Compiling conntrack-tools

Compiling conntrack-tools

[Rob Sterenborg (lists)]

Hello,

I'm trying to compile conntrack-tools-1.0.1 on CentOS 6.

I confirmed that the kernel is sufficient new (2.6.32-71.el6.x86_64),
and that the kernel build parameters are set as per README.

I installed libnfnetlink and libnetfilter_conntrack in /usr/local. I
made sure /etc/ld.conf contains /usr/local/lib and ran ldconfig
(multiple times).

When running configure for conntrack-tools, it doesn't complain about
not finding either libnfnetlink or libnetfilter_conntrack:

checking for LIBNFNETLINK... yes
checking for LIBNETFILTER_CONNTRACK... yes

I'm using the following to configure conntrack-tools:

# export PKG_CONFIG_PATH="/usr/local/lib/pkgconfig"
# LIBNFNETLINK_CFLAGS="-I/usr/local/include" \
LIBNFNETLINK_LIBS="-L/usr/local/lib" \
LIBNETFILTER_CONNTRACK_CFLAGS="-I/usr/local/include" \
LIBNETFILTER_CONNTRACK_LIBS="-L/usr/local/lib" \
./configure --prefix=/usr/local

When running make, it gives an error when compiling conntrack.c:

[...]
Making all in src
make[1]: Entering directory
`/usr/local/src/netfilter/conntrack-tools-1.0.1/src'
  CC     conntrack.o
  CCLD   conntrack
conntrack.o: In function `alloc_tmpl_objects':
conntrack.c:(.text+0x71): undefined reference to `nfct_new'
conntrack.c:(.text+0x7d): undefined reference to `nfct_new'
conntrack.c:(.text+0x89): undefined reference to `nfct_new'
conntrack.c:(.text+0x95): undefined reference to `nfexp_new'
conntrack.o: In function `free_tmpl_objects':
conntrack.c:(.text+0x10d): undefined reference to `nfct_destroy'
conntrack.c:(.text+0x128): undefined reference to `nfct_destroy'
conntrack.c:(.text+0x143): undefined reference to `nfct_destroy'
conntrack.c:(.text+0x15e): undefined reference to `nfexp_destroy'
conntrack.o: In function `mark_cmp':
conntrack.c:(.text+0x932): undefined reference to `nfct_attr_is_set'
conntrack.c:(.text+0x947): undefined reference to `nfct_get_attr_u32'

[etc etc]

I checked the header files to be included; if they are installed and on
the place the include lines expect them: the files are where they are
expected.

I don't know what to check or what to do further. Can someone please
give me a hint?

Thanks in advance!


--
Rob

Re: Compiling conntrack-tools

[Jan Engelhardt]

On Wednesday 2012-01-18 17:04, Rob Sterenborg (lists) wrote:
>
>I'm using the following to configure conntrack-tools:
>
># export PKG_CONFIG_PATH="/usr/local/lib/pkgconfig"
># LIBNFNETLINK_CFLAGS="-I/usr/local/include" \
>LIBNFNETLINK_LIBS="-L/usr/local/lib" \
>LIBNETFILTER_CONNTRACK_CFLAGS="-I/usr/local/include" \
>LIBNETFILTER_CONNTRACK_LIBS="-L/usr/local/lib" \
>./configure --prefix=/usr/local

You are not specifying any libs in _LIBS to actually link in
into ./conntrack. Hence, the missing symbol reference:

>  CCLD   conntrack
>conntrack.o: In function `alloc_tmpl_objects':
>conntrack.c:(.text+0x71): undefined reference to `nfct_new'

Re: Compiling conntrack-tools

[Rob Sterenborg (lists)]

On Wed, 2012-01-18 at 17:15 +0100, Jan Engelhardt wrote:
> On Wednesday 2012-01-18 17:04, Rob Sterenborg (lists) wrote:
> >
> >I'm using the following to configure conntrack-tools:
> >
> ># export PKG_CONFIG_PATH="/usr/local/lib/pkgconfig"
> ># LIBNFNETLINK_CFLAGS="-I/usr/local/include" \
> >LIBNFNETLINK_LIBS="-L/usr/local/lib" \
> >LIBNETFILTER_CONNTRACK_CFLAGS="-I/usr/local/include" \
> >LIBNETFILTER_CONNTRACK_LIBS="-L/usr/local/lib" \
> >./configure --prefix=/usr/local
> 
> You are not specifying any libs in _LIBS to actually link in
> into ./conntrack. Hence, the missing symbol reference:
> 
> >  CCLD   conntrack
> >conntrack.o: In function `alloc_tmpl_objects':
> >conntrack.c:(.text+0x71): undefined reference to `nfct_new'

Thanks!! It works..


--
Rob

Re: Compiling conntrack-tools

[ping]

Hello,

I have the same problem. 
Could you point me how to solve the problem? 
Thank you so much. 

specifying any libs in _LIBS to actually 
link in into ./conntrack. <-- what can I do ?

--
Ping

Re: Compiling conntrack-tools

[Rob Sterenborg (Lists)]

On Sat, 2012-02-18 at 08:51 +0000, ping wrote:
> Hello,
> 
> I have the same problem. 
> Could you point me how to solve the problem? 
> Thank you so much. 
> 
> specifying any libs in _LIBS to actually 
> link in into ./conntrack. <-- what can I do ?

Did you set PKG_CONFIG_PATH when using configuring conntrack-tools?
Something like:

PKG_CONFIG_PATH=/path/to/lib/pkgconfig \
./configure ...

Where /path/to/lib/pkgconfig is the pkgconfig directory where the
libnfnetlink and libnetfilter_conntrack .pc files are installed. (You
did install these libraries, right?)
This way the correct CFLAGS, LDFLAGS and LIBS will be set automatically.


--
Rob