Bugzilla Bug 85410

Build fails on Using external build dir KBUILD_OUTPUT



Reproducible: Always
Steps to Reproduce:
1. Build Kernel with make O=external dir
2. export KBUILD_OUTPUT
3. emerge madwifi-driver

Actual Results:  
>>> emerge (1 of 1) net-wireless/madwifi-driver-0.1_pre20050224 to /
 * Determining the location of the kernel source code
 * Found kernel source directory:
 *     /usr/src/linux
 * Found kernel object directory:
 *     /usr/src/bin.sung
 * Found sources for kernel version:
 *     2.6.11
 * Converting madwifi/ath/Makefile to use M= instead of SUBDIRS=...            
                                                                               
                               
...
* Preparing ath_hal module
../Makefile.inc:120: *** KERNELCONF: //usr/src/linux/.config does not exist.. 
Schluss.

!!! ERROR: net-wireless/madwifi-driver-0.1_pre20050224 failed.
!!! Function linux-mod_src_compile, Line 417, Exitcode 2
!!! Unable to make                                  KERNELPATH=//usr/src/linux
KERNELRELEASE=2.6.11
                TARGET=i386-elf TOOLPREFIX=/usr/bin/ all.


Expected Results:  
Build Cleanly

Portage 2.0.51.19 (default-linux/x86/2004.3, gcc-3.3.5, glibc-2.3.4.20040808-r1,
2.6.11 i686)
=================================================================
System uname: 2.6.11 i686 Intel(R) Pentium(R) M processor 1.60GHz
Gentoo Base System version 1.4.16
Python:              dev-lang/python-2.3.4-r1 [2.3.4 (#1, Mar  4 2005, 20:13:54)]
dev-lang/python:     2.3.4-r1
sys-devel/autoconf:  2.13, 2.59-r6
sys-devel/automake:  1.5, 1.8.5-r3, 1.6.3, 1.7.9-r1, 1.4_p6, 1.9.4
sys-devel/binutils:  2.15.92.0.2-r1
sys-devel/libtool:   1.5.10-r4
virtual/os-headers:  2.4.22-r1
ACCEPT_KEYWORDS="x86"
AUTOCLEAN="yes"
CFLAGS="-O2 -march=i686 -fomit-frame-pointer -pipe "
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3.3/env
/usr/kde/3.3/share/config /usr/kde/3.3/shutdown /usr/kde/3/share/config
/usr/lib/X11/xkb /usr/lib/mozilla/defaults/pref /usr/share/config
/var/qmail/control"
CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d"
CXXFLAGS="-O2 -march=i686 -fomit-frame-pointer -pipe "
DISTDIR="/usr/portage/distfiles"
FEATURES="autoaddcvs autoconfig ccache distlocks sandbox sfperms"
GENTOO_MIRRORS="http://ftp.easynet.nl/mirror/gentoo/
ftp://ftp.easynet.nl/mirror/gentoo/ ftp://planetmirror.com/pub/gentoo/"
LANG="de_DE"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/overlays/bmg-main.alternative
/usr/local/overlays/bmg-gnome-current.alternative"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="x86 X X509 Xaw3d aalib acl acpi acpi4linux alsa apache2 avi bash-completion
bitmap-fonts bzip2 bzlib cdparanoia cdr clamav crypt css curl curlwrappers
devmap directfb divx4linux dmx dv dvd dvdr dvdread encode escreen esd ethereal
etwin expat fam fbcon gif gimp gimpprint gmp gpm gps graphviz gs gsm gstreamer
gtk gtk2 icq ieee1394 image insecure-drivers ipv6 java javascript jp2 jpeg
jpeg2k libcaca lm_sensors lzo lzw mmx mmx2 monkey mozdevelop mozilla
moznocompose moznoirc moznomail mozp3p mozplaintext mozsvg mozxmlterm mp3 mpeg
mpeg2 mpeg4 mpi mplayer msession msn multitarget ncurses network oggvorbis
opengl pam pcmcia pcntl perl pg-hier pg-intdatetime pg-vacuumdelay php physfs
playlist png pnp portaudio posix postgres postgresql ppds print private python
qt readline real recode remote rtc samba sdl serial sockets socks5 spell sse ssl
svga szip tcltk tcpd tga theora tiff transparent-proxy truetype truetype-fonts
type1 type1-fonts uml uptimed usb v4l v4l2 vcd vcdimager vim-with-x virus-scan
vnc wavelan wifi wmf wxwindows xanim xattr xchatdccserver xchattext xinerama xml
xml2 xmms xv xvid xvmc zlib"
Unset:  ASFLAGS, CBUILD, CTARGET, LC_ALL, LDFLAGS

johnm: Is this possible to implement with linux-mod?

White: Any idea how to fix it?

gthe problem with this one is here:

BUILD_PARAMS="KERNELPATH=${ROOT}${KV_DIR} KERNELRELEASE=${KV_FULL}
                TARGET=${TARGET} TOOLPREFIX=/usr/bin/"

KV_DIR = the srcdir, which is readlink -f /lib/modules/`uname -r`/source

for example. 
this isnt where the Makefile is kept, as the makefile is kept in KV_OUT_DIR

KV_OUT_DIR = the objdir, which is readlink -f /lib/modules/`uname -r`/build

can you please try changing that to ${KV_OUT_DIR} and testing.
if it works, please comment on this bug.
I will make the ebuild change now anyways, since it wont hurt for anyone not using KBUILD_OUTPUT