Compile Scilab 5.0.2 on Solaris 9

Hello,

I'm trying to build scilab 5.0.2 on a Solaris 9 Sparc
After more than one hour of compiling, this error msg appear, what could be the problem? if you need any more info i'm here.

Thanks for your help.

Error msg :

/Produits/tmp/nicolas/unix/scilab-5.0.2/libs/lapack/.libs/libscilapack.so: undefined reference to `lroundf'
make[1]: *** [scilab-bin] Error 1
make[1]: Leaving directory `/nfs/Produits/tmp/nicolas/unix/scilab-5.0.2'
make: *** [all-recursive] Error 1