I am trying to use OpenMP in a objective-c++ program.
Unfortunately llvm-gcc 4.2 seems to have serious bug when working with OpenMP. According to my researches, the bes
In Xcode, in your project, select the project (the root of the files, with the blue icon). In the view that opens, select the project again, then select the tab "Build Settings".
Search here the entry "Compiler for C/C++/Objective-C (there is a search box above the table view). Edit the value and set a custom path (by selecting "Other…") to the gcc you downloaded.