Since clang 16 (and gcc 11) the default C++ standard is now gnu++17.
Because textproc/jade's Makefile does not explicitly set its C++
standard, this leads to an error:
Recognizer.cxx:40:3: error: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
register const Trie *pos = trie_.pointer();
^~~~~~~~~
Add USE_CXXSTD=gnu++98 to compile for C++98 with GNU extensions instead.
PR: 271494
Approved by: cy (maintainer)
MFH: 2023Q2
38f5430141