Error building base with clang 3.2

[edwin ancaer]

Hello,

when configuring gnustep base with clang 3.2 on fedora 18, I get the following error:

configure: error: Your compiler does not appear to implement the -fconstant-string-class option needed for support of strings.

To configure, I used the command:

./configure --disable-mixedabi --disable-unicodeconstants --with-ffi-include=/usr/include/`gcc -dumpmachine`

Any idea what's going wrong?

Thanks in advance,

E. Ancaer