Date: Mon, 25 May 2015 11:13:50 +0200 From: Tijl Coosemans <tijl@FreeBSD.org> To: Mathieu Arnold <mat@FreeBSD.org> Cc: Jan Beich <jbeich@FreeBSD.org>, ports-committers@freebsd.org, svn-ports-all@freebsd.org, svn-ports-head@freebsd.org Subject: Re: svn commit: r387283 - head/devel/sdl20 Message-ID: <20150525111350.5df15450@kalimero.tijl.coosemans.org> In-Reply-To: <7442044CBA8EBE7D282ECE9F@atuin.in.mat.cc> References: <201505241648.t4OGmf2K096837@svn.freebsd.org> <7frx-7t2s-wny@vfemail.net> <20150525103725.240723c2@kalimero.tijl.coosemans.org> <7442044CBA8EBE7D282ECE9F@atuin.in.mat.cc>
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On Mon, 25 May 2015 10:51:29 +0200 Mathieu Arnold <mat@FreeBSD.org> wrote:
> +--On 25 mai 2015 10:37:25 +0200 Tijl Coosemans <tijl@FreeBSD.org> wrote:
> | On Sun, 24 May 2015 20:01:47 +0200 Jan Beich <jbeich@FreeBSD.org> wrote:
> |> Tijl Coosemans <tijl@FreeBSD.org> writes:
> |>> +.if defined(MACHINE_CPU) && ${MACHINE_CPU:Mmmx}
> |>> +CONFIGURE_ARGS+= --enable-mmx
> |>> +.else
> |>> +CONFIGURE_ARGS+= --disable-mmx
> |>> +.endif
> |>
> |> Why not use smth like the following instead ?
> |>
> |> OPTIONS_DEFAULT_i386= ${MACHINE_CPU:tu:MMMX}
> |
> | Because an option doesn't make much sense for CPU features. Either
> | the target CPU supports MMX or it doesn't. It's not a user choice.
>
> Well, yes and no, I'm building packages on a:
>
> CPU: Intel(R) Xeon(R) CPU E5-2430L 0 @ 2.00GHz (2000.04-MHz K8-class CPU)
> Origin = "GenuineIntel" Id = 0x206d7 Family = 0x6 Model = 0x2d
> Stepping = 7
>
> Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
>
> Features2=0x1fbee3ff<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,DCA,SSE4.1,SSE4.2,x2APIC,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,AVX>
> AMD Features=0x2c100800<SYSCALL,NX,Page1GB,RDTSCP,LM>
> AMD Features2=0x1<LAHF>
> VT-x: PAT,HLT,MTF,PAUSE,EPT,UG,VPID
> TSC: P-state invariant, performance statistics
>
> but my i386 packages have to work on a
>
> CPU: Geode(TM) Integrated Processor by AMD PCS (498.05-MHz 586-class CPU)
> Origin = "AuthenticAMD" Id = 0x5a2 Stepping = 2
> Features=0x88a93d<FPU,DE,PSE,TSC,MSR,CX8,SEP,PGE,CMOV,CLFLUSH,MMX>
> AMD Features=0xc0400000<MMX+,3DNow!+,3DNow!>
>
>
> True, they all support MMX instructions, but I'd say it's more by chance
> than anything else :-)
MACHINE_CPU is defined in /usr/share/mk/bsd.cpu.mk based on CPUTYPE
which you can set in make.conf. The host CPU doesn't matter.
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