dnl
dnl    Copyright 2005-2006 Intel Corporation
dnl 
dnl    Licensed under the Apache License, Version 2.0 (the "License");
dnl    you may not use this file except in compliance with the License.
dnl    You may obtain a copy of the License at
dnl 
dnl        http://www.apache.org/licenses/LICENSE-2.0
dnl 
dnl    Unless required by applicable law or agreed to in writing, software
dnl    distributed under the License is distributed on an "AS IS" BASIS,
dnl    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
dnl    See the License for the specific language governing permissions and
dnl    limitations under the License.
dnl


#
# Macro based on AC_CHECK_LIB but which takes a particular
# LFLAGS setting as another argument to go into the cache.
#

# AC_CHECK_LIB_FLAGS(LIBRARY, FUNCTION, LDFLAGS,
#                    [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND],
#                    [OTHER-LIBRARIES])
# ------------------------------------------------------
#
# Use a cache variable name containing both the library and function name,
# because the test really is for library $1 defining function $2, not
# just for library $1.  Separate tests with the same $1 and different $2s
# may have different results.
#
# Note that using directly AS_VAR_PUSHDEF([ac_Lib], [ac_cv_lib_$1_$2])
# is asking for troubles, since AC_CHECK_LIB($lib, fun) would give
# ac_cv_lib_$lib_fun, which is definitely not what was meant.  Hence
# the AS_LITERAL_IF indirection.
#
# FIXME: This macro is extremely suspicious.  It DEFINEs unconditionally,
# whatever the FUNCTION, in addition to not being a *S macro.  Note
# that the cache does depend upon the function we are looking for.
#
# It is on purpose we used `ac_check_lib_save_LIBS' and not just
# `ac_save_LIBS': there are many macros which don't want to see `LIBS'
# changed but still want to use AC_CHECK_LIB, so they save `LIBS'.
# And ``ac_save_LIBS' is too tempting a name, so let's leave them some
# freedom.
AC_DEFUN([AC_CHECK_LIB_FLAGS],
[m4_ifval([$4], , [AH_CHECK_LIB([$1])])dnl
AS_LITERAL_IF([$1],
              [AS_VAR_PUSHDEF([ac_Lib], [ac_cv_lib_$1_$2_$3])],
              [AS_VAR_PUSHDEF([ac_Lib], [ac_cv_lib_$1''_$2_$3])])dnl
AC_CACHE_CHECK([for $2 in -l$1 with $3], ac_Lib,
[ac_check_lib_save_LIBS=$LIBS
ac_check_lib_save_LDFLAGS=$LDFLAGS
LIBS="-l$1 $6 $LIBS"
LDFLAGS="$3 $LDFLAGS"
AC_LINK_IFELSE([AC_LANG_CALL([], [$2])],
               [AS_VAR_SET(ac_Lib, yes)],
               [AS_VAR_SET(ac_Lib, no)])
LIBS=$ac_check_lib_save_LIBS
LDFLAGS=$ac_check_lib_save_LDFLAGS])
AS_IF([test AS_VAR_GET(ac_Lib) = yes],
      [m4_default([$4], [AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_LIB$1))
  LIBS="-l$1 $LIBS"
])],
      [$5])dnl
AS_VAR_POPDEF([ac_Lib])dnl
])# AC_CHECK_LIB