ppc64 build failure - asm code - bswap

[David Timms]

Hi, I think this was touched on a month ago, but not sure of resolution:
=====
http://buildsys.rpmfusion.org/logs/fedora-development-rpmfusion_free/936-gcube-0.4-4.fc10/ppc64/
build.log:
...
isopack.c:118: warning: ignoring return value of 'fread', declared with 
attribute warn_unused_result
isopack.c:145: warning: ignoring return value of 'fread', declared with 
attribute warn_unused_result
gcc -g -Wall -I/usr/include -I/usr/local/include -DASM_X86 
-DENABLE_SOUND -DDEFAULT_COLOR_MODE=1 -O2 -g -pipe -Wall 
-Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector 
--param=ssp-buffer-size=4 -m64 -mminimal-toc -fno-strict-aliasing    -c 
-o thpview.o thpview.c
gcc -g -Wall -I/usr/include -I/usr/local/include -DASM_X86 
-DENABLE_SOUND -DDEFAULT_COLOR_MODE=1 -O2 -g -pipe -Wall 
-Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector 
--param=ssp-buffer-size=4 -m64 -mminimal-toc -fno-strict-aliasing    -c 
-o jpeg_tools.o jpeg_tools.c
thpview.c: In function 'thp_write_jpeg_frame':
thpview.c:137: warning: ignoring return value of 'fwrite', declared with 
attribute warn_unused_result
thpview.c: In function 'thp_write_audio_frame':
thpview.c:158: warning: ignoring return value of 'fwrite', declared with 
attribute warn_unused_result
thpview.c: In function 'thp_extract_data':
thpview.c:399: warning: format '%.8x' expects type 'unsigned int', but 
argument 2 has type 'long int'
thpview.c: In function 'main':
thpview.c:517: warning: pointer targets in passing argument 1 of 
'thp_play_movie' differ in signedness
thpview.c:510: warning: ignoring return value of 'fread', declared with 
attribute warn_unused_result
gcc -g -c -o ppc_disasm.o ppc_disasm.c
{standard input}: Assembler messages:
{standard input}:590: Error: Unrecognized opcode: `bswap'
{standard input}:687: Error: Unrecognized opcode: `bswap'
{standard input}:721: Error: Unrecognized opcode: `bswap'
{standard input}:1092: Error: Unrecognized opcode: `bswap'
{standard input}:1146: Error: Unrecognized opcode: `bswap'
{standard input}:1186: Error: Unrecognized opcode: `bswap'
{standard input}:1215: Error: Unrecognized opcode: `bswap'
make: *** [isopack.o] Error 1
make: *** Waiting for unfinished jobs....
error: Bad exit status from /var/tmp/rpm-tmp.rGuH2u (%build)
=====
So it seems that bswap might not suit ppc64 hardware. If that is the 
case then:
# ppc64 build does not seem to support asm opcode bswap
ExcludeArch: ppc64
would seem appropriate an appropriate addition to the .spec. Does that 
make sense ?

Note that it did build OK on i386|x86_64|ppc. I would have imagined that 
ppc64 opcodes would be a superset of ppc, so there might be something 
else going on ?

DaveT.