gnutls won't build on Snow Leopard

Fri Jan 13 00:49:42 UTC 2017

From what I can find  https://en.wikipedia.org/wiki/Advanced_Vector_Extensions
the Core 2 Duo does _not_ support AVX (it's way too old - this machine was 2007).  CPU info (from sysctl):
hw.optional.floatingpoint: 1
hw.optional.mmx: 1
hw.optional.sse: 1
hw.optional.sse2: 1
hw.optional.sse3: 1
hw.optional.supplementalsse3: 1
hw.optional.sse4_1: 0
hw.optional.sse4_2: 0
hw.optional.x86_64: 1
hw.optional.aes: 0
machdep.cpu.max_basic: 10
machdep.cpu.max_ext: 2147483656
machdep.cpu.vendor: GenuineIntel
machdep.cpu.brand_string: Intel(R) Core(TM)2 CPU         T7200  @ 2.00GHz
machdep.cpu.family: 6
machdep.cpu.model: 15
machdep.cpu.extmodel: 0
machdep.cpu.extfamily: 0
machdep.cpu.stepping: 6
machdep.cpu.feature_bits: 3219913727 58301
machdep.cpu.extfeature_bits: 537921536 1
machdep.cpu.signature: 1782
machdep.cpu.brand: 0
machdep.cpu.features: FPU VME DE PSE TSC MSR PAE MCE CX8 APIC SEP MTRR PGE MCA CMOV PAT PSE36 CLFSH DS ACPI MMX FXSR SSE SSE2 SS HTT TM PBE SSE3 DTES64 MON DSCPL VMX EST TM2 SSSE3 CX16 TPR PDCM
machdep.cpu.extfeatures: SYSCALL XD EM64T LAHF
machdep.cpu.logical_per_package: 2
machdep.cpu.cores_per_package: 2
machdep.cpu.microcode_version: 199
machdep.cpu.mwait.linesize_min: 64
machdep.cpu.mwait.linesize_max: 64
machdep.cpu.mwait.extensions: 3
machdep.cpu.mwait.sub_Cstates: 139808
machdep.cpu.thermal.sensor: 1
machdep.cpu.thermal.dynamic_acceleration: 0
machdep.cpu.thermal.invariant_APIC_timer: 0
machdep.cpu.thermal.thresholds: 2
machdep.cpu.thermal.ACNT_MCNT: 1
machdep.cpu.thermal.core_power_limits: 0
machdep.cpu.thermal.fine_grain_clock_mod: 0
machdep.cpu.thermal.package_thermal_intr: 0
machdep.cpu.thermal.hardware_feedback: 0
machdep.cpu.thermal.energy_policy: 0
machdep.cpu.arch_perf.version: 2
machdep.cpu.arch_perf.number: 2
machdep.cpu.arch_perf.width: 40
machdep.cpu.arch_perf.events_number: 7
machdep.cpu.arch_perf.events: 0
machdep.cpu.arch_perf.fixed_number: 0
machdep.cpu.arch_perf.fixed_width: 0
machdep.cpu.cache.linesize: 64
machdep.cpu.cache.L2_associativity: 8
machdep.cpu.cache.size: 4096
machdep.cpu.tlb.inst.small: 128
machdep.cpu.tlb.inst.large: 8
machdep.cpu.tlb.data.small: 16
machdep.cpu.tlb.data.small_level1: 256
machdep.cpu.tlb.data.large: 16
machdep.cpu.tlb.data.large_level1: 32
machdep.cpu.address_bits.physical: 36
machdep.cpu.address_bits.virtual: 48
machdep.cpu.core_count: 2
machdep.cpu.thread_count: 2

It doesn't even have SSE4, so it wouldn't make sense that it had AVX.

So...how do I get it to run configure with the --disable-hardware-acceleration switch; do I have to edit the portfile, or is there something I can do from the command line?  The following does NOT work (looking at the log file shows that the added arg was NOT passed):
port upgrade gnutls configure.args-append=--disable-hardware-acceleration

Now maybe I could dig the full list of normal args out of the portfile, and pass configure.args="[whole list of args]" on the command line, but that's just as bad as editing the portfile, because I'd have to look at it each time.

I'm guessing that the AVX support in gnutls came in with the big version jump from the previous 3.4.17 to 3.5.8.  I think that for those with older hardware, it would be much friendlier if the portfile supported a variant to disable hardware acceleration.

> On Jan 12, 2017, at 06:56, Marius Schamschula <lists at schamschula.com> wrote:
> 
> Richard,
> 
> I checked on my Leopard box, and found that gnutls 3.5.8 properly built there. So, it seems that we have an issue unique to Snow Leopard.
> 
> There are two options:
> 
> 1) try to find a compiler other than Apple’s gcc that will properly deal with the AVX extensions
> 
> or
> 
> 2) use the —disable-hardware-acceleration switch
> 
>> On Jan 10, 2017, at 8:35 PM, Richard L. Hamilton <rlhamil at smart.net <mailto:rlhamil at smart.net>> wrote:
>> 
>> sh-3.2# uname -a
>> Darwin myeye.pri 10.8.0 Darwin Kernel Version 10.8.0: Tue Jun  7 16:33:36 PDT 2011; root:xnu-1504.15.3~1/RELEASE_I386 i386
>> sh-3.2# /usr/bin/gcc --version
>> i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5666) (dot 3)
>> Copyright (C) 2007 Free Software Foundation, Inc.
>> This is free software; see the source for copying conditions.  There is NO
>> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
>> 
>> 
>>> On Jan 10, 2017, at 19:53, Marius Schamschula <lists at schamschula.com <mailto:lists at schamschula.com>> wrote:
>>> 
>>> Richard,
>>> 
>>> Unfortunately, I have no way of testing under Snow Leopard, even though I test some builds under Leopard on a G5.
>>> 
>>> It is clear the build is not finding the AVX extensions on you mini. Given you have a Core2 Duo, the hardware is there.
>>> 
>>> Can you give me the result of
>>> 
>>> /usr/bin/gcc —version
>>> 
>>> 
>>>> On Jan 10, 2017, at 6:17 PM, Richard L. Hamilton <rlhamil at smart.net <mailto:rlhamil at smart.net>> wrote:
>>>> 
>>>> Hardware Version: Mac mini (Mid 2007)
>>>> Model Identifier: Macmini2,1
>>>> Mac OS X 10.6.8 10K549 (Snow Leopard)
>>>> Xcode 3.2.6 DevToolsSupport-1806.0
>>>> MacPorts Version: 2.3.5
>>>> 
>>>> <main.log-gnutls.txt.gz>
>>> 
>>> Marius
>>> --
>>> Marius Schamschula
>>> 
>>> 
>>> 
>>> 
>> 
> 
> Marius
> --
> Marius Schamschula
> 
> 
> 
> 

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