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Force resolution of _res for correct detection. 

bz#2259, from sconeu at yahoo.com.
This commit is contained in:
Darren Tucker 2015-09-11 13:11:02 +10:00
parent 26ad182472
commit 7ad8b287c8
1 changed files with 4 additions and 1 deletions
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5
configure.ac
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@ -3969,7 +3969,10 @@ AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <arpa/nameser.h>
#include <resolv.h>
extern struct __res_state _res;
]], [[ ]])],
]], [[
struct __res_state *volatile p = &_res; /* force resolution of _res */
return 0;
]],)],
[AC_MSG_RESULT([yes])
AC_DEFINE([HAVE__RES_EXTERN], [1],
[Define if you have struct __res_state _res as an extern])