Katana Steel writes: > > I wonder why; when I compile a C++ file with a header which looks like this: > #ifndef __headername_h > #define __headername_h 1 > > #ifdef __cplusplus > > extern "C" void function1(int,char*,int); > extern "C" void function2(int,char*,int); > > #endif > > #endif > > under x86 & x64 linux this creates the symbols (output from nm): > U function1 > U function2 > and using cygwin & mingw (x86) it creates these symbols (output from nm): > U _function1 > U _function2 > > is there a good reason for this? The ABI says so. The ABI allows programs generated by different tools to be linked together: it doesn't really matter what the convention is, as long as everyone on a particular platform agrees. The "_" prefix is in fact an old UNIX convention that was IIRC dropped by UNIX System V when it went over to ELF format binaries. Andrew.
