diff --git a/tools/binutils/Makefile b/tools/binutils/Makefile
index 48c9c2a374cb..b24d9f6c4340 100644
--- a/tools/binutils/Makefile
+++ b/tools/binutils/Makefile
@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile,v 1.21 2011/10/31 08:14:44 mrg Exp $
+#	$NetBSD: Makefile,v 1.22 2012/04/15 08:37:32 mrg Exp $
 
 .include <bsd.own.mk>
 
@@ -29,6 +29,9 @@ INSTALL_TARGET+=install-gprof
 
 CCADDFLAGS=	-I${DESTDIR}/usr/include -L${DESTDIR}/lib -L${DESTDIR}/usr/lib -B${DESTDIR}/usr/lib/
 
+# Force avoiding possibly non-executable install-sh.
+CONFIGURE_ENV+= ac_cv_path_mkdir="${TOOLDIR}/bin/${MACHINE_GNU_PLATFORM}-install -d"
+
 NEWCONFIGDIR?=	${.CURDIR}/../..
 MKNATIVE?=	${.CURDIR}/mknative-binutils
 
diff --git a/tools/file/Makefile b/tools/file/Makefile
index d05a662a76f0..9453861f06c7 100644
--- a/tools/file/Makefile
+++ b/tools/file/Makefile
@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile,v 1.6 2009/05/08 17:45:22 christos Exp $
+#	$NetBSD: Makefile,v 1.7 2012/04/15 08:37:33 mrg Exp $
 #
 
 GNUHOSTDIST=	${.CURDIR}/../../external/bsd/file/dist
@@ -14,3 +14,6 @@ CONFIGURE_ARGS=	--program-prefix=${_TOOL_PREFIX} --disable-shared \
 .NOTPARALLEL:
 
 .include "${.CURDIR}/../Makefile.gnuhost"
+
+# Force avoiding possibly non-executable install-sh.
+CONFIGURE_ENV+= ac_cv_path_mkdir="${TOOLDIR}/bin/${MACHINE_GNU_PLATFORM}-install -d"
diff --git a/tools/mpc/Makefile b/tools/mpc/Makefile
index bf88523f1f02..64c9b21ff52b 100644
--- a/tools/mpc/Makefile
+++ b/tools/mpc/Makefile
@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile,v 1.1 2011/06/20 05:56:46 mrg Exp $
+#	$NetBSD: Makefile,v 1.2 2012/04/15 08:37:32 mrg Exp $
 #
 
 GNUHOSTDIST=	${.CURDIR}/../../external/lgpl2/mpc/dist
@@ -9,3 +9,6 @@ CONFIGURE_ARGS+=	--with-gmp=${TOOLDIR:Q} \
 CONFIGURE_ARGS+=--disable-shared
 
 .include "${.CURDIR}/../Makefile.gnuhost"
+
+# Force avoiding possibly non-executable install-sh.
+CONFIGURE_ENV+= ac_cv_path_mkdir="${TOOLDIR}/bin/${MACHINE_GNU_PLATFORM}-install -d"
diff --git a/tools/mpfr/Makefile b/tools/mpfr/Makefile
index 0e2fb401cddf..2d101e139d75 100644
--- a/tools/mpfr/Makefile
+++ b/tools/mpfr/Makefile
@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile,v 1.1 2011/06/20 05:56:45 mrg Exp $
+#	$NetBSD: Makefile,v 1.2 2012/04/15 08:37:32 mrg Exp $
 #
 
 GNUHOSTDIST=	${.CURDIR}/../../external/lgpl3/mpfr/dist
@@ -8,3 +8,6 @@ CONFIGURE_ARGS+=	--with-gmp=${TOOLDIR:Q}
 CONFIGURE_ARGS+=--disable-shared
 
 .include "${.CURDIR}/../Makefile.gnuhost"
+
+# Force avoiding possibly non-executable install-sh.
+CONFIGURE_ENV+= ac_cv_path_mkdir="${TOOLDIR}/bin/${MACHINE_GNU_PLATFORM}-install -d"