Static compilation and linking

[gsbabil]

Hi Everyone,

I took a stab at static compiling sngrep, but failed at the linking stage.

I can get past the configure step with the following:

  $ LDFLAGS='-static -lncursesw' ./configure --enable-unicode

  ... ... ...
  ... ... ...

  configure: sngrep configure finished
  configure: ======================================================
  configure: GnuTLS Support               : no
  configure: OpenSSL Support              : no
  configure: Unicode Support              : yes
  configure: Perl Expressions Support     : no
  configure: IPv6 Support                 : no
  configure: EEP Support                  : no
  configure: ======================================================

But then make fails as shown below:

  $ LDFLAGS='-static -lncursesw' make V=1

  ... ... ...
  ... ... ...

  Making all in src
  make[1]: Entering directory '/home/babil/static-bins/sngrep/src'
  make  all-am
  make[2]: Entering directory '/home/babil/static-bins/sngrep/src'

  gcc   -g -O2   -o sngrep sngrep-capture.o    sngrep-address.o
    sngrep-packet.o sngrep-sip.o sngrep-sip_call.o sngrep-sip_msg.o
    sngrep-sip_attr.o sngrep-main.o sngrep-option.o sngrep-group.o
    sngrep-filter.o sngrep-keybinding.o sngrep-media.o
    sngrep-setting.o sngrep-rtp.o sngrep-util.o sngrep-hash.o
    sngrep-vector.o curses/sngrep-ui_panel.o curses/sngrep-scrollbar.o
    curses/sngrep-ui_manager.o curses/sngrep-ui_call_list.o
    curses/sngrep-ui_call_flow.o curses/sngrep-ui_call_raw.o
    curses/sngrep-ui_stats.o curses/sngrep-ui_filter.o
    curses/sngrep-ui_save.o curses/sngrep-ui_msg_diff.o
    curses/sngrep-ui_column_select.o curses/sngrep-ui_settings.o
    -lmenuw -lformw -lpanelw -lpcap -lpthread

  /usr/bin/ld: curses/sngrep-ui_manager.o: undefined reference to
    symbol 'doupdate@@NCURSESW_5.1.20000708'

  //lib/x86_64-linux-gnu/libncursesw.so.5: error adding symbols: DSO
    missing from command line

  collect2: error: ld returned 1 exit status

  Makefile:459: recipe for target 'sngrep' failed
  make[2]: *** [sngrep] Error 1
  make[2]: Leaving directory '/home/babil/static-bins/sngrep/src'
  Makefile:337: recipe for target 'all' failed
  make[1]: *** [all] Error 2
  make[1]: Leaving directory '/home/babil/static-bins/sngrep/src'
  Makefile:358: recipe for target 'all-recursive' failed
  make: *** [all-recursive] Error 1

Any help to static-compile sngrep will be greatly appreciated.

Thanks a lot.

[Kaian]

Hi @gsbabil

I have compiled sngrep statically in my gentoo box without problem using the following:

$ ./bootstrap.sh
$ CFLAGS=-static ./configure --enable-unicode
[...]
configure: sngrep configure finished                                
configure: ======================================================   
configure: GnuTLS Support               : no        
configure: OpenSSL Support              : no            
configure: Unicode Support              : yes       
configure: Perl Expressions Support     : no              
configure: IPv6 Support                 : no               
configure: EEP Support                  : no               
configure: ======================================================   

$ V=1 make
gcc   -static   -o sngrep sngrep-capture.o    sngrep-address.o sngrep-packet.o
 sngrep-sip.o sngrep-sip_call.o sngrep-sip_msg.o sngrep-sip_attr.o
 sngrep-main.o sngrep-option.o sngrep-group.o sngrep-filter.o sngrep-keybinding.o
 sngrep-media.o sngrep-setting.o sngrep-rtp.o sngrep-util.o sngrep-hash.o
 sngrep-vector.o curses/sngrep-ui_panel.o curses/sngrep-scrollbar.o 
curses/sngrep-ui_manager.o curses/sngrep-ui_call_list.o curses/sngrep-ui_call_flow.o
curses/sngrep-ui_call_raw.o curses/sngrep-ui_stats.o curses/sngrep-ui_filter.o
curses/sngrep-ui_save.o curses/sngrep-ui_msg_diff.o curses/sngrep-ui_column_select.o 
curses/sngrep-ui_settings.o -lmenuw -lformw -lpanelw -lncursesw -lpcap -lpthread

