It means that gcc is not installed (most likely, and contrary to what you thought), or is installed in a non-standard location that's not in path, or it's not executable, or there is no symlink to gcc, just a gcc-4.3 or whatever version you use.

In reply to Re^3: Digest MD5 not compiling, err msg confusing by moritz
in thread Digest MD5 not compiling, err msg confusing by ARiccela

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