Thank you Tim for replaying to my question. > It doesn't matter about the 64-bitness of the computer. You could be > running a 32-bit OS. I am running a 64-bit OS (Red Hat Enteprise Linux 4 WS - update 4) . > g++ implies -lstdc++ -lm. If you need those options, something is wrong. Thanks for info. I have now removed those libraries. > You can't mix ingredients built with -m64 (default on 64-bit g++/g77) > with those built with -m32 (which would be the default if you have > 32-bit OS). I too would worry somewhat about mixing builds with > different alignments. In my experience, the alignment conflict would > mean either that you have something built with much older tools, or with > different options, such as -Os (or perhaps explicitly using > -mpreferred-stack-boundary=3). The alignment 8 would break any use of > parallel SSE, including vectorization, in callees (you may not have any > such). I have not mixed options (e.g. -Os) or ingredients (-m32) while compiling. To stress, I have independently compiled and link the program on two different ways. When building and linking without -m32 I have 'only' casting warnings. But, if I included -m32 switch I have 'only' alignment problems. Because I have a source code of the program I have compiled everything by myself in a way I have shown in last e-mail. Due to that I doubt there could be a problem with newer/older tools. > A lot of this depends on what you are trying to do, which you haven't > specified. Some of us might advise you to use a current g++ and > gfortran in place of g77, and to avoid tinkering with the Fortran > underscoring model, in addition to figuring out your OS version, and > whether you want 32- or 64-bit compilation, I don't trust any 64-bit g77. I have tried to replace g77 with g++ and gfortran. With g++ the problems still exist. But with gfortran I was not able to link due to too many undefined references. Next, I have to use underscoring; otherwise I have problems with undefined references. To conclude I want to be able to compile and link a program without serious warnings and this could be either 64 or 32 bit. Best regards, Mitja ____________________ http://www.email.si/
