[MacPorts] #42291: llvm-3.4: error: invalid version number in '-mmacosx-version-min='

[MacPorts]

#42291: llvm-3.4: error: invalid version number in '-mmacosx-version-min='
-------------------------------+------------------------
  Reporter:  david.w.watson@…  |      Owner:  jeremyhu@…
      Type:  defect            |     Status:  closed
  Priority:  Normal            |  Milestone:
 Component:  ports             |    Version:  2.2.1
Resolution:  invalid           |   Keywords:
      Port:  llvm-3.4          |
-------------------------------+------------------------
Changes (by ryandesign@…):

 * status:  new => closed
 * resolution:   => invalid


Comment:

 Makefile.rules runs this code on Darwin:

 {{{
   # Strip a number like 10.4.7 to 10.4
   DARWIN_VERSION := $(shell echo $(DARWIN_VERSION)| sed -E
 's/(10.[0-9]+).*/\1/')
   # Get "4" out of 10.4 for later pieces in the makefile.
   DARWIN_MAJVERS := $(shell echo $(DARWIN_VERSION)| sed -E
 's/10.([0-9]+).*/\1/')
 }}}

 By using the `-E` flag, this code assumes that `sed` is BSD sed; this is a
 reasonable assumption on Darwin, and making `sed` be (or be a symlink to)
 `gsed` will break this. So if `sed` is (or is a symlink to) `gsed` on your
 system, please remove that. If you want to be able to run `gsed` by typing
 `sed`, the way we intend for you to be able to do that is for you to add
 /opt/macports/libexec/gnubin to your shell $PATH variable; this won't
 adversely affect port builds.

-- 
Ticket URL: <https://trac.macports.org/ticket/42291#comment:5>
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