flex
- No release in over 8 years; stuck on version 
2.6.4and pulling the latestgitbreaks a LOT of things - Depends on itself, 
help2manandtexi2dvi - Depends on 
bison; does not work withbyacc - Touch 
doc/flex.1to preventhelp2manfrom breakingmake install-strip - glaucus does not use 
libfl(gccwill complain regardless iflibflexists or not) - Explicitly specify 
ac_cv_func_malloc_0_nonnull=yes ac_cv_func_realloc_0_nonnull=yesotherwise it will be guessed asno