In /usr/bin/libwmf-config line 5:
case `uname` in
     ^-----^ SC2006: Use $(...) notation instead of legacy backticked `...`.

Did you mean: 
case $(uname) in


In /usr/bin/libwmf-config line 7:
    prefix=`bash -c "type -p libwmf-config"`
           ^-- SC2006: Use $(...) notation instead of legacy backticked `...`.

Did you mean: 
    prefix=$(bash -c "type -p libwmf-config")


In /usr/bin/libwmf-config line 8:
    prefix=`dirname $prefix`
           ^---------------^ SC2006: Use $(...) notation instead of legacy backticked `...`.
                    ^-----^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
    prefix=$(dirname "$prefix")


In /usr/bin/libwmf-config line 9:
    prefix=`dirname $prefix`
           ^---------------^ SC2006: Use $(...) notation instead of legacy backticked `...`.
                    ^-----^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
    prefix=$(dirname "$prefix")


In /usr/bin/libwmf-config line 10:
    prefix=`cygpath -m "$prefix"`
           ^--------------------^ SC2006: Use $(...) notation instead of legacy backticked `...`.

Did you mean: 
    prefix=$(cygpath -m "$prefix")


In /usr/bin/libwmf-config line 33:
	exit $1
             ^-- SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
	exit "$1"


In /usr/bin/libwmf-config line 45:
  -*=*) optarg=`echo "$1" | sed 's/[-_a-zA-Z0-9]*=//'` ;;
               ^-- SC2006: Use $(...) notation instead of legacy backticked `...`.

Did you mean: 
  -*=*) optarg=$(echo "$1" | sed 's/[-_a-zA-Z0-9]*=//') ;;


In /usr/bin/libwmf-config line 89:
	echo $prefix
             ^-----^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
	echo "$prefix"


In /usr/bin/libwmf-config line 93:
	echo $exec_prefix
             ^----------^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
	echo "$exec_prefix"


In /usr/bin/libwmf-config line 99:
case `uname` in
     ^-----^ SC2006: Use $(...) notation instead of legacy backticked `...`.

Did you mean: 
case $(uname) in


In /usr/bin/libwmf-config line 101:
    wmf_cflags=`echo $wmf_cflags | sed -e "s%/usr%$prefix%"`
               ^-- SC2006: Use $(...) notation instead of legacy backticked `...`.
                     ^---------^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
    wmf_cflags=$(echo "$wmf_cflags" | sed -e "s%/usr%$prefix%")


In /usr/bin/libwmf-config line 102:
    wmf_liblflags=`echo $wmf_liblflags | sed -e "s%/usr%$prefix%"`
                  ^-- SC2006: Use $(...) notation instead of legacy backticked `...`.
                        ^------------^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
    wmf_liblflags=$(echo "$wmf_liblflags" | sed -e "s%/usr%$prefix%")


In /usr/bin/libwmf-config line 121:
	echo $includes
             ^-------^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
	echo "$includes"


In /usr/bin/libwmf-config line 137:
	echo $libdirs $my_wmf_libs
                      ^----------^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
	echo $libdirs "$my_wmf_libs"

For more information:
  https://www.shellcheck.net/wiki/SC2086 -- Double quote to prevent globbing ...
  https://www.shellcheck.net/wiki/SC2006 -- Use $(...) notation instead of le...