I tried to build Linux MultiMedia studio from the source of the SourceForge git:// repository under Ubuntu 12.04 LTS 32b:

git clone git://lmms.git.sourceforge.net/gitroot/lmms/lmms
cd lmms
git checkout

First I tried to install all the required libraries and then I cmaked. - That's what happened on cmake (errors occurred!):

[DIR]lmms/build$ cmake ..
-- The C compiler identification is GNU
-- The CXX compiler identification is GNU
-- 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
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
PROCESSOR: i686
Machine: i686-linux-gnu
-- Target host is 32 bit
-- Looking for include files LMMS_HAVE_STDINT_H
-- Looking for include files LMMS_HAVE_STDINT_H - found
-- Looking for include files LMMS_HAVE_STDBOOL_H
-- Looking for include files LMMS_HAVE_STDBOOL_H - found
-- Looking for include files LMMS_HAVE_STDLIB_H
-- Looking for include files LMMS_HAVE_STDLIB_H - found
-- Looking for include files LMMS_HAVE_PTHREAD_H
-- Looking for include files LMMS_HAVE_PTHREAD_H - found
-- Looking for include files LMMS_HAVE_SEMAPHORE_H
-- Looking for include files LMMS_HAVE_SEMAPHORE_H - found
-- Looking for include files LMMS_HAVE_UNISTD_H
-- Looking for include files LMMS_HAVE_UNISTD_H - found
-- Looking for include files LMMS_HAVE_SYS_TYPES_H
-- Looking for include files LMMS_HAVE_SYS_TYPES_H - found
-- Looking for include files LMMS_HAVE_SYS_IPC_H
-- Looking for include files LMMS_HAVE_SYS_IPC_H - found
-- Looking for include files LMMS_HAVE_SYS_SHM_H
-- Looking for include files LMMS_HAVE_SYS_SHM_H - found
-- Looking for include files LMMS_HAVE_SYS_TIME_H
-- Looking for include files LMMS_HAVE_SYS_TIME_H - found
-- Looking for include files LMMS_HAVE_SYS_WAIT_H
-- Looking for include files LMMS_HAVE_SYS_WAIT_H - found
-- Looking for include files LMMS_HAVE_SYS_SELECT_H
-- Looking for include files LMMS_HAVE_SYS_SELECT_H - found
-- Looking for include files LMMS_HAVE_STDARG_H
-- Looking for include files LMMS_HAVE_STDARG_H - found
-- Looking for include files LMMS_HAVE_SIGNAL_H
-- Looking for include files LMMS_HAVE_SIGNAL_H - found
-- Looking for include files LMMS_HAVE_SCHED_H
-- Looking for include files LMMS_HAVE_SCHED_H - found
-- Looking for include files LMMS_HAVE_SYS_SOUNDCARD_H
-- Looking for include files LMMS_HAVE_SYS_SOUNDCARD_H - found
-- Looking for include files LMMS_HAVE_SOUNDCARD_H
-- Looking for include files LMMS_HAVE_SOUNDCARD_H - not found.
-- Looking for include files LMMS_HAVE_FCNTL_H
-- Looking for include files LMMS_HAVE_FCNTL_H - found
-- Looking for include files LMMS_HAVE_SYS_IOCTL_H
-- Looking for include files LMMS_HAVE_SYS_IOCTL_H - found
-- Looking for include files LMMS_HAVE_CTYPE_H
-- Looking for include files LMMS_HAVE_CTYPE_H - found
-- Looking for include files LMMS_HAVE_STRING_H
-- Looking for include files LMMS_HAVE_STRING_H - found
-- Looking for include files LMMS_HAVE_PROCESS_H
-- Looking for include files LMMS_HAVE_PROCESS_H - not found.
-- Looking for include files LMMS_HAVE_LOCALE_H
