/usr/bin/libmikmod-config is in libmikmod2-dev 3.1.12-2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61  | #! /bin/sh
prefix=/usr
exec_prefix=${prefix}
exec_prefix_set=no
usage="\
Usage: libmikmod-config [--prefix[=DIR]] [--exec-prefix[=DIR]] [--version] [--libs] [--cflags] [--ldadd]"
if test $# -eq 0 ; then
	echo "${usage}" 1>&2
	exit 1
fi
while test $# -gt 0 ; do
	case "$1" in
	-*=*) optarg=`echo "$1" | sed 's/[-_a-zA-Z0-9]*=//'` ;;
	*) optarg= ;;
	esac
	case $1 in
	--prefix=*)
		prefix=$optarg
		if test $exec_prefix_set = no ; then
			exec_prefix=$optarg
		fi
	;;
	--prefix)
		echo $prefix
	;;
	--exec-prefix=*)
		exec_prefix=$optarg
		exec_prefix_set=yes
	;;
	--exec-prefix)
		echo $exec_prefix
	;;
	--version)
		echo 3.1.10
	;;
	--cflags)
		includedir=${prefix}/include
		if test $includedir != /usr/include ; then
			includes=-I$includedir
		fi
		echo $includes -pthread -D_REENTRANT
	;;
	--ldadd)
		echo -pthread
	;;
	--libs)
		libdir=-L${exec_prefix}/lib
		echo $libdir -lmikmod  -ldl 
	;;
	*)
		echo "${usage}" 1>&2
		exit 1
	;;
	esac
	shift
done
 |