Date: Thu, 26 Apr 2012 23:48:47 -0700 From: Tim Kientzle <kientzle@freebsd.org> To: arm@freebsd.org Subject: Cross-buildworld works but not native build? Message-ID: <9AD7075B-B85D-40DB-84B7-FD630B858A30@freebsd.org>
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I've been working with the projects/armv6 tree and have encountered a very confusing situation.
On i386, this works:
$ make TARGET_ARCH=arm TARGET_CPUTYPE=armv6 buildworld
If I take the resulting world and run it on arm, then the following fails (with the exact same source):
$ make buildworld
….
cc -O -pipe -fpic -fvisibility=hidden -DVISIBILITY_HIDDEN -std=gnu99 -Wsystem-headers -Werror -Wall -Wno-format-y2k -Wno-uninitialized -Wno-pointer-sign -c /usr/src/lib/libcompiler_rt/../../contrib/compiler-rt/lib/umoddi3.c -o umoddi3.o
cc -O -pipe -fpic -fvisibility=hidden -DVISIBILITY_HIDDEN -std=gnu99 -Wsystem-headers -Werror -Wall -Wno-format-y2k -Wno-uninitialized -Wno-pointer-sign -c /usr/src/lib/libcompiler_rt/../../contrib/compiler-rt/lib/umodti3.c -o umodti3.o
cc -O -pipe -fpic -fvisibility=hidden -DVISIBILITY_HIDDEN -std=gnu99 -Wsystem-headers -Werror -Wall -Wno-format-y2k -Wno-uninitialized -Wno-pointer-sign -c /usr/src/lib/libcompiler_rt/__sync_fetch_and_add_4.c -o __sync_fetch_and_add_4.o
In file included from /usr/src/lib/libcompiler_rt/__sync_fetch_and_op_n.h:31,
from /usr/src/lib/libcompiler_rt/__sync_fetch_and_add_4.c:6:
/usr/obj/usr/src/tmp/usr/include/machine/atomic.h: In function 'atomic_cmpset_32':
/usr/obj/usr/src/tmp/usr/include/machine/atomic.h:491: error: 'ARM_RAS_START' undeclared (first use in this function)
/usr/obj/usr/src/tmp/usr/include/machine/atomic.h:491: error: (Each undeclared identifier is reported only once
/usr/obj/usr/src/tmp/usr/include/machine/atomic.h:491: error: for each function it appears in.)
/usr/obj/usr/src/tmp/usr/include/machine/atomic.h: In function 'atomic_add_32':
/usr/obj/usr/src/tmp/usr/include/machine/atomic.h:516: error: 'ARM_RAS_START' undeclared (first use in this function)
Looking at the source, ARM_RAS_START really does seem to be undeclared (it's declared in sysarch.h, but atomic.h only includes sysarch.h for kernel builds).
So it looks to me like the cross-buildworld should fail also. In any case, it's not clear why the two aren't behaving the same way.
Tim
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