Cross-compilation (i386 under amd64) is broken

[Eugene Grosbein]

Hi!

For long time I was building NanoBSD for i386 using amd64 box with success,
just adding NANO_ARCH=i386, TARGET=i386 and TARGET_ARCH=i386 to CONF_BUILD flags
used to create custom make.conf.

But for recent 9.2-STABLE that seems to be broken:

--------------------------------------------------------------
>>> stage 3.1: making dependencies
--------------------------------------------------------------
cd /usr/obj/nanobsd.gw//i386.i386/usr/local/src/sys/GW; MAKEOBJDIRPREFIX=/usr/obj/nanobsd.gw//i386.i386  MACHINE_ARCH=i386  MACHINE=i386  CPUTYPE=  _SHLIBDIRPREFIX=/usr/obj/nanobsd.gw//i386.i
386/usr/local/src/tmp  _LDSCRIPTROOT=  VERSION="FreeBSD 9.2-STABLE amd64 902504"  INSTALL="sh /usr/local/src/tools/install.sh"  PATH=/usr/obj/nanobsd.gw//i386.i386/usr/local/src/tmp/legacy/us
r/sbin:/usr/obj/nanobsd.gw//i386.i386/usr/local/src/tmp/legacy/usr/bin:/usr/obj/nanobsd.gw//i386.i386/usr/local/src/tmp/legacy/usr/games:/usr/obj/nanobsd.gw//i386.i386/usr/local/src/tmp/legac
y/bin:/usr/obj/nanobsd.gw//i386.i386/usr/local/src/tmp/usr/sbin:/usr/obj/nanobsd.gw//i386.i386/usr/local/src/tmp/usr/bin:/usr/obj/nanobsd.gw//i386.i386/usr/local/src/tmp/usr/games:/sbin:/bin:
/usr/sbin:/usr/bin COMPILER_TYPE=gcc /usr/obj/nanobsd.gw//usr/local/src/make.amd64/make  -j 3 __MAKE_CONF=/usr/obj/nanobsd.gw//make.conf.build KERNCONFDIR=/home/nanobsd/gw KERNCONF=GW -m /usr
/local/src/share/mk TARGET=i386 TARGET_ARCH=i386  KERNEL=kernel depend -DNO_MODULES_OBJ
machine -> /usr/local/src/sys/i386/include
x86 -> /usr/local/src/sys/x86/include
awk -f /usr/local/src/sys/tools/vnode_if.awk /usr/local/src/sys/kern/vnode_if.src -p
awk -f /usr/local/src/sys/tools/vnode_if.awk /usr/local/src/sys/kern/vnode_if.src -q
cc -O -pipe -std=c99 -g -Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual -Wundef -Wno-pointer-sign -fformat-extensions -Wmissing-include-dirs -fdiagnostics-show-option -nostdinc -I. -I/usr/local/src/sys -I/usr/local/src/sys/contrib/altq -I/usr/local/src/sys/contrib/ipfilter -I/usr/local/src/sys/contrib/pf -I/usr/local/src/sys/dev/ath -I/usr/local/src/sys/dev/ath/ath_hal -I/usr/local/src/sys/contrib/ngatm -I/usr/local/src/sys/dev/twa -I/usr/local/src/sys/gnu/fs/xfs/FreeBSD -I/usr/local/src/sys/gnu/fs/xfs/FreeBSD/support -I/usr/local/src/sys/gnu/fs/xfs -I/usr/local/src/sys/dev/cxgb -I/usr/local/src/sys/dev/cxgbe -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h -finline-limit=8000 --param inline-unit-growth=100 --param large-function-growth=1000 -mno-align-long-strings -mpreferred-stack-boundary=2 -mno-mmx -mno-sse -msoft-float -ffreestanding -fstack-protector -c /usr/local/src/sys/i386/linux/linu!
 x_genassym
.c
awk -f /usr/local/src/sys/tools/miidevs2h.awk /usr/local/src/sys/dev/mii/miidevs
awk -f /usr/local/src/sys/tools/pccarddevs2h.awk /usr/local/src/sys/dev/pccard/pccarddevs
/usr/local/src/sys/i386/linux/linux_genassym.c:1: error: -mpreferred-stack-boundary=2 is not between 4 and 12
*** [linux_genassym.o] Error code 1
1 error
*** [buildkernel] Error code 2
1 error
*** [buildkernel] Error code 2
1 error

It seems, gcc now thinks it builds code for amd64, insisting on long word stack alignment.

Please help to unbreak this.

Eugene Grosbein