qt webengine

PWD=`pwd`
    mkdir install
    ./configure \
    -prefix $PWD/install \
    -shared \
    -release \
    -opensource \
    -xplatform linux-arm-gnueabi-g++ \
    -optimized-qmake -pch \
    -qt-libjpeg \
    -qt-libpng \
    -qt-zlib \
    -no-opengl \
    -skip qt3d \
    -skip qtcanvas3d \
    -skip qtpurchasing \
    -skip qtlocation \
    -skip qttools \
    -no-sse2 \
    -no-cups \
    -no-glib \
    -no-iconv \
    -openssl \
    -confirm-license \
    -pkg-config \
    -tslib \
    -linuxfb \
    -I /home/hujiafu/SSD202D/qt/tslib-1.15/install/include \
    -L /home/hujiafu/SSD202D/qt/tslib-1.15/install/lib \
    OPENSSL_INCDIR=/home/hujiafu/installpath/arm-openssl-1.1.1/include

result:

Note: Also available for Linux: linux-clang linux-icc

Note: -optimized-tools is not useful in -release mode.

Note: No wayland-egl support detected. Cross-toolkit compatibility disabled.

Note: The following modules are not being compiled in this configuration:
    webenginecore
    webengine
    webenginewidgets
    pdf
    pdfwidgets

WARNING: A pkg-config support is required to build QtWebEngine.

WARNING: QtWebEngine will not be built.

WARNING: QtPdf will not be built.

ERROR: Feature 'pkg-config' was enabled, but the pre-condition 'tests.pkg-config' failed.

pkg-config is installed

pkg-config --version

0.29.1

which pkg-config

/usr/bin/pkg-config

qt version is 5.15
host ubuntu18.04

what's wrong ? help me, thank you

    OPENSSL_LIBDIR=/home/hujiafu/installpath/arm-openssl-1.1.1/lib
    -recheck-all \
    -make examples