C compiler cannot create executables

[bracemg]

I am trying to download a VPN client and I get this when I drag the config file into the terminal:

mattbracewell@ubuntu:~$ /home/mattbracewell/configure
checking build system type... i686-pc-linux-gnulibc1
checking host system type... i686-pc-linux-gnulibc1
checking target system type... i686-pc-linux-gnulibc1
checking for a BSD-compatible install... /usr/bin/install -c
checking for -p flag to install... yes
checking whether build environment is sane... yes
checking for gawk... no
checking for mawk... mawk
checking whether make sets $(MAKE)... yes
checking for kde-config... /usr/bin/kde-config
checking where to install... /usr (as returned by kde-config)
checking for style of include used by make... GNU
checking for gcc... gcc
checking for C compiler default output file name...
configure: error: C compiler cannot create executables
See `config.log' for more details.

I don't understand why it's doing this. This has also happened when I attempted to install a couple of other things. Can anyone help? Sorry for the noob question...

[yossarianuk]

Re: C compiler cannot create executables

Hi.

Please try the following (if not already done so)

sudo apt-get install g++

- if still no joy try

sudo apt-get build-essential

- also you should d to the directory and use

./configure

[bracemg]

Re: C compiler cannot create executables

Ok it fixed that error message. It configures for a while now and then it says:

checking for X... configure: error: Can't find X libraries. Please check your installation and add the correct paths!

Any ideas? Am I missing a file in the installation package?

[yossarianuk]

Re: C compiler cannot create executables

Yes you are.

What dependencies do you need ?

Also have you checked the thing you are trying to build is not available in apt ? (what is the name of the client ?)

The two main X development packages I can think of the top of my head are (try this):-

sudo apt-get install xserver-xorg-dev

(if no joy also try)

sudo apt-get install xorg-dev

[bracemg]

Re: C compiler cannot create executables

The VPN client I need is the Cisco VPN.

I did you what you said (the second command worked) and this is the new error message I got:

checking for Qt... configure: error: Qt (>= Qt 3.3 and < 4.0) (headers and libraries) not found. Please check your installation!

[yossarianuk]

Re: C compiler cannot create executables

Hi.

You could try (i'm not 100% sure ..)

sudo apt-get install libqt3-mt-dev

- if no joy - load adept and search for packages with qt in the name (as your compiling you will need the -dev packages..)

Also have you tried KVpnc ( KVpnc is a KDE frontend for various vpn clients.)

It supports :
* Cisco-compatible VPN client (vpnc)
* IPSec (freeswan, openswan, racoon)
* Point-to-Point Tunneling Protocol (PPTP) client (pptp-linux)
* Virtual Private Network daemon (openvpn)

- to try it use (you can always remove it after..)

sudo apt-get install kvpnc

- also you can use adept to search for packages (in name and descriptions) for cisco