Build error: 'fmt::format_string’ has not been declared

[meitiever82]

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1. catkin build ikalibr

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[Unsigned-Long]

Your problem may be caused by the fact that both Sophus and Spdlog libraries rely on fmt. Specifically, when compiling Sophus, specify to use the internal logging library instead of fmt. We have already detailed this problem clearly in the environment configuration document of iKalibr. If this is the problem, please refer to the document (the key points part of Install Required Third Libraries section).

" both spdlog and Sophus would involve the fmt library, and would lead to conflict if the versions of involved fmt in spdlog and Sophus are different. To solve this, we recommend that you set the cmake option SOPHUS_USE_BASIC_LOGGING as ON when compile Sophus, this would avoid to involve fmt logger dependency in Sophus."