FreeBSD Bugzilla – Attachment 78559 Details for
Bug 112997
[bsd.cpu.mk] [patch] Add note about the 'native' mtune option
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[patch]
file.diff
file.diff (text/plain), 941 bytes, created by
Scot Hetzel
on 2007-05-25 16:20:02 UTC
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file.diff
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Creator:
Scot Hetzel
Created:
2007-05-25 16:20:02 UTC
Size:
941 bytes
patch
obsolete
>Index: make.conf >=================================================================== >RCS file: /home/ncvs/src/share/examples/etc/make.conf,v >retrieving revision 1.279 >diff -u -r1.279 make.conf >--- make.conf 17 Jan 2007 12:43:06 -0000 1.279 >+++ make.conf 25 May 2007 15:08:52 -0000 >@@ -40,6 +40,17 @@ > # AMD64 architecture: opteron, athlon64, nocona, prescott, core2 > # Intel ia64 architecture: itanium2, itanium > # >+# On the Intel x86 and AMD architectures, you can use gcc to determine >+# determine the processor type of the compiling machine by using the >+# following command: >+# >+# gcc -v -x c -E -mtune=native /dev/null -o /dev/null 2>&1 | grep mtune | sed -e 's/.*mtune=//' >+# >+# set CPUTYPE to the value returned for mtune. >+# >+# NOTE: DO NOT set CPUTYPE to 'native' in make.conf, as CPUTYPE is used to >+# set MACHINE_CPU in share/mk/bsd.cpu.mk. >+# > # (?= allows to buildworld for a different CPUTYPE.) > # > #CPUTYPE?=pentium3
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