Commits
Wes McKinney authored 07c6ade9b83
ARROW-849: [C++] Support setting production build dependencies with ARROW_BUILD_TOOLCHAIN Opening this for comment. If we like this, we can do the same thing in parquet-cpp. Will need to be documented in the README. I did not use the environment variable for gflags/gtest/gbenchmark, since this are test/benchmark-only dependencies, and they build automatically when needed. Author: Wes McKinney <wes.mckinney@twosigma.com> Closes #565 from wesm/ARROW-849 and squashes the following commits: 4507712 [Wes McKinney] Fix use of RAPIDJSON_HOME e9fa400 [Wes McKinney] Use ARROW_BUILD_TOOLCHAIN if it's defined, but override with environment variables d056a83 [Wes McKinney] Pull environment variables by default, override if toolchain variable is present ec003c6 [Wes McKinney] Support setting production build dependencies with ARROW_BUILD_TOOLCHAIN environment variable