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Check for link_addr more thoroughly

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Some versions of kFreeBSD (like 9.0) declare link_addr in a header
but lack an implementation. This makes ./configure pass but breaks
compilation later with a

     undefined reference to `link_addr'

Althought that's a bug in the OS header we can detect it easily by also
trying to link.

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=715320
This commit is contained in:
Guido Günther 2013-07-17 20:02:17 +02:00
parent 984c01ba5c
commit 77bac48b37
1 changed files with 12 additions and 6 deletions
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14
configure.ac
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@ -2391,13 +2391,19 @@ AC_CHECK_MEMBERS([struct ifreq.ifr_newname,
[#include <sys/socket.h> [#include <sys/socket.h>
#include <net/if.h> #include <net/if.h>
]) ])
# Check for BSD approach for setting MAC addr # Check for BSD approach for setting MAC addr
AC_CHECK_DECLS([link_addr], AC_LINK_IFELSE([AC_LANG_PROGRAM(
[], [], [[
[#include <sys/types.h> #include <sys/types.h>
#include <sys/socket.h> #include <sys/socket.h>
#include <net/if_dl.h> #include <net/if_dl.h>
]) ]],
[[
link_addr(NULL, NULL)]])],
[AC_DEFINE([HAVE_DECL_LINK_ADDR],
[1],
[whether link_addr is available])])
# Check for BSD approach for bridge management # Check for BSD approach for bridge management
AC_CHECK_DECLS([BRDGSFD, BRDGADD, BRDGDEL], AC_CHECK_DECLS([BRDGSFD, BRDGADD, BRDGDEL],