--- libaitcfg/configure.in	2024/08/19 19:33:19	1.31.2.2
+++ libaitcfg/configure.in	2024/08/19 21:09:48	1.31.2.3
@@ -1,6 +1,6 @@
 #
 # $Author: misho $
-# $Id: configure.in,v 1.31.2.2 2024/08/19 19:33:19 misho Exp $
+# $Id: configure.in,v 1.31.2.3 2024/08/19 21:09:48 misho Exp $
 #
 AC_INIT(libaitcfg, 9.5, misho@elwix.org)
 AC_CONFIG_SRCDIR([src/aitcfg.c])
@@ -20,6 +20,13 @@ AC_CANONICAL_TARGET
 AC_CHECK_TOOL(MKDEP, mkdep, ../mkdep)
 AC_SUBST(MKDEP)
 
+if test x"${prefix}" = x"NONE"; then
+	prefix="/usr/local"
+fi
+if test x"${exec_prefix}" = x"NONE"; then
+	exec_prefix=${prefix}
+fi
+
 if test "${ac_cv_env_CFLAGS_set}" != "set"; then
 	CFLAGS="-Wall -O2 -I${includedir}"
 else
@@ -28,7 +35,7 @@ fi
 if test "${ac_cv_env_LDFLAGS_set}" = "set"; then
 	LDFLAGS="${ac_cv_env_LDFLAGS_value}"
 else
-	LDFLAGS="-L${libdir}"
+	LDFLAGS="-L$(eval echo ${libdir})"
 fi