Ok, thank you! I had misunderstood the whole-program option. I think the -flto was added in gcc 4.5 so I will just have to go without it. - Henrik On 12/14/2012 12:30 PM, Florian Weimer wrote: > 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. >
