-ffreestanding A freestanding environment is one in which the standard library may not exist, and program startup may not necessarily be at main. -------------------------------------------------------------------------------- I have copied part of gcc manual. The fact that program startup may not necessarily be at main, is not a special feature which is created by -ffreestanding option! If we do not specify any option or use -fhosted, program startup may not necessarily be at main too!! Why the manual mentions the issue? > On Wed, Jan 5, 2011 at 8:20 PM, Ian Lance Taylor <iant@xxxxxxxxxx> wrote: >> ali hagigat <hagigatali@xxxxxxxxx> writes: >> The -ffreestanding option directs the compiler to not assume that >> standard functions have their usual definition, and to not assign any >> special semantics to the function main. It does not change the linking >> behaviour. You are looking for the -nostdlib option, or possibly >> -nostartfiles or -nodefaultlibs. >> >> Ian >> >
