diff --git a/vars/autoconf_2_64_host.vars b/vars/autoconf_2_64_host.vars
index f8f4b4f..35a17bb 100644
--- a/vars/autoconf_2_64_host.vars
+++ b/vars/autoconf_2_64_host.vars
@@ -11,16 +11,16 @@ pkg_autoconf_2_64_host_install_make_post() {
 		rtl_fileop mv "${_bin_fname}" "${PKG_DESTDIR}/libexec/autoconf-${PKG_VERSION}" || return 1;
 		cat >"${_bin_fname}-${PKG_VERSION}" <<EOF
 #!/bin/sh
-export ACLOCAL="\${0%/*}/aclocal-1.11";
-export AC_MACRODIR="\${0%/*}/../share/autoconf-${PKG_VERSION}";
-export AUTOCONF="\${0%/*}/../libexec/autoconf-${PKG_VERSION}/autoconf";
-export AUTOHEADER="\${0%/*}/../libexec/autoconf-${PKG_VERSION}/autoheader";
-export AUTOM4TE="\${0%/*}/../libexec/autoconf-${PKG_VERSION}/autom4te";
-export AUTOM4TE_CFG="\${0%/*}/../share/autoconf-${PKG_VERSION}/autom4te.cfg";
-export autom4te_perllibdir="\${0%/*}/../share/autoconf-${PKG_VERSION}";
-export AUTOMAKE="\${0%/*}/automake-1.11";
-export AUTOPOINT="\${0%/*}/../libexec/autoconf-${PKG_VERSION}/autopoint";
-export LIBTOOLIZE="\${0%/*}/../libexec/autoconf-${PKG_VERSION}/libtoolize";
+export ACLOCAL="\${ACLOCAL:-\${0%/*}/aclocal-1.11}";
+export AC_MACRODIR="\${AC_MACRODIR:-\${0%/*}/../share/autoconf-${PKG_VERSION}}";
+export AUTOCONF="\${AUTOCONF:-\${0%/*}/../libexec/autoconf-${PKG_VERSION}/autoconf}";
+export AUTOHEADER="\${AUTOHEADER:-\${0%/*}/../libexec/autoconf-${PKG_VERSION}/autoheader}";
+export AUTOM4TE="\${AUTOM4TE:-\${0%/*}/../libexec/autoconf-${PKG_VERSION}/autom4te}";
+export AUTOM4TE_CFG="\${AUTOM4TE_CFG:-\${0%/*}/../share/autoconf-${PKG_VERSION}/autom4te.cfg}";
+export autom4te_perllibdir="\${autom4te_perllibdir:-\${0%/*}/../share/autoconf-${PKG_VERSION}}";
+export AUTOMAKE="\${AUTOMAKE:-\${0%/*}/automake-1.11}";
+export AUTOPOINT="\${AUTOPOINT:-\${0%/*}/../libexec/autoconf-${PKG_VERSION}/autopoint}";
+export LIBTOOLIZE="\${LIBTOOLIZE:-\${0%/*}/../libexec/autoconf-${PKG_VERSION}/libtoolize}";
 exec "\${0%/*}/../libexec/autoconf-${PKG_VERSION}/${_bin_fname##*/}" "\${@}";
 EOF
 		[ "${?}" -ne 0 ] && return 1;