Why we need "CONFIG += install_ok" in module example project files?

[jiancaiyang]

As this post mentioned: https://forum.qt.io/topic/74921/configure-qt-project-with-plugins

I am definitely thinking CONFIG += install_ok is useless, which however many of the Qt modules example use it. This originate from qt_example_installs.prf file.

    equals(TEMPLATE, app)|equals(TEMPLATE, lib) {
        !contains(INSTALLS, target) {
            !install_ok: \
                error("$$_PRO_FILE_ is lacking an install target.")
            else: check_examples: \
                warning("$$_PRO_FILE_ is lacking an install target.")
        } else: !equals(target.path, $$sources.path) {
            !install_ok: \
                error("$$_PRO_FILE_ installs target to unexpected location.")
            else: check_examples: \
                warning("$$_PRO_FILE_ installs target to unexpected location.")
        }
    }

Why we have to check installation ok? as with many Qt module examples, this configuration install_ok does not check all, many follows a comment:

CONFIG += install_ok  # Do not cargo-cult this!

In summary I think this configuration check should not be in the prf file.

[SGaist]

Hi,

What is your point exactly ?

Qt's examples are meant to be installed as part of Qt's own installation.