>Number:         35166
>Category:       port-amd64
>Synopsis:       amd64 kernel with COMPAT_LINUX enabled fails to compile
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-amd64-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Dec 01 18:35:00 +0000 2006
>Originator:     Edgar Fuß
>Release:        NetBSD 3.1
>Organization:
Mathematisches Institut der Universität Bonn
>Environment:
System: NetBSD weser.math.uni-bonn.de 3.1 NetBSD 3.1 (WAP05-Server-MP) #2: Tue N
ov 14 17:32:20 CET 2006 root@weser.math.uni-bonn.de:/usr/obj/sys/arch/amd64/comp
ile.amd64/wap05serv-mp amd64
Architecture: x86_64
Machine: amd64
>Description:
	I can't imagine I'm the first to spot this. However, the only PRs		I could find in port-amd64 that matched COMPAT_LINUX were two closed
	ones relating to -current.
	We would like to run our compute server on NetBSD/amd64 with
	COMPAT_LINUX so as to be able to run commercial software (mainly
	Mathematica) on that machine. We have 8GB RAM, so /i386 is not an
	option.
	A NetBSD 3.1/amd64 kernel fails to build if COMPAT_LINUX is enabled:

./build.sh -j 4 -m amd64 -u -T tooldir.NetBSD-3.1-x86_64 kernel=test
===> build.sh command: ./build.sh -j 4 -m amd64 -u -T tooldir.NetBSD-3.1-x86_64 kernel=test
===> build.sh started: Fri Dec  1 16:37:38 CET 2006
===> MACHINE:          amd64
===> MACHINE_ARCH:     x86_64
===> TOOLDIR path:     /usr/src/tooldir.NetBSD-3.1-x86_64
===> DESTDIR path:     /usr/src/destdir.amd64
===> RELEASEDIR path:  /usr/src/releasedir
===> makewrapper:      /usr/src/tooldir.NetBSD-3.1-x86_64/bin/nbmake-amd64
===> Updated /usr/src/tooldir.NetBSD-3.1-x86_64/bin/nbmake-amd64
===> Building kernel without building new tools
===> Building kernel:  test
===> Build directory:  /usr/src/sys/arch/amd64/compile/obj.amd64/test
Build directory is /usr/src/sys/arch/amd64/compile/obj.amd64/test
Don't forget to run "make depend"
depending the kern library objects
depending the compat library objects
--- __always_make_compatlib ---
--- __always_make_kernlib ---
--- exec_conf.o ---
--- init_sysent.o ---
--- kern_acct.o ---
--- kern_clock.o ---
--- exec_conf.o ---
#   compile  test/exec_conf.o
/usr/src/tooldir.NetBSD-3.1-x86_64/bin/x86_64--netbsd-gcc -mcmodel=kernel -mno-red-zone -ffreestanding -O2 -Werror -Wall -Wno-main -Wno-format-zero-length -Wpointer-arith -Wmissing-prototypes -Wstrict-prototypes -Wno-sign-compare -fno-zero-initialized-in-bss -Damd64 -Dx86_64 -I. -I/usr/src/sys/arch -I/usr/src/sys -nostdinc -DLKM -DMAXUSERS=32 -D_KERNEL -D_KERNEL_OPT -I/usr/src/sys/dist/ipf -c /usr/src/sys/kern/exec_conf.c
--- init_sysent.o ---
#   compile  test/init_sysent.o
/usr/src/tooldir.NetBSD-3.1-x86_64/bin/x86_64--netbsd-gcc -mcmodel=kernel -mno-red-zone -ffreestanding -O2 -Werror -Wall -Wno-main -Wno-format-zero-length -Wpointer-arith -Wmissing-prototypes -Wstrict-prototypes -Wno-sign-compare -fno-zero-initialized-in-bss -Damd64 -Dx86_64 -I. -I/usr/src/sys/arch -I/usr/src/sys -nostdinc -DLKM -DMAXUSERS=32 -D_KERNEL -D_KERNEL_OPT -I/usr/src/sys/dist/ipf -c /usr/src/sys/kern/init_sysent.c
--- kern_acct.o ---
#   compile  test/kern_acct.o
/usr/src/tooldir.NetBSD-3.1-x86_64/bin/x86_64--netbsd-gcc -mcmodel=kernel -mno-red-zone -ffreestanding -O2 -Werror -Wall -Wno-main -Wno-format-zero-length -Wpointer-arith -Wmissing-prototypes -Wstrict-prototypes -Wno-sign-compare -fno-zero-initialized-in-bss -Damd64 -Dx86_64 -I. -I/usr/src/sys/arch -I/usr/src/sys -nostdinc -DLKM -DMAXUSERS=32 -D_KERNEL -D_KERNEL_OPT -I/usr/src/sys/dist/ipf -c /usr/src/sys/kern/kern_acct.c
--- kern_clock.o ---
#   compile  test/kern_clock.o
/usr/src/tooldir.NetBSD-3.1-x86_64/bin/x86_64--netbsd-gcc -mcmodel=kernel -mno-red-zone -ffreestanding -O2 -Werror -Wall -Wno-main -Wno-format-zero-length -Wpointer-arith -Wmissing-prototypes -Wstrict-prototypes -Wno-sign-compare -fno-zero-initialized-in-bss -Damd64 -Dx86_64 -I. -I/usr/src/sys/arch -I/usr/src/sys -nostdinc -DLKM -DMAXUSERS=32 -D_KERNEL -D_KERNEL_OPT -I/usr/src/sys/dist/ipf -c /usr/src/sys/kern/kern_clock.c
--- exec_conf.o ---
/usr/src/sys/kern/exec_conf.c:467: error: `LINUX_ELF_AUX_ARGSIZ' undeclared here (not in a function)
/usr/src/sys/kern/exec_conf.c:467: error: initializer element is not constant
/usr/src/sys/kern/exec_conf.c:467: error: (near initialization for `execsw_builtin[3].es_arglen')
/usr/src/sys/kern/exec_conf.c:471: error: initializer element is not constant
/usr/src/sys/kern/exec_conf.c:471: error: (near initialization for `execsw_builtin[3]')
*** [exec_conf.o] Error code 1
1 error

nbmake: stopped in /usr/obj/sys/arch/amd64/compile.amd64/test

ERROR: Failed to make all in /usr/src/sys/arch/amd64/compile/obj.amd64/test
*** BUILD ABORTED ***

>How-To-Repeat:
	Make a kernel config that equals 3.1/amd64/GENERIC plus COMPAT_LINUX,
	try to build that kernel.
>Fix: