[MacPorts] #57039: glib2 @2.56.2: build fails due to Tiger "which" command

[MacPorts]

#57039: glib2 @2.56.2: build fails due to Tiger "which" command
---------------------------------+------------------------
  Reporter:  xstnztk             |      Owner:  ryandesign
      Type:  defect              |     Status:  accepted
  Priority:  Normal              |  Milestone:
 Component:  ports               |    Version:  2.5.3
Resolution:                      |   Keywords:  tiger
      Port:  glib2, glib2-devel  |
---------------------------------+------------------------

Comment (by xstnztk):

 Find attached a patch which allowed me to successfully build glib2 on
 Tiger. I not only replaced the `which` command but also cleaned up the
 code a bit because the two checks for the presence of gtkdocize and for
 autoreconf were different for no good reason. The latter also served as a
 test that `command -v` worked as expected for commands which are present.

 This is the first patch I ever made for MacPorts, so please let me know if
 there are any problems with it. If you accept it, I will try to get it
 included upstream.

-- 
Ticket URL: <https://trac.macports.org/ticket/57039#comment:8>
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