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bazel: fix the compilation of .proto on Darwin #63879

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merged 1 commit into from Jun 29, 2019
Merged

bazel: fix the compilation of .proto on Darwin #63879

merged 1 commit into from Jun 29, 2019

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kalbasit
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@kalbasit kalbasit commented Jun 28, 2019 •
edited

Motivation for this change

On Darwin, the last argument to GCC is coming up as an empty string. This is breaking the build of proto_library targets. However, I was not able to reproduce with the example cpp project.

This commit patches the cc_wrapper of Bazel that gets installed on
Darwin to remove the last argument if it's an empty string. This is
not a problem on Linux.

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 nix-review --run "nix-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.

cc @guibou @Profpatsch

@ofborg ofborg bot added the 6.topic: darwin Running or building packages on Darwin label Jun 28, 2019
@kalbasit kalbasit changed the title Nixpkgs bazel protobuf darwin [WIP] bazel: fix Protocol Buffers on Darwin Jun 28, 2019
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@GrahamcOfBorg build bazel.tests

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kalbasit commented Jun 28, 2019 •
edited

@guibou @Profpatsch as you can see in the ofborg result, this works well on Linux but breaks on Darwin. This test replicates the environment that I run Bazel in my proprietary project.

I can't see the full error here as it gets snipped, but on my project, I can see this (snipped unrelated args):

external/local_config_cc/cc_wrapper.sh -o bazel-out/host/bin/external/com_google_protobuf/protoc [ ..snip.. ] -lpthread -lm -Wl,-S -undefined dynamic_lookup -headerpad_max_install_names -lstdc++ -lm ''

The issue is happening at the very last argument -lm ''. I remove the empty string denoted by '', I'm able to compile correctly. Why is it getting an empty string still?

I'd love to figure out how to fix this and include this test in nixpkgs to help us determine the C/C++ environment for NixOS/Darwin.

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kalbasit commented Jun 28, 2019 •
edited

I just pushed a change enabling --verbose_failures. Now, we can see the same error I see on the other project.

@GrahamcOfBorg build bazel.tests

  (cd /private/var/tmp/_bazel_yl/e20faadaf9a0f54dcd282d21d9753065/sandbox/processwrapper-sandbox/3/execroot/our_workspace && \
  exec env - \
    PATH=/nix/store/2p5k5g7byv3vnswwlj5gramgrh31zdgm-clang-wrapper-7.1.0/bin:/nix/store/28g4y6vvypdqgfij86r8vzff3j6bb1w5-clang-7.1.0/bin:/nix/store/5ibk8xxh2ly7gypv14dyjrb4c5ly5306-coreutils-8.31/bin:/nix/store/1l2xnahjr23k1zgwfiv89c6w88jddvlz-cctools-binutils-darwin-wrapper/bin:/nix/store/b3yssmqyfc8yid9vyfq41g0m0gf38dj1-cctools-binutils-darwin/bin:/nix/store/5ibk8xxh2ly7gypv14dyjrb4c5ly5306-coreutils-8.31/bin:/nix/store/6lx2gmb5hk4bnyxrm7ldda6yg7rrpbgy-python3-3.7.3/bin:/nix/store/5ibk8xxh2ly7gypv14dyjrb4c5ly5306-coreutils-8.31/bin:/nix/store/5j429ifcj56whma1h565f9f8iw7iv6dj-findutils-4.6.0/bin:/nix/store/9rls681q6pzzrjrizpiigm29d87sgril-diffutils-3.7/bin:/nix/store/fah3qi1j15and1rdi3b9s42qfimvnq2i-gnused-4.7/bin:/nix/store/i7hnsnag89v55c9f6gzsmjm7hs3c5ygy-gnugrep-3.3/bin:/nix/store/xl08nd4gshlwxkrjz3h0sgyknznqhk4g-gawk-4.2.1/bin:/nix/store/7s4rfk8m58ic458was3ma2m3ricrsn5y-gnutar-1.32/bin:/nix/store/dchmhy3mlc3ivjnmhiq1x0a4b57y7mba-gzip-1.10/bin:/nix/store/8g5abpbdn1pa2cd359fydm87hi792z4j-bzip2-1.0.6.0.1-bin/bin:/nix/store/kpx5d5nwbccqr6jsnq2g6ladv8aknqcm-gnumake-4.2.1/bin:/nix/store/mlsjkws5zc9dja87npqy8g1vrfx1rf23-bash-4.4-p23/bin:/nix/store/zyv7avf4zcidnmds1j4b6qyv83hzr25w-patch-2.7.6/bin:/nix/store/lkjx3bfy5fimyxgzazzqna1dq6n1q6kh-xz-5.2.4-bin/bin:/nix/store/mlsjkws5zc9dja87npqy8g1vrfx1rf23-bash-4.4-p23/bin:/nix/store/5ibk8xxh2ly7gypv14dyjrb4c5ly5306-coreutils-8.31/bin:/nix/store/5j429ifcj56whma1h565f9f8iw7iv6dj-findutils-4.6.0/bin:/nix/store/xl08nd4gshlwxkrjz3h0sgyknznqhk4g-gawk-4.2.1/bin:/nix/store/i7hnsnag89v55c9f6gzsmjm7hs3c5ygy-gnugrep-3.3/bin:/nix/store/j1c5z9bf19943m7dwp6d94hgsf847y3d-gnutar-1.32/bin:/nix/store/fah3qi1j15and1rdi3b9s42qfimvnq2i-gnused-4.7/bin:/nix/store/dchmhy3mlc3ivjnmhiq1x0a4b57y7mba-gzip-1.10/bin:/nix/store/3dzl9y7ii4ba8vjfz3h5wh8m1kgci0nh-which-2.21/bin:/nix/store/xx360szy4vblxn8zw1cfrgivg38xqalz-unzip-6.0/bin \
    PWD=/proc/self/cwd \
  external/local_config_cc/cc_wrapper.sh -o bazel-out/host/bin/external/com_google_protobuf/protoc bazel-out/host/bin/external/com_google_protobuf/_objs/protoc/main.o bazel-out/host/bin/external/com_google_protobuf/libprotoc_lib.a bazel-out/host/bin/external/com_google_protobuf/libprotobuf.a bazel-out/host/bin/external/com_google_protobuf/libprotobuf_lite.a bazel-out/host/bin/external/net_zlib/libzlib.a -lpthread -lm -lpthread -lm -lpthread -lm -lpthread -lm -Wl,-S -undefined dynamic_lookup -headerpad_max_install_names -lstdc++ -lm '')
Execution platform: @bazel_tools//platforms:host_platform

