On Fri, 2007-09-28 at 18:23 -0400, Jakub Jelinek wrote: > On Fri, Sep 28, 2007 at 11:14:00PM +0100, Stefan Schulze Frielinghaus wrote: > > I'm trying to port a tool from solaris 10 to Fedora 7. While running gcc > > I get some strange errors. Example app: > > > > include <netinet/in.h> > > > > int main() { > > const int segments = 100; > > inet6_rth_space(IPV6_RTHDR_TYPE_0, segments); > > > > return 0; > > } > > > > While running gcc the following output is created: > > > > > $ gcc -Wall -o test test.c > > > test.c: In function ‘main’: > > > test.c:5: warning: implicit declaration of function ‘inet6_rth_space’ > > > > Under solaris it compiles just fine. Does someone know whats wrong? > > This function is an extension, isn't part of e.g. SuS, current POSIX, etc. > If you compile with -D_GNU_SOURCE, it will be enabled. > For more info run > info libc 'Feature Test Macros' > > Jakub > Whoops, thought that the function is in current POSIX. Thanks for clarification...didn't know that. cheers, Stefan