Qt for Embedded EGLFS

Sergius

Can't configure Qt6.8 for target platform: Allwinner T507.
I have installed requred mesa-dev libs:

root@HelperBox:~# ldconfig -p | grep libGLESv2
        libGLESv2.so.2 (libc6,AArch64) => /usr/lib/aarch64-linux-gnu/libGLESv2.so.2
        libGLESv2.so.2 (libc6,AArch64) => /usr/lib/libGLESv2.so.2
        libGLESv2.so (libc6,AArch64) => /usr/lib/aarch64-linux-gnu/libGLESv2.so
        libGLESv2.so (libc6,AArch64) => /usr/lib/libGLESv2.so
root@HelperBox:~# ldconfig -p | grep libEGL
        libEGL_mesa.so.0 (libc6,AArch64) => /usr/lib/aarch64-linux-gnu/libEGL_mesa.so.0
        libEGL.so.1 (libc6,AArch64) => /usr/lib/aarch64-linux-gnu/libEGL.so.1
        libEGL.so (libc6,AArch64) => /usr/lib/aarch64-linux-gnu/libEGL.so

My t507-toolchain.cmake file:

set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR aarch64)

# sysroot
set(CMAKE_SYSROOT ~/sysroot/helperbox-t507-u1804)

set(CMAKE_C_COMPILER aarch64-linux-gnu-gcc)
set(CMAKE_CXX_COMPILER aarch64-linux-gnu-g++)

set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)

set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -march=armv8-a -mtune=cortex-a53" CACHE STRING "" FORCE) # Пример для T507 (Cortex-A53)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=armv8-a -mtune=cortex-a53" CACHE STRING "" FORCE)

then i do:

cd ~/qt6-source 
mkdir build-t507
cd build-t507

export TARGET_SYSROOT=$(realpath ~/sysroot/helperbox-t507-u1804) 
export QT_HOST_INSTALL_PATH=~/Qt6/6.8.3/gcc_64
export QT_INSTALL_PATH=/opt/Qt6-arm64-T507 

export PKG_CONFIG_SYSROOT_DIR=${TARGET_SYSROOT}
export PKG_CONFIG_LIBDIR=${TARGET_SYSROOT}/usr/lib/aarch64-linux-gnu/pkgconfig:${TARGET_SYSROOT}/usr/share/pkgconfig

cmake ..  -GNinja  -DCMAKE_BUILD_TYPE=Release \
-DCMAKE_TOOLCHAIN_FILE=/home/skb/t507-toolchain.cmake \
-DCMAKE_INSTALL_PREFIX=$QT_INSTALL_PATH \
-DCMAKE_SYSROOT=$TARGET_SYSROOT \
-DCMAKE_FIND_ROOT_PATH=$TARGET_SYSROOT \
-DCMAKE_PREFIX_PATH=$TARGET_SYSROOT/usr \
-DQT_HOST_PATH=$QT_HOST_INSTALL_PATH \
-DQT_GENERATE_SBOM=OFF \
-DQT_BUILD_EXAMPLES=OFF \
-DQT_BUILD_TESTS=OFF \
-DFEATURE_developer_build=OFF \
-DBUILD_SHARED_LIBS=ON \
-DQT_FEATURE_xcb=OFF \
-DQT_FEATURE_xlib=OFF \
-DQT_FEATURE_xkbcommon=OFF \
-DQT_FEATURE_wayland=OFF \
-DQT_FEATURE_vulkan=OFF \
-DQT_FEATURE_egl=ON \
-DQT_FEATURE_opengles2=ON \
-DQT_FEATURE_fontconfig=ON \
-DQT_FEATURE_freetype=ON \
-DQT_QPA_DEFAULT_PLATFORM=eglfs

files egl.pc and glesv2.pc loacated in ~/sysroot/helperbox-t507-u1804/usr/lib/aarch64-linux-gnu/pkgconfig

but I alway get errors like this:

-- Configuring done (17.6s)
CMake Error at qtbase/cmake/QtTargetHelpers.cmake:186 (target_link_libraries):
  Target "EglFSDeviceIntegrationPrivate" links to:

    EGL::EGL

  but the target was not found.  Possible reasons include:

    * There is a typo in the target name.
    * A find_package call is missing for an IMPORTED target.
    * An ALIAS target is missing.

Call Stack (most recent call first):
  qtbase/cmake/QtModuleHelpers.cmake:615 (qt_internal_extend_target)
  qtbase/src/plugins/platforms/eglfs/CMakeLists.txt:24 (qt_internal_add_module)


CMake Error at qtbase/cmake/QtTargetHelpers.cmake:186 (target_link_libraries):
  Target "QEglFSIntegrationPlugin" links to:

    EGL::EGL

  but the target was not found.  Possible reasons include:

    * There is a typo in the target name.
    * A find_package call is missing for an IMPORTED target.
    * An ALIAS target is missing.

Call Stack (most recent call first):
  qtbase/cmake/QtPluginHelpers.cmake:280 (qt_internal_extend_target)
  qtbase/src/plugins/platforms/eglfs/CMakeLists.txt:93 (qt_internal_add_plugin)


CMake Error at qtbase/cmake/QtTargetHelpers.cmake:186 (target_link_libraries):
  Target "QMinimalEglIntegrationPlugin" links to:

    EGL::EGL

  but the target was not found.  Possible reasons include:

    * There is a typo in the target name.
    * A find_package call is missing for an IMPORTED target.
    * An ALIAS target is missing.

Call Stack (most recent call first):
  qtbase/cmake/QtPluginHelpers.cmake:280 (qt_internal_extend_target)
  qtbase/src/plugins/platforms/minimalegl/CMakeLists.txt:10 (qt_internal_add_plugin)