Qt: passing variables to subprojects -



Qt: passing variables to subprojects -

the construction of project follow:

proj proj.pro --subproj --subproj.pro ----subsubproj ----subsubproj.pro

is there way can instance global variable in subproj.pro , phone call en e.g. subsubproj.pro like:

proj.pro:

global_var = true

subsubproj.pro:

message($$global_var) update

maybe should more precise problem.

the usual behavior in qt creator when right-click on proj , take "build project"proj"" qmake proj.pro gets invoked qmake subproj.pro , subsubproj.pro

what want accomplish is:

when build project "proj" proj.pro , subproj.pro invoked (not subsubproj.pro) but: when build project "subproj" invoked files subproj.pro , subsubproj.pro

you accomplish 1) adding subproj.pro:

template = subdirs dont_invoke_subsub{ subdirs = subsubproj }

in case when qmake proj.pro 1) fulfilled. when qmake subproj.pro subsubproj doesnt built neither.

so thought hand on variable proj subproj.

proj.pro: global_var = true;

and subproj retrieves variable:

subproj.pro template = subdirs equals(global_var, true){ # nil because proj.pro invokes } else { # invoke qmake subsubproj.pro subdirs = subsubproj }

i managed include(...) command via config files.

an other way (but more limited) utilize config+=global_var in qmake arguments list. technique quite useful 'master' switchs.

but both of them can't alter global_var during pre-build process (qmake step) ...

qt parameter-passing qt-creator qmake

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