diff --git a/build b/build
index 0abff4f..d4a9b6a 100755
--- a/build
+++ b/build
@@ -8,7 +8,7 @@
 set -u -e
 
 if [ "./${0##*/}" != "${0}" ] || [ ! -f "build" ] || [ -L "build" ]; then
-	printf "You must run this in the cbmk work directory.\n" 1>&2
+	printf "You must run this in the proper work directory.\n" 1>&2
 	exit 1
 fi
 
@@ -25,7 +25,7 @@ main()
 	x_ id -u 1>/dev/null 2>/dev/null
 	[ $# -lt 1 ] && $err "Check $projectname documentation for help."
 
-	[ "$1" = "dependencies" ] && x_ install_packages $@ && cbmk_exit 0
+	[ "$1" = "dependencies" ] && x_ install_packages $@ && xbmk_exit 0
 
 	which git 1>/dev/null 2>/dev/null || \
 	    git_err "git not installed. please install git-scm."
@@ -37,7 +37,7 @@ main()
 	for cmd in initcmd git_init excmd; do
 		eval "${cmd} \$@"
 	done
-	cbmk_exit 0
+	xbmk_exit 0
 }
 
 initcmd()
@@ -51,7 +51,7 @@ initcmd()
 		script_path="script/${1}"
 		return 0 ;;
 	esac
-	cbmk_exit 0
+	xbmk_exit 0
 }
 
 install_packages()
@@ -73,7 +73,7 @@ install_packages()
 }
 
 # release archives contain .gitignore, but not .git.
-# cbmk can be run from cbmk.git, or an archive.
+# xbmk can be run from xbmk.git, or an archive.
 git_init()
 {
 	[ -L ".git" ] && $err "Reference .git is a symlink"
@@ -83,7 +83,7 @@ git_init()
 	git init || $err "${PWD}: cannot initialise Git repository"
 	git add -A . || $err "${PWD}: cannot add files to Git repository"
 	git commit -m "${projectname} ${version}" --date "${cdate}" \
-	    --author="cbmk <cbmk@canoeboot.org>" || \
+	    --author="xbmk <xbmk@example.com>" || \
 	    $err "$PWD: can't commit ${projectname}/${version}, date $cdate"
 	git tag -a "${version}" -m "${projectname} ${version}" || \
 	    $err "${PWD}: cannot git-tag ${projectname}/${version}"
@@ -97,7 +97,7 @@ excmd()
 
 mkrelease()
 {
-	export CBMK_RELEASE="y"
+	export XBMK_RELEASE="y"
 
 	vdir="release"
 	while getopts d:m: option; do
@@ -169,9 +169,9 @@ fetch_trees()
 	rm -Rf tmp .git src/u-boot/*/test/lib/strlcat.c || $err "$_xm !rm"
 }
 
-cbmk_exit()
+xbmk_exit()
 {
-	tmp_cleanup || err_ "cbmk_exit: can't rm tmpdir upon exit $1: $tmpdir"
+	tmp_cleanup || err_ "xbmk_exit: can't rm tmpdir upon exit $1: $tmpdir"
 	exit $1
 }
 
diff --git a/include/option.sh b/include/option.sh
index 1d9fb37..b2e94a6 100755
--- a/include/option.sh
+++ b/include/option.sh
@@ -33,34 +33,34 @@ setvars()
 	done
 	printf "%s\n" "${_setvars% }"
 }
-eval "$(setvars "" versiondate tmpdir _nogit version _dest board boarddir \
-    cbmk_release threads projectname relname)"
+eval "$(setvars "" versiondate tmpdir _nogit version board boarddir \
+    xbmk_release threads projectname relname)"
 
 # if "y": a coreboot target won't be built if target.cfg says release="n"
 # (this is used to exclude certain build targets from releases)
-set | grep CBMK_RELEASE 1>/dev/null 2>/dev/null || cbmk_release="n" || :
-[ -z "$cbmk_release" ] && cbmk_release="$CBMK_RELEASE"
-[ "$cbmk_release" = "n" ] || [ "$cbmk_release" = "y" ] || cbmk_release="n"
-export CBMK_RELEASE="$cbmk_release"
+set | grep XBMK_RELEASE 1>/dev/null 2>/dev/null || xbmk_release="n" || :
+[ -z "$xbmk_release" ] && xbmk_release="$XBMK_RELEASE"
+[ "$xbmk_release" = "n" ] || [ "$xbmk_release" = "y" ] || xbmk_release="n"
+export XBMK_RELEASE="$xbmk_release"
 
 set | grep TMPDIR 1>/dev/null 2>/dev/null || tmpdir_was_set="n"
 if [ "${tmpdir_was_set}" = "y" ]; then
-	[ "${TMPDIR%_*}" = "/tmp/cbmk" ] || tmpdir_was_set="n"
+	[ "${TMPDIR%_*}" = "/tmp/xbmk" ] || tmpdir_was_set="n"
 fi
 if [ "${tmpdir_was_set}" = "n" ]; then
 	export TMPDIR="/tmp"
-	tmpdir="$(mktemp -d -t cbmk_XXXXXXXX)"
+	tmpdir="$(mktemp -d -t xbmk_XXXXXXXX)"
 	export TMPDIR="${tmpdir}"
 else
 	export TMPDIR="${TMPDIR}"
 	tmpdir="${TMPDIR}"
 fi
 
-set | grep CBMK_THREADS 1>/dev/null 2>/dev/null && threads="$CBMK_THREADS"
+set | grep XBMK_THREADS 1>/dev/null 2>/dev/null && threads="$XBMK_THREADS"
 [ -z "$threads" ] && threads=1
 expr "X$threads" : "X-\{0,1\}[0123456789][0123456789]*$" \
     1>/dev/null 2>/dev/null || threads=1 # user specified a non-integer
-export CBMK_THREADS="$threads"
+export XBMK_THREADS="$threads"
 
 x_() {
 	[ $# -lt 1 ] || ${@} || $err "Unhandled non-zero exit: $@"; return 0
diff --git a/script/roms b/script/roms
index f1fb687..5c5bba6 100755
--- a/script/roms
+++ b/script/roms
@@ -61,14 +61,14 @@ main()
 	fi
 
 	bstr="directories"
-	[ "$cbmk_release" = "y" ] && bstr="tarballs"
+	[ "$xbmk_release" = "y" ] && bstr="tarballs"
 
 	[ -z "${targets}" ] && $err "No ROM images were compiled"
 	printf "\nROM images available in these %s:\n" "$bstr"
 	eval "printf \"${targets}\""
 	printf "^^ ROM images available in these %s.\n\n" "$bstr"
 
-	[ "$cbmk_release" = "y" ] && \
+	[ "$xbmk_release" = "y" ] && \
 		printf "Always run the inject command on release images!\n"
 	printf "DO NOT flash images from elf/ - please use bin/ instead.\n"
 }
@@ -99,7 +99,7 @@ handle_serprog()
 			done
 	fi
 
-	[ "$cbmk_release" = "y" ] && mktar_release "bin/serprog_$1"; return 0
+	[ "$xbmk_release" = "y" ] && mktar_release "bin/serprog_$1"; return 0
 }
 
 build_rp2040_rom()
@@ -144,7 +144,7 @@ handle_coreboot_target()
 
 	configure_target
 	[ "$board" = "$tree" ] && return 0
-	if [ "$cbmk_release" = "y" ] && [ "$release" = "n" ]; then
+	if [ "$xbmk_release" = "y" ] && [ "$release" = "n" ]; then
 		printf "Target '%s' disabled for release.\n" "$board"
 		return 0
 	fi
@@ -153,8 +153,8 @@ handle_coreboot_target()
 	build_target_mainboard
 
 	[ -d "bin/${board}" ] || return 0
-	[ "$cbmk_release" = "y" ] || targets="* bin/${board}\n${targets}"
-	[ "$cbmk_release" = "y" ] || return 0
+	[ "$xbmk_release" = "y" ] || targets="* bin/${board}\n${targets}"
+	[ "$xbmk_release" = "y" ] || return 0
 
 	targets="* bin/${relname}_$board.tar.xz\n$targets"
 	mktar_release "bin/$board"