Bug 101774

Summary: gen_clflush.h:37:7: error: implicit declaration of function ‘__builtin_ia32_clflush’
Product: Mesa Reporter: Fabio Pedretti <pedretti.fabio>
Component: Drivers/DRI/i965Assignee: Matt Turner <mattst88>
Status: RESOLVED FIXED QA Contact: Intel 3D Bugs Mailing List <intel-3d-bugs>
Severity: normal    
Priority: medium CC: kenneth, mattst88, paulo.miguel.dias
Version: git   
Hardware: x86 (IA32)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments: patch

Description Fabio Pedretti 2017-07-13 07:10:02 UTC 
Since yesterday building mesa on a 32 bit system gives this error:
../../../../../../../src/intel/common/gen_clflush.h:37:7: error: implicit declaration of function ‘__builtin_ia32_clflush’ [-Werror=implicit-function-declaration]

Full log here:
https://launchpadlibrarian.net/328564504/buildlog_ubuntu-yakkety-i386.mesa_17.2~git1707130730.c3b5c2~gd~y_BUILDING.txt.gz

Builds OK on 64 bit systems.
Comment 1 Matt Turner 2017-07-13 18:47:26 UTC 
*** Bug 101786 has been marked as a duplicate of this bug. ***
Comment 2 Matt Turner 2017-07-13 18:48:29 UTC 
Created attachment 132673 [details] [review]
patch

I'm not sure if -msse3 will enable clflush, but let's give it a try.
Comment 3 Kenneth Graunke 2017-07-13 20:16:18 UTC 
According to https://gcc.gnu.org/onlinedocs/gcc-4.8.5/gcc/X86-Built-in-Functions.html we need -msse2
Comment 4 Matt Turner 2017-07-14 19:39:51 UTC 
Patch now on the list
Comment 5 Matt Turner 2017-07-14 23:55:21 UTC 
Pushed as

commit 6b05c080f202c25531f59b547d5e6ba339cedd09
Author: Matt Turner <mattst88@gmail.com>
Date:   Thu Jul 6 21:31:05 2017 -0700

    i965: Compile with -msse3

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