[Bug 1274430] [NEW] Regression in 2.8.12.1-1ubuntu3/4: export CXX stopped working

[Martin Pitt]

Public bug reported:

While debugging the platform-api sensor failure in
https://code.launchpad.net/~thomas-voss/platform-
api/expose_accuracy_and_service_status_to_platform/+merge/203298 I
noticed that the crucial difference was that in that MP platform-api
suddenly got built with g++4.8 although debian/rules says

  export CXX=g++-4.7

(Likewise with CC=gcc-4.7, but platform-api doesn't use that).

It seems the recent cmake changes broke this. Surprisingly, this still
works as intended:

  mkdir obj
  cd obj
  CXX=g++-4.7 cmake ..

but not in the way dh_auto_* handle that.

** Affects: cmake (Ubuntu)
     Importance: Critical
     Assignee: Dimitri John Ledkov (xnox)
         Status: Triaged

** Changed in: cmake (Ubuntu)
     Assignee: (unassigned) => Dimitri John Ledkov (xnox)

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https://bugs.launchpad.net/bugs/1274430

Title:
  Regression in 2.8.12.1-1ubuntu3/4: export CXX stopped working

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