When is host_build true?

yetanotherqtfan

I'm building qt5 from source on Windows using mingw kit. I find the qmake condition host_build is false. There are many occurrences in .prf files such as:

!host_build|!cross_compile {
    use_gold_linker: QMAKE_LFLAGS += $$QMAKE_LFLAGS_USE_GOLD
    enable_new_dtags: QMAKE_LFLAGS += $$QMAKE_LFLAGS_NEW_DTAGS
    enable_gdb_index: QMAKE_LFLAGS += $$QMAKE_LFLAGS_GDB_INDEX
}

I want to know the meaning of host_build, and how/when is it set to true?

Thanks

yetanotherqtfan

Qt experts, please help!

VRonin

When cross compiling a project, host_build is set to true indicates that the output of the build should run on the developer machine (the host) and not the cross compile target

yetanotherqtfan

Thanks, @VRonin Can you please point me with the source code line that sets host_build to true? Why host_build is false in my build, considering my build runs on the developer machine?

VRonin

Can you please point me with the source code line that sets host_build to true?

https://code.woboq.org/qt5/qtbase/qmake/library/qmakeparser.cpp.html#1244
it's a config option

If you are not cross compiling this option should be irrelevant to you. what is the problem you are experiencing?