Use --sandbox_debug to see verbose messages from the sandbox
/nix/store/3307a5slhaq4jnpibhkih5k681wksbhy-bash/bin/bash: warning: setlocale: LC_ALL: cannot change locale (en_US.ISO-8859-1): No such file or directory
/nix/store/mlsjkws5zc9dja87npqy8g1vrfx1rf23-bash-4.4-p23/bin/bash: warning: setlocale: LC_ALL: cannot change locale (en_US.ISO-8859-1): No such file or directory
gcc: error: : No such file or directory

@kalbasit kalbasit force-pushed the nixpkgs_bazel_protobuf_darwin branch from 89a948b to 2eb1991 Compare June 28, 2019 04:46
@kalbasit kalbasit changed the title [WIP] bazel: fix Protocol Buffers on Darwin bazel: fix the compilation of .proto on Darwin Jun 28, 2019
@kalbasit kalbasit force-pushed the nixpkgs_bazel_protobuf_darwin branch 5 times, most recently from b3a32c5 to 564a711 Compare June 28, 2019 04:53
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@GrahamcOfBorg build bazel.tests

@kalbasit kalbasit force-pushed the nixpkgs_bazel_protobuf_darwin branch from 564a711 to ee68277 Compare June 28, 2019 19:34
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@GrahamcOfBorg build bazel.tests

@kalbasit kalbasit changed the title bazel: fix the compilation of .proto on Darwin [WIP] bazel: fix the compilation of .proto on Darwin Jun 29, 2019
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kalbasit commented Jun 29, 2019 •
edited

It turned out to be still broken for the java_proto_library. I can replicate within my proprietary project all the way back to 0.22 in 555734e

EDIT: I'll merge this one without the java test and file a separate PR to deal with it.

@kalbasit kalbasit changed the title [WIP] bazel: fix the compilation of .proto on Darwin bazel: fix the compilation of .proto on Darwin Jun 29, 2019
@kalbasit
bazel: fix the compilation of .proto on Darwin
a6650e2 
On Darwin, the last argument to GCC is coming up as an empty string.
This is breaking the build of proto_library targets. However, I was not
able to reproduce with the example cpp project[0].

This commit patches the cc_wrapper of Bazel that gets installed on
Darwin to remove the last argument if it's an empty string. This is
not a probem on Linux.

[0]: https://github.com/bazelbuild/examples/tree/master/cpp-tutorial/stage3
@kalbasit kalbasit force-pushed the nixpkgs_bazel_protobuf_darwin branch from 57a8d0f to a6650e2 Compare June 29, 2019 16:55
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@GrahamcOfBorg build bazel.tests

@kalbasit kalbasit merged commit c49b7f6 into NixOS:master Jun 29, 2019
@kalbasit kalbasit deleted the nixpkgs_bazel_protobuf_darwin branch June 29, 2019 18:07
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Thanks, great work!

It does look suspiciously like a bazel bug though, can you open an upstream issue?

@aherrmann-da aherrmann-da mentioned this pull request Aug 19, 2019
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@kalbasit kalbasit mentioned this pull request Oct 25, 2019
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flokli commented Oct 25, 2019

@kalbasit did you open an issue upstream? I don't see anything linked here…

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