Question #77587 on Ubuntu changed: https://answers.launchpad.net/ubuntu/+question/77587
George proposed the following answer: The "-lm" tells the linker to include /usr/lib/libm.so (library), which provides the code for exp and other functions. Some systems either include "-lm" in the default compiler flags or put some math functions in the standard C library because they are commonly needed, but other systems offer different libraries (e.g., if you want the binary to run on a system that lacks hardware math functions you need a library that actually implements functions that might be implemented as simple stubs that communicate with hardware implementations) so you have to supply the option to indicate which version you want linked to your program. -- You received this question notification because you are a member of UF Unanswered Posts Team, which is an answer contact for Ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntuforums-unanswered Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntuforums-unanswered More help : https://help.launchpad.net/ListHelp
