[PyQt] Incorrect Makefile using .prl files from Qt 5.12.4

[Phil Thompson]

On 26/06/2019 16:03, Hans Gaiser wrote:
> Hi there,
> 
> Since Qt 5.12.4, .prl files use $$[QT_INSTALL_LIBS] variables to
> indicate the absolute location in which Qt libraries are installed. In
> Qt 5.12.3:
> 
> cat /usr/lib/libQt5Gui.prl
> 
> ...
> QMAKE_PRL_LIBS =  -lQt5Core -lpthread
> 
> However, in Qt 5.12.4:
> 
> cat /usr/lib/libQt5Gui.prl
> 
> ...
> QMAKE_PRL_LIBS = $$[QT_INSTALL_LIBS]/libQt5Core.so -lpthread
> 
> These variables are not substituted by sip. The package I am using,
> uses sip to generate a Makefile. Because of this issue, in my Makefile
> I have an entry along the lines of:
> 
> LFLAGS = <....removed for clarity....> -lQt5Core -lpthread -lQt5Gui
> $$[QT_INSTALL_LIBS]/libQt5Core.so
> 
> This LFLAG causes failure during compilation. Should sip parse these
> variables, or should these variables not be in .prl files in the first
> place (in which case it is an upstream issue)?

The (deprecated) sip build system is only intended to parse the spec 
files that are part of sip itself.

You might be able to work around it by passing correct values on the 
command line.

Phil