[Qt-creator] How *not* hard-code Qt Project Build Environment variable LD_LIBRARY_PATH ?

[Ed Sutton]

Sorry, I am stuck on this...

When it comes to dynamically loaded shared libs that are required at link time, I can not figure out the trick of completely removing hard-coded paths from my Qt Creator project build environment.  Setting LD_LIBRARY_PATH under the Qt Project Build Environment to a relative path works fine for building / linking. Example:

LD_LIBRARY_PATH=/opt/qtsdk-2010.02/lib/qtcreator:/home/esutton/projects/myproject/guiproject/../../lib


Question: How can I replace the base part of the relative path with a variable?

Replacing with $(PWD), does not work.  Apparently at the build environment stage, PWD is set to the qmake working directory of "/opt/qtsdk-2010.02/qt/bin"

LD_LIBRARY_PATH=/opt/qtsdk-2010.02/lib/qtcreator:$(PWD)/../../lib



Can a variable added to the Qt project file be referenced in the Qt project Build Environment ?

I tried adding this to my Qt Project File:

MYLDLIBPATH = $$PWD/../../lib
message(MYLDLIBPATH == $$MYLDLIBPATH)

and adding a reference to this variable in the Qt project Build Environment:

LD_LIBRARY_PATH=/opt/qtsdk-2010.02/lib/qtcreator:$(MYLDLIBPATH)

This does *not* work even though the qmake message displays the desired path:

Project MESSAGE: MYLDLIBPATH = /home/esutton/projects/myproject/guiproject/../../lib

I am building under Red Hat Enterprise Linux 5.x.  I do not want to use rpath because I want to avoid hard-coded paths in released binaries.  My goal is to retrieve source code from the repository and to build a release using:

qmake myproject.pro
make

-Ed