In /usr/bin/mkcamlp5 line 4:
OLIB=`ocamlc -where`
     ^-------------^ SC2006: Use $(...) notation instead of legacy backticked `...`.

Did you mean: 
OLIB=$(ocamlc -where)


In /usr/bin/mkcamlp5 line 28:
	j=`basename $1 .cmi`
          ^----------------^ SC2006: Use $(...) notation instead of legacy backticked `...`.
                    ^-- SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
	j=$(basename "$1" .cmi)


In /usr/bin/mkcamlp5 line 30:
	    first="`expr "$j" : '\(.\)' | tr 'a-z' 'A-Z'`"
                   ^-- SC2006: Use $(...) notation instead of legacy backticked `...`.
                                             ^---^ SC2018: Use '[:lower:]' to support accents and foreign alphabets.
                                                   ^---^ SC2019: Use '[:upper:]' to support accents and foreign alphabets.

Did you mean: 
	    first="$(expr "$j" : '\(.\)' | tr 'a-z' 'A-Z')"


In /usr/bin/mkcamlp5 line 31:
	    rest="`expr "$j" : '.\(.*\)'`"
                  ^---------------------^ SC2006: Use $(...) notation instead of legacy backticked `...`.

Did you mean: 
	    rest="$(expr "$j" : '.\(.*\)')"


In /usr/bin/mkcamlp5 line 43:
$OLIB/extract_crc -I $OLIB $INCL $INTERFACES > $CRC.ml
^---^ SC2086: Double quote to prevent globbing and word splitting.
                     ^---^ SC2086: Double quote to prevent globbing and word splitting.
                           ^---^ SC2086: Double quote to prevent globbing and word splitting.
                                 ^---------^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
"$OLIB"/extract_crc -I "$OLIB" "$INCL" "$INTERFACES" > $CRC.ml


In /usr/bin/mkcamlp5 line 45:
ocamlc -I $LIB odyl.cma camlp5.cma $CRC.ml $INCL $OPTS odyl.cmo -linkall
                                           ^---^ SC2086: Double quote to prevent globbing and word splitting.
                                                 ^---^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
ocamlc -I $LIB odyl.cma camlp5.cma $CRC.ml "$INCL" "$OPTS" odyl.cmo -linkall

For more information:
  https://www.shellcheck.net/wiki/SC2018 -- Use '[:lower:]' to support accent...
  https://www.shellcheck.net/wiki/SC2019 -- Use '[:upper:]' to support accent...
  https://www.shellcheck.net/wiki/SC2086 -- Double quote to prevent globbing ...