qmake: NDEBUG macro always added, regardless of configuration

qmake always wants to add NDEBUG to the DEFINES var. With another version (e.g. 5.12.6) this does not happen.

This can be tested by opening a "Native Tools Command Prompt for VS" and pasting the following:

ECHO CONFIG -= debug release debug_and_release > foo.pro&
ECHO CONFIG += (Config) no_fixpath >> foo.pro&
ECHO QT += core >> foo.pro&
(Path to Qt)\bin\qmake&
TYPE Makefile | FINDSTR /B "DEFINES" 2> NUL&
DEL foo.pro Makefile

E.g.:

5.13.2 - Debug

• Command:

  ECHO CONFIG -= debug release debug_and_release > foo.pro&
  ECHO CONFIG += debug no_fixpath >> foo.pro&
  ECHO QT += core >> foo.pro&
  \qt\5.13.2\msvc2017_64\bin\qmake&
  TYPE Makefile | FINDSTR /B "DEFINES" 2> NUL&
  DEL foo.pro Makefile

• Output:

  DEFINES = -DUNICODE -D_UNICODE -DWIN32 -D_ENABLE_EXTENDED_ALIGNED_STORAGE -DWIN64 -DNDEBUG -DQT_GUI_LIB -DQT_CORE_LIB

5.13.2 - Release

• Command:

  ECHO CONFIG -= debug release debug_and_release > foo.pro&
  ECHO CONFIG += release no_fixpath >> foo.pro&
  ECHO QT += core >> foo.pro&
  \qt\5.13.2\msvc2017_64\bin\qmake&
  TYPE Makefile | FINDSTR /B "DEFINES" 2> NUL&
  DEL foo.pro Makefile

• Output:

  DEFINES = -DUNICODE -D_UNICODE -DWIN32 -D_ENABLE_EXTENDED_ALIGNED_STORAGE -DWIN64 -DNDEBUG -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_CORE_LIB

5.12.6 - Debug

• Command:

  ECHO CONFIG -= debug release debug_and_release > foo.pro&
  ECHO CONFIG += debug no_fixpath >> foo.pro&
  ECHO QT += core >> foo.pro&
  \qt\5.12.6\msvc2017_64\bin\qmake&
  TYPE Makefile | FINDSTR /B "DEFINES" 2> NUL&
  DEL foo.pro Makefile

• Output:

  DEFINES = -DUNICODE -D_UNICODE -DWIN32 -D_ENABLE_EXTENDED_ALIGNED_STORAGE -DWIN64 -DQT_GUI_LIB -DQT_CORE_LIB

5.12.6 - Release

• Command:

  ECHO CONFIG -= debug release debug_and_release > foo.pro&
  ECHO CONFIG += release no_fixpath >> foo.pro&
  ECHO QT += core >> foo.pro&
  \qt\5.12.6\msvc2017_64\bin\qmake&
  TYPE Makefile | FINDSTR /B "DEFINES" 2> NUL&
  DEL foo.pro Makefile

• Output:

  DEFINES = -DUNICODE -D_UNICODE -DWIN32 -D_ENABLE_EXTENDED_ALIGNED_STORAGE -DWIN64 -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_CORE_LIB -DNDEBUG