AC_CONFIG_SUBDIRS([$1])
m4_ifblank([$2], [rm -f $srcdir/$1/configure.gnu],
-[printf "#!/bin/sh
-"\$"SHELL "../$srcdir/$1/configure" $2 \""\$"@"\" > "$srcdir/$1/configure.gnu"
+[echo -e '#!/bin/sh\nexec "`dirname "'\$'0"`/configure" $2 "'\$'@"' > "$srcdir/$1/configure.gnu"
])
])