Qt build fails using Android ndk r18 (fine with r17)

Checking for valid makespec... 
+ cd /home/development/4suse42.3-android/qt-5.11.2-r18-arm/config.tests/verifyspec && /home/development/4suse42.3-android/qt-5.11.2-r18-arm/qtbase/bin/qmake "CONFIG -= qt debug_and_release app_bundle lib_bundle" "CONFIG += shared warn_off console single_arch" 'QMAKE_LIBDIR += /home/development/4suse42.3-android/sqlite-3.25.01.00-r18-api24-arm/install/lib' 'INCLUDEPATH += /home/development/4suse42.3-android/sqlite-3.25.01.00-r18-api24-arm/install/include /home/development/4suse42.3-android/openssl-1.1.0i-r18-api24-arm/include' -early "CONFIG += cross_compile" /home/development/qt-everywhere-src-5.11.2/qtbase/config.tests/verifyspec
+ cd /home/development/4suse42.3-android/qt-5.11.2-r18-arm/config.tests/verifyspec && MAKEFLAGS= /usr/bin/gmake
> /home/development/4suse42.3-android/android-ndk-r18/toolchains/llvm/prebuilt/linux-x86_64/bin/clang++ -c -D__ANDROID_API__=19 -target armv7-none-linux-androideabi -gcc-toolchain /home/development/4suse42.3-android/android-ndk-r18/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64 -DANDROID_HAS_WSTRING --sysroot=/home/development/4suse42.3-android/android-ndk-r18/sysroot -isystem /home/development/4suse42.3-android/android-ndk-r18/sysroot/usr/include/arm-linux-androideabi -isystem /home/development/4suse42.3-android/android-ndk-r18/sources/cxx-stl/llvm-libc++/include -isystem /home/development/4suse42.3-android/android-ndk-r18/sources/android/support/include -isystem /home/development/4suse42.3-android/android-ndk-r18/sources/cxx-stl/llvm-libc++abi/include -fstack-protector-strong -DANDROID -march=armv7-a -mfloat-abi=softfp -mfpu=vfp -fno-builtin-memmove -mthumb -Oz -fPIC  -I/home/development/qt-everywhere-src-5.11.2/qtbase/config.tests/verifyspec -I. -I/home/development/4suse42.3-android/sqlite-3.25.01.00-r18-api24-arm/install/include -I/home/development/4suse42.3-android/openssl-1.1.0i-r18-api24-arm/include -I/home/development/qt-everywhere-src-5.11.2/qtbase/mkspecs/android-clang -o verifyspec.o /home/development/qt-everywhere-src-5.11.2/qtbase/config.tests/verifyspec/verifyspec.cpp
> /home/development/4suse42.3-android/android-ndk-r18/toolchains/llvm/prebuilt/linux-x86_64/bin/clang++ -D__ANDROID_API__=19 -target armv7-none-linux-androideabi -gcc-toolchain /home/development/4suse42.3-android/android-ndk-r18/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64 -Wl,--exclude-libs,libgcc.a --sysroot=/home/development/4suse42.3-android/android-ndk-r18/platforms/android-19/arch-arm/ -Wl,-soname,libverifyspec.so -Wl,--no-undefined -Wl,-z,noexecstack -shared -o libverifyspec.so verifyspec.o   -L/home/development/4suse42.3-android/sqlite-3.25.01.00-r18-api24-arm/install/lib -L/home/development/4suse42.3-android/android-ndk-r18/sources/cxx-stl/llvm-libc++/libs/armeabi-v7a -lc++ -llog -lz -lm -ldl -lc
> /home/development/4suse42.3-android/android-ndk-r18/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: error: cannot find -lc++
> clang++: error: linker command failed with exit code 1 (use -v to see invocation)
> Makefile:66: recept voor doel 'libverifyspec.so' is mislukt
> gmake: *** [libverifyspec.so] Fout 1
Note: Also available for Linux: linux-clang linux-icc

ERROR: Cannot compile a minimal program. The toolchain or QMakeSpec is broken.
+ exit 1

${QTSRCDIR}/configure \
        -release -commercial -confirm-license \
        -prefix $QTDIR \
        -sql-sqlite -system-sqlite -I${SQLITEDIR}/include -L${SQLITEDIR}/lib \
        -openssl -openssl-runtime -I${OPENSSLPATH}/include \
        -xplatform android-clang \
        -nomake tests -nomake examples \
        -android-sdk ${ANDROIDPATH}/android-sdk-${SDK} \
        -android-ndk ${ANDROIDPATH}/android-ndk-${NDK} \
        -android-ndk-host linux-x86_64 -android-toolchain-version 4.9 \
        -android-ndk-platform android-19 \
        -android-arch armeabi-v7a \
        -skip qttranslations -skip qtserialport \
        -no-warnings-are-errors -v || exit 1