How to install g ++

How to install g ++-General Linux technology-Linux technology and application information is as follows. How to install the corresponding g ++
Linux version 2.6.18-194. el5 (mockbuild@x86-005.build.bos.redhat.com) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-48) #1 SMP Tue Mar 16 21:52:39 EDT 2010

When installing a software, the system prompts this error. Is it a g ++ problem?
Lincase15 exists in g ++
Lincase15_sam_1_1_1 SAM001:> make
G ++-Ilib-Iexternals/tinyxml-O2-DNDEBUG-Wall-std = c ++ 0x-c-o lib/check64bit. o lib/check64bit. cpp
G ++: error trying to exec 'cc1plus ': execvp: No such file or directory
Make: *** [lib/check64bit. o] Error 1
Or
No g ++ exists on lincase05
Lincase05_sam_1_1_1 SAM001:> make
G ++-Ilib-Iexternals/tinyxml-O2-DNDEBUG-Wall-std = c ++ 0x-c-o lib/check64bit. o lib/check64bit. cpp
Make: g ++: Command not found
Make: *** [lib/check64bit. o] Error 127

The following error occurs when yum install g ++/g ++-cc is used:
No package g ++ available.
Nothing to do

How can we solve this problem? thank you!