Link problems in g++ but not in gcc!!

["L.Suresh" <suresh@xxxxxxxxxxxxxxx>]

Hi,
I'm having link problems when i compile my program iptables.cpp with
g++.

I have the following:
/usr/lib/libipq.a 
/usr/include/libipq.h 
/usr/share/man/man3/libipq.3.gz

I tried to compile like this.

g++ -o ipqtest iptables.cpp -lipq  <<--- Fails to compile.
g++ -o ipqtest iptables.cpp /usr/lib/libipq.a


gcc -o ipqtest iptables.c -lipq  <-- Compiles!!

I get the following error when i compile with g++. But when i change my
file name iptables.cpp to iptables.c and compile, it compiles without
any problems!!

Symbol list of libipq.a is:
libipq.o:
         U bind
         U close
         U __errno_location
         U fprintf
         U fputc
         U fputs
         U free
         U fwrite
         U getpid
00000260 T ipq_create_handle
00000550 T ipq_ctl
000003a0 T ipq_destroy_handle
00000000 D ipq_errmap
00000000 b ipq_errno
00000560 T ipq_errstr
00000460 T ipq_get_msgerr
00000470 T ipq_get_packet
00000450 T ipq_message_type
00000090 t ipq_netlink_recvfrom
00000050 t ipq_netlink_sendmsg
00000000 t ipq_netlink_sendto
00000580 T ipq_perror
00000440 T ipq_read
000003d0 T ipq_set_mode
00000480 T ipq_set_verdict
00000240 t ipq_strerror
         U malloc
         U recvfrom
         U select
         U sendmsg
         U sendto
         U socket
         U stderr
         U strerror


Error while compiling.

/tmp/ccEVoYgQ.o(.text+0xf): In function `die(ipq_handle*)':
: undefined reference to `ipq_perror(char const*)'
/tmp/ccEVoYgQ.o(.text+0x1d): In function `die(ipq_handle*)':
: undefined reference to `ipq_destroy_handle(ipq_handle*)'
/tmp/ccEVoYgQ.o(.text+0x37): In function `mains(int, char**)':
: undefined reference to `ipq_create_handle(unsigned, unsigned)'
/tmp/ccEVoYgQ.o(.text+0x6f): In function `mains(int, char**)':
: undefined reference to `ipq_set_mode(ipq_handle const*, unsigned char,
unsigned)'
/tmp/ccEVoYgQ.o(.text+0xa6): In function `mains(int, char**)':
: undefined reference to `ipq_read(ipq_handle const*, unsigned char*,
unsigned, int)'
/tmp/ccEVoYgQ.o(.text+0xd2): In function `mains(int, char**)':
: undefined reference to `ipq_message_type(unsigned char const*)'
/tmp/ccEVoYgQ.o(.text+0x104): In function `mains(int, char**)':
: undefined reference to `ipq_get_msgerr(unsigned char const*)'
/tmp/ccEVoYgQ.o(.text+0x12f): In function `mains(int, char**)':
: undefined reference to `ipq_get_packet(unsigned char const*)'
/tmp/ccEVoYgQ.o(.text+0x154): In function `mains(int, char**)':
: undefined reference to `ipq_set_verdict(ipq_handle const*, unsigned,
unsigned, unsigned, unsigned char*)'
collect2: ld returned 1 exit status


Any help would be highly appreciated.

Thanks,
L.Suresh