Honor OPENSSL_NO_OCB if OpenSSL was built this way#1952
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alex merged 1 commit intorust-openssl:masterfrom Jun 4, 2023
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Honor OPENSSL_NO_OCB if OpenSSL was built this way#1952alex merged 1 commit intorust-openssl:masterfrom
alex merged 1 commit intorust-openssl:masterfrom
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Setting ossl110 in the BoringSSL build (see rust-openssl#1944) causes rust-openssl to expect OCB support. However, OpenSSL already has a feature guard for OCB, which BoringSSL sets. rust-openssl just isn't honoring it. This fixes building against an OpenSSL built with ./config no-ocb
alex
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Sep 10, 2025
- If OpenSSL is built with the `OPENSSL_NO_OCB` directive it will
not have OCB.
- Stop advertising OCB as supported in that case.
- Use GCM as the default algorithm if OCB is not available.
- Tested by appending `println!("cargo:rustc-cfg=osslconf=\"{}\"",
"OPENSSL_NO_OCB");` to build.rs.
- See rust-openssl/rust-openssl#1952
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Setting ossl110 in the BoringSSL build (see #1944) causes rust-openssl to expect OCB support. However, OpenSSL already has a feature guard for OCB, which BoringSSL sets. rust-openssl just isn't honoring it.
This fixes building against an OpenSSL built with ./config no-ocb