From: <elacour@home-dn.net>
Subject: Use mysql_config to find mysql multi-arch libs

Index: libnss-mysql-bg-1.5/acinclude.m4
===================================================================
--- libnss-mysql-bg-1.5.orig/acinclude.m4	2012-04-18 10:20:01.205313859 +0200
+++ libnss-mysql-bg-1.5/acinclude.m4	2012-04-18 11:18:19.681344131 +0200
@@ -80,6 +80,19 @@
     fi
 done
 
+dnl Get dir from mysql_config (for multi-arch libs)
+MYSQL_CONFIG=`which mysql_config`
+if test -n "$MYSQL_CONFIG" -a -x "$MYSQL_CONFIG"
+then
+    MYSQL_LIB_DIR=`$MYSQL_CONFIG --variable=pkglibdir`
+dnl Old versions of mysql_config does not have "--variable" option
+    if test $? -ne 0
+    then
+        MYSQL_LIB_DIR=`mysql_config --libs | sed 's/^.*-L\([^ ]\+\).*$/\1/'`
+    fi
+fi
+
+
 if test -n "$MYSQL_LIB_DIR"
 then
     AC_MSG_RESULT([$MYSQL_LIB_DIR])