[MacPorts] #56318: Base should know the installed version of the command line tools

[MacPorts]

#56318: Base should know the installed version of the command line tools
-------------------------+--------------------
 Reporter:  ryandesign   |      Owner:  (none)
     Type:  enhancement  |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  base         |    Version:
 Keywords:               |       Port:
-------------------------+--------------------
 Just as MacPorts already knows the version of Xcode (in the `xcodeversion`
 variable), it should know the version of the command line tools. This
 could then be [ticket:52575 printed in the log] and verified by the
 configure script as the Xcode version already is.

 Per [https://apple.stackexchange.com/questions/180957/determine-xcode-
 command-line-tools-version this post], this information can be obtained on
 Mavericks or later using:

 {{{
 pkgutil --pkg-info=com.apple.pkg.CLTools_Executables
 }}}

 e.g.:

 {{{
 $ pkgutil --pkg-info=com.apple.pkg.CLTools_Executables
 package-id: com.apple.pkg.CLTools_Executables
 version: 9.2.0.0.1.1510905681
 volume: /
 location: /
 install-time: 1514035707
 groups: com.apple.FindSystemFiles.pkg-group
 }}}

 ----

 On Lion and Mountain Lion, it's:

 {{{
 pkgutil --pkg-info=com.apple.pkg.DeveloperToolsCLI
 }}}

 e.g.:

 {{{
 $ pkgutil --pkg-info=com.apple.pkg.DeveloperToolsCLI
 package-id: com.apple.pkg.DeveloperToolsCLI
 version: 5.1.0.0.1.1396320587
 volume: /
 location: /
 install-time: 1467560350
 }}}

 ----

 On Leopard and Snow Leopard, it appears to be:

 {{{
 pkgutil --pkg-info=com.apple.pkg.DeveloperToolsCLILeo
 }}}

 e.g.:

 {{{
 $ pkgutil --pkg-info=com.apple.pkg.DeveloperToolsCLILeo
 package-id: com.apple.pkg.DeveloperToolsCLILeo
 version: 1.0.0.9000000000.1.1248867338
 volume: /
 location: /
 install-time: 1470134505
 }}}

 ----

 I haven't checked Tiger.

-- 
Ticket URL: <https://trac.macports.org/ticket/56318>
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