--- tunip.c.orig	Tue Sep 21 18:20:40 1999
+++ tunip.c	Sun Feb 20 20:36:27 2000
@@ -54,12 +54,14 @@
 #include <blowfish.h>
 #include <cast.h>
 #include <des.h>
+#ifndef NO_IDEA
 #include <idea.h>
+#endif
 
 #include "defs.h"
 
-#define _PATH_CONF		"/etc/ipsec/pipsecd.conf"
-#define _PATH_STARTUP		"/etc/ipsec/startup"
+#define _PATH_CONF              FILE_PREFIX "/etc/ipsec/pipsecd.conf"
+#define _PATH_STARTUP           FILE_PREFIX "/etc/ipsec/startup"
 #define _PATH_DEV_RANDOM	"/dev/random"
 
 #ifdef USE_ETHERTAP
@@ -131,7 +133,9 @@
 	des_key_schedule k3;
     } des3;
     CAST_KEY cast;
+#ifndef NO_IDEA
     IDEA_KEY_SCHEDULE idea;
+#endif
 } crypt_key;
 
 typedef struct crypt_method {
@@ -304,12 +308,14 @@
 void cast_cbc_decrypt(unsigned char *iv, crypt_key *dk,
 		      unsigned char *ct, unsigned int len);
 int cast_setkey(unsigned char *b, unsigned int len, crypt_key *k);
+#ifndef NO_IDEA
 void my_idea_cbc_encrypt(unsigned char *iv, crypt_key *ek,
 			 unsigned char *t, unsigned int len);
 void my_idea_cbc_decrypt(unsigned char *iv, crypt_key *dk,
 			 unsigned char *ct, unsigned int len);
 int my_idea_set_encrypt_key(unsigned char *b, unsigned int len, crypt_key *k);
 int my_idea_set_decrypt_key(unsigned char *b, unsigned int len, crypt_key *k);
+#endif
 void my_des_cbc_encrypt(unsigned char *iv, crypt_key *ek,
 			unsigned char *t, unsigned int len);
 void my_des_cbc_decrypt(unsigned char *iv, crypt_key *dk,
@@ -379,14 +385,20 @@
 
 hash_method_t *hash_list = &hash_ripemd160;
 
+#ifndef NO_IDEA
 crypt_method_t crypt_idea = {
     NULL,
     "idea_cbc", 8, 8,
     my_idea_cbc_encrypt, my_idea_cbc_decrypt,
     my_idea_set_encrypt_key, my_idea_set_decrypt_key
 };
+#endif
 crypt_method_t crypt_cast = {
+#ifndef NO_IDEA
     &crypt_idea,
+#else
+    NULL,
+#endif
     "cast_cbc", 8, 8,
     cast_cbc_encrypt, cast_cbc_decrypt,
     cast_setkey, cast_setkey
@@ -1974,6 +1986,7 @@
     return 0;
 }
 
+#ifndef NO_IDEA
 void my_idea_cbc_encrypt(unsigned char *iv, crypt_key *ek,
 			 unsigned char *t, unsigned int len)
 {
@@ -2002,6 +2015,7 @@
     idea_set_decrypt_key(&k->idea, &k->idea);
     return 0;
 }
+#endif
 
 void my_des_cbc_encrypt(unsigned char *iv, crypt_key *ek,
 			unsigned char *t, unsigned int len)