Dear R users, I have found a quite uncommon behaviour when compiling a library I want to call from R (avce00, in package RArcInfo). I define CPL_LSB (-DCPL_LSB is passed to the compiler in the command line) but it's useless, since #ifdef CPL_LSB ... #endif clauses doesn't notice that CPL_LSB is defined. I also set -O2. Any clue? I have tested the library without optimising the code and it works fine. I am using gcc-3.3 on a GNU/Linux debian box, but I have the same problem when I try to compile Windows binaries. I think it is important to mention that everything started to fail when R moved from gcc-2.95 to gcc-3.x. Thanks in advance. -- Virgilio G?mez Rubio Grup d'Estad?stica espacial i temporal en Epidemiologia i medi ambient Dpto. Estad?stica e I. O. - Facultat de Matem?tiques Avda. Vicent A. Estell?s, 1 - 46100 Burjassot Valencia - SPAIN http://matheron.uv.es/~virgil TLF: 00 34 96 354 43 62 - FAX: 00 34 96 354 47 35