INSTALL: Provide better documentation for enable-ec_nistp_64_gcc_128

Reviewed-by: Andy Polyakov <appro@openssl.org> (Merged from https://github.com/openssl/openssl/pull/6328)
2018-05-22 23:09:01 +02:00 · 2018-05-22 23:09:01 +02:00 · b501ab6bee
commit b501ab6bee
parent 8cc1dc3632
1 changed files with 7 additions and 2 deletions
--- a/9
+++ b/9
@ -336,8 +336,13 @@

  enable-ec_nistp_64_gcc_128
                   Enable support for optimised implementations of some commonly
-                   used NIST elliptic curves. This is only supported on some
-                   platforms.
+                   used NIST elliptic curves.
+                   This is only supported on platforms:
+                   - with little-endian storage of non-byte types
+                   - that tolerate misaligned memory references
+                   - where the compiler:
+                     - supports the non-standard type __uint128_t
+                     - defines the built-in macro __SIZEOF_INT128__

  enable-egd
                   Build support for gathering entropy from EGD (Entropy