$ ldd src/sngrep
    not a dynamic executable

$ src/sngrep -I tests/aaa.pcap -N
Dialog count: 6

So the problem must be elsewhere in your build environment. Your gcc doesn't even have the -static parameter. Also take into account that you need the static version (.a) of every required library to create a static binary, in my box for example:

$ ls -1 /usr/lib64/libpcap*.a /usr/lib64/lib*w.a
/usr/lib64/libformw.a
/usr/lib64/libmenuw.a
/usr/lib64/libncurses++w.a
/usr/lib64/libncursesw.a
/usr/lib64/libnssckfw.a
/usr/lib64/libpanelw.a
/usr/lib64/libpcap.a

Even without the -static flag, your dynamic linking build is failing. The error suggests the ncurses version (5.1 from year 2000?) you are using does not have doupdate function. Not sure what is the minimum required version of ncurses to compile sngrep to be honest. The oldest version I have compiled the code is ncurses 5.7 from debian squeeze.

Regards!!

[gsbabil]

Static compilation with Unicode

Hi @Kaian,

Thanks a lot for your reply. With your hints, I was able to static-compile using the following on my system:

  $ ./bootstrap.sh

  $ CFLAGS='-static' \
      LIBS='-ltinfo -lgpm' \
      ./configure --enable-unicode

  $ make clean && make V=1

  $ ldd src/sngrep
          not a dynamic executable

  $ src/sngrep -I tests/aaa.pcap -N
  Dialog count: 6

It was interesting that I needed to add libtinfo and libgpm for the linking stage to be successful on my system (Ubuntu 16.04 LTS), while you didn't need it on Gentoo.

For the sake of completeness, I'm adding my system and library details below. Hopefully others reading this will find these useful.

As you'll see below, I'm on a fairly recent system (Ubuntu 16.04.4 LTS), and my libncurses* versions all fairly recent!

  $ cat /etc/lsb-release

    DISTRIB_ID=Ubuntu
    DISTRIB_RELEASE=16.04
    DISTRIB_CODENAME=xenial
    DISTRIB_DESCRIPTION="Ubuntu 16.04.4 LTS"

  $ dpkg -l | awk '/libncurses/{print $2, $3}'

    libncurses5:amd64           6.0+20160213-1ubuntu1
    libncurses5-dev:amd64       6.0+20160213-1ubuntu1
    libncursesw5:amd64          6.0+20160213-1ubuntu1
    libncursesw5-dev:amd64      6.0+20160213-1ubuntu1

Thanks a lot once again.

[gsbabil]

Static compilation with OpenSSL

Hi @Kaian,

It appears that static-compiling with OpenSSL additional require libcrypto and libdl to be specified under LIBS on Ubuntu 16.04!

Hope this helps someone. Thank you!

  $ cat /etc/lsb-release

    DISTRIB_ID=Ubuntu
    DISTRIB_RELEASE=16.04
    DISTRIB_CODENAME=xenial
    DISTRIB_DESCRIPTION="Ubuntu 16.04.4 LTS"

  $ CFLAGS=-static \
      LIBS=-lssl -ltinfo -lgpm -lcrypto -ldl \
      ./configure --with-openssl --enable-unicode

  $ make clean && make V=1

  $ ldd src/sngrep
          not a dynamic executable

  $ src/sngrep -I tests/aaa.pcap -N
  Dialog count: 6

[Kaian]

Hi @gsbabil

Glad you managed to compile it successfully!!

You may need a couple extra libraries because your ncurses libraries are compiled with that dependencies, and as I mentioned in the previous comment, you need all the static versions of the libraries and their dependencies. In my box, ncurses has gmp disabled and tinfo is compiled inside the ncurses code, so I just needed the libncurses dependency.

For the record, if the library has a .pc file pkg-config has a --static flag that can help discovering depedencies:

$ pkg-config --static --libs openssl
  -lssl -ldl -lz -lcrypto -ldl -lz

The project wiki is open to everyone, feel free to add there whatever information you feel could be helpful for anyone.

We can also close this issue if you don't need further assistance, feel free to reopen if you want to add extra information.

Regards!

[gsbabil]

Hi @Kaian,

Thanks a lot.

I just sent a pull request here to add static-compilation via the configure script i.e. --enable-static=yes, adding further checks for OpenSSL, GnuTLS, Unicode support etc.

Please have a look. Thank you.