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6237 :: How to cross-compile to ARM and generate a static binary?

• mildred (orginal) [2020-04-20T18:40:26+02:00] view original

  I need to write a small utility that will run on a BeagleBone Black with glibc 2.26 (I have glibc 2.28 on my dev machine). So I need to find both a toolchain cross-compiler and a way to avoid linking to latest glibc symbols. I could find a COPR repository for fedora with the toolchain.

  To link with older symbols, I found the solution on https://stackoverflow.com/a/61327520/6020072. basically, I create a file symver.h with:

  __asm__(".symver fcntl,fcntl@GLIBC_2.4");
  Run

  And I then build with: nim c --cpu:arm --os:linux --passC:--include=symver.h (--include ensures that the .symver directive comes very early in linking process)

  it was quite hard to come to this, so I wanted to share it.

  Also, for some reason, I had to clean up ~/.cache/nim to get the build pass.

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• mildred (orginal) [2020-04-20T18:41:42+02:00] view original

  By the way, coming from a Go background and wanting to learn Nim because I like the language much more, I think Nim could benefit from better cross compilation and executable portability.

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