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Review request for mesos, Jeff Coffler, John Kordich, Joseph Wu, and Li Li. Bugs: MESOS-7498 https://issues.apache.org/jira/browse/MESOS-7498 Repository: mesos Description ------- Mesos must be built with the 64-bit tools. Previously, we added a dependency which checked if a certain environment variable was set. When it failed, the message would be a cryptic message: error MSB6006: "cmd.exe" exited with code 255. As the environment variable had to be picked up by every toolchain (Visual Studio Code, CMake, MSBuild, Visual Studio), it was a frequent cause of build frustrations. This patch removes the `ENSURE_TOOL_ARCH` custom command, and instead asserts at configuration time that the toolset matches `host=x64`. With this toolset, CMake embeds the preferred tool architecture in the generated solutions, eliminating the need for an environment variable to be set, or for `/p:PreferredToolArchitecture=x64` to be passed to the build tool directly. Diffs ----- cmake/CompilationConfigure.cmake 7b2669f0c54abf9b5e0fd60f8af01e97e1f0f86a src/CMakeLists.txt 40d921ee7026f5ac47efbf0243e1cafab57825f9 src/slave/cmake/AgentConfigure.cmake 2e7ae6eaf4212b728eccf0bee957bbf88ff8f3e3 Diff: https://reviews.apache.org/r/59157/diff/1/ Testing ------- Clean build on Windows, with environment variable explicitly unset. Tested with VS Code CMake extension, and with `cmake --build .` manually, and with `msbuild` manually, and with Visual Studio manually. Thanks, Andrew Schwartzmeyer