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6362 :: raise error using zig as cross compile

• zhouhaiming (orginal) [2020-05-21T02:57:54+02:00] view original

  
  # nim c -f --cc:zig --zig.options.linker:"-target arm-linux-musleabihf" --zig.options.always:"-target arm-linux-musleabihf" hello.nim
  command line(1, 2) Error: unknown C compiler: 'zig'. Available options are: gcc, switch_gcc, llvm_gcc, clang, bcc, vcc, tcc, env, icl, icc, clang_cl
  Run

  
  # nim --version
  Nim Compiler Version 1.3.5 [Linux: amd64]
  Compiled at 2020-05-20
  Copyright (c) 2006-2020 by Andreas Rumpf
  
  git hash: 6969a468ceaab7384d7448bfd88e47a5b24c3a97
  active boot switches: -d:release
  Run

  
  # zig version
  0.6.0
  Run

  
  # cat hello.nim
  echo "Hello World"
  Run

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• SebastianM (orginal) [2020-05-21T08:00:41+02:00] view original

  You forgot to provide architecture for code generation.

  Please add --cpu:arm just after nim command:

  nim --cpu:arm --cc:zig --zig.options.linker: "-target arm-linux-musleabihf" --zig.options.always: "-target arm-linux-musleabihf" c ./hello.nim

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• Araq (orginal) [2020-05-21T08:39:29+02:00] view original

  You should use --cc:clang --clang.exe=zig.

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• zhouhaiming (orginal) [2020-05-21T08:54:29+02:00] view original

  
  # nim --cpu:arm --cc:zig --zig.options.linker: "-target arm-linux-musleabihf" --zig.options.always: "-target arm-linux-musleabihf" c ./hello.nim
  command line(1, 2) Error: unknown C compiler: 'zig'. Available options are: gcc, switch_gcc, llvm_gcc, clang, bcc, vcc, tcc, env, icl, icc, clang_cl
  Run

  still raise error

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• Araq (orginal) [2020-05-21T08:59:16+02:00] view original

  It's cc:clang.

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• zhouhaiming (orginal) [2020-05-21T09:00:51+02:00] view original

  
  # nim c --cpu:arm --cc:clang --clang.exe=zig --clang.linkerexe=zig hello.nim
  Hint: used config file '/root/nim/config/nim.cfg' [Conf]
  Hint: used config file '/root/nim/config/config.nims' [Conf]
  Hint: system [Processing]
  Hint: widestrs [Processing]
  Hint: io [Processing]
  Hint: hello [Processing]
  CC: stdlib_io.nim
  CC: stdlib_system.nim
  CC: hello.nim
  Invalid argument: -c
  See `zig --help` for detailed usage information
  Invalid argument: -c
  See `zig --help` for detailed usage information
  Invalid argument: -c
  See `zig --help` for detailed usage information
  Error: execution of an external compiler program 'zig -c  -w   -I/root/nim/lib -I/root/gencfg_arm -o /root/.cache/nim/hello_d/stdlib_io.nim.c.o /root/.cache/nim/hello_d/stdlib_io.nim.c' failed with exit code: 1
  Run

  still error

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• Araq (orginal) [2020-05-21T09:05:22+02:00] view original

  shrug Not our bug. :-)

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• SebastianM (orginal) [2020-05-21T10:09:12+02:00] view original

  Try with Nim devel as zig support was implemented about April 25. It sould work there (as I'm using it) and for me it works but only with --cpu:arm not arm64.

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• zhouhaiming (orginal) [2020-05-21T10:18:07+02:00] view original

  
  # nim c -d:release --opt=size --passL:'-s -static -target arm' --cc:clang  --clang.exe=clang --clang.linkerexe=clang hello.nim
  Hint: used config file '/root/nim/config/nim.cfg' [Conf]
  Hint: used config file '/root/nim/config/config.nims' [Conf]
  Hint: system [Processing]
  Hint: widestrs [Processing]
  Hint: io [Processing]
  Hint: hello [Processing]
  Hint:  [Link]
  Hint: 37816 LOC; 0.215 sec; 49.371MiB peakmem; Release build; proj: /root/gencfg_arm/hello.nim; out: /root/gencfg_arm/hello [SuccessX]
  # file hello
  hello: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), statically linked, BuildID[sha1]=36900acac886a71566ca020d8e766a22ba6ba154, for GNU/Linux 3.2.0, stripped
  Run

  Why is x86-64 arch? not arm?

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• zhouhaiming (orginal) [2020-05-21T10:20:21+02:00] view original

  I actually want to compile the program to a static arm version

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• Yardanico (orginal) [2020-05-22T01:18:37+02:00] view original

  Well I don't think that's a Nim bug, but one thing you might try is to pass -O2 in --passC and --passL (it helped me in the past where by default i was getting SIGILL)

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• zhouhaiming (orginal) [2020-05-22T02:58:06+02:00] view original

  
  # nim c -d:danger --opt:size --cpu:arm --cc:clang --clang.exe="zigcc" --clang.linkerexe="zigcc" --passC:"-O2 -target mipsel-linux-musl" --passL:"-O2 -target mipsel-linux-musl" gencfg.nim
  Hint: used config file '/root/nim/config/nim.cfg' [Conf]
  Hint: used config file '/root/nim/config/config.nims' [Conf]
  Hint: system [Processing]
  Hint: widestrs [Processing]
  Hint: io [Processing]
  Hint: gencfg [Processing]
  Hint: os [Processing]
  Hint: strutils [Processing]
  Hint: parseutils [Processing]
  Hint: math [Processing]
  Hint: bitops [Processing]
  Hint: macros [Processing]
  Hint: algorithm [Processing]
  Hint: unicode [Processing]
  Hint: pathnorm [Processing]
  Hint: osseps [Processing]
  Hint: posix [Processing]
  Hint: times [Processing]
  Hint: options [Processing]
  Hint: typetraits [Processing]
  Hint: streams [Processing]
  Hint:  [Link]
  Hint: 61796 LOC; 0.435 sec; 76.281MiB peakmem; Dangerous Release build; proj: /root/gencfg_arm/gencfg.nim; out: /root/gencfg_arm/gencfg [SuccessX]
  Run

  and then I transfer the gencfg program to my mipsel arch router:

  
  # ./gencfg 7.3.3.4
  SIGILL: Illegal operation.
  Run

  still error

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• zhouhaiming (orginal) [2020-05-22T03:22:20+02:00] view original

  You are completely correct, I am so sloppy ^_^ ^_^

  
  # nim c -d:danger --opt:size --cpu:mipsel --cc:clang --clang.exe="zigcc" --clang.linkerexe="zigcc" --passC:"-target mipsel-linux-musl" --passL:"-target mipsel-linux-musl" gencfg.nim
  Hint: used config file '/root/nim/config/nim.cfg' [Conf]
  Hint: used config file '/root/nim/config/config.nims' [Conf]
  Hint: system [Processing]
  Hint: widestrs [Processing]
  Hint: io [Processing]
  Hint: gencfg [Processing]
  Hint: os [Processing]
  Hint: strutils [Processing]
  Hint: parseutils [Processing]
  Hint: math [Processing]
  Hint: bitops [Processing]
  Hint: macros [Processing]
  Hint: algorithm [Processing]
  Hint: unicode [Processing]
  Hint: pathnorm [Processing]
  Hint: osseps [Processing]
  Hint: posix [Processing]
  Hint: times [Processing]
  Hint: options [Processing]
  Hint: typetraits [Processing]
  Hint: streams [Processing]
  CC: stdlib_dollars.nim
  CC: stdlib_io.nim
  CC: stdlib_system.nim
  CC: stdlib_strutils.nim
  CC: stdlib_pathnorm.nim
  CC: stdlib_times.nim
  CC: stdlib_os.nim
  CC: stdlib_streams.nim
  CC: gencfg.nim
  Hint:  [Link]
  Hint: 61796 LOC; 2.123 sec; 76.289MiB peakmem; Dangerous Release build; proj: /root/gencfg_arm/gencfg.nim; out: /root/gencfg_arm/gencfg [SuccessX]
  # ls -hl gencfg
  -rwxr-xr-x 1 root root 157K May 22 17:03 gencfg
  # file gencfg
  gencfg: ELF 32-bit LSB executable, MIPS, MIPS32 rel2 version 1 (SYSV), statically linked, not stripped
  # ldd gencfg
          not a dynamic executable
  
  Run

  
  --cpu:mipsel
  not --cpu:arm
  Run

  execute OK on my mipsel arch router ^_^ ^_^

  
  Is there a way to strip the size when compiling?
  Run

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• zhouhaiming (orginal) [2020-05-22T03:33:27+02:00] view original

  Is there a way to transfer "--release-small --strip" of zig to nim?

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• Yardanico (orginal) [2020-05-22T14:25:36+02:00] view original

  No, you'll have to find strip for the architecture of the binary, zig cc doesn't expose that functionality - and again, it's not a Nim issue ;)

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• zhouhaiming (orginal) [2020-05-22T15:36:40+02:00] view original

  Couldn't render post #39264.

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• MaxGrenderJones (orginal) [2020-05-25T01:04:24+02:00] view original

  Following a total nerd-snipe, (how cool is zig's cross-compiling capability???) I created https://bitbucket.org/maxgrenderjones/ziggy-buildbox to make cross-compiling static files 'easy'. I haven't tested it on hardware yet - just qemu so far, but was a fun evening's project...

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• MaxGrenderJones (orginal) [2020-06-01T00:53:51+02:00] view original

  The illegal instruction error is by design, it would seem. See: https://github.com/ziglang/zig/wiki/FAQ#why-do-i-get-illegal-instruction-when-using-with-zig-cc-to-build-c-code

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• Yardanico (orginal) [2020-06-02T02:55:27+02:00] view original

  "undefined behaviour" in Nim's default GC is "by design" too - https://github.com/nim-lang/Nim/blob/devel/lib/system/gc_common.nim#L383

  
  /home/dian/.nim/lib/system/gc_common.nim:387:50: runtime error: load of misaligned address 0x7ffc26aede64 for type 'void *', which requires 8 byte alignment
  0x7ffc26aede64: note: pointer points here
    00 00 00 00 00 00 00 00  37 90 03 99 9d e6 2d 7b  c0 44 40 00 00 00 00 00  d0 eb ae 26 fc 7f 00 00
                ^
  SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /home/dian/.nim/lib/system/gc_common.nim:387:50
  Run

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