Core2 Q9550 Supports sse4.1, not sse4.2--how to not build sse4.2?

asked 2019-04-18 01:56:39 +0000

dlcusa
1 ●2 ●1

Building 2.6.6 for Core2 Q9550, CRUX (Linux) 3.4 with CFLAGS including -msse4.1 and -mno-sse4.2, configure tests "whether we can add -msse4.2 to CFLAGS...", concludes yes; then fails trying to build ws_mempbrk_sse42.c. How can I convince wireshark not to use -msse4.2?

answered 2019-04-18 13:31:49 +0000

dlcusa
1 ●2 ●1

Okay, I'll just do a Q&D fix. But autoconfig really should either honor the environment's CFLAGS or provide an option for building with/without sse4.2 support, rather than basing the decision upon whether or not the compiler supports sse4.2.

edit flag offensive delete link

Comments

autoconfig has been dropped in newer versions for CMake. I've no idea if CMake will do a better job for your system.

grahamb ( 2019-04-18 13:41:15 +0000 )edit

It's a fringe case, anyway. I'm sure at run-time it does not attempt to execute sse4.2 instructions on Intel boxen without the feature. Most folks are happy to let it build it if it can compile it.

dlcusa ( 2019-04-18 14:35:06 +0000 )edit

add a comment

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Core2 Q9550 Supports sse4.1, not sse4.2--how to not build sse4.2?

1 Answer

Comments

Your Answer

Question Tools

Stats

Core2 Q9550 Supports sse4.1, not sse4.2--how to not build sse4.2? edit

1 Answer

Comments

Your Answer

Question Tools

Stats

Core2 Q9550 Supports sse4.1, not sse4.2--how to not build sse4.2?