Fail to build 5.8.0 under macOS Sierra

Building 5.8.0 from source on MacOS Sierra. Here’s what I get when doing “./configure; make”:

[0126/034426:FATAL:icu_util.cc(101)] Check failed: path_ok.
0 qwebengine_convert_dict 0x000000010649098e _ZN4base5debug10StackTraceC2Ev + 30
1 qwebengine_convert_dict 0x00000001064909f5 _ZN4base5debug10StackTraceC1Ev + 21
2 qwebengine_convert_dict 0x00000001064a16f0 _ZN7logging10LogMessageD2Ev + 80
3 qwebengine_convert_dict 0x000000010649f5f5 _ZN7logging10LogMessageD1Ev + 21
4 qwebengine_convert_dict 0x000000010655bd68 ZN4base4i18n12_GLOBAL_N_119LazyInitIcuDataFileEv + 264
5 qwebengine_convert_dict 0x000000010655bc09 _ZN4base4i18n13InitializeICUEv + 233
6 qwebengine_convert_dict 0x000000010647bc7d main + 349
7 qwebengine_convert_dict 0x000000010647bb14 start + 52

make[3]: *** [qtwebengine_dictionaries/en-US.bdic] Trace/BPT trap: 5
make[2]: *** [sub-webenginewidgets-spellchecker-make_first] Error 2
make[1]: *** [sub-examples-make_first] Error 2
make: *** [module-qtwebengine-make_first] Error 2

Any ideas?

Somebody asked if a icudtl.dat file has been created - here are the ones that exist in the hierarchy:

./qtwebengine/lib/QtWebEngineCore.framework/Versions/5/Resources/icudtl.dat
./qtwebengine/src/3rdparty/chromium/third_party/icu/android/icudtl.dat
./qtwebengine/src/3rdparty/chromium/third_party/icu/common/icudtl.dat
./qtwebengine/src/core/Debug/icudtl.dat
./qtwebengine/src/core/Release/icudtl.dat

Best.
Chris