-- Looking for include files LMMS_HAVE_LOCALE_H - found
-- Looking for Q_WS_X11
-- Looking for Q_WS_X11 - found
-- Looking for Q_WS_WIN
-- Looking for Q_WS_WIN - not found.
-- Looking for Q_WS_QWS
-- Looking for Q_WS_QWS - not found.
-- Looking for Q_WS_MAC
-- Looking for Q_WS_MAC - not found.
-- Found Qt4: /usr/bin/qmake (found suitable version "4.8.1", required is "4.6.0;COMPONENTS;QtCore;QtGui;QtXml;QtNetwork")
-- Found Qt translations in /usr/share/qt4/translations
-- checking for module 'sndfile>=1.0.11'
--   found sndfile, version 1.0.25
-- Looking for include files CMAKE_HAVE_PTHREAD_H
-- Looking for include files CMAKE_HAVE_PTHREAD_H - found
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE 
-- Found libzip: /usr/lib/libzip.so
-- Found libflac++: /usr/lib/i386-linux-gnu/libFLAC.so;/usr/lib/i386-linux-gnu/libFLAC++.so
-- Found STK: /usr/lib/i386-linux-gnu/libstk.so
-- checking for module 'portaudio-2.0'
--   found portaudio-2.0, version 19
-- Found Portaudio: portaudio;asound;m;pthread
-- checking for module 'libpulse'
--   found libpulse, version 1.1
-- Found PulseAudio Simple: /usr/lib/i386-linux-gnu/libpulse.so
-- Looking for vorbis_bitrate_addblock in vorbis
-- Looking for vorbis_bitrate_addblock in vorbis - found
-- Found OggVorbis: /usr/lib/i386-linux-gnu/libogg.so;/usr/lib/i386-linux-gnu/libvorbis.so;/usr/lib/i386-linux-gnu/libvorbisfile.so;/usr/lib/i386-linux-gnu/libvorbisenc.so
-- Looking for snd_seq_create_simple_port in asound
-- Looking for snd_seq_create_simple_port in asound - found
-- Found ALSA: /usr/lib/i386-linux-gnu/libasound.so
-- Looking for include files LMMS_HAVE_MACHINE_SOUNDCARD_H
-- Looking for include files LMMS_HAVE_MACHINE_SOUNDCARD_H - not found.
-- Looking for include files LMMS_HAVE_LINUX_AWE_VOICE_H
-- Looking for include files LMMS_HAVE_LINUX_AWE_VOICE_H - not found.
-- Looking for include files LMMS_HAVE_AWE_VOICE_H
-- Looking for include files LMMS_HAVE_AWE_VOICE_H - not found.
-- Looking for include files LMMS_HAVE__USR_SRC_SYS_I386_ISA_SOUND_AWE_VOICE_H
-- Looking for include files LMMS_HAVE__USR_SRC_SYS_I386_ISA_SOUND_AWE_VOICE_H - not found.
-- Looking for include files LMMS_HAVE__USR_SRC_SYS_GNU_I386_ISA_SOUND_AWE_VOICE_H
-- Looking for include files LMMS_HAVE__USR_SRC_SYS_GNU_I386_ISA_SOUND_AWE_VOICE_H - not found.
-- Looking for C++ include sys/asoundlib.h
-- Looking for C++ include sys/asoundlib.h - found
-- Looking for C++ include alsa/asoundlib.h
-- Looking for C++ include alsa/asoundlib.h - found
-- Looking for snd_pcm_resume in asound
-- Looking for snd_pcm_resume in asound - found
-- checking for module 'jack>=0.77'
--   found jack, version 0.121.2
-- checking for module 'fftw3f>=3.0.0'
--   package 'fftw3f>=3.0.0' not found
CMake Error at /usr/share/cmake-2.8/Modules/FindPkgConfig.cmake:266 (message):
  A required package was not found
Call Stack (most recent call first):
  /usr/share/cmake-2.8/Modules/FindPkgConfig.cmake:320 (_pkg_check_modules_internal)
  CMakeLists.txt:309 (PKG_CHECK_MODULES)


