[BUG]1.5.1 fails to build on PI Zero 2W

[LeBirlante]

Building rpicam-apps in the past always worked in this system, but trying to build 1.5.1 now fails to compile.

Meson setup:

meson setup build -Denable_libav=enabled -Denable_drm=enabled -Denable_egl=disabled -Denable_qt=disabled -Denable_opencv=enabled -Denable_tflite=disabled

Result:

rpicam-apps 1.5.1

libcamera location : /usr/lib version : 0.3.1

Build configuration libav encoder : YES drm preview : YES egl preview : NO qt preview : NO OpenCV postprocessing: YES TFLite postprocessing: NO Hailo postprocessing : NO

User defined options enable_drm : enabled enable_egl : disabled enable_libav : enabled enable_opencv : enabled enable_qt : disabled enable_tflite : disabled neon_flags : armv8-neon

Found ninja-1.12.1 at /usr/bin/ninja

Then we try,

meson compile -C build -j 1

And here it goes:

INFO: autodetecting backend as ninja INFO: calculating backend command to run: /usr/bin/ninja -C /home/varet/rpicam-apps/build -j 1 ninja: Entering directory/home/varet/rpicam-apps/build' [5/49] Compiling C++ object rpicam_app.so.1.5.1.p/core_rpicam_app.cpp.o FAILED: rpicam_app.so.1.5.1.p/core_rpicam_app.cpp.o c++ -Irpicam_app.so.1.5.1.p -I. -I.. -Icore -I/usr/include/libcamera -I/usr/include -I/usr/include/libpng16 -I/usr/include/libdrm -fdiagnostics-color=always -D_GLIBCXX_ASSERTIONS=1 -Wall -Winvalid-pch -Wextra -Wpedantic -Werror -std=c++17 -O3 -pedantic -Wno-unused-parameter -faligned-new -D_FILE_OFFSET_BITS=64 -Wno-psabi -mfpu=neon-fp-armv8 -ftree-vectorize -DLIBAV_PRESENT=1 -DLIBDRM_PRESENT=1 -fPIC -pthread -DBOOST_ALL_NO_LIB -MD -MQ rpicam_app.so.1.5.1.p/core_rpicam_app.cpp.o -MF rpicam_app.so.1.5.1.p/core_rpicam_app.cpp.o.d -o rpicam_app.so.1.5.1.p/core_rpicam_app.cpp.o -c ../core/rpicam_app.cpp`

../core/rpicam_app.cpp: In member function ‘void RPiCamApp::StartCamera()’:

../core/rpicam_app.cpp:640:83: error: ‘ScalerCrops’ is not a member of ‘libcamera::controls::rpi’ 640 | if (!controls_.get(controls::ScalerCrop) && !controls_.get(controls::rpi::ScalerCrops)) | ^~~~~~~~~~~

../core/rpicam_app.cpp:668:46: error: ‘ScalerCrops’ is not a member of ‘libcamera::controls::rpi’ 668 | controls_.set(controls::rpi::ScalerCrops, libcamera::Span<const Rectangle>(crops.data(), crops.size()));

First time I've run across this compile error... any ideas about what could I be doing wrong here?

thanks for your time,

[naushir]

You need to have the latest libcamera-dev package installed. Or if you are building manually, please ensure you build libcamera from the latest source at https://github.com/raspberrypi/libcamera.

[LeBirlante]

Thanks for your response.

I think I'm already using latest libcamera:

---

pacman -Qi libcamera

`Name : libcamera Version : 0.3.1-2 Description : A complex camera support library for Linux, Android, and ChromeOS Architecture : armv7h URL : https://libcamera.org/ Licenses : Apache-2.0 CC0-1.0 GPL-2.0-only WITH Linux-syscall-note GPL-2.0-or-later LGPL-2.1-or-later GPL-2.0-or-later WITH Linux-syscall-note OR BSD-3-Clause GPL-2.0-or-later WITH Linux-syscall-note OR MIT Groups : None Provides : libcamera.so=0.3-32 libcamera-base.so=0.3-32 Depends On : gcc-libs glibc gnutls libcamera-ipa libelf libunwind libyaml sh systemd-libs libudev.so=1-32 Optional Deps : gst-plugin-libcamera: GStreamer plugin libcamera-docs: for documentation [installed] libcamera-tools: for applications [installed] Required By : libcamera-ipa libcamera-tools Optional For : None Conflicts With : None Replaces : None Installed Size : 2.49 MiB Packager : Arch Linux ARM Build System builder+xu2@archlinuxarm.org Build Date : Mon Aug 5 20:32:29 2024 Install Date : Tue Aug 13 16:58:45 2024 Install Reason : Installed as a dependency for another package Install Script : No Validated By : Signature

---

Next, I follow the docs at https://www.raspberrypi.com/documentation/computers/camera_software.html#building-rpicam-apps-without-building-libcamera , since as seen above, I am not manually building libcamera. Also, libcamera-dev is not available as a package for my distro (Arch Linux ARM), so I have never installed it.

The thing is, this worked perfectly in the past (installing libcamera package, and then manually compiling rpicam-apps), but now it throws the compile error shown in my first post. Only thing I can think of, is that somehow the arch linux package 'libcamera' has some kind of problem, or perhaps is it not the latest version?

[naushir]

URL : https://libcamera.org/

This suggests you are not using libcamera from https://github.com/raspberrypi/libcamera. Upstream libcamera does not yet have Pi 5 + ScalerCrops support. Until this has been merged (we are actively working on this with the libcamera team), you need to use our repo for rpicam-apps to work correctly.

[naushir]

It could also be that you don't have the latest libcamera dev packages in your system. Have you done an apt update recently? We made a new camera release one or two weeks ago that added this ScalerCrops feature.

[LeBirlante]

URL : https://libcamera.org/

This suggests you are not using libcamera from https://github.com/raspberrypi/libcamera. Upstream libcamera does not yet have Pi 5 + ScalerCrops support. Until this has been merged (we are actively working on this with the libcamera team), you need to use our repo for rpicam-apps to work correctly.

That seems to be the thing.... as you say, I am using a package built directly from libcamera.org, not from your repository. I use that package because building libcamera on a low ram device like the pi zero 2W gives a lot of headaches (OOM even when passing -j 1 to the ninja build command).

But now, knowing that you are about to merge with libcamera upstream, then I will simply wait for that to happen, as there's no hurry in my current project.

Thanks a lot for pointing me out my problem!