jonquil@jonquil-Satellite-L755D:~/Downloads/akonadi-googledata-1.2.0/build$ cmake ..
-- The C compiler identification is GNU
-- The CXX compiler identification is unknown
-- Check for working C compiler: /usr/bin/gcc
-- Check for working C compiler: /usr/bin/gcc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
CMake Error: your CXX compiler: "CMAKE_CXX_COMPILER-NOTFOUND" was not found.   Please set CMAKE_CXX_COMPILER to a valid compiler path or name.
CMake Error at /usr/share/cmake-2.8/Modules/FindKDE4.cmake:98 (MESSAGE):
  ERROR: cmake/modules/FindKDE4Internal.cmake not found in
Call Stack (most recent call first):
  CMakeLists.txt:6 (find_package)

CMake Warning (dev) in CMakeLists.txt:
  No cmake_minimum_required command is present.  A line of code such as

    cmake_minimum_required(VERSION 2.8)

  should be added at the top of the file.  The version specified may be lower
  if you wish to support older CMake versions for this project.  For more
  information run "cmake --help-policy CMP0000".
This warning is for project developers.  Use -Wno-dev to suppress it.

-- Configuring incomplete, errors occurred!

With autotools I get this:

jonquil@jonquil-Satellite-L755D:~/Downloads/akonadi-googledata-1.2.0/build/build$ autoreconf -i -f
Can't exec "libtoolize": No such file or directory at /usr/bin/autoreconf line 196.
Use of uninitialized value in pattern match (m//) at /usr/bin/autoreconf line 196.
autoreconf: `configure.ac' or `configure.in' is required
  • what does which g++say? Obviously there is no working c++ compiler on the system.
    – Thomas
    Jun 18, 2012 at 17:34
  • It doesn't say anything. I have GCC installed if that helps.
    – xjonquilx
    Jun 18, 2012 at 17:52

3 Answers 3


Install build-essential Install build-essential if you haven't done so already. You can install it in the Software Center or with:

sudo apt-get update && sudo apt-get install build-essential
  • 4
    solved my problem!
    – kimliv
    Jun 7, 2015 at 16:41

gcc does not contain g++, these are different packages. Install g++ Install g++:

apt-get install g++
  • Now I'm getting this: CMake Error at /usr/share/cmake-2.8/Modules/FindKDE4.cmake:98 (MESSAGE): ERROR: cmake/modules/FindKDE4Internal.cmake not found in /home/jonquil/.kde/share/apps;/usr/share/kubuntu-default-settings/kde4-profile/default/share/apps;/usr/share/kde4/apps Call Stack (most recent call first): CMakeLists.txt:6 (find_package)
    – xjonquilx
    Jun 18, 2012 at 19:28
  • you are missing a build environment, it's more than just compilers, you need libraries and so on. Take a look here to find out what you need: help.ubuntu.com/community/CompilingEasyHowTo
    – Thomas
    Jun 18, 2012 at 19:39
  • I KNEW there was a package I could install in Ubuntu that would give me all the necessary packages for compiling, I just couldn't remember the name of it. Thanks!
    – xjonquilx
    Jun 18, 2012 at 19:50
  • I'm still getting the same error though. :(
    – xjonquilx
    Jun 18, 2012 at 19:51
  • The error messages hint's at kde - kde development is not included in build-essential. Don't know if there is a meta package for this.
    – Thomas
    Jun 18, 2012 at 20:00

I am aware that this is "Ask Ubuntu", but if someone with Fedora would meet this problem, the following helped me:

sudo dnf install gcc-c++
  • 1
    Your are correct in terms of the purpose of this particular forum. Please note that questions - and answers - relating to distros other than Ubuntu Linux should be posted at unix.stackexchange.com
    – CentaurusA
    Sep 26, 2018 at 2:52

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