openssl: remove most BoringSSL #ifdefs. #640
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I've tested this against BoringSSL and OpenSSL 1.0.2.
make test
passes against both on my machine. I'm happy to be more or less aggressive in removing the #ifdefs as you prefer.Notably, I can see an argument to keep the RAND seeding code out. See https://commondatastorage.googleapis.com/chromium-boringssl-docs/rand.h.html#Deprecated-functions for the various ridiculous tricks we do to no-op everyone's RAND seeding logic. :-) Your call.
As of https://boringssl-review.googlesource.com/#/c/6980/, almost all of BoringSSL #ifdefs in cURL should be unnecessary:
The only #ifdefs which remain are Curl_ossl_version and the #undefs to work around OpenSSL and wincrypt.h name conflicts. (BoringSSL leaves that to the consumer. The in-header workaround makes things sensitive to include order.)
This change errs on the side of removing conditionals despite many of the restored codepaths being no-ops. (BoringSSL generally adds no-op compatibility stubs when possible. OPENSSL_VERSION_NUMBER #ifdefs are bad enough!)