-aclocal --force || die "Failed to run aclocal."
-autoheader --force || die "Failed to run autoheader."
-libtoolize --force --copy || die "Failed to run libtoolize."
-automake --force --add-missing || die "Failed to run automake."
-autoconf --force || die "Failed to run autoconf."
+aclocal -I m4 || die "Failed to run aclocal."
+autoheader || die "Failed to run autoheader."
+libtoolize --copy || die "Failed to run libtoolize."
+automake --add-missing || die "Failed to run automake."
+autoconf || die "Failed to run autoconf."