OpenBLAS fails for missing _cpuid_count

[rmottola (Riccardo)]

On Leopard i386, OpenBLAS fails to compile, failure:

--->  Building OpenBLAS
Executing:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_math_OpenBLAS/OpenBLAS/work/OpenBLAS-0.3.5" && /usr/bin/make -j2 -w all AR=/opt/local/bin/ar RANLIB=/opt/local/bin/ranlib 
Undefined symbols for architecture i386:
  "_cpuid_count", referenced from:
      _get_cacheinfo in getarch-04fdc3.o
ld: symbol(s) not found for architecture i386

[ryandesign (Ryan Carsten Schmidt)]

Indeed, leopard is too old to have _cpuid_count built in. It could be added with a patch, as was done previously for other ports, like php in [d242053632fa2c95c0b88e3ddeef744d32236093/macports-ports].

Or maybe our legacy support port now offers (or could be changed to offer) this.

[kencu (Ken)]

show us the whole log, I think, Riccardo. Maybe it's just a gcc thing, and you could get the port to build with clang. I don't see cpuid_count anywhere in my headers, but OpenBLAS builds fine for me on 10.6.8 with clang-5.0.

[kencu (Ken)]

There are a bunch of implementations of cpuid_count in cpuid_x86.c --- maybe we just have to make one of them activate.

[michaelld (Michael Dickens)]

I don't have an OSX 10.5 Intel boot drive up and running yet to test / verify. Hopefully Ken can handle this one.

[rmottola (Riccardo)]

@Ken - I jusst tried building with clang 3.9 and 5.0 yet I get the same error. I attach the build log (after clean). I am on i386 and 10.5, maybe you have amd64 ?

[kencu (Ken)]

please try this:

diff --git cpuid_x86.c cpuid_x86.c
index eb986b6..63c5270 100644
--- cpuid_x86.c
+++ cpuid_x86.c
@@ -87,7 +87,7 @@ void cpuid_count(int op, int count, int *eax, int *ebx, int *ecx, int *edx)
 
 #ifndef CPUIDEMU
 
-#if defined(__APPLE__) && defined(__i386__)
+#if defined(__APPLE__) && defined(__i386__) && (__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ > 1060)
 void cpuid(int op, int *eax, int *ebx, int *ecx, int *edx);
 void cpuid_count(int op, int count, int *eax, int *ebx, int *ecx, int *edx);
 #else

[kencu (Ken)]

hmm. that goes a long way, but eventually fails for me with another different error in the fortran code. Somehow, don't know how or why yet, lapack-netlib is thinking it's on a MIPS machine and enables a MIPS-specific abi call that fails. I am not yet sure why that happens, but in the end, just edited by hand lapack-netlib/make.inc and removed the offending -mabi=n32 option, and on it goes again.

[kencu (Ken)]

the automatic ARCH detection seems to be failing on Intel Leopard. I don't know why yet, but forcing it in the Portfile with:

 puts $makeINC "ARCH=x86"

works:

$ port -v installed openblas
The following ports are currently installed:
  OpenBLAS @0.3.5_1+gcc7+lapack (active) platform='darwin 9' archs='i386' date='2019-04-06T16:17:08-0700'

Needs a bit more cleaning up -- either figure out and fix the ARCH detection, or alternatively figure out and force it correctly in the Portfile.

Also, Leopard's python was too old, so I spec'd current pythons with sudo port select for all the pythons.

[jmroot (Joshua Root)]

Not Leopard-specific, fails the same way on 10.6 i386: ​https://build.macports.org/builders/ports-10.6_i386_legacy-builder/builds/61698/steps/install-port/logs/stdio

[kencu (Ken)]

that's a helpful clue, thank you.

[michaelld (Michael Dickens)]

I'll try building on my 10.6 boot drive ... maybe today if my builds get there ... but certainly this week (if Ken doesn't fix it first LOL)

[kencu (Ken)]

FYI OpenBlAS 64bit installs without intervention on my 10.6.8 box:

OpenBLAS @0.3.5_1+gcc6+lapack (active) platform='darwin 10' archs='x86_64' date='2019-01-29T23:39:19-0800'

So this is smelling like perhaps an Intel 32bit issue...

[rmottola (Riccardo)]

Indeed, I have OpenBLAS installed on 10.6.8 64bit and did not even notice. So it seems indeed a 32bit issue more than an OS version issue.

[kencu (Ken)]

i believe I have this fixed. Just sorting the last bits.

[kencu (Ken)]

In bd10d11a93fdd3e94d2e34b5dbe6860b7de0ad4e/macports-ports (master):

OpenBLAS: enable build on Apple i386

closes: #58263