QMake: Use string as variable

Alvaro Silva

Hello,

I have a string and I want to use it as part of another variable name

QT_MODULE_NAME = xml

# I would like to use something like this:
LIB_PATH = $${QT.$${QT_MODULE_NAME}.libs}

But it does not seem to work. I get Missing } terminator

Any tips?

sierdzio

I don't think qmake supports nesting variable names like that. One thing you could try is to use different scoping methods:

LIB_PATH = $${QT.$${QT_MODULE_NAME}.libs}
# Or
LIB_PATH = $${QT.$$(QT_MODULE_NAME).libs}
# Or
LIB_PATH = $${QT.${QT_MODULE_NAME}.libs}

Dig through qmake documentation, maybe it will help.

Alternative would be to build an array and iterate over it, like:

QT_MODULE_NAMES = QT.xml QT.widgets QT.networking
QT_MODULE_NAMES += QT.gui
for (module, QT_MODULE_NAMES) {
  LIB_PATH=module.libs
}

I have no idea if it will work with variable names - I doubt it.

hskoglund

Hi, try:

LIB_PATH = $$eval(QT.$${QT_MODULE_NAME}.libs)