* configure.ac: Move all warning options that may be absent in
authorVladimir Serbinenko <phcoder@gmail.com>
Wed, 4 Dec 2013 13:53:25 +0000 (14:53 +0100)
committerVladimir Serbinenko <phcoder@gmail.com>
Wed, 4 Dec 2013 13:53:25 +0000 (14:53 +0100)
commit382b500ebe0450f5949c75ca09d67d390880d505
tree8d9e8be536d2b1fac4e55f16bf145c9cf9e09645
parent3a82f8bb482eb428e10f7fbaa2aea3ff8be86567
* configure.ac: Move all warning options that may be absent in
gcc >= 3.1 to optional.

Note: while this allows to compile with older GCC, official requirements
remain the same and no support for older GCC.
ChangeLog
configure.ac