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1286 :: Nim on MIPS

• toad1359 (orginal) [2015-06-03T05:51:45+02:00] view original

  I've been building an OS, and decided to use Nim in it. One problem: My OS is for MIPS. Nim currently doesn't run on MIPS. I'm going to try to see if I can get Nim on my OS kernel. If that works, I'll immediately try to get my Nim code to parse other Nim code.... hopefully at the end I'll have a Nim written, Nim running OS! Wish me luck...

  --A toad

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• Varriount (orginal) [2015-06-03T06:27:43+02:00] view original

  What command line invocation are you using? What C compiler?

  Nim should be able to run anywhere C can run, since it uses C as a backend language.

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• dponyatov (orginal) [2019-09-19T16:02:54+02:00] view original

  Nobody still did not write a tutorial how to build custom programs in OpenWrt for MIPSel (rt5350F)?

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• Araq (orginal) [2019-09-20T09:57:30+02:00] view original

  Maybe it's because MIPS is almost dead. ;-)

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• dponyatov (orginal) [2019-09-20T11:47:53+02:00] view original

  All SOHO routers around me are built on RT5350, but it does not matter as OpenWrt is the same system both for MIPS and modern ARM-based devices. The only single little article is needed on how to integrate Nim with cross-compiler toolchain, or just a single hello project on GitHub.

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• dponyatov (orginal) [2019-09-20T12:22:54+02:00] view original

  PATH=/home/dpon/ICBLINK/openwrt-18.06.4/staging_dir/toolchain-mipsel_24kc_gcc-7.3.0_musl/bin:/home/dpon/Android/Sdk/platform-tools/:/home/dpon/Android/Sdk/build-tools/29.0.2/:/home/dpon/Android/Sdk/cmake/3.10.2.4988404/bin:/home/dpon/.nimble/bin:/home/dpon/Java/jdk1.8.0_162/bin:/home/dpon/Java/eclipse:/home/dpon/Java/maven/bin:/home/dpon/Android/Sdk/platform-tools/:/home/dpon/Android/Sdk/build-tools/29.0.2/:/home/dpon/Android/Sdk/cmake/3.10.2.4988404/bin:/home/dpon/.nimble/bin:/home/dpon/Java/jdk1.8.0_162/bin:/home/dpon/Java/eclipse:/home/dpon/Java/maven/bin:/usr/local/bin:/usr/bin:/bin:/usr/games STAGING_DIR=/home/dpon/ICBLINK/openwrt-18.06.4/staging_dir nim c -o:hello_nim src/hello.nim Hint: used config file '/home/dpon/.choosenim/toolchains/nim-0.20.2/config/nim.cfg' [Conf] Hint: used config file '/home/dpon/nims/mips/src/nim.cfg' [Conf] Hint: system [Processing] Hint: widestrs [Processing] Hint: io [Processing] Hint: hello [Processing] Hint: [Link] mipsel-openwrt-linux-ld: warning: cannot find entry symbol __start; defaulting to 00000000004005d0 /home/dpon/nims/mips/nimcache/stdlib_system.nim.c.o: In function `addInt_mftMOxbyu0h4yByfs3sqjA': /home/dpon/nims/mips/nimcache/stdlib_system.nim.c:4878: undefined reference to `__divdi3' /home/dpon/nims/mips/nimcache/stdlib_system.nim.c.o: In function `mulInt': /home/dpon/nims/mips/nimcache/stdlib_system.nim.c:5432: undefined reference to `__floatsidf' /home/dpon/nims/mips/nimcache/stdlib_system.nim.c:5432: undefined reference to `__floatsidf' /home/dpon/nims/mips/nimcache/stdlib_system.nim.c:5432: undefined reference to `__muldf3' /home/dpon/nims/mips/nimcache/stdlib_system.nim.c:5433: undefined reference to `__floatsidf' /home/dpon/nims/mips/nimcache/stdlib_system.nim.c:5435: undefined reference to `__nedf2' /home/dpon/nims/mips/nimcache/stdlib_system.nim.c:5440: undefined reference to `__subdf3' /home/dpon/nims/mips/nimcache/stdlib_system.nim.c:5440: undefined reference to `__ltdf2' /home/dpon/nims/mips/nimcache/stdlib_system.nim.c:5440: undefined reference to `__subdf3' /home/dpon/nims/mips/nimcache/stdlib_system.nim.c:5440: undefined reference to `__muldf3' /home/dpon/nims/mips/nimcache/stdlib_system.nim.c:5440: undefined reference to `__subdf3' /home/dpon/nims/mips/nimcache/stdlib_system.nim.c:5440: undefined reference to `__muldf3' /home/dpon/nims/mips/nimcache/stdlib_system.nim.c:5440: undefined reference to `__ltdf2' /home/dpon/nims/mips/nimcache/stdlib_system.nim.c:5440: undefined reference to `__ledf2' Error: execution of an external program failed: 'mipsel-openwrt-linux-ld -o /home/dpon/nims/mips/hello_nim /home/dpon/nims/mips/nimcache/stdlib_io.nim.c.o /home/dpon/nims/mips/nimcache/stdlib_system.nim.c.o /home/dpon/nims/mips/nimcache/hello.nim.c.o -lc -lm -ldl'

