i'm trying to install RSEM tool to perform quantification on RNA-seq data i already installed samtools successfully. Also, indexing and alignment steps have been already done

h@ubuntu:~$ cd RSEM-1.2.31/

h@ubuntu:~/RSEM-1.2.31$ make

g++ -std=gnu++98 -Wall -I. -I. -Isamtools-1.3/htslib-1.3 -O3 -c -o extractRef.o extractRef.cpp

make: g++: Command not found

make: * [extractRef.o] Error 127

i had installed the same tools on another machine and there was no problems in (make) steps ............ but the only difference now is that ....... ubuntu is installed onto a virtual machine

is that make difference or related to this error??? Please, Help me