qmake: SOURCE-File which exists is not found

[topse]

Hi,
I have a problem with a source-file:

# works:
SOURCES += C:\Qt\5.11.2\msvc2017_64\../Src/qtbase/src/3rdparty/sqlite/sqlite3.c

#works not:
SOURCES += $(QTDIR)\../Src/qtbase/src/3rdparty/sqlite/sqlite3.c

#error-message: WARNING: Failure to find: Src\qtbase\src\3rdparty\sqlite\sqlite3.c
#inspite of the error Qt Creator shows file in tree

I double checked... Environment QTDIR = C:\Qt\5.11.2\msvc2017_64

Can anyone help?

Thanks and Best Regards,
Tobias

[sierdzio]

Wrong syntax. Use $$(QTDIR) as explained in qmake documentation:

To obtain the contents of an environment value when qmake is run, use the $$(...) operator:

http://doc.qt.io/qt-5/qmake-language.html

[topse]

Thanks -- I had a bad feeling it would be easy...

Best Regards,
Tobias