--- editors/staroffice5/Makefile
+++ editors/staroffice5/Makefile
@@ -31,7 +31,7 @@
 NO_BUILD=	yes
 DIST_SUBDIR=	staroffice5
 WRKSRC=		${WRKDIR}/so51inst
-TMPDIR=		${WRKDIR}/tmp
+TMPDIR?=	${WRKDIR}/tmp
 
 .include <bsd.port.pre.mk>
 
--- editors/staroffice52/Makefile
+++ editors/staroffice52/Makefile
@@ -42,7 +42,7 @@
 USE_REINPLACE=	yes
 DIST_SUBDIR=	staroffice52
 WRKSRC=		${WRKDIR}/office52
-TMPDIR=		${WRKDIR}/tmp
+TMPDIR?=	${WRKDIR}/tmp
 LD_PATH=	${TMPDIR}:${WRKSRC}:${LINUXBASE}/lib:${LINUXBASE}/usr/lib
 INSTDB.INS=	${PREFIX}/office52/program/instdb.ins
 SUNSOLVE=	${WRKDIR}/109939-03
--- editors/staroffice60/Makefile
+++ editors/staroffice60/Makefile
@@ -34,7 +34,7 @@
 NO_BUILD=	yes
 SOVERSION=	${PORTNAME}${PORTVERSION}
 WRKSRC=		${WRKDIR}/${SOVERSION}
-TMPDIR=		${WRKDIR}/tmp
+TMPDIR?=	${WRKDIR}/tmp
 LD_PATH=	${TMPDIR}:${WRKSRC}:${LINUXBASE}/lib:${LINUXBASE}/usr/lib
 INSTDB.INS=	${PREFIX}/${SOVERSION}/program/instdb.ins
 SUNSOLVE=	${WRKDIR}/112887-04
--- editors/staroffice70/Makefile
+++ editors/staroffice70/Makefile
@@ -39,7 +39,7 @@
 NO_BUILD=	yes
 SOVERSION=	${PORTNAME}${PORTVERSION}
 WRKSRC=		${WRKDIR}/${SOVERSION}
-TMPDIR=		${WRKDIR}/tmp
+TMPDIR?=	${WRKDIR}/tmp
 LD_PATH=	${TMPDIR}:${WRKSRC}:${LINUXBASE}/lib:${LINUXBASE}/usr/lib
 INSTDB.INS=	${PREFIX}/${SOVERSION}/program/instdb.ins
 SUNSOLVE=	${WRKDIR}/116518-08
--- french/staroffice52/Makefile
+++ french/staroffice52/Makefile
@@ -42,7 +42,7 @@
 USE_PERL5_BUILD=yes
 DIST_SUBDIR=	staroffice52
 WRKSRC=		${WRKDIR}/office52
-TMPDIR=		${WRKDIR}/tmp
+TMPDIR?=	${WRKDIR}/tmp
 LD_PATH=	${TMPDIR}:${WRKSRC}:${LINUXBASE}/linux/lib:${LINUXBASE}/usr/lib
 INSTDB.INS=	${PREFIX}/office52/program/instdb.ins
 SUNSOLVE=	${WRKDIR}/109939-03
--- german/staroffice52/Makefile
+++ german/staroffice52/Makefile
@@ -39,7 +39,7 @@
 NO_BUILD=	yes
 DIST_SUBDIR=	staroffice52
 WRKSRC=		${WRKDIR}/office52
-TMPDIR=		${WRKDIR}/tmp
+TMPDIR?=	${WRKDIR}/tmp
 LD_PATH=	${TMPDIR}:${WRKSRC}:${LINUXBASE}/lib:${LINUXBASE}/usr/lib
 INSTDB.INS=	${PREFIX}/office52/program/instdb.ins
 SUNSOLVE=	${WRKDIR}/109939-03
--- german/staroffice70/Makefile
+++ german/staroffice70/Makefile
@@ -39,7 +39,7 @@
 USE_XLIB=	yes
 SOVERSION=	${PORTNAME}${PORTVERSION}
 WRKSRC=		${WRKDIR}/${SOVERSION}
-TMPDIR=		${WRKDIR}/tmp
+TMPDIR?=	${WRKDIR}/tmp
 LD_PATH=	${TMPDIR}:${WRKSRC}:${LINUXBASE}/lib:${LINUXBASE}/usr/lib
 INSTDB.INS=	${PREFIX}/${SOVERSION}/program/instdb.ins
 SUNSOLVE=	${WRKDIR}/116518-08
--- portuguese/staroffice52/Makefile
+++ portuguese/staroffice52/Makefile
@@ -40,7 +40,7 @@
 USE_PERL5_BUILD=yes
 DIST_SUBDIR=	staroffice52
 WRKSRC=		${WRKDIR}/office52
-TMPDIR=		${WRKDIR}/tmp
+TMPDIR?=	${WRKDIR}/tmp
 LD_PATH=	${TMPDIR}:${WRKSRC}:${LINUXBASE}/lib:${LINUXBASE}/usr/lib
 INSTDB.INS=	${PREFIX}/office52/program/instdb.ins
 SUNSOLVE=	${WRKDIR}/109939-03
--- lang/ghc/Makefile
+++ lang/ghc/Makefile
@@ -57,7 +57,7 @@
 
 # override TMPDIR because /tmp often doesn't have enough space
 # to build some of the larger libraries.
-TMPDIR=		${WRKSRC}/tmp
+TMPDIR?=	${WRKSRC}/tmp
 MAKE_ENV+=	TMPDIR=${TMPDIR}
 
 # Just do a stage1 build
--- print/cjk-lyx/Makefile
+++ print/cjk-lyx/Makefile
@@ -56,7 +56,8 @@
 DATADIR=	${PREFIX}/share/${PKGNAMEPREFIX}${PORTNAME}
 
 # Make uic stay off the lawn
-MAKE_ENV=	TMPDIR=/tmp
+TMPDIR?=	/tmp
+MAKE_ENV=	TMPDIR="${TMPDIR}"
 
 post-extract:
 	${MV} ${WRKSRC}/po/lyx.pot ${WRKSRC}/po/${PKGNAMEPREFIX}lyx.pot
--- textproc/ispell/Makefile
+++ textproc/ispell/Makefile
@@ -29,7 +29,7 @@
 ISPELL_FILES=	${DISTNAME}.tar.gz
 EXTRA_DICT=
 
-MAKE_FLAGS=	TMPDIR=${WRKDIR} -f
+MAKE_FLAGS=	TMPDIR?=${WRKDIR} -f
 ALL_TARGET=
 
 BUILDHASH=	${WRKSRC}/buildhash