Yum install GMP GMP - devel MPFR MPFR - devel libmpc libmpc - devel glibc - headers
The Repository epel is listed more than once in the configuration
Last the metadata expiration check: 1:35:04 line on Thu 10 Dec 2020 05:34:59 PM CST.
Package GMP - 1:6. 1.2 to 10. El8. X86_64 is already installed.
Package MPFR 3.1.6-1. El8. X86_64 is already installed.
Package libmpc 1.0.2-9. El8. X86_64 is already installed.
No match for argument: libmpc - devel
Package glibc - headers - 2.28-127 el8. X86_64 is already installed.
Error: Unable to find a match: libmpc - devel