WARNHarfBuzz has a Meson port and tries to migrate all the other build systems to it, please consider using it as we might remove our cmake port soon.
CMake Warning:
  Manually-specified variables were not used by the project:

    CMAKE_EXPORT_NO_PACKAGE_REGISTRY
    HB_BUILD_TESTS


In file included from /home/conan/w/cci_PR-3357/.conan/data/harfbuzz/2.7.2/_/_/build/45a3a3cbfd749db27268aa41faacdcd6cc59688e/source_subfolder/src/hb-subset.cc:41:0:
/home/conan/w/cci_PR-3357/.conan/data/harfbuzz/2.7.2/_/_/build/45a3a3cbfd749db27268aa41faacdcd6cc59688e/source_subfolder/src/hb-ot-color-colr-table.hh: In member function ‘hb_iter_t<iter_t, Item>::item_t hb_iter_t<iter_t, Item>::operator*() const [with iter_t = hb_map_iter_t<hb_range_iter_t<unsigned int, unsigned int>, OT::COLR::subset(hb_subset_context_t*) const::<lambda(hb_codepoint_t)>, (hb_function_sortedness_t)1, 0u>; Item = hb_pair_t<bool, OT::BaseGlyphRecord>]’:
/home/conan/w/cci_PR-3357/.conan/data/harfbuzz/2.7.2/_/_/build/45a3a3cbfd749db27268aa41faacdcd6cc59688e/source_subfolder/src/hb-ot-color-colr-table.hh:220:62: warning: ‘new_record.OT::BaseGlyphRecord::firstLayerIdx.OT::IntType<short unsigned int, 2u>::v.BEInt<short unsigned int, 2>::v[1]’ may be used uninitialized in this function [-Wmaybe-uninitialized]
     return hb_pair_t<bool, BaseGlyphRecord> (true, new_record);
                                                              ^
/home/conan/w/cci_PR-3357/.conan/data/harfbuzz/2.7.2/_/_/build/45a3a3cbfd749db27268aa41faacdcd6cc59688e/source_subfolder/src/hb-ot-color-colr-table.hh:217:21: note: ‘new_record.OT::BaseGlyphRecord::firstLayerIdx.OT::IntType<short unsigned int, 2u>::v.BEInt<short unsigned int, 2>::v[1]’ was declared here
     BaseGlyphRecord new_record;
                     ^~~~~~~~~~
/home/conan/w/cci_PR-3357/.conan/data/harfbuzz/2.7.2/_/_/build/45a3a3cbfd749db27268aa41faacdcd6cc59688e/source_subfolder/src/hb-ot-color-colr-table.hh:220:62: warning: ‘new_record.OT::BaseGlyphRecord::firstLayerIdx.OT::IntType<short unsigned int, 2u>::v.BEInt<short unsigned int, 2>::v[0]’ may be used uninitialized in this function [-Wmaybe-uninitialized]
     return hb_pair_t<bool, BaseGlyphRecord> (true, new_record);
                                                              ^
/home/conan/w/cci_PR-3357/.conan/data/harfbuzz/2.7.2/_/_/build/45a3a3cbfd749db27268aa41faacdcd6cc59688e/source_subfolder/src/hb-ot-color-colr-table.hh:217:21: note: ‘new_record.OT::BaseGlyphRecord::firstLayerIdx.OT::IntType<short unsigned int, 2u>::v.BEInt<short unsigned int, 2>::v[0]’ was declared here
     BaseGlyphRecord new_record;
                     ^~~~~~~~~~
CMake Warning:
  Manually-specified variables were not used by the project:

    CMAKE_EXPORT_NO_PACKAGE_REGISTRY