README: document that sccache is incompatible with /Zi with MSVC #963
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glandium
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Mar 10, 2021
README.md
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| @@ -108,6 +108,21 @@ To use sccache with cmake, provide the following command line arguments to cmake | |||
| -DCMAKE_CXX_COMPILER_LAUNCHER=sccache | |||
| ``` | |||
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| To generate PDB files for debugging with MSVC, only the [`/Z7` option](https://docs.microsoft.com/en-us/cpp/build/reference/z7-zi-zi-debug-information-format?view=msvc-160) works with sccache; the PDB files generated with the `/Zi` and `/ZI` options cannot be cached. Note that CMake sets `/Zi` by default, so if you use CMake, you will need something like this in your CMakeLists.txt: | |||
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That is not entirely true. /Zi is supported if you also use /Fd with a different pdb name for each object file you create.
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Thank you for correcting that. I'll update the documentation.
expipiplus1
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Nov 21, 2023
This seems like an option better set externally by the user if they desire separate debug info Furthermore, this prevents building miniz with sccache enabled, see mozilla/sccache#963
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This is not obvious and difficult to figure out for users not very familiar with MSVC.