[zillah]

I downloded Mandrake OS official 10.1 ,,,Test media was ok, and SHA1 was ok for all 4 CDs.

I tried to install GCC through: Software manager-->select the development program group-->install GCC.

I received the message below during installation:

Verifying Oackage Installation :
The following package have bad signatures:libstdctts-devel-3.3.4mak.i586.rpm. Invalid signature ( (SHA1) DSA sha1 md5 (GPG) (MISSING KEY) GPG # 78d019f5 NoT ok ).
Do you want to continue installation-------I pressed yes.

When I checked these command:
1- which gcc
2- gcc --version
3- rpm -q gcc

It showed me that It has not been installed.

How can I overcome this issue ?

[jiml8]

try installing it again using the package manager.

[lynch]

Did it ask for a CD during installation? And you used the software installer in Mandrake Control Center?(System> Configuration> Configure your Computer)
I like using easy-urpmi. Just follow the steps to configure your sources. Here is a good tutorial on how to use it.
lynch

[zillah]

try installing it again using the package manager.

Do you mean I have to run mcc or rpmdrake commands ?

Did it ask for a CD during installation?

Yes,,,I used CD1 during installation of gcc.

[zillah]

And you used the software installer in Mandrake Control Center?(System> Configuration> Configure your Computer)

Yes I used :
System--> Configuration--> Configure your Computer-->Software Managemnet-->Install.

[jiml8]

Originally Posted by zillah

Do you mean I have to run mcc or rpmdrake commands ?

Try urpmi, and become familiar with the --allow-force option.