[Qbs] Building code generator and its dependencies for a different architecture than the rest of the products

[Leon Buckel]

Thanks Christian, that's really helpful!

I think I almost got it to work. The problem I have now is that the app seems to link against the wrong version of the library:

ld: warning: ignoring file /.../lib.eyJwcm9maWxlIjoiaG9zdFByb2ZpbGUifQ--.cd69e9f1/.tmp/lib, building for iOS-arm64 but attempting to link with file built for macOS-x86_64

I tried setting the profile for the app to "targetProfile" but it makes no difference. Also no bundles are generated for the library. There's only the binary in the hidden .tmp folder.

Here's a small test project I set up that has the issue. Note that I have to set qbs.targetPlatform to "macos" because qbs.hostPlatform is undefined. The docs only say 'Do not use this property'.

Project {
    Profile {
        name: "hostProfile"
        qbs.targetPlatform: "macos"
    }

    Profile {
        name: "targetProfile"
        baseProfile: project.profile
    }

    DynamicLibrary {
        name: "lib"
        files: ["lib.cpp"]
        multiplexByQbsProperties: ["profiles"]

        qbs.profiles: ["hostProfile", "targetProfile"]

        Depends { name: "cpp" }
    }

    CppApplication {
        consoleApplication: true
        name: "gen"
        files: ["gen.cpp"]

        qbs.profile: "hostProfile"

        Depends { name: "lib" }
    }

    CppApplication {
        name: "app"
        files: ["gen.cpp"]

        Depends { name: "lib" }
    }
}



Leon

________________________________
From: Qbs <qbs-bounces at qt-project.org> on behalf of Christian Kandeler <christian.kandeler at qt.io>
Sent: Friday, March 20, 2020 3:47 PM
To: qbs at qt-project.org <qbs at qt-project.org>
Subject: Re: [Qbs] Building code generator and its dependencies for a different architecture than the rest of the products

On Fri, 20 Mar 2020 15:41:21 +0100
Christian Kandeler <christian.kandeler at qt.io> wrote:

> Your app and build tool use normal Depends items for pulling in the library; the matching should work automatically.

Addendum: Of course, you also need to set the host profile in your build tool:
    CppApplication {
        // ...
        qbs.profile: "hostProfile"
    }


Christian
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