[MacPorts] #39089: openmpi @1.7.1: Cannot determine global symbol label prefix during configure

[MacPorts]

#39089: openmpi @1.7.1: Cannot determine global symbol label prefix during
configure
------------------------------+-------------------
  Reporter:  Peter.Danecek@…  |      Owner:  mww@…
      Type:  defect           |     Status:  new
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:
Resolution:                   |   Keywords:
      Port:  openmpi          |
------------------------------+-------------------

Comment (by jdgleeson@…):

 Fixes to this problem were discussed here: http://www.open-
 mpi.org/community/lists/devel/2011/01/8923.php

 Either add `-xassembler` for Apple gcc-4.0, or use Apple gcc-4.2:

 The assembler code...
 {{{
 $ cat conftest.s
 .text
 # _gsym_test_func
 .globl _gsym_test_func
 _gsym_test_func:
 # _gsym_test_func
 }}}

 Failure during configuration...
 {{{
 $ /usr/bin/gcc-4.0 -std=gnu99  -DNDEBUG -pipe -O2 -arch ppc -finline-
 functions -fno-strict-aliasing -c conftest.s
 conftest.s:2:3: error: invalid preprocessing directive #_gsym_test_func
 conftest.s:5:3: error: invalid preprocessing directive #_gsym_test_func
 }}}

 gcc-4.0 with `-xassembler` produces no output (the desired result)...
 {{{
 $ /usr/bin/gcc-4.0 -std=gnu99  -DNDEBUG -pipe -O2 -arch ppc -finline-
 functions -fno-strict-aliasing -xassembler -c conftest.s
 }}}

 gcc-4.2 produces no output (the desired result)...
 {{{
 $ /usr/bin/gcc-4.2 -std=gnu99  -DNDEBUG -pipe -O2 -arch ppc -finline-
 functions -fno-strict-aliasing -c conftest.s
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/39089#comment:3>
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