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build: Fix check for resolver library on macOS. 

* configure.ac: Check for the mangled name of 'dn_skipname' first.

Signed-off-by: Justus Winter <justus@g10code.com>
This commit is contained in:
Justus Winter 2016-09-27 17:18:15 +02:00
parent 2b23a321ac
commit 2e64ccb0f9
1 changed files with 9 additions and 2 deletions
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11
configure.ac
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@ -1074,8 +1074,15 @@ if test x"$use_dns_srv" = xyes || test x"$use_dns_cert" = xyes; then
AC_SEARCH_LIBS(__res_query,resolv bind,,have_resolver=no))
AC_SEARCH_LIBS(dn_expand,resolv bind,,
AC_SEARCH_LIBS(__dn_expand,resolv bind,,have_resolver=no))
AC_SEARCH_LIBS(dn_skipname,resolv bind,,
AC_SEARCH_LIBS(__dn_skipname,resolv bind,,have_resolver=no))
# macOS renames dn_skipname into res_9_dn_skipname in <resolv.h>,
# and for some reason fools us into believing we don't need
# -lresolv even if we do. Since the test program checking for the
# symbol does not include <resolv.h>, we need to check for the
# renamed symbol explicitly.
AC_SEARCH_LIBS(res_9_dn_skipname,resolv bind,,
AC_SEARCH_LIBS(dn_skipname,resolv bind,,
AC_SEARCH_LIBS(__dn_skipname,resolv bind,,have_resolver=no)))
if test x"$have_resolver" != xno ; then