Compiling motionplus with libcamera support on Raspbian bullseye

[grilparto]

I'm trying to compile motionplus on raspbian bullseye. When I do the ./configure I noticed in the output that it says "libcamera support: no. I know that bullseye has libcamera support already included. Unfortunately the package name isn't "libcamera" though I don't think. It seems like it's either libcamera-apps or libcamera-apps-lite (for those using the "lite" version of the OS).

I have somewhat limited experience in this area, but is there a way to point the config file to the appropriate package when doing the ./configure? I tried doing ./configure --with-libcam=/usr/lib/aarch64-linux-gnu (where the libcamera_app.so file is), but that didn't seem to work. Looking at the CLI output higher up it looks like it appended /lib/pkgconfig to the directory I included in the option flag.

Specifically, this was the output when I used the --with-libcam=/usr/lib/aarch64-linux-gnu flag:
checking LIBCAM pkgconf path... /usr/lib/aarch64-linux-gnu/lib/pkgconfig:
checking for LIBCAM... no

Anyone have any thoughts? I'm 98% sure I'm just on the wrong track here because of my limited expertise.

[Mr-Dave]

You must install the libcamera apps via apt to get that support.

[martin762]

I think that you will need libcamera-dev via apt

[Bhoft]

oh man why is this nowhere written or mentioned in the docs / issues on github that you also have to install libcamera-dev to that configure finds the libaries...
this had taken me ages to find.

can somebody also give examples what prefix / sysconfdir must be set so thet the files get into the correct directory?