Index: head/Makefile.inc1
===================================================================
--- head/Makefile.inc1
+++ head/Makefile.inc1
@@ -1889,7 +1889,7 @@
 _default_flavor=	-default
 .if make(*package*) && exists(${KSTAGEDIR}/kernel.meta)
 . if ${MK_DEBUG_FILES} != "no"
-_debug=-debug
+_debug=-dbg
 . endif
 create-kernel-packages:	.PHONY
 . for flavor in "" ${_debug}
@@ -1923,7 +1923,7 @@
 . for _kernel in ${BUILDKERNELS:[2..-1]}
 .  if exists(${KSTAGEDIR}/kernel.${_kernel}.meta)
 .   if ${MK_DEBUG_FILES} != "no"
-_debug=-debug
+_debug=-dbg
 .   endif
 .   for flavor in "" ${_debug}
 create-kernel-packages: create-kernel-packages-extra-flavor${flavor:C,^""$,${_default_flavor},}-${_kernel}
Index: head/release/packages/generate-ucl.sh
===================================================================
--- head/release/packages/generate-ucl.sh
+++ head/release/packages/generate-ucl.sh
@@ -61,13 +61,13 @@
 			pkgdeps="runtime"
 			_descr="$(make -C ${srctree}/release/packages -f Makefile.package -V ${outname}_DESCR)"
 			;;
-		*_lib32_development)
-			outname="${outname%%_lib32_development}"
+		*_lib32_dev)
+			outname="${outname%%_lib32_dev}"
 			_descr="32-bit Libraries, Development Files"
 			pkgdeps="${outname}"
 			;;
-		*_lib32_debug)
-			outname="${outname%%_lib32_debug}"
+		*_lib32_dbg)
+			outname="${outname%%_lib32_dbg}"
 			_descr="32-bit Libraries, Debugging Symbols"
 			pkgdeps="${outname}"
 			;;
@@ -76,13 +76,13 @@
 			_descr="32-bit Libraries"
 			pkgdeps="${outname}"
 			;;
-		*_development)
-			outname="${outname%%_development}"
+		*_dev)
+			outname="${outname%%_dev}"
 			_descr="Development Files"
 			pkgdeps="${outname}"
 			;;
-		*_debug)
-			outname="${outname%%_debug}"
+		*_dbg)
+			outname="${outname%%_dbg}"
 			_descr="Debugging Symbols"
 			pkgdeps="${outname}"
 			;;
Index: head/release/scripts/mtree-to-plist.awk
===================================================================
--- head/release/scripts/mtree-to-plist.awk
+++ head/release/scripts/mtree-to-plist.awk
@@ -70,7 +70,7 @@
 			output=output"."_kernconf
 		}
 		if ($1 ~ /^\/usr\/lib\/debug\/boot/) {
-			output=output"-debug.plist"
+			output=output"-dbg.plist"
 		} else {
 			output=output".plist"
 		}
Index: head/share/mk/bsd.incs.mk
===================================================================
--- head/share/mk/bsd.incs.mk
+++ head/share/mk/bsd.incs.mk
@@ -60,7 +60,7 @@
 
 installincludes: _${group}INS_${header:T}
 _${group}INS_${header:T}: ${header}
-	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},development} -C -o ${${group}OWN_${.ALLSRC:T}} \
+	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},dev} -C -o ${${group}OWN_${.ALLSRC:T}} \
 	    -g ${${group}GRP_${.ALLSRC:T}} -m ${${group}MODE_${.ALLSRC:T}} \
 	    ${.ALLSRC} \
 	    ${DESTDIR}${${group}DIR_${.ALLSRC:T}}/${${group}NAME_${.ALLSRC:T}}
@@ -75,10 +75,10 @@
 installincludes: _${group}INS
 _${group}INS: ${_${group}INCS}
 .if defined(${group}NAME)
-	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},development} -C -o ${${group}OWN} -g ${${group}GRP} -m ${${group}MODE} \
+	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},dev} -C -o ${${group}OWN} -g ${${group}GRP} -m ${${group}MODE} \
