Linking against target specific libraries

Applications
#1

I’m the author of jTox and I’ve always used static libraries to link with for the project.

Now that aarch64 is here tho the method I used to “switch” the library source folder is clunky. I used this kind of trick to switch based on project build profile:

CONFIG(debug,debug|release){ TOX_PATH = extra/i486 }
# CONFIG(debug,debug|release){ TOX_PATH = extra/armv7hl }
CONFIG(release,debug|release){ TOX_PATH = extra/armv7hl }
# CONFIG(release,debug|release){ TOX_PATH = extra/aarch64 }

This is pretty clunky now however. Is there a better way I can point to specific folders based on the target platform with the newer SDKs?

#2

Have you tried just using the %{_arch} variable in your spec file?

#3

How would that work tho? The choice of folders to use for linking is defined in the .pro file

#4

You can define an environment variable in your specfile, i.e. JTOX_ARCH=%{_arch} and then expand that in your project file using $$(JTOX_ARCH). There are probably also QMAKE_TARGET related variables that could work without that, but I don’t know qmake good enough for that.

#5

This works, as long as I whitelist the env var in the sailfishOS general config as well (took me a while to figure out why the env var was missing).

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