Getting Error While doing bundle install with ruby racer - ruby-on-rails

Question

While doing Bundle install for my app, I'm getting an error related to therubyracer (0.9.4).
This is the error:
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
/Users/kpvarma/.rvm/rubies/ruby-1.9.3-p194/bin/ruby extconf.rb
checking for main() in -lpthread... yes
checking for main() in -lobjc... yes
creating Makefile
make
compiling rr.cpp
clang: warning: argument unused during compilation: '-rdynamic'
rr.cpp:48:1: warning: control reaches end of non-void function [-Wreturn-type]
}
^
rr.cpp:151:44: warning: implicit conversion loses integer precision: 'long' to 'int' [-Wshorten-64-to-32]
return String::New(RSTRING_PTR(value), RSTRING_LEN(value));
^~~~~~~~~~~~~~~~~~
/Users/kpvarma/.rvm/rubies/ruby-1.9.3-p194/include/ruby-1.9.1/ruby/ruby.h:674:6: note: expanded from macro 'RSTRING_LEN'
RSTRING_EMBED_LEN(str) : \
^
/Users/kpvarma/.rvm/rubies/ruby-1.9.3-p194/include/ruby-1.9.1/ruby/ruby.h:670:6: note: expanded from macro 'RSTRING_EMBED_LEN'
(long)((RBASIC(str)->flags >> RSTRING_EMBED_LEN_SHIFT) & \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
rr.cpp:151:44: warning: implicit conversion loses integer precision: 'long' to 'int' [-Wshorten-64-to-32]
return String::New(RSTRING_PTR(value), RSTRING_LEN(value));
^~~~~~~~~~~~~~~~~~
/Users/kpvarma/.rvm/rubies/ruby-1.9.3-p194/include/ruby-1.9.1/ruby/ruby.h:675:28: note: expanded from macro 'RSTRING_LEN'
RSTRING(str)->as.heap.len)
^
3 warnings generated.
compiling v8.cpp
clang: warning: argument unused during compilation: '-rdynamic'
compiling v8_array.cpp
clang: warning: argument unused during compilation: '-rdynamic'
compiling v8_callbacks.cpp
clang: warning: argument unused during compilation: '-rdynamic'
compiling v8_context.cpp
clang: warning: argument unused during compilation: '-rdynamic'
compiling v8_date.cpp
clang: warning: argument unused during compilation: '-rdynamic'
compiling v8_debug.cpp
clang: warning: argument unused during compilation: '-rdynamic'
compiling v8_exception.cpp
clang: warning: argument unused during compilation: '-rdynamic'
v8_exception.cpp:15:8: warning: unused function 'segfault' [-Wunused-function]
void segfault(int sig) {
^
1 warning generated.
compiling v8_external.cpp
clang: warning: argument unused during compilation: '-rdynamic'
v8_external.cpp:10:9: warning: unused variable 'references' [-Wunused-variable]
VALUE references;
^
1 warning generated.
compiling v8_function.cpp
clang: warning: argument unused during compilation: '-rdynamic'
v8_function.cpp:24:23: error: variable length array of non-POD element type 'Handle<v8::Value>'
Handle<Value> argv[argc];
^
v8_function.cpp:36:23: error: variable length array of non-POD element type 'Handle<v8::Value>'
Handle<Value> argv[argc];
^
2 errors generated.
make: *** [v8_function.o] Error 1
Gem files will remain installed in /Users/kpvarma/.rvm/gems/ruby-1.9.3-p194/gems/therubyracer-0.9.4 for inspection.
Results logged to /Users/kpvarma/.rvm/gems/ruby-1.9.3-p194/gems/therubyracer-0.9.4/ext/v8/gem_make.out
An error occured while installing therubyracer (0.9.4), and Bundler cannot continue.
Make sure that `gem install therubyracer -v '0.9.4'` succeeds before bundling.
I amm using ruby-1.9.3-p194 on Mac.
Can anyone please help me out?
Thank you
Regards