[glib] [configure] Fix res_query check for OS X

[Dan Winship <danw src gnome org>]

commit 956b3b507d03b6d10f8bef34b3775a409c5ba9ee
Author: Dan Winship <danw gnome org>
Date:   Wed Jan 13 11:24:28 2010 -0500

    [configure] Fix res_query check for OS X
    
    https://bugzilla.gnome.org/show_bug.cgi?id=586150

 configure.in  |   36 +++++++++++++++++++-----------------
 gio-2.0.pc.in |    2 +-
 2 files changed, 20 insertions(+), 18 deletions(-)
---
diff --git a/configure.in b/configure.in
index bc43102..632456d 100644
--- a/configure.in
+++ b/configure.in
@@ -1012,23 +1012,25 @@ AC_CHECK_HEADERS([netdb.h wspiapi.h])
 if test $glib_native_win32 = no; then
   AC_CHECK_FUNCS(strndup setresuid setreuid)
   AC_CHECK_HEADERS(sys/prctl.h arpa/nameser_compat.h)
-  AC_CHECK_FUNC(res_query, ,
-    [AC_CHECK_LIB(resolv, res_query, [ LIBASYNCNS_LIBADD="-lresolv" ],
-      [ save_libs="$LIBS"
-        LIBS="-lresolv $LIBS"
-        AC_MSG_CHECKING([for res_query in -lresolv (alternate version)])
-        AC_LINK_IFELSE(
-          [AC_LANG_PROGRAM([[#include <resolv.h>]], [[res_query(0,0,0,0,0)]])],
-          [ AC_MSG_RESULT(yes)
-  	  LIBASYNCNS_LIBADD="-lresolv" ],
-          [ AC_MSG_RESULT(no)
-            AC_CHECK_LIB(bind, res_query,
-              [ LIBASYNCNS_LIBADD="-lbind" ],
-  	    [ AC_MSG_ERROR(res_query not found) ] ) ] )
-        LIBS="$save_libs"
-      ] )
-    ]
-  )
+
+  # We can't just use AC_CHECK_FUNC/AC_CHECK_LIB here. Bug 586150
+  AC_MSG_CHECKING([for res_query])
+  AC_TRY_LINK([#include <resolv.h>],
+              [res_query("test", 0, 0, (void *)0, 0);],
+              [AC_MSG_RESULT([yes])],
+              [save_libs="$LIBS"
+               LIBS="-lresolv $LIBS"
+               AC_TRY_LINK([#include <resolv.h>],
+                           [res_query("test", 0, 0, (void *)0, 0);],
+                           [AC_MSG_RESULT([in -lresolv])
+                            LIBASYNCNS_LIBADD="-lresolv"],
+                           [LIBS="-lbind $save_libs"
+                            AC_TRY_LINK([#include <resolv.h>],
+                                        [res_query("test", 0, 0, (void *)0, 0);],
+                                        [AC_MSG_RESULT([in -lbind])
+                                         LIBASYNCNS_LIBADD="-lbind"],
+                                        [AC_MSG_ERROR(not found)])])
+               LIBS="$save_libs"])
   AC_SUBST(LIBASYNCNS_LIBADD)
 fi
 
diff --git a/gio-2.0.pc.in b/gio-2.0.pc.in
index 5c1bfe4..6550377 100644
--- a/gio-2.0.pc.in
+++ b/gio-2.0.pc.in
@@ -10,5 +10,5 @@ Description: glib I/O library
 Version: @VERSION@
 Requires: glib-2.0,gobject-2.0,gmodule-no-export-2.0
 Libs: -L${libdir} -lgio-2.0
-Libs.private: @ZLIB_LIBS@
+Libs.private: @ZLIB_LIBS@ @LIBASYNCNS_LIBADD@
 Cflags: