Add -fno-lto for GCC and compatibles
Jeffrey Walton <[email protected]>
| Newsgroups | gmane.comp.encryption.cryptopp |
|---|---|
| Message-ID | <CAH8yC8nJERS3-Y4KNZfz15fu9PJDJpE+ZM-KmV7RcMv-oTth8w@mail.gmail.com> |
Hi Everyone, LTO is slowly accumulating bugs. From what I have seen in the post-mortems, it looks like LTO is either (1) results in a compile error (older compilers) or (2) results in a runtime error (newer compilers). For (2), it appears LTO mishandles code with GCC extended inline assembly. To build the library with LTO, you have to use -DCRYPTOPP_DISABLE_ASM. That gets us past the self tests but causes a slowdown in the library. Worse, most users and distros are not aware of the LTO problems so the library gets built with it but without -DCRYPTOPP_DISABLE_ASM. I think we should add -fno-lto when GCC and compatibles support it. What do you think? Jeff -- You received this message because you are subscribed to the Google Groups "Crypto++ Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/cryptopp-users/CAH8yC8nJERS3-Y4KNZfz15fu9PJDJpE%2BZM-KmV7RcMv-oTth8w%40mail.gmail.com.