[Openswan Users] error compiling source code

[ubi_maior at infinito.it]

Hi All,
I get this error if I "make programs" with source code:

[omissis]
cc -g  -DKLIPS -DSCANDIR_HAS_CONST 
-I/usr/src/openswan-2.6.23/ports/linux/include 
-I/usr/src/openswan-2.6.23/ports/linux/include 
-I/usr/src/openswan-2.6.23/ports/linux/include  
-I/usr/src/openswan-2.6.23/programs/pluto/linux26
-I/usr/src/openswan-2.6.23/include -I/usr/src/openswan-2.6.23/lib/libcrypto
-I/usr/src/openswan-2.6.23/linux/include   -DIPSECPOLICY  -DUSE_KEYRR  
-DDYNAMICDNS -DNETKEY_SUPPORT -DKERNEL26_HAS_KAME_DUPLICATES -DPFKEY
-DX509_PLUTO -DUSE_TWOFISH -DUSE_BLOWFISH -DUSE_SERPENT -DUSE_SHA2  -DPLUTO
-DKLIPS -DHAVE_UDPFROMTO -DPFKEY   -DKLIPS_MAST   -DBUILDER="root at green"
-DDEBUG -DGCC_LINT -DUSE_AES -DUSE_3DES -DIKE_ALG -DKERNEL_ALG -DAGGRESSIVE
-DXAUTH -DMODECFG -DMODECFG_DNSWINS  -DNAT_TRAVERSAL
-DI_KNOW_TRANSPORT_MODE_HAS_SECURITY_CONCERN_BUT_I_WANT_IT      
-DSHARED_SECRETS_FILE="/etc/ipsec.secrets"
-DPOLICYGROUPSDIR="/etc/ipsec.d/policies"
-DPERPEERLOGDIR="/var/log/pluto/peer" -g -Wall -W -Wmissing-prototypes
-Wpointer-arith -Wbad-function-cast -Wcast-qual -Wmissing-declarations
-Wwrite-strings -Wstrict-prototypes   -c
/usr/src/openswan-2.6.23/programs/pluto/plutomain.c
/usr/src/openswan-2.6.23/programs/pluto/plutomain.c: In function 'main':
/usr/src/openswan-2.6.23/programs/pluto/plutomain.c:868: error: 'vc'
undeclared (first use in this function)
/usr/src/openswan-2.6.23/programs/pluto/plutomain.c:868: error: (Each
undeclared identifier is reported only once
/usr/src/openswan-2.6.23/programs/pluto/plutomain.c:868: error: for each
function it appears in.)
make[3]: *** [plutomain.o] Error 1
make[3]: Leaving directory
`/usr/src/openswan-2.6.23/OBJ.linux.i386/programs/pluto'
make[2]: *** [programs] Error 1
make[2]: Leaving directory
`/usr/src/openswan-2.6.23/OBJ.linux.i386/programs'
make[1]: *** [programs] Error 1
make[1]: Leaving directory `/usr/src/openswan-2.6.23/OBJ.linux.i386'
make: *** [programs] Error 2

Could you help me telling what is wrong?

Thank You

Best Regards