Re: qt5 pkgconfig woes

Hanspeter,

> On 19 Nov 2015, at 16:26, Hanspeter Niederstrasser <[email protected]> wrote:
> 
> On Thu, November 19, 2015 5:57 am, Max Horn wrote:
> 
[...]
> Better solution is to fix the .pc files to have the correct Cflags
> pointing to the correct headers dir

Maybe, but (a) I have no idea how the .pc files are created, so I would have to use sed or perl to change the files after installation, and (b) I am not sure that would be enough (see below):

> (otherwise packages will get stuck on
> expecting the symlink).

Not sure what you mean with that...? These are only build time requirements, used only by the preprocessor...?

> 
> How does Wireshark #include headers?  #include <QtCore/QtCore> or just
> <QtCore> ?

Wireshark uses the latter form. But Qt itself uses the former. Hence:

> 
> If I remember -I and -F usage correctly, "Cflags: -F/sw/lib/qt5-mac/lib"
> should be sufficient for <QtCore/Qtcore> instances.  For <QtCore> uses,
> it'll probably have to be appended with
> "-I/sw/lib/qt5-mac/lib/QtCore.framework/Headers" as well.

Since both uses occur, we'd have to do both.

Anyway, for the time being, I am working around it in my package like this:


  export PKG_CONFIG_PATH=$QT_PATH/lib/pkgconfig:$PKG_CONFIG_PATH
  export PATH="$QT_PATH/bin:$PATH"

  QT_LIBS="-F$QT_PATH/lib"
  QT_CPPFLAGS="-F$QT_PATH/lib"
  for fw in QtCore QtGui QtWidgets QtPrintSupport QtMacExtras QtMultimedia ; do
    QT_LIBS="$QT_LIBS -framework $fw"
    QT_CPPFLAGS="$QT_CPPFLAGS -I$QT_PATH/lib/$fw.framework/Headers"
  done
  export LIBS="$LIBS $QT_LIBS"
  export CPPFLAGS="$CPPFLAGS $QT_CPPFLAGS"


It seems Gnuplot is doing something similar.


Cheers,
Max
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