On Tuesday 27 September 2011 16:36:20 Severine Jancek wrote: > Maybe I found the problem. > Xcode for Mac Os X 10.5.8 Leopard come with GCC 4.0.1 and GCC 4.2. GCC > 4.0.1 is the default system compiler while GCC 4.2 is an optional compiler > you can set in the Xcode project settings. > > But for MIRA, I need gcc 4.1 minimum. Hmmm ... not for the part where it throws an error. > Do you think Default version of gcc is the one selected when I try to > 'make' binary of MIRA and explain why I get error ? > > How can I switch to the gcc 4.2 version ? A quick search gave me this link: http://stackoverflow.com/questions/1165361/setting-gcc-4-2-as-the-default- compiler-on-mac-os-x-leopard However, I somehow still have flex as suspect. What does the output of locate flex++ give you? B.