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ARROW-14506: [C++] Conda support for google-cloud-cpp #11851

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ARROW-14506: [C++] Conda support for google-cloud-cpp #11851

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coryan
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@coryan coryan commented Dec 3, 2021

This PR adds support for google-cloud-cpp to the Conda files.
Probably the most difficult change to grok is the change to compile with
C++17 when using Conda:

  • Conda defaults all its builds to C++17,
    this bug goes into
    some detail as to why.
  • Arrow defaults to C++11 if no CMAKE_CXX_STANDARD argument is
    provided.
  • Abseil's ABI changes when used from C++11 vs. C++17, see
    Abseil should install w/ the correct base/options.h abseil/abseil-cpp#696
  • Therefore, one must compile with C++17 to use Abseil in Conda.
  • And because google-cloud-cpp has a direct dependency on Abseil,
    exposed through the headers, one must use C++17 to use
    google-cloud-cpp too.

This PR adds support for `google-cloud-cpp` to the Conda files.
Probably the most difficult change to grok is the change to compile with
C++17 when using Conda:

- Conda defaults all its builds to C++17,
  [this bug](conda/conda-build#3375) goes into
  some detail as to why.
- Arrow defaults to C++11 if no `CMAKE_CXX_STANDARD` argument is
  provided.
- Abseil's ABI changes when used from C++11 vs. C++17, see
  abseil/abseil-cpp#696
- Therefore, one must compile with C++17 to use Abseil in Conda.
- And because `google-cloud-cpp` has a direct dependency on Abseil,
  exposed through the headers, one must use C++17 to use
  `google-cloud-cpp` too.
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github-actions bot commented Dec 3, 2021

@coryan coryan marked this pull request as ready for review December 3, 2021 21:21
@@ -58,6 +58,7 @@ cmake \
-DARROW_DEPENDENCY_SOURCE=SYSTEM \
-DARROW_FLIGHT=ON \
-DARROW_FLIGHT_REQUIRE_TLSCREDENTIALSOPTIONS=ON \
-DARROW_GCS=ON \
-DARROW_HDFS=ON \
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The meta.yml must also contain the google-cloud-cpp host dependency.

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Done. I suspect this may break things (see below).

# specific language governing permissions and limitations
# under the License.

google-cloud-cpp>=1.34.0
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Is google-cloud-cpp only supported on linux?

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google-cloud-cpp is supported on Linux, Windows and macOS. The Conda packages only work on Linux and macOS:

conda-forge/google-cloud-cpp-feedstock#76

If needed, I am happy to fix the Conda package first and then resubmit this PR.

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That would certainly simplify this PR. Until that we can use the bundled google-cloud-cpp.

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coryan commented Dec 6, 2021

Closing until the Conda packages are fixed.

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