[MacPorts] #46392: gfortran-mp-4.[89] internal compiler error when building scipy-0.14.1 on a PPC

[MacPorts]

#46392: gfortran-mp-4.[89] internal compiler error when building scipy-0.14.1 on a
PPC
--------------------------+----------------------------------
  Reporter:  drjesacco@…  |      Owner:  sean@…
      Type:  defect       |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.3.3
Resolution:               |   Keywords:  PPC, scipy, gfortran
      Port:  py-numpy     |
--------------------------+----------------------------------
Changes (by sean@…):

 * owner:  macports-tickets@… => sean@…
 * status:  new => assigned
 * port:  gcc48, gcc49 => py-numpy


Old description:

> System: dual G4 powerMac running OS X 10.5.8
>
> gfortran-mp-4.[89] fails to compile scipy/fftpack/src/fftpack/cfftb1.f
> when optimization is set to '-O3'. Reducing the optimization level to
> '-O2' allows the compilation to succeed.  The attached file contains the
> relevant portion of the build log and a copy of cfftb1.f.
>
> py(27|34)-scipy-0.14.0 built without incident with an earlier version of
> gcc-mp-4.8.
>
> A quick workaround to get scipy to build is to modify the numpy file that
> sets the optimization level for the fortran compiler.
>
> --- site-packages/numpy/distutils/fcompiler/gnu.py-     2015-01-04
> 12:14:16.000000000 -0500
> +++ site-packages/numpy/distutils/fcompiler/gnu.py      2015-01-04
> 12:14:29.000000000 -0500
> @@ -200,7 +200,7 @@
>              # with -O3 caused failures in lib.lapack heevr,syevr tests.
>              opt = ['-O2']
>          else:
> -            opt = ['-O3']
> +            opt = ['-O2']
>          opt.append('-funroll-loops')
>          return opt

New description:

 System: dual G4 powerMac running OS X 10.5.8

 gfortran-mp-4.[89] fails to compile scipy/fftpack/src/fftpack/cfftb1.f
 when optimization is set to '-O3'. Reducing the optimization level to
 '-O2' allows the compilation to succeed.  The attached file contains the
 relevant portion of the build log and a copy of cfftb1.f.

 py(27|34)-scipy-0.14.0 built without incident with an earlier version of
 gcc-mp-4.8.

 A quick workaround to get scipy to build is to modify the numpy file that
 sets the optimization level for the fortran compiler.

 {{{
 --- site-packages/numpy/distutils/fcompiler/gnu.py-     2015-01-04
 12:14:16.000000000 -0500
 +++ site-packages/numpy/distutils/fcompiler/gnu.py      2015-01-04
 12:14:29.000000000 -0500
 @@ -200,7 +200,7 @@
              # with -O3 caused failures in lib.lapack heevr,syevr tests.
              opt = ['-O2']
          else:
 -            opt = ['-O3']
 +            opt = ['-O2']
          opt.append('-funroll-loops')
          return opt
 }}}

--

Comment:

 This is a patch that needs to be applied to numpy, correct?

-- 
Ticket URL: <https://trac.macports.org/ticket/46392#comment:1>
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