RedHatLinux9 install GCC

It's almost a semester to learn embedded system design and application. I haven't used GCC to compile a program, let alone other programming environments. The reason is that my system does not have GCC, I want to install one but I don't know how to install it. After Google's introduction, I found that it basically introduced the GCC in the form of source code installation. I didn't have GCC on my system, so gcc in the source code form cannot be installed. How can this problem be solved? There are two solutions: & nb

It's almost a semester to learn embedded system design and application. I haven't used GCC to compile a program, let alone other programming environments. The reason is that my system does not have GCC, I want to install one but I don't know how to install it. After Google's introduction, I found that it basically introduced the GCC in the form of source code installation. I didn't have GCC on my system, so gcc in the source code form cannot be installed. How can this problem be solved?
There are two solutions:
1. Install the disk;
2. reinstall the system. During installation, select the custom installation package, select GCC, or select full installation;
Iii. Install GCC (. rpm) in binary format)
The following describes how to install gcc in the binary format (it looks troublesome)
 
Determine in advance to install rhel9-compliant rpm, and find the following URL:
Http://mirrors.jtlnet.com/centos/4/apt/i386/RPMS. OS/
It is comprehensive and covers all the other RPMs required for gcc installation.

Note: The following $ indicates the terminal.
 
1) install gcc
Download: gcc-3.4.6-9.i386.rpm
$ Rpm-ivh gcc-3.3.2-6.i386.rpm
 
Warning: gcc-3.4.6-9.i386.rpm: V3 DSA signature: NOKEY, key ID 443e1821
Error: Failed dependencies:
Binutils> = 2.15.92.0.2-18 is needed by gcc-3.4.6-9.i386
Cpp = 3.4.6-9 is needed by gcc-3.4.6-9.i386
Glibc-devel> = 2.2.90-12 is needed by gcc-3.4.6-9.i386
Libgcc> = 3.4.6-9 is needed by gcc-3.4.6-9.i386
Suggested resolutions:
Glibc-devel-2.3.4-2.9.i386.rpm
 
Failed
Based on the error message --> 1---1-
 
 
1-1) Update binutils
Download: binutils-2.15.92.0.2-24.i386.rpm
$ Rpm-Uvh binutils-2.15.92.0.2-24.i386.rpm
 
1-2) Update cpp
Download: cpp-3.4.6-9.i386.rpm
$ Rpm-Uvh cpp-3.4.6-9.i386.rpm
 
1-3) Update libgcc
Download: libgcc-3.4.6-9.i386.rpm
$ Rpm-Uvh libgcc-3.4.6-9.i386.rpm
 
1-4) Update glibc-devel
Download: glibc-devel-2.3.4-2.39.i386.rpm
$ Rpm-ivh glibc-devel-2.3.4-2.39.i386.rpm
Warning: glibc-devel-2.3.4-2.39.i386.rpm: V3 DSA signature: NOKEY, key ID 443e1821
Error: Failed dependencies:
Glibc = 2.3.4-2.39 is needed by glibc-devel-2.3.4-2.39.i386
Glibc-headers is needed by glibc-devel-2.3.4-2.39.i386
Glibc-headers = 2.3.4-2.39 is needed by glibc-devel-2.3.4-2.39.i386
Suggested resolutions:
Glibc-headers-2.3.4-2.9.i386.rpm
 
Based on the error message ---> 1-4-1-1-4-2
1-4-1) Update glibc
Download: glibc-2.3.4-2.39.i386.rpm
$ Glibc-2.3.4-2.39.i386.rpm
Warning: glibc-2.3.4-2.39.i386.rpm: V3 DSA signature: NOKEY, key ID 443e1821
Error: Failed dependencies:
Glibc-common = 2.3.4-2.39 is needed by glibc-2.3.4-2.39.i386
 
According to the error message --> 1-4-1-1
1-4-1-1)
Download: glibc-common-2.3.4-2.39.i386.rpm
$ Rpm-Uvh glibc-common-2.3.4-2.39.i386.rpm
Warning: glibc-common-2.3.4-2.39.i386.rpm: V3 DSA signature: NOKEY, key ID 443e1821
Error: Failed dependencies:
Glibc-common = 2.3.4-2.9 is needed by (installed) glibc-2.3.4-2.9.i686
 
If an error occurs again, force update will not be used, and the rpm dependent on it will also be updated
$ Rpm-Uvh glibc-common-2.3.4-2.39.i386.rpm -- nodeps -- force
 
Returns 1-4-1)
$ Rpm-Uvh glibc-2.3.4-2.39.i386.rpm
 
1-4-2) install glibc-headers
Download: glibc-headers-2.3.4-2.39.i386.rpm
$ Rpm-ivh glibc-headers-2.3.4-2.39.i386.rpm
Warning: glibc-headers-2.3.4-2.39.i386.rpm: V3 DSA signature: NOKEY, key ID 443e1821
Error: Failed dependencies:
Kernel-headers is needed by glibc-headers-2.3.4-2.39.i386
Kernel-headers> = 2.2.1 is needed by glibc-headers-2.3.4-2.39.i386
Suggested resolutions:
Glibc-kernheaders-2.4-9.1.87.i386.rpm
 
Based on Error information ---> 1-4-2-1
 
1-4-2-1) install glibc-kernheaders
Download: glibc-kernheaders-2.4-9.1.100.EL.i386.rpm
$ Rpm-ivh glibc-kernheaders-2.4-9.1.100.EL.i386.rpm
 
Returns 1-4-2)
$ Rpm-ivh glibc-headers-2.3.4-2.39.i386.rpm
 
Returns 1-4)
$ Rpm-ivh glibc-devel-2.3.4-2.39.i386.rpm
 
Return 1)
$ Rpm-ivh gcc-3.4.6-9.i386.rpm
 
Installation complete,
$ Gcc-v
Display Information
Gcc version 3.4.6 20060404 (Red Hat 3.4.6-9)