[MacPorts] #72025: lapack @3.12.1 build error: execv: Argument list too long

[MacPorts]

#72025: lapack @3.12.1 build error: execv: Argument list too long
---------------------------+--------------------------
  Reporter:  barracuda156  |      Owner:  Dave-Allured
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.10.5
Resolution:                |   Keywords:
      Port:  lapack        |
---------------------------+--------------------------

Comment (by Dave-Allured):

 Fails on this step (from 10.9 log):
 {{{
 Linking C shared library ../lib/liblapacke.dylib
 cd
 /opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_math_lapack/lapack/work/build/LAPACKE
 && /opt/local/bin/cmake -E cmake_link_script
 CMakeFiles/lapacke.dir/link.txt --verbose=ON
 clang: error: unable to execute command: posix_spawn failed: Argument list
 too long
 }}}
 The actual broken link command seems to be hidden inside cmake script in
 every log file, therefore can't show here.

 Same failure on MacPorts builders for 10.8_x86, 10.9_x86.  Curiously works
 for 10.7, also 10.10 and all greater.

 As discussed in Lapack 1105, this is an expected place to fail when
 gathering a large number of object files with full MacPorts build
 prefixes, all in a single link command.  It looks like this is due to the
 command line length limit on older OS's, as well as other factors.
 Possible solutions are referenced in Lapack 1105.

-- 
Ticket URL: <https://trac.macports.org/ticket/72025#comment:1>
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