Date: Tue, 28 Aug 2007 01:54:58 -0500 From: "Scot Hetzel" <swhetzel@gmail.com> To: FreeBSD-CURRENT <freebsd-current@freebsd.org> Subject: Setting CPUTYPE=native, fails to set MACHINE_CPU correctly. Message-ID: <790a9fff0708272354q31afca4fx1e787f9592a6a4e0@mail.gmail.com>
next in thread | raw e-mail | index | archive | help
[-- Attachment #1 --] Gcc 4.2 has a new cpu_type (native) for x86 and amd64 systems. This cpu_type is to allow gcc to automatically detect the processor type that gcc is running on. The problem is that setting CPUTYPE?=native in either src.conf or make.conf will cause MACHINE_CPU to be set to the wrong value for the native cpu. For example on a system where the processor is a k8, setting CPUTYPE to k8, shows that MACHINE_CPU is set as follows: hp010# make -V MACHINE_CPU -DCPUTYPE=k8 k8 3dnow amd64 sse2 sse mmx But setting CPUTYPE to native on a k8 system sets MACHINE_CPU to this value: hp010# make -V MACHINE_CPU -DCPUTYPE=native unknown amd64 sse2 sse mmx After patching share/mk/bsd.cpu.mk (see attachment) or the last patch to PR 112997: http://www.freebsd.org/cgi/query-pr.cgi?pr=112997 setting CPUTYPE to native now works correctly when setting the value for MACHINE_CPU: hp010# make -V MACHINE_CPU -V CPUTYPE -DCPUTYPE=native k8 3dnow amd64 sse2 sse mmx k8 Could this get committed before -CURRENT is branched. Thanks, Scot -- DISCLAIMER: No electrons were mamed while sending this message. Only slightly bruised. [-- Attachment #2 --] Index: share/mk/bsd.cpu.mk =================================================================== RCS file: /home/ncvs/src/share/mk/bsd.cpu.mk,v retrieving revision 1.62 diff -u -r1.62 bsd.cpu.mk --- share/mk/bsd.cpu.mk 21 May 2007 08:39:44 -0000 1.62 +++ share/mk/bsd.cpu.mk 28 Aug 2007 05:50:09 -0000 @@ -18,6 +18,14 @@ . endif .else +# Handle 'native' by converting it to the appropriate CPUTYPE + +.if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "amd64" +. if ${CPUTYPE} == "native" +CPUTYPE != gcc -v -x c -E -mtune=native /dev/null -o /dev/null 2>&1 | grep mtune | sed -e 's/.*mtune=//' +. endif +.endif + # Handle aliases (not documented in make.conf to avoid user confusion # between e.g. i586 and pentium)
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?790a9fff0708272354q31afca4fx1e787f9592a6a4e0>