-- checking for module 'fluidsynth>=1.0.7'
--   found fluidsynth, version 1.1.5
-- Looking for include files LMMS_HAVE_LV2CORE
-- Looking for include files LMMS_HAVE_LV2CORE - found
-- Looking for include files LMMS_HAVE_SLV2_SCALEPOINTS_H
-- Looking for include files LMMS_HAVE_SLV2_SCALEPOINTS_H - not found.
-- Looking for slv2_world_new in slv2
-- Looking for slv2_world_new in slv2 - found
-- Looking for librdf_new_world in rdf
-- Looking for librdf_new_world in rdf - found
-- Looking for wine_init in wine
-- Looking for wine_init in wine - found
-- Looking for C++ include windows.h
-- Looking for C++ include windows.h - found
-- checking for module 'samplerate>=0.1.7'
--   package 'samplerate>=0.1.7' not found
-- Performing Test HAVE_LRINT
-- Performing Test HAVE_LRINT - Success
-- Performing Test HAVE_LRINTF
-- Performing Test HAVE_LRINTF - Success
-- Performing Test CPU_CLIPS_POSITIVE
-- Performing Test CPU_CLIPS_POSITIVE - Failed
-- Performing Test CPU_CLIPS_NEGATIVE
-- Performing Test CPU_CLIPS_NEGATIVE - Success
-- Looking for XOpenDisplay in /usr/lib/i386-linux-gnu/libX11.so;/usr/lib/i386-linux-gnu/libXext.so
-- Looking for XOpenDisplay in /usr/lib/i386-linux-gnu/libX11.so;/usr/lib/i386-linux-gnu/libXext.so - found
-- Looking for gethostbyname
-- Looking for gethostbyname - found
-- Looking for connect
-- Looking for connect - found
-- Looking for remove
-- Looking for remove - found
-- Looking for shmat
-- Looking for shmat - found
-- Looking for IceConnectionNumber in ICE
-- Looking for IceConnectionNumber in ICE - found
-- Found X11: /usr/lib/i386-linux-gnu/libX11.so
-- Found Freetype: /usr/lib/i386-linux-gnu/libfreetype.so 

Installation Summary
--------------------
* Install Directory           : /usr/local
* Use system's libsamplerate  : 

Supported audio interfaces
--------------------------
* ALSA                        : OK
* JACK                        : OK
* OSS                         : OK
* PortAudio                   : OK
* PulseAudio                  : OK
* SDL                         : OK

Supported MIDI interfaces
-------------------------
* ALSA                        : OK
* OSS                         : OK
* WinMM                       : <not supported on this platform>

Supported file formats for project export
-----------------------------------------
* WAVE                        : OK
* OGG/VORBIS                  : OK
* FLAC                        : OK

Optional plugins
----------------
* SoundFont2 player           : OK
* Stk Mallets                 : OK
* VST-instrument hoster       : OK
* VST-effect hoster           : OK
* LV2 hoster                  : OK
* CALF LADSPA plugins         : OK
* CAPS LADSPA plugins         : OK
* CMT LADSPA plugins          : OK
* TAP LADSPA plugins          : OK
* SWH LADSPA plugins          : OK
* FL .zip import              : OK


-----------------------------------------------------------------
IMPORTANT:
after installing missing packages, remove CMakeCache.txt before
running cmake again!
-----------------------------------------------------------------



-- Configuring incomplete, errors occurred!

Here are some parts the contents of my lmms/build/CMakeCache.txt file:

# This is the CMakeCache file.
# For build in directory: /home/jk/Downloads/lmms-git/lmms/build
# It was generated by CMake: /usr/bin/cmake
# You can edit this file to change values found and used by cmake.
# If you do not want to change any of the values, simply exit the editor.
# If you do want to change a value, simply edit, save, and exit the editor.
# The syntax for the file is as follows:
# KEY:TYPE=VALUE
# KEY is the name of a variable in the cache.
# TYPE is a hint to GUI's for the type of VALUE, DO NOT EDIT TYPE!.
# VALUE is the current value for the KEY.

