longer contain version number in the (file-)name
# familiar-unstable and openzaurus-unstable are so called "versioned"
# distros, i.e. they explicitely select specific versions of various
# packages.
# Stay away from unversioned distros unless you really know what you are doing
# DISTRO = "familiar-unstable"
DISTRO = "generic"

# So far, angstrom.conf and familiar.conf set ENABLE_BINARY_LOCALE_GENERATION
# to generate binary locale packages at build time using qemu-native and
# thereby guarantee i18n support on all devices. If your build breaks on 
# qemu-native consider disabling ENABLE_BINARY_LOCALE_GENERATION (note that
# this breaks i18n on devices with less than 128MB RAM) or installing
# a working third-party qemu (e.g. provided by your distribution) and
# adding qemu-native to ASSUME_PROVIDED
# ENABLE_BINARY_LOCALE_GENERATION = "0"
# ASSUME_PROVIDED += "qemu-native"

# Uncomment this to select a particular major kernel version if the MACHINE setting
# supports more than one major kernel version. Currently this is suported by the
# following MACHINE types: poodle, tosa and simpad.
# MACHINE_KERNEL_VERSION = "2.6"

# Uncomment one of these to build packages during the build process.
# This is done automatically if you set DISTRO (see above)
# INHERIT = "package_ipk"
# INHERIT = "package_tar"

# Add the required image file system types below. Valid are jffs2, tar, cramfs and ext2
#IMAGE_FSTYPES = "jffs2 tar"

# Uncomment this to disable the parse cache (not recommended).
# CACHE = ""

# Uncomment this if you want BitBake to emit debugging output
# BBDEBUG = "yes"

# Uncomment these two if you want BitBake to build images useful for debugging. 
# Note that INHIBIT_PACKAGE_STRIP needs a package format to be defined
# DEBUG_BUILD = "1"
# INHIBIT_PACKAGE_STRIP = "1"

# Uncomment these to build a package such that you can use gprof to profile it.
# NOTE: This will only work with 'linux' targets, not
# 'linux-uclibc', as uClibc doesn't provide the necessary
# object files.  Also, don't build glibc itself with these
# flags, or it'll fail to build.
#
# PROFILE_OPTIMIZATION = "-pg"
# SELECTED_OPTIMIZATION = "${PROFILE_OPTIMIZATION}"
# LDFLAGS =+ "-pg"

# Uncomment this to enable parallel make.
# This allows make to spawn mutliple processes to take advantage of multiple 
# processors. Useful on SMP machines. This may break some packages - we're
# in the process of marking these so let us know if you find any.
# PARALLEL_MAKE = "-j 4"

# Uncomment this if you want BitBake to emit the log if a build fails.
BBINCLUDELOGS = "yes"

# Specifies a location to search for pre-generated tarballs when fetching
# a cvs:// URI. Outcomment this, if you always want to pull directly from CVS.
#CVS_TARBALL_STASH = ""

# EDIT THIS FILE and then remove the line below before using!
#REMOVE_THIS_LINE:="${@oe.fatal('Read the comments in your conf/local.conf')}"

#PREFERRED_VERSION_glibc-initial ?= "2.2.5"
#PREFERRED_VERSION_glibc-intermediate ?= "2.4"
#PREFERRED_VERSION_gcc-cross-initial ?= "3.4.4"
-------------- next part --------------
#@TYPE: Machine
#@NAME: X86
#@DESCRIPTION: Machine configuration for a Linux running on x86_64 compatible machines

TARGET_ARCH = "x86_64"
# TARGET_VENDOR = "-oe"
#IPKG_EXTRA_ARCHS = ""
# reuse .bb for "normal" x86
PREFERRED_PROVIDER_virtual/kernel = "linux-x86"
# todo: convert to task-base
BOOTSTRAP_EXTRA_RDEPENDS = "kernel pciutils udev kernel-modules"

udevdir = "/dev"
OLDEST_KERNEL = "2.6.17"
GLIBC_ADDONS = "nptl"
GLIBC_EXTRA_OECONF = "--with-tls"

#require conf/machine/include/tune-x86.conf

More information about the Openembedded-devel mailing list