Question

I have a project for which I regularly modify headers and when I do so, and forget to make clean then make, I get all sorts of weird behavior. I’m currently using Qt Creator as my IDE, but I’ve seen this happen on a Qt-independent project. My project is getting fairly large, and having to rebuild every time I make a header change is becoming unproductive. Any thoughts?

For future reference:

If using the QMake system:

DEPENDPATH += . \
    HeaderLocation1/ \
    HeaderLocation2/ \
    HeaderLocation2/HeaderSubLocation1/ \
    HeaderLocation2/HeaderSubLocation2/ \
    HeaderLocation2/HeaderSubLocation3/ \
    HeaderLocation2/HeaderSubLocation4/ \
    HeaderLocation2/HeaderSubLocation5/ \
    HeaderLocation3/ \
    HeaderLocation3/HeaderSubLocation1/ \
    HeaderLocation3/HeaderSubLocation2/ \

Answer 1

Dont know anything about your IDE, and not sure if its relevant, and since you are not including your makefile – I’ll just state the obvious – do you use any auto-generated dependencies?

For g++ I use the -MD flag, then in the makefile include $(wildcard bin/*.d) (depending on where your object file is created, mine are created in ‘bin’)

Also make sure to delete the dep file on a clean build