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On Friday 10 August 2012 16:40:43 Philip Prindeville wrote: > I'm working on the networking code for Poco on Centos 6.2, and am in a > situation where I need to use both <net/if.h> and <linux/if.h> in the same > source file. generally speaking, if you're using the C library API, then stick to net/*. if you're talking directly to the kernel, then stick to linux/*. do not mix the two. > Unfortunately, doing so gets me: > > In file included from src/NetworkInterface.cpp:1032: > /usr/include/linux/if.h:139: error: redefinition of ‘struct ifmap’ > /usr/include/net/if.h:113: error: previous definition of ‘struct ifmap’ > /usr/include/linux/if.h:175: error: redefinition of ‘struct ifreq’ > /usr/include/net/if.h:128: error: previous definition of ‘struct ifreq’ > /usr/include/linux/if.h:225: error: redefinition of ‘struct ifconf’ > /usr/include/net/if.h:178: error: previous definition of ‘struct ifconf’ > > > I need <net/if.h> for the if_indextoname() stuff, but I need <linux/if.h> > for the correct IFF_* flags (some of which are also defined in > <net/if.h>). please post a patch to add any new/missing flags to net/if.h that are not yet there. > Better yet, is there a simpler solution to this issue? convince the kernel people to not export the same struct names as the C library. -mike
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