I have a qt project setup as a subdirs project with my source code in a src directory and unit testing code setup in a test directory. Each has its own project file. I want to be able to compile the source on other computers, but they may not have the googletest library setup. I have looked at the qmake test function "requires()" and "packagesExist()" however, they do not seem to be built to handle external libraries.
How can I instruct qmake to skip the test project if the testing library is not found?
It is not possible without checking typical locations if the library is present in there.
Unfortunately, googletest does not seem to ship package-config ".pc" files either, so that is why you cannot use the packagesExist() qmake function.
So, I would use a bunch of exist call to work this around, or switch away from qmake to something better like cmake.
!exists("/foo/bar/baz.so"):!exists("/hello/world/baz.so"):...: message("Google test is not installed on your system")