  Run

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• ffred60 (orginal) [2019-09-20T13:25:22+02:00] view original

  I don't really see it dying. there are still many OpenWRT products and SBC (Small Board Computer) with MIPS processors and they open sourced a part of their architecture, so still more uses to come. why wouldn't we use Nim on MIPS platform, that doesn't seem to be a problem for Go...

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• Araq (orginal) [2019-09-20T14:09:02+02:00] view original

  I stand corrected.

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• federico3 (orginal) [2019-09-20T17:08:10+02:00] view original

  FYI: Nim is building and passing its tests on mipsel and mips64el:

  https://buildd.debian.org/status/package.php?p=nim

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• dponyatov (orginal) [2019-09-22T00:05:48+02:00] view original

  Debian on 8M of Flash? seriously? 8-) https://openwrt.org/toh/hilink/hlk-rm04

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• leorize (orginal) [2019-09-22T04:44:01+02:00] view original

  I think what he meant is that there might be issues with your setup as Nim apparantly works fine on MIPS.

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• leorize (orginal) [2019-09-22T04:46:09+02:00] view original

  This error means that libgcc wasn't linked in by the compiler. Make sure that the "linker" is set to your cross-compiling gcc instead of ld. Also, can you elaborate more on how you setup your system?

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• dponyatov (orginal) [2019-09-25T09:07:18+02:00] view original

  --verbosity:3 does not give gcc/g++ calls in compiling log is it a bug?

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• dponyatov (orginal) [2019-09-25T09:39:18+02:00] view original

  compiles with

  
  --os:linux
  --cpu:mipsel
  --cc:gcc
  --gcc.exe:"mipsel-openwrt-linux-musl-gcc"
  --gcc.linkerexe:"mipsel-openwrt-linux-musl-ld"
  --passC="-O0 -g3"
  --passL="-lc -lgcc -L/home/dpon/ICBLINK/openwrt-18.06.4/staging_dir/toolchain-mipsel_24kc_gcc-7.3.0_musl/initial/lib/gcc/mipsel-openwrt-linux-musl/7.3.0"
  --listCmd
  --nimcache:nimcache
  Run

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• dponyatov (orginal) [2019-09-25T16:06:17+02:00] view original

  https://github.com/ponyatov/nims/tree/ponyatov/mips

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• dponyatov (orginal) [2019-09-26T12:49:34+02:00] view original

  I found a hack lets to run HelloWorld:

  
  XPATH = PATH=$(TOOLCHAIN)/bin:$(HOME)/.nimble/bin STAGING_DIR=$(STAGING)
  hello_nim: src/hello.nim src/nim.cfg Makefile
          $(XPATH) nim c -o:$@ $<
          @file $@ ; ls -la $@
          @$(XPATH) $(SZ) -x $@
          @$(XPATH) $(OD) -x $@ | grep -i GLIBC
  Run

  
  --gcc.exe:"mipsel-openwrt-linux-musl-gcc"
  --gcc.linkerexe:"mipsel-openwrt-linux-musl-gcc"
  # --passC=...disabled
  # --passL=..disabled
  Run

  https://github.com/ponyatov/nims/tree/239fee6f82fd0f3b542800e75e405771b8b534e9/mips

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• dponyatov (orginal) [2019-09-26T15:47:56+02:00] view original

  I did it: https://github.com/ponyatov/nims/blob/260926-884b/mips/src/nim.cfg

  The magic with C++ compiling was the use of gcc as a linker:

  
  --os:linux
  --cpu:mipsel
  --cc:gcc
  gcc.exe:"mipsel-openwrt-linux-musl-gcc"
  gcc.linkerexe:"mipsel-openwrt-linux-musl-gcc"
  gcc.cpp.exe:"mipsel-openwrt-linux-musl-g++"
  gcc.cpp.linkerexe:"mipsel-openwrt-linux-musl-gcc"
  --listCmd
  passL:"-L/home/dpon/ICBLINK/openwrt-18.06.4/staging_dir/target-mipsel_24kc_musl/usr/lib"
  passL:"-L/home/dpon/ICBLINK/openwrt-18.06.4/staging_dir/toolchain-mipsel_24kc_gcc-7.3.0_musl/lib/gcc/mipsel-openwrt-linux-musl/7.3.0"
  passL:"-luClibc++"
  --debugger:native
  Run

  PS: and don't forget to enable CONFIG_PACKAGE_uclibcxx=y in OpenWrt .config

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