[jira] [Created] (MESOS-7581) Specifying an unbundled dependency can cause build to pick up wrong Boost version

["Benjamin Bannier (JIRA)" <ji...@apache.org>]

Benjamin Bannier created MESOS-7581:
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             Summary: Specifying an unbundled dependency can cause build to pick up wrong Boost version
                 Key: MESOS-7581
                 URL: https://issues.apache.org/jira/browse/MESOS-7581
             Project: Mesos
          Issue Type: Bug
          Components: build
    Affects Versions: 1.2.2, 1.3.1, 1.1.3
            Reporter: Benjamin Bannier
            Assignee: Benjamin Bannier


Specifying an unbundled dependency can cause the build to pick up a wrong Boost version. Assuming we have e.g., both protobuf and Boost installed in {{PREFIX}}, configuring with {{--with-protobuf=PREFIX}} causes the build to pick up the Boost version from {{PREFIX}} instead of using the bundled one.

This appears to be due to how we specify Boost include paths. Boost paths are added with {{-isystem}} to suppress warnings; the protobuf include path, on the other hand, would be added with {{-I}}. GCC and for compatibility clang first search all paths specified with {{-I}} left-to-right before looking at paths given with {{-isystem}}, see [the GCC documenation|https://gcc.gnu.org/onlinedocs/gcc/Directory-Options.html].



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