# Generate and install control file.
doit("dpkg-gencontrol","-l$changelog","-isp","-p$PACKAGE",
- "-Tdebian/$EXT\substvars","-P$TMP",@{$dh{U_PARAMS}});
+ "-Tdebian/${EXT}substvars","-P$TMP",@{$dh{U_PARAMS}});
# This chmod is only necessary if the user sets the umask to something odd.
doit("chmod","644","$TMP/DEBIAN/control");