Crossbuild failure on 8-stable

[Garrett Cooper]

On Thu, Jun 30, 2011 at 9:14 AM, Mark Tinguely <marktinguely at gmail.com> wrote:
> On 6/30/2011 4:22 AM, Hans Petter Selasky wrote:
>>
>> Hi,
>>
>> Trying to cross build ARM fails in the following way on 8-stable:
>>
>> 8.2-STABLE FreeBSD 8.2-STABLE #1: Wed Jun 29 13:09:23 UTC 2011
>>
>> make toolchain TARGET=arm
>>
>> Is this perhaps also an issue in 9-current?
>>
>> Any clues?
>>
>> cc -O -pipe  -ffreestanding -Wformat -I/usr/src/lib/libstand -msoft-float
>> -
>> D_STANDALONE -DBZ_NO_STDIO -DBZ_NO_COMPRESS -DHAVE_MEMCPY -
>> I/usr/src/lib/libstand/../libz -std=gnu99  -c
>> /usr/src/lib/libstand/../libc/net/ntoh.c
>> {standard input}: Assembler messages:
>> {standard input}:27: Error: bad instruction `bswap r0'
>> {standard input}:53: Error: bad instruction `bswap r0'
>>
>
> and you also said:
>
>> Tracing down the issue:
>>
>> /usr/include/machine/endian.h
>>
>> #define __byte_swap_int_var(x) \
>> __extension__ ({ register __uint32_t __X = (x); \
>>    __asm ("bswap %0" : "+r" (__X)); \
>>    __X; })
>>
>> r0 looks like an ARM register passed to a non-arm assembler. I'm going to
>> try:
>>
>
> Looks like you have an ARM compiler/assembler because the assembler rejects
> the i386/amd64 "bswap" assembly command.
>
> Does anyone remember if the cross compiler has the cross include paths
> compiled into them or should there be a "-I" in the compile command to
> correctly expand the "#include <machine/endian.h>" ? I thought the cross
> path was compiled into the cross compiler.
>
> You manually test the "cc" command with the included "-I" option.

Adding -v to the command line might yield more interesting results in
tracking down the culprit header.
-Garrett