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Date:      Sun, 8 Jun 2014 23:05:25 -0400
From:      Chris Ross <cross+freebsd@distal.com>
To:        freebsd-stable@freebsd.org
Subject:   Cross-building FreeBSD core...
Message-ID:  <FB1DB8CA-F1D1-4339-B238-F08704EDDA75@distal.com>

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  So, I was investigating the notion of cross-building FreeBSD stable/10.  Specifically, I wanted to try to build a full amd64 buildworld and buildkernel on a sparc64.

  I found https://wiki.freebsd.org/A_Brief_Guide_To_Cross_Compiling_FreeBSD which I knew was a little old, but tried it.  It failed in "stage 4.2: building libraries", after quite a long time, eventually failing in:

===> lib/ncurses/ncurses (obj,depend,all,install)
[....]
cc  -o make_keys -O2 -pipe  -I. -I/home/cross/obj.amd64/usr/src/lib/ncurses/ncurses/../ncurses -I/usr/src/lib/ncurses/ncurses/../ncurses -I/usr/src/lib/ncurses/ncurses/../ncurses -I/usr/src/lib/ncurses/ncurses/../../../contrib/ncurses/include -I/usr/src/lib/ncurses/ncurses/../../../contrib/ncurses/ncurses -Wall -DNDEBUG -DHAVE_CONFIG_H -DFREEBSD_NATIVE -DTERMIOS -std=gnu99 -Qunused-arguments  -fstack-protector -Wsystem-headers -Werror -Wall -Wno-format-y2k -W -Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-uninitialized -Wno-pointer-sign -Wno-empty-body -Wno-string-plus-int -Wno-tautological-compare -Wno-unused-value -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion /usr/src/lib/ncurses/ncurses/../../../contrib/ncurses/ncurses/tinfo/make_keys.c
./make_keys keys.list > init_keytry.h
./make_keys: Exec format error
*** Error code 126


  Is this a bug that needs to be fixed in the build system, or something I did wrong to perform the build?

  I effectively did:

make buildworld TARGET=amd64 TARGET_ARCH=amd64 MAKEOBJDIRPREFIX=/home/cross/obj.amd64

  If anyone has any pointers to the _right_ way to do this, please let me know.  Thanks...

                                                  - Chris




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