I'm trying to install ppl on mac but I get *make[3]: Nothing to be done for `all-am'.* *Making all in doc* *make[2]: Nothing to be done for `all'.* *Making all in m4* *make[2]: Nothing to be done for `all'.* errors. Here is my installing procedure, cd ppl-1.2 ./configure make Even though I omit the error, then write make install, it is installed but then, I get *Undefined symbols for architecture x86_64:* * "Parma_Polyhedra_Library::Init::Init()", referenced from:* * ___cxx_global_var_init.6 in main.cpp.o* * "Parma_Polyhedra_Library::Init::~Init()", referenced from:* * ___cxx_global_var_init.6 in main.cpp.o* *ld: symbol(s) not found for architecture x86_64* *clang: error: linker command failed with exit code 1 (use -v to see invocation)* *make[3]: *** [proje] Error 1* *make[2]: *** [CMakeFiles/proje.dir/all] Error 2* *make[1]: *** [CMakeFiles/proje.dir/rule] Error 2* How can it be resolved?