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

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

dlcusa
1 ●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 ●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.

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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

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

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

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