libcamera-apps: switch from CMake to meson

CMake is removed in upstream libcamera-apps as of 9e17265,
thus switch to meson to build the package from now on.

Add PACKAGECONFIG entries and neon flags matching the settings
project meson.build as described in the official documentation
https://www.raspberrypi.com/documentation/computers/camera_software.html#building-libcamera-apps

Default to "drm" for PACKAGECONFIG as it is the only option enabled
in both recommended meson setup for Raspberry Pi OS and Raspberry Pi
OS Lite.

Signed-off-by: Vivien Didelot <[email protected]>

dynamic-layers/multimedia-layer/recipes-multimedia/libcamera-apps/libcamera-apps_git.bb

@@ -1,4 +1,4 @@
-SUMMARY = "A suite of libcamera-based apps for the Raspberry Pi"
+SUMMARY = "A suite of libcamera-based apps"
 DESCRIPTION = "This is a small suite of libcamera-based apps that aim to \
 copy the functionality of the existing \"raspicam\" apps."
 HOMEPAGE = "https://github.com/raspberrypi/libcamera-apps"
@@ -18,27 +18,23 @@ S = "${WORKDIR}/git"
 
 DEPENDS = "libcamera libexif jpeg tiff libpng boost"
 
-inherit cmake pkgconfig
+PACKAGECONFIG ??= "drm"
+PACKAGECONFIG[libav] = "-Denable_libav=true, -Denable_libav=false, libav"
+PACKAGECONFIG[drm] = "-Denable_drm=true, -Denable_drm=false, libdrm"
+PACKAGECONFIG[egl] = "-Denable_egl=true, -Denable_egl=false, virtual/egl"
+PACKAGECONFIG[qt] = "-Denable_qt=true, -Denable_qt=false, qtbase"
+PACKAGECONFIG[opencv] = "-Denable_opencv=true, -Denable_opencv=false, opencv"
+PACKAGECONFIG[tflite] = "-Denable_tflite=true, -Denable_tflite=false, tensorflow-lite"
 
-EXTRA_OECMAKE = "\
-    -DCMAKE_BUILD_TYPE=Release \
-    -DBoost_INCLUDE_DIR=${STAGING_INCDIR} \
-    -DCMAKE_LIBRARY_PATH=${STAGING_LIBDIR} \
-"
-
-LIBCAMERA_ARCH = "${TARGET_ARCH}"
-LIBCAMERA_ARCH:aarch64 = "arm64"
-LIBCAMERA_ARCH:arm:raspberrypi3 = "armv8-neon"
-LIBCAMERA_ARCH:arm:raspberrypi4 = "armv8-neon"
-EXTRA_OECMAKE += "-DENABLE_COMPILE_FLAGS_FOR_TARGET=${LIBCAMERA_ARCH}"
+inherit meson pkgconfig
 
-PACKAGECONFIG[drm] = "-DENABLE_DRM=1,-DENABLE_DRM=0,libdrm"
-PACKAGECONFIG[x11] = "-DENABLE_X11=1,-DENABLE_X11=0"
-PACKAGECONFIG[qt] = "-DENABLE_QT=1,-DENABLE_QT=0"
-PACKAGECONFIG[opencv] = "-DENABLE_OPENCV=1,-DENABLE_OPENCV=0,opencv"
-PACKAGECONFIG[tflite] = "-DENABLE_TFLITE=1,-DENABLE_TFLITE=0,tensorflow-lite"
+NEON_FLAGS = ""
+NEON_FLAGS:aarch64 = "-Dneon_flags=arm64"
+NEON_FLAGS:arm:raspberrypi3 = "-Dneon_flags=armv8-neon"
+NEON_FLAGS:arm:raspberrypi4 = "-Dneon_flags=armv8-neon"
+EXTRA_OEMESON += "${NEON_FLAGS}"
 
+# QA Issue: /usr/bin/camera-bug-report contained in package libcamera-apps requires /usr/bin/python3
 do_install:append() {
-    # Requires python3-core which not all systems may have
     rm -v ${D}/${bindir}/camera-bug-report
 }