--- ./lib/configure.orig	2019-01-24 22:42:28.083237847 +0100
+++ ./lib/configure	2019-01-24 22:42:52.323237693 +0100
@@ -28,17 +28,17 @@
 echo "LIBS = -ldl \\" >Make.libs
     
 rm -f a.out
-c++ test_readline.cc -lreadline -ltermcap
+c++ test_readline.cc $CXXFLAGS $CPPFLAGS $LDFLAGS -lreadline
 if [ -f a.out ] ; then
     echo "using readline"
     echo "-DHAVE_LIBREADLINE \\" >>Make.ccflags
-    echo "-lreadline -ltermcap \\" >>Make.libs
+    echo "-lreadline \\" >>Make.libs
 else
-    echo "warning: either libtermcap or libreadline is missing - building without readline"
+    echo "warning: libreadline is missing - building without readline"
 fi
 rm -f a.out
 
-echo "-DUNIX -O2 -DNDEBUG -I. -I../include -I../../include -W" >>Make.ccflags
+echo "-DUNIX -O2 -DNDEBUG \$(CPPFLAGS) -I. -I../include -I../../include -W" >>Make.ccflags
 echo "" >>Make.libs
 echo "PREFIX = " $prefix >>Make.libs
 echo "" >>Make.libs