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Tag: g++

gcc 4.x not supporting x87 FPU math?

I’ve been trying to compile gcc 4.x from the sources using –with-fpmath=387 but I’m getting this error: “Invalid –with-fpmath=387”. I looked in the configs and found that it doesn’t support this option (even though docs still mention it as a possible option): Basicall…

gmon.out is not created when executable forks another executable

I am using gprof for profiling. But gmon.out is not created when I fork another executable inside the main executable which is compiled with option -pg. Any idea how to resolve it. Answer But gmon.out is not created when I fork another executable It probably does. It simply has the same name as all the other …

Undefined references in makefile

Ok, ive read about 10 tutorials, but i keep getting errors all the time, i have 5 files, main.cpp class.cpp, class.h and functions.cpp and functions.h. All of those use functions from different objects meaning that functions in functions.cpp uses objects from classes.cpp. My makefile looks as follows I keeps …

How to view symbols in object files?

How can I view symbols in a .o file? nm does not work for me. I use g++/linux. Answer Instead of nm, you can use the powerful objdump. See the man page for details. Try objdump -t myfile or objdump -T myfile. With the -C flag you can also demangle C++ names, like nm does.

Dynamic Shared Library compilation with g++

I’m trying to compile the following simple DL library example code from Program-Library-HOWTO with g++. This is just an example so I can learn how to use and write shared libraries. The real code for the library I’m developing will be written in C++. If I compile the program with gcc it works fine…