[Octave-bug-tracker] [bug #55282] QT_CPPFLAGS and QT_LDFLAGS command-line / environment vars ignored by configure

[Mike Miller]

Update of bug #55282 (project octave):

                Severity:              3 - Normal => 1 - Wish               
                Priority:              5 - Normal => 1 - Later              
                  Status:            Works For Me => Confirmed              
             Open/Closed:                  Closed => Open                   
        Operating System:                  Mac OS => Any                    
                 Summary: QT_CPPFLAGS and QT_LDFLAGS not always present when
needed => QT_CPPFLAGS and QT_LDFLAGS command-line / environment vars ignored
by configure

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Follow-up Comment #18:

I agree that is a good rephrasing of the issue, and agree that that does not
work. It also does not work for some other libraries used by Octave. It *does*
work for any library that we detect using the m4 macro OCTAVE_CHECK_LIB. It
does *not* work for FLTK_CPPFLAGS/LDFLAGS, MAGICK_CPPFLAGS/LDFLAGS,
LLVM_CPPFLAGS/LDFLAGS, and QT_CPPFLAGS/LDFLAGS, possibly some others.

To be specific, by way of example:


$ export MAGICK_CPPFLAGS=-I/usr/local/include/GraphicsMagick
$ ../configure MAGICK_CPPFLAGS=-I/usr/local/include/GraphicsMagick
[…]
$ grep ^MAGICK Makefile 
MAGICK_CPPFLAGS = -I/usr/include/GraphicsMagick
MAGICK_LDFLAGS = 
MAGICK_LIBS = -lGraphicsMagick++ -lGraphicsMagick


For any of these libraries, this can be easily worked around by using the
global CPPFLAGS and LDFLAGS user variables.

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