dnl

dnl CHECK-LIBHEADER(FEATURE-NAME, LIB-NAME, LIB-FUNCTION, HEADER-NAME,

dnl                 ACTION-IF-FOUND, ACTION-IF-NOT-FOUND,

dnl                 EXTRA-LDFLAGS, EXTRA-CPPFLAGS)

dnl

dnl FEATURE-NAME        - feature name; library and header files are treated

dnl                       as feature, which we look for

dnl LIB-NAME            - library name as in AC_CHECK_LIB macro

dnl LIB-FUNCTION        - library symbol as in AC_CHECK_LIB macro

dnl HEADER-NAME         - header file name as in AC_CHECK_HEADER

dnl ACTION-IF-FOUND     - when feature is found then execute given action

dnl ACTION-IF-NOT-FOUND - when feature is not found then execute given action

dnl EXTRA-LDFLAGS       - extra linker flags (-L or -l)

dnl EXTRA-CPPFLAGS      - extra C preprocessor flags, i.e. -I/usr/X11R6/include

dnl

dnl Based on GST_CHECK_LIBHEADER from gstreamer plugins 0.3.1.

dnl

AC_DEFUN([CHECK_LIBHEADER],

[

  AC_CHECK_LIB([$2], [$3], HAVE_[$1]=yes, HAVE_[$1]=no, [$7])

  check_libheader_feature_name=translit([$1], A-Z, a-z)

  if test "x$HAVE_[$1]" = "xyes"; then

    check_libheader_save_CPPFLAGS=$CPPFLAGS

    CPPFLAGS="[$8] $CPPFLAGS"

    AC_CHECK_HEADER([$4], :, HAVE_[$1]=no)

    CPPFLAGS=$check_libheader_save_CPPFLAGS

  fi

  if test "x$HAVE_[$1]" = "xyes"; then

    ifelse([$5], , :, [$5])

    AC_MSG_NOTICE($check_libheader_feature_name was found)

  else

    ifelse([$6], , :, [$6])

    AC_MSG_WARN($check_libheader_feature_name not found)

  fi

  AC_SUBST(HAVE_[$1])

]

)