- seems like the ICU detection broken now and pulls ins system ICU files which leads to `HAVE_ICU` defined and ends up with a broken build
```
[69/79] Compiling C++ object src/libharfbuzz-icu.so.0.50200.0.p/hb-icu.cc.o
FAILED: src/libharfbuzz-icu.so.0.50200.0.p/hb-icu.cc.o
/mnt/build/LibreELEC-RR/build.LibreELEC-x11.x86_64-11.0-devel/toolchain/bin/x86_64-libreelec-linux-gnu-g++ -Isrc/libharfbuzz-icu.so.0.50200.0.p -Isrc -I../src -I. -I.. -I/usr/include -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wnon-virtual-dtor -std=c++11 -fno-rtti -O0 -fno-exceptions -fno-rtti -fno-threadsafe-statics -fvisibility-inlines-hidden -DHAVE_CONFIG_H -march=x86-64-v2 -Wall -pipe -O2 -fomit-frame-pointer -DNDEBUG -fPIC -Wno-non-virtual-dtor -MD -MQ src/libharfbuzz-icu.so.0.50200.0.p/hb-icu.cc.o -MF src/libharfbuzz-icu.so.0.50200.0.p/hb-icu.cc.o.d -o src/libharfbuzz-icu.so.0.50200.0.p/hb-icu.cc.o -c ../src/hb-icu.cc
CROSS COMPILE Badness: /usr/include in INCLUDEPATH: /usr/include
cc1plus: internal compiler error: in add_path, at incpath.cc:481
0x6b83d4 _start
../sysdeps/x86_64/start.S:115
Please submit a full bug report, with preprocessed source (by using -freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
```
