qt5.9 fails to build on Solaris10

Building Wireshark 2.4.2 on Solaris10 i386 VMware. build fails with QT missing.

Building qt-everywhere-opensource-src-5.9.2
Tools: gmake-3.82, g++-5.3.0, ld/ar-2.29
Libs: libgcrypt-1.8.1, libgpg-error-1.27, binutils-2.29, mpfr-3.1.4, mpc-1.0.3, libiconv-1.14

./configure –prefix $PWD/qtbase –opensource –confirm-license –nomake tests –qt-xcb –platform solaris-g++
gmake – error message
ld: libQt5core.so.5.9.2: version node not found for symbol [email protected]_5.6
ld: failed to set dynamic section sizes: Bad value

Looks like Qt sees a mismatch of 5.6 vs 5.9.2, but where?
Any thoughts?