Missing check that C compiler is C99 compatible

[jputcu]

The autoconfigure script checks for gcc >= 2. When using such a compiler on Red Hat 7.3, gcc-2.96, I get a number of C89 errors.

Stated on  http://hackage.haskell.org/trac/ghc/wiki/Commentary/Rts/Conventions, C99 standard is used so my compiler is too old?

Should the gcc requirement be updated or just check for C99 compliance.

[igloo]

Thanks for the report. We should work out exactly what we do require, and correct the configure script.

[simonmar]

I don't have an older version of gcc to test with, so perhaps the safest thing to do is to just require gcc 3.0+ in configure.

[simonmar]

I've updated the configure script to require gcc 3. Lacking a machine with gcc 2.95 installed that's the best we can do for now.