[ptxdist] qt4.make leaks include/lib path in devpkg

[ptxdist] qt4.make leaks include/lib path in devpkg

[Jon Ringle]

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In rules/qt4.make, there is:
```
ifdef PTXCONF_QT4_EXAMPLES
QT4_DEVPKG      := NO
endif
```
This means that a qt4 dev package will be probably be created.
The qt4.extract rule will create some mkspecs files that contain the
absolute path for include and lib dirs. These mkspecs files get packaged up
in the qt4-*-dev.tar.gz package and does not get fixed up. This caused some
very strange errors when building our project because the include path that
the project used picked up the include path from the qt4 dev package and
pointed to the wrong header file from another platform.

Having a qt4 dev package is a real build time saver and I don't really want
to mark it with QT4_DEVPKG := NO unconditionally, but I'm not sure what the
proper fix for it would be.

Thanks,
-Jon

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Re: [ptxdist] qt4.make leaks include/lib path in devpkg

[Michael Olbrich]

On Mon, Mar 11, 2019 at 10:25:59PM -0400, Jon Ringle wrote:
> In rules/qt4.make, there is:
> ```
> ifdef PTXCONF_QT4_EXAMPLES
> QT4_DEVPKG      := NO
> endif
> ```
> This means that a qt4 dev package will be probably be created.
> The qt4.extract rule will create some mkspecs files that contain the
> absolute path for include and lib dirs. These mkspecs files get packaged up
> in the qt4-*-dev.tar.gz package and does not get fixed up. This caused some
> very strange errors when building our project because the include path that
> the project used picked up the include path from the qt4 dev package and
> pointed to the wrong header file from another platform.

Huh, I expect that qt5 has the same problem.

> Having a qt4 dev package is a real build time saver and I don't really want
> to mark it with QT4_DEVPKG := NO unconditionally, but I'm not sure what the
> proper fix for it would be.

Take a look at what e.g. rules/host-autotools-autoconf.make does. You need
to overwrite qt4.install.post and then do some s/old-sysroot/new-sysroot/
before calling world/install.post.

Michael

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