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-... 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.