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libmodbus: fix for cross compilation #57824

Merged
merged 1 commit into from Mar 29, 2019
Merged

libmodbus: fix for cross compilation #57824

merged 1 commit into from Mar 29, 2019

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illegalprime
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Motivation for this change

Currently:

$ nix build -f channel:nixpkgs-unstable pkgsCross.armv7l-hf-multiplatform.libmodbus

builder for '/nix/store/ps48zagkkjv1l58yy2hrvnxf5bxvf0rw-libmodbus-3.1.4-armv7l-unknown-linux-gnueabihf.drv' failed with exit code 2; last 10 log lines:
  Making all in tests
  make  all-am
    CC       bandwidth-server-one.o
    CCLD     bandwidth-server-one
  /nix/store/4dn67dzxlwmglqx9xx75sckrwqzw32cp-armv7l-unknown-linux-gnueabihf-binutils-2.31.1/bin/armv7l-unknown-linux-gnueabihf-ld: ../src/.libs/libmodbus.so: undefined reference to `rpl_malloc'
  collect2: error: ld returned 1 exit status
  make[3]: *** [Makefile:644: bandwidth-server-one] Error 1
  make[2]: *** [Makefile:580: all] Error 2
  make[1]: *** [Makefile:499: all-recursive] Error 1
  make: *** [Makefile:385: all] Error 2

this seems related: stephane/libmodbus#297

setting these variables fixing this error, even though it looks ugly.

Things done
  • Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS)
  • Built on platform(s)
    • NixOS
    • macOS
    • other Linux distributions
  • Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
  • Tested compilation of all pkgs that depend on this change using nix-shell -p nox --run "nox-review wip"
  • Tested execution of all binary files (usually in ./result/bin/)
  • Determined the impact on package closure size (by running nix path-info -S before and after)
  • Assured whether relevant documentation is up to date
  • Fits CONTRIBUTING.md.

illegalprime
illegalprime commented Mar 17, 2019
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pkgs/development/libraries/libmodbus/default.nix Outdated
@@ -8,6 +8,11 @@ stdenv.mkDerivation rec {
sha256 = "0drnil8bzd4n4qb0wv3ilm9zvypxvwmzd65w96d6kfm7x6q65j68";
};

preConfigure = ''
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should add a comment here

roberth
roberth reviewed Mar 17, 2019
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pkgs/development/libraries/libmodbus/default.nix Outdated
@@ -8,6 +8,11 @@ stdenv.mkDerivation rec {
sha256 = "0drnil8bzd4n4qb0wv3ilm9zvypxvwmzd65w96d6kfm7x6q65j68";
};

preConfigure = ''
export ac_cv_func_malloc_0_nonnull=yes
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Same concern as #57825 (comment)

@veprbl veprbl added the 6.topic: cross-compilation Building packages on a different sort platform than than they will be run on label Mar 24, 2019
Mic92
Mic92 reviewed Mar 24, 2019
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pkgs/development/libraries/libmodbus/default.nix Outdated
preConfigure = ''
export ac_cv_func_malloc_0_nonnull=yes
export ac_cv_func_realloc_0_nonnull=yes
'';
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@Mic92 Mic92 Mar 24, 2019 •
edited

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Usually it is enough to pass this to configureFlags like this:

configureFlags = [
  "ac_cv_func_realloc_0_nonnull=yes"
  "ac_cv_func_malloc_0_nonnull=yes"
];

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yup, you were right!

@Mic92 Mic92 merged commit 382333b into NixOS:master Mar 29, 2019
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@Mic92 Mic92 Mic92 left review comments

@roberth roberth roberth left review comments

@bjornfor bjornfor Awaiting requested review from bjornfor

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6.topic: cross-compilation Building packages on a different sort platform than than they will be run on 10.rebuild-darwin: 0 10.rebuild-linux: 1-10
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5 participants
@illegalprime @Mic92 @roberth @veprbl @GrahamcOfBorg