[CM] ubuntu build error ; additional ubuntu installation requirements

[Terrence Brannon]

The readme.txt omits some of the packages that are apparently needed to 
install CM, per this post:

http://ubuntuforums.org/archive/index.php/t-1281658.html

Also, I cannot build cm on ubuntu -

[thequietcenter at ubuntu ~/Downloads/cm] premake --verbose --target gnu --sndlib ../sndlib&&  make

Generating GNU makefiles:

...juce

...cm

...grace

==== Building juce ====

mkdir -p obj/juce/Release

g++  -MMD -D "JUCE_OPENGL=0" -D "JUCE_CHECK_MEMORY_LEAKS=0" -D "JUCE_JACK=1" -I "src" -I "/usr/include/freetype2"  -O2 -o "obj/juce/Release/juce_amalgamated.o" -c "src/juce_amalgamated.cpp"

mkdir -p bin

mkdir -p .

mkdir -p ./obj/juce

ar -rcs ./obj/juce/libjuce.a obj/juce/Release/juce_amalgamated.o

==== Building cm ====

mkdir -p obj/cm/Release

g++  -MMD -D "JUCE_OPENGL=0" -D "JUCE_CHECK_MEMORY_LEAKS=0" -D "JUCE_JACK=1" -D "SNDLIB=1" -D "LINUX=1" -I "src" -I "../sndlib/"  -O2 -o "obj/cm/Release/Syntax.o" -c "src/Syntax.cpp"

mkdir -p obj/cm/Release

g++  -MMD -D "JUCE_OPENGL=0" -D "JUCE_CHECK_MEMORY_LEAKS=0" -D "JUCE_JACK=1" -D "SNDLIB=1" -D "LINUX=1" -I "src" -I "../sndlib/"  -O2 -o "obj/cm/Release/CmSupport.o" -c "src/CmSupport.cpp"

../sndlib/s7.h: In function ‘void cm_print_markov_table(s7_cell*, s7_cell*, int, int)’:

../sndlib/s7.h:138: error: too few arguments to function ‘s7_cell* s7_object_to_string(s7_scheme*, s7_cell*, bool)’

src/CmSupport.cpp:86: error: at this point in file

src/CmSupport.cpp: In function ‘void cm_shell(char*)’:

src/CmSupport.cpp:164: warning: ignoring return value of ‘int system(const char*)’, declared with attribute warn_unused_result

src/CmSupport.cpp: In function ‘char* cm_pathname_directory(char*)’:

src/CmSupport.cpp:731: warning: deprecated conversion from string constant to ‘char*’

make[1]: *** [obj/cm/Release/CmSupport.o] Error 1

make: *** [cm] Error 2

[thequietcenter at ubuntu ~/Downloads/cm]