[pyth_oracle] Improve build.rs robustness and expose types. #343
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jayantk
previously approved these changes
Apr 6, 2023
| println!("cargo:rustc-link-search=./program/c/target"); | ||
| // Cargo exposes ENV variables for feature flags that can be used to determine whether to do a | ||
| // self-contained build that compiles the C components automatically. | ||
| if std::env::var("CARGO_FEATURE_LIBRARY").is_ok() { |
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is there any reason not to do this for both build paths? this seems like a great simplification of the current build process.
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No reason, this is the correct way to do it. But I wasn't sure how many things would break and this was a safe small PR to get a review on. I can make it the default and check anywhere that might break / has been relying on relative paths. I just didn't plan to do it in this PR.
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Let's get this merged and I can make it the default
guibescos
approved these changes
Apr 10, 2023
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This PR adds a feature flag,
libraryto thepyth-oracleprogram. When toggled on, the library exposes its account types for use as a library instead of a standalone program. When the flag is enabled, thebuild.rsscript will also switch to execute the C compilation as well. The artefacts are output within the Rust target sandbox rather than into the relative source directory (./program/c/target).The benefit of this:
Rather than fully switch to this, the feature flag is added so any existing reliance on the current build method continues to work. The primary reason I wanted this is because I am relying on
pyth-sdk-rsand I found it very hard to tell exactly what is different there versus the accounts defined within the contract. With this feature flag it is possible for me to enforce extra constraints inpyth-sdk-rsthat prevent the libraries going out of sync and highlights the differences in a testable way.See the associated PR for context.