Re: [bug #60575] Permission denied on macOS Big Sur

[Hans Eirik Bull]

It is /usr/local/include, yes. There is no include folder inside the Cellar 
folder.

ls /usr/local/include returns this:

SDL2            evhttp.h        gdbm.h          hidparser.h     libelf          
lua5.4          oniguruma.h     stm32.h         unigbrk.h       unistring
autosprintf.h   evrpc.h         gettext-po.h    hidtypes.h      libintl.h       
lzma            osxfuse         textstyle       unilbrk.h       unitypes.h
dbm.h           evutil.h        gmp.h           idn2.h          libltdl         
lzma.h          pcre2.h         textstyle.h     uniname.h       uniwbrk.h
evdns.h         ftdi.h          gmpxx.h         jq.h            libusb-1.0      
mpf2mpfr.h      pcre2posix.h    unicase.h       uninorm.h       uniwidth.h
event.h         gawkapi.h       hid.h           jv.h            ltdl.h          
mpfr.h          stlink          uniconv.h       unistdio.h      usb.h
event2          gdbm-ndbm.h     hidapi          libavrdude.h    lua             
oniggnu.h       stlink.h        unictype.h      unistr.h        utf8proc.h

Hans