On Thu, Mar 21, 2013 at 11:34 PM, Stuart Henderson <[email protected]> wrote: > On 2013/03/21 21:54, Miod Vallat wrote: >> > - www/chromium - OSError: [Errno 8] Exec format error >> >> Please make the binary available to me offlist, as well as its linking >> command (or build log, whatever suits you). > > Well this is very strange because if I run the program which generates > the error message under ktrace -i, there is no ENOEXEC... > > python ../tools/protoc_wrapper/protoc_wrapper.py --include "" --protobuf > "/usr/obj/chromium-25.0.1364.173/chromium-25.0.1364.173/out/Release/obj/gen/protoc_out/chrome/common/metrics/proto/chrome_experiments.pb.h" > --proto-in-dir common/metrics/proto --proto-in-file > "chrome_experiments.proto" "--use-system-protobuf=0" -- > "/usr/obj/chromium-25.0.1364.173/chromium-25.0.1364.173/out/Release/protoc" > --cpp_out > "/usr/obj/chromium-25.0.1364.173/chromium-25.0.1364.173/out/Release/obj/gen/protoc_out/chrome/common/metrics/proto" > --python_out > "/usr/obj/chromium-25.0.1364.173/chromium-25.0.1364.173/out/Release/pyproto/chrome/common/metrics/proto"
I think this is related to a binutils bug with "-Wl,--gc-sections". This BZ may be related: http://sourceware.org/bugzilla/show_bug.cgi?id=13195 With binutils-2.15, you have: $ g++ test.C -ffunction-sections -Wl,--gc-sections /usr/bin/ld: Warning: gc-sections option ignored And the resulting binary seems sane. With 2.17 instead: $ g++ test.C -ffunction-sections -Wl,--gc-sections $ But the resulting binary is crap: $ ldd a.out a.out: a.out: Exec format error a.out: exit status 1 $ $ ./a.out[1]: ELF : not found ./a.out[7]: cannot open ÑuõH ZþL dÐøHƒûÿt ff ff Hƒë I‹ ƒì ÿÐHƒûÿuì[AÉÃfff ff UH‰åSHƒì H‹ ˆ 0H…Àt H : No such file or directory ./a.out[7]: : not found ./a.out: syntax error: `)' unexpected ./a.out[7]: 0fff ÿÐH‹C HƒÃ H…ÀuñHƒÄ [ÉÃfff ff ff U‹ Í @H‰å…Àt ÉÃÇ º @ Éë£ff U‹ © @H‰å…Òt ÉÃH 5¹ @H =z Ç ˆ @ è ÿÿÿHƒ=[ : not found ./a.out[7]: ÿïÿX Œÿïÿx Îÿïÿ˜ zR x $ ÈüïÿâA † C DŒ Dƒ D ýïÿ A † C d€ýïÿYA † K Cƒ Œ „Àýïÿ6A † C Eƒ ¤àýïÿ A † I Äàýïÿ_A † I zPLR x ›} 0 $þïÿ+ A † C D þïÿA GA † C d.þïÿ: not found ./a.out[7]: 7 ° @ Ø ø 8 À: not found ./a.out[7]: T: not found ./a.out[8]: : not found ./a.out[9]: syntax error: `&' unexpected cheers, David
