udefined reference to external lib

[0xNull]

Hi im trying to use an external lib / api on my current project (imbe_vocoder)...

some information before:

OS: Ubuntu / Linux
KIT: Android QT 5.15.2 CLang multi-abi
(all QT packages / SDK / NDK / ETC... already installed correctly )

imbe_vocoder is already compiled for aarch64 / android.

trying to compile to my current kit show me the next error:

anyone know why? i already try changing compiler options from multi-abi to specific aarch64 but doesn't work... and i haven't any idea of how to fix that.

[Christian Ehrlicher]

Your LIBS parameter doesn't look right

• you're missing the lib path
• it's not -L but -l

as properly described in the documentation.

[JonB]

@0xNull
I don't think it has anything to do with architecture. It looks like you have not told it which library file to link with to resolve the references.

LIBS += -Limbe_vocder

Are you aware that the -L argument tells the linker to look in the specified directory for lib files? It is the -l argument which specifies a library file. (They can both be used if required.) Did you maybe intend -limbe_vocder?

[0xNull]

This happend when change -L to -l

inside project folder

[JonB]

@0xNull
Look at the filename of the .a file and the error message. You say it is imbe_vocoder. So far as I can see it's mbe_vocoder, in libmbe_vocoder.a.

[0xNull]

@JonB nope.. doesn't work

[JonB]

@0xNull
And does your linker look in whatever directory that is? Do you need to add that directory with a -L argument?

Does the package come with any instructions for its usage?

[0xNull]

@JonB said in udefined reference to external lib:

Does the package come with any instructions for its usage?

yes i'll share the git repos with you, and try compile.

app
https://github.com/nostar/DroidStar

vocoder (pre-requisite)
https://github.com/nostar/imbe_vocoder

ok.. i'll explain you how to build the APK... first compile the vocoder following the README file, after all put the generated files on project folder then on QT Creator import the project and build in android kit 5.15.2 clang multi-abi. Try

[jsulm]

@0xNull Could you please tell the linker where to look for the lib using -L as already suggested here several times?

LIBS += -LFOLDER_WHERE_IMBE_VOCODER_LIB_IS -limbe_vocoder

And please post text instead of pictures.