########################
# EXTERNAL cache entries
########################

//Path to a file.
ALSA_INCLUDES:PATH=/usr/include

//Path to a library.
ASOUND_LIBRARY:FILEPATH=/usr/lib/i386-linux-gnu/libasound.so

//Path to a program.
CMAKE_AR:FILEPATH=/usr/bin/ar

//Choose the type of build, options are: None(CMAKE_CXX_FLAGS or
// CMAKE_C_FLAGS used) Debug Release RelWithDebInfo MinSizeRel.
CMAKE_BUILD_TYPE:STRING=

//Enable/Disable color output during build.
CMAKE_COLOR_MAKEFILE:BOOL=ON

//CXX compiler.
CMAKE_CXX_COMPILER:FILEPATH=/usr/bin/c++

//Flags used by the compiler during all build types.
CMAKE_CXX_FLAGS:STRING=

//Flags used by the compiler during debug builds.
CMAKE_CXX_FLAGS_DEBUG:STRING=-g

//Flags used by the compiler during release minsize builds.
CMAKE_CXX_FLAGS_MINSIZEREL:STRING=-Os -DNDEBUG

//Flags used by the compiler during release builds (/MD /Ob1 /Oi
// /Ot /Oy /Gs will produce slightly less optimized but smaller
// files).
CMAKE_CXX_FLAGS_RELEASE:STRING=-O3 -DNDEBUG

//Flags used by the compiler during Release with Debug Info builds.
CMAKE_CXX_FLAGS_RELWITHDEBINFO:STRING=-O2 -g

//C compiler.
CMAKE_C_COMPILER:FILEPATH=/usr/bin/gcc

//Flags used by the compiler during all build types.
CMAKE_C_FLAGS:STRING=

//Flags used by the compiler during debug builds.
CMAKE_C_FLAGS_DEBUG:STRING=-g

//Flags used by the compiler during release minsize builds.
CMAKE_C_FLAGS_MINSIZEREL:STRING=-Os -DNDEBUG

//Flags used by the compiler during release builds (/MD /Ob1 /Oi
// /Ot /Oy /Gs will produce slightly less optimized but smaller
// files).
CMAKE_C_FLAGS_RELEASE:STRING=-O3 -DNDEBUG

//Flags used by the compiler during Release with Debug Info builds.
CMAKE_C_FLAGS_RELWITHDEBINFO:STRING=-O2 -g

//Flags used by the linker.
CMAKE_EXE_LINKER_FLAGS:STRING=' '

//Flags used by the linker during debug builds.
CMAKE_EXE_LINKER_FLAGS_DEBUG:STRING=

//Flags used by the linker during release minsize builds.
CMAKE_EXE_LINKER_FLAGS_MINSIZEREL:STRING=

//Flags used by the linker during release builds.
CMAKE_EXE_LINKER_FLAGS_RELEASE:STRING=

//Flags used by the linker during Release with Debug Info builds.
CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO:STRING=

//Enable/Disable output of compile commands during generation.
CMAKE_EXPORT_COMPILE_COMMANDS:BOOL=OFF

//Install path prefix, prepended onto install directories.
CMAKE_INSTALL_PREFIX:PATH=/usr/local

//Path to a program.
CMAKE_LINKER:FILEPATH=/usr/bin/ld

//Path to a program.
CMAKE_MAKE_PROGRAM:FILEPATH=/usr/bin/make

//Flags used by the linker during the creation of modules.
CMAKE_MODULE_LINKER_FLAGS:STRING=' '

//Flags used by the linker during debug builds.
CMAKE_MODULE_LINKER_FLAGS_DEBUG:STRING=

//Flags used by the linker during release minsize builds.
CMAKE_MODULE_LINKER_FLAGS_MINSIZEREL:STRING=

//Flags used by the linker during release builds.
CMAKE_MODULE_LINKER_FLAGS_RELEASE:STRING=

//Flags used by the linker during Release with Debug Info builds.
CMAKE_MODULE_LINKER_FLAGS_RELWITHDEBINFO:STRING=

==[...]==

That's a list of the contents of my lmms/build folder:

[DIR]lmms/build$ dir
CMakeCache.txt     CPackSourceConfig.cmake  lmmsconfig.h   plugins
CMakeFiles     data             lmms.rc
CPackConfig.cmake  include          lmmsversion.h

My Question: It just tells me that that "errors" occurred, but I can't see any error message. It seems like everything went fine. - So: Any idea what the problem could be? - Thanks.