On 12/14/2012 11:11 AM, Henrik Mannerström wrote:
Hello, My program won't link when I add the '--whole-program' option with gcc 4.4.6. It compiles fine with 'g++ -o prog prog.cc test1.cc', but reports prog.cc:3: undefined reference to `A::A()' prog.cc:3: undefined reference to `A::~A()' with 'g++ --whole-program -g -o prog prog.cc test1.cc' Is this a c++ issue or something with gcc?
--whole-program itself does not cause the compiler to combine translation units. Both input files are compiled separately and flat out violate the assumptions of --whole-program.
Try passing -flto as well. -- Florian Weimer / Red Hat Product Security Team
