Cmake functions detection

While discussing about kdm, it has been found that cmake (in kdebase) doesn't detect the crypt function. (A patch has been sent.) I noticed that the same function isn't detected in kdelibs, as well than other functions (alloca and dlerror). I reported a bug for this (http://bugs.pearsoncomputing.net/show_bug.cgi?id=654). In comparison, I also found that autoconf, in kde 3.5.10, is detecting those functions. That makes me think that there's probably other errors, in the cmake configuration, in other parts of Trinity, and that it would be useful to take a look in the whole tree of trinity. What do you think? -- Laurent Dard