[MacPorts] #44503: DSDP: Build with Apple's Accelerator.framework by default

[MacPorts]

#44503: DSDP: Build with Apple's Accelerator.framework by default
----------------------------+--------------------------------
 Reporter:  mark.brethen@…  |      Owner:  macports-tickets@…
     Type:  enhancement     |     Status:  new
 Priority:  Normal          |  Milestone:
Component:  ports           |    Version:  2.3.1
 Keywords:                  |       Port:  DSDP
----------------------------+--------------------------------
 Port py-cvxopt uses optional solvers, one of which is DSDP, uses atlas'
 blas and lapack. Both py-cvxopt and py-numpy build with Apple's
 Accelerator.framework by default. DSDP however builds with macports'
 atlas. This breaks the install.

 I was able to build DSDP with Apple's Accelerate.framework by patching
 'make.include' at this line:

 {{{
 #!div style="font-size: 80%"
 Code highlighting:
   {{{#!c++
 -LAPACKBLAS  = -llapack -lblas -lg2c -lm
 +LAPACKBLAS  = -Wl,-framework -Wl,Accelerate -lm
   }}}
 }}}

 and tested that it works with the following python program:

 {{{
 #!div style="font-size: 80%"
 Code highlighting:
   {{{#!python
 from cvxopt.base import matrix,spmatrix
 from cvxopt import solvers

 clst=[0.0, 0.0, 0.0, 0.0, 0.0, 2.0, 2.0, 2.0]
 hlst=[0.0, 0.0, 0.0, 0.0, 0.0, 0.0,
      0.0, 0.0, 0.0, 0.0, 0.0, 0.0,
      0.0, 0.0, 0.0, 0.0, 0.0, 0.0,
      0.0, 0.0, 0.0, 0.0, 0.0, 0.0,
      0.0, 0.0, 0.0, 0.0, 0.0, 0.0,
      0.0, 0.0, 0.0, 0.0, 0.0, -1.0]
 Gr=[0, 7, 14, 21, 28, 1, 5, 8]+[35]*5
 Gc=[0, 1, 2, 3, 4, 5, 6, 7]+range(5)
 Gmtr=spmatrix([1.0]*8+[-1.0]*5,Gr,Gc,(36,8))
 c=-matrix(clst)
 Gs=[-Gmtr]
 h=[-matrix(hlst,(6,6))]
 try:
  sol=solvers.sdp(c,Gs=Gs,hs=h,solver='dsdp')
  print 'optimal value: %.2f'%(1+(matrix(clst,(1,8))*sol['x'])[0],)
 except:
  print 'could not use dsdp'
  sol=solvers.sdp(c,Gs=Gs,hs=h)
  print 'optimal value: %.2f'%(1+(matrix(clst,(1,8))*sol['x'])[0],)
  raise
   }}}
 }}}

 For consistency, DSDP should build with the accelerator.framework by
 default, with a variant to build using macports' atlas port. The patch I
 applied conflicts with the existing patch, so a decision needs to made how
 best to implement either patch.

-- 
Ticket URL: <https://trac.macports.org/ticket/44503>
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