Satish Balay df45b6f56d Balay/petsc remove boost dependency (#8508) ... * petsc: remove dependency on boost - its required only as a dependency on trilinos Also set COPTFLAGS='' etc - this way CFLAGS is the primary way optimization flags are set by spack * petsc: update pkgs with petsc~boost dependency * fix flake8 * boost is optional for trilinos - so adjust petsc dependency on boost [via trilinos] accordingly * do not add boost dependency on petsc [due to trilinos requirement]. Trilinos adds this dependency anyway.		2018-06-24 10:52:14 -05:00
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spack	Balay/petsc remove boost dependency (#8508)	2018-06-24 10:52:14 -05:00