 	    ${.ALLSRC} ${DESTDIR}${${group}DIR}/${${group}NAME}
 .else
-	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},development} -C -o ${${group}OWN} -g ${${group}GRP} -m ${${group}MODE} \
+	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},dev} -C -o ${${group}OWN} -g ${${group}GRP} -m ${${group}MODE} \
 	    ${.ALLSRC} ${DESTDIR}${${group}DIR}/
 .endif
 .endif
@@ -89,7 +89,7 @@
 .if defined(INCSLINKS) && !empty(INCSLINKS)
 installincludes:
 .for s t in ${INCSLINKS}
-	${INSTALL_SYMLINK} ${TAG_ARGS:D${TAG_ARGS},development} ${s} ${DESTDIR}${t}
+	${INSTALL_SYMLINK} ${TAG_ARGS:D${TAG_ARGS},dev} ${s} ${DESTDIR}${t}
 .endfor
 .endif
 .endif # !target(installincludes)
Index: head/share/mk/bsd.lib.mk
===================================================================
--- head/share/mk/bsd.lib.mk
+++ head/share/mk/bsd.lib.mk
@@ -316,7 +316,7 @@
 	@${ECHO} building shared library ${SHLIB_NAME}
 	@rm -f ${SHLIB_NAME} ${SHLIB_LINK}
 .if defined(SHLIB_LINK) && !commands(${SHLIB_LINK:R}.ld) && ${MK_DEBUG_FILES} == "no"
-	@${INSTALL_LIBSYMLINK} ${TAG_ARGS:D${TAG_ARGS},development} ${SHLIB_NAME} ${SHLIB_LINK}
+	@${INSTALL_LIBSYMLINK} ${TAG_ARGS:D${TAG_ARGS},dev} ${SHLIB_NAME} ${SHLIB_LINK}
 .endif
 	${_LD:N${CCACHE_BIN}} ${LDFLAGS} ${SSP_CFLAGS} ${SOLINKOPTS} \
 	    -o ${.TARGET} -Wl,-soname,${SONAME} \
@@ -332,7 +332,7 @@
 	${OBJCOPY} --strip-debug --add-gnu-debuglink=${SHLIB_NAME}.debug \
 	    ${SHLIB_NAME_FULL} ${.TARGET}
 .if defined(SHLIB_LINK) && !commands(${SHLIB_LINK:R}.ld)
-	@${INSTALL_LIBSYMLINK} ${TAG_ARGS:D${TAG_ARGS},development} ${SHLIB_NAME} ${SHLIB_LINK}
+	@${INSTALL_LIBSYMLINK} ${TAG_ARGS:D${TAG_ARGS},dev} ${SHLIB_NAME} ${SHLIB_LINK}
 .endif
 
 ${SHLIB_NAME}.debug: ${SHLIB_NAME_FULL}
@@ -428,11 +428,11 @@
 .ORDER: beforeinstall _libinstall
 _libinstall:
 .if defined(LIB) && !empty(LIB) && ${MK_INSTALLLIB} != "no"
-	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},development} -C -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
+	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},dev} -C -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
 	    ${_INSTALLFLAGS} lib${LIB_PRIVATE}${LIB}.a ${DESTDIR}${_LIBDIR}/
 .endif
 .if ${MK_PROFILE} != "no" && defined(LIB) && !empty(LIB)
-	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},development} -C -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
+	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},dev} -C -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
 	    ${_INSTALLFLAGS} lib${LIB_PRIVATE}${LIB}_p.a ${DESTDIR}${_LIBDIR}/
 .endif
 .if defined(SHLIB_NAME)
@@ -441,15 +441,15 @@
 	    ${SHLIB_NAME} ${DESTDIR}${_SHLIBDIR}/
 .if ${MK_DEBUG_FILES} != "no"
 .if defined(DEBUGMKDIR)
-	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},debug} -d ${DESTDIR}${DEBUGFILEDIR}/
+	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},dbg} -d ${DESTDIR}${DEBUGFILEDIR}/
 .endif
-	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},debug} -o ${LIBOWN} -g ${LIBGRP} -m ${DEBUGMODE} \
+	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},dbg} -o ${LIBOWN} -g ${LIBGRP} -m ${DEBUGMODE} \
 	    ${_INSTALLFLAGS} \
 	    ${SHLIB_NAME}.debug ${DESTDIR}${DEBUGFILEDIR}/
 .endif
 .if defined(SHLIB_LINK)
 .if commands(${SHLIB_LINK:R}.ld)
-	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},development} -S -C -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
+	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},dev} -S -C -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
 	    ${_INSTALLFLAGS} ${SHLIB_LINK:R}.ld \
 	    ${DESTDIR}${_LIBDIR}/${SHLIB_LINK}
 .for _SHLIB_LINK_LINK in ${SHLIB_LDSCRIPT_LINKS}
@@ -458,14 +458,14 @@
 .else
 .if ${_SHLIBDIR} == ${_LIBDIR}
 .if ${SHLIB_LINK:Mlib*}
-	${INSTALL_RSYMLINK} ${TAG_ARGS:D${TAG_ARGS},development} ${SHLIB_NAME} ${DESTDIR}${_LIBDIR}/${SHLIB_LINK}
+	${INSTALL_RSYMLINK} ${TAG_ARGS:D${TAG_ARGS},dev} ${SHLIB_NAME} ${DESTDIR}${_LIBDIR}/${SHLIB_LINK}
 .else
 	${INSTALL_RSYMLINK} ${TAG_ARGS} ${DESTDIR}${_SHLIBDIR}/${SHLIB_NAME} \
 	    ${DESTDIR}${_LIBDIR}/${SHLIB_LINK}
 .endif
 .else
 .if ${SHLIB_LINK:Mlib*}
-	${INSTALL_RSYMLINK} ${TAG_ARGS:D${TAG_ARGS},development} ${DESTDIR}${_SHLIBDIR}/${SHLIB_NAME} \
+	${INSTALL_RSYMLINK} ${TAG_ARGS:D${TAG_ARGS},dev} ${DESTDIR}${_SHLIBDIR}/${SHLIB_NAME} \
 	    ${DESTDIR}${_LIBDIR}/${SHLIB_LINK}
 .else
 	${INSTALL_RSYMLINK} ${TAG_ARGS} ${DESTDIR}${_SHLIBDIR}/${SHLIB_NAME} \
@@ -480,7 +480,7 @@
 .endif # SHLIB_LINK
 .endif # SHIB_NAME
 .if defined(INSTALL_PIC_ARCHIVE) && defined(LIB) && !empty(LIB) && ${MK_TOOLCHAIN} != "no"
-	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},development} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
+	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},dev} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
 	    ${_INSTALLFLAGS} lib${LIB}_pic.a ${DESTDIR}${_LIBDIR}/
 .endif
 .endif # !defined(INTERNALLIB)
Index: head/share/mk/bsd.prog.mk
===================================================================
--- head/share/mk/bsd.prog.mk
+++ head/share/mk/bsd.prog.mk
@@ -270,9 +270,9 @@
 	    ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${BINDIR}/${PROGNAME}
 .if ${MK_DEBUG_FILES} != "no"
 .if defined(DEBUGMKDIR)
-	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},debug} -d ${DESTDIR}${DEBUGFILEDIR}/
+	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},dbg} -d ${DESTDIR}${DEBUGFILEDIR}/
 .endif
-	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},debug} -o ${BINOWN} -g ${BINGRP} -m ${DEBUGMODE} \
+	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},dbg} -o ${BINOWN} -g ${BINGRP} -m ${DEBUGMODE} \
 	    ${PROGNAME}.debug ${DESTDIR}${DEBUGFILEDIR}/${PROGNAME}.debug
 .endif
 .endif
Index: head/sys/conf/kmod.mk
===================================================================
--- head/sys/conf/kmod.mk
+++ head/sys/conf/kmod.mk
@@ -338,7 +338,7 @@
 	${INSTALL} -T release -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
 	    ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}/
 .if defined(DEBUG_FLAGS) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
-	${INSTALL} -T debug -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
+	${INSTALL} -T dbg -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
 	    ${_INSTALLFLAGS} ${PROG}.debug ${DESTDIR}${KERN_DEBUGDIR}${KMODDIR